• 项目经验分享——Java常用工具类集合


    写在前面
    
     
    
    本文涉及的工具类部分是自己编写,另一部分是在项目里收集的。工具类涉及数据库连接、格式转换、文件操作、发送邮件等等。提高开发效率,欢迎收藏与转载。
    
     
    数据库连接工具类
    
     
    数据库连接工具类——仅仅获得连接对象 ConnDB.java
    [java] view plain copy
    
        package com.util;  
          
        import java.sql.Connection;  
        import java.sql.DriverManager;  
          
        /** 
         * 数据库连接工具类——仅仅获得连接对象 
         * 
         */  
        public class ConnDB {  
              
            private static Connection conn = null;  
              
            private static final String DRIVER_NAME = "com.mysql.jdbc.Driver";  
          
            private static final String URL = "jdbc:mysql://localhost:3306/axt?useUnicode=true&characterEncoding=UTF-8";  
          
            private static final String USER_NAME = "root";  
          
            private static final String PASSWORD = "root";  
              
            public static Connection getConn(){  
                try {  
                    Class.forName(DRIVER_NAME);  
                    conn = DriverManager.getConnection(URL, USER_NAME, PASSWORD);  
                } catch (Exception e) {  
                    e.printStackTrace();  
                }  
                return conn;  
            }  
        }  
    
    数据库连接工具类——包含取得连接和关闭资源 ConnUtil.java
    
     
    [java] view plain copy
    
        package com.util;  
          
        import java.sql.Connection;  
        import java.sql.DriverManager;  
        import java.sql.PreparedStatement;  
        import java.sql.ResultSet;  
        import java.sql.SQLException;  
          
          
        /**  
         * @className: ConnUtil.java 
         * @classDescription: 数据库连接工具类——包含取得连接和关闭资源  
         * @function:  
         * @author: Wentasy 
         * @createTime: 2012-9-24 上午11:51:15 
         * @modifyTime:  
         * @modifyReason:  
         * @since: JDK 1.6 
         */  
        public class ConnUtil {  
            public static final String url = "jdbc:mysql://XXX.XXX.XXX.XXX:3306/dbadapter";  
            public static final String user = "root";  
            public static final String password = "XXXXXX";  
              
            /** 
             * 得到连接 
             * @return 
             * @throws SQLException 
             * @throws ClassNotFoundException 
             */  
            public static Connection establishConn() throws SQLException,ClassNotFoundException{  
                Class.forName("com.mysql.jdbc.Driver");  
                return DriverManager.getConnection(url, user, password);  
            }  
              
            /** 
             * 关闭连接 
             * @param conn 
             * @throws SQLException 
             */  
            public static void close(Connection conn) throws SQLException{  
                if(conn != null){  
                    conn.close();  
                    conn = null;  
                }  
            }  
              
            /** 
             * 关闭PreparedStatement 
             * @param pstmt 
             * @throws SQLException 
             */  
            public static void close(PreparedStatement pstmt) throws SQLException{  
                if(pstmt != null){  
                    pstmt.close();  
                    pstmt = null;  
                }  
            }  
              
            /** 
             * 关闭结果集 
             * @param rs 
             * @throws SQLException 
             */  
            public static void close(ResultSet rs) throws SQLException{  
                if(rs != null){  
                    rs.close();  
                    rs = null;  
                }  
            }  
        }  
    
    
     
    格式转换工具类
    
     
    日期转换工具类 CommUtil.java
    [java] view plain copy
    
        package com.util;  
          
        import java.text.ParseException;  
        import java.text.SimpleDateFormat;  
        import java.util.Date;  
          
        /** 
         * 日期转换工具类 
         */  
        public class CommUtil {  
          
            /** 
             * 将日期格式转换成yyyy-MM-dd的字符串格式 
             * 返回值如:2010-10-06 
             * @param time 要转换的日期 
             * @return 
             */  
            public static  String dateToString(Date time)  {  
                  
                SimpleDateFormat formatter = new  SimpleDateFormat ("yyyy-MM-dd"); //定义将日期格式要换成的格式  
                String stringTime  =  formatter.format(time);  
              
                return  stringTime;  
                  
              }  
            /** 
             * 将日期格式转换成yyyyMMdd的字符串格式 
             * 返回值如:2010-10-06 
             * @param time 要转换的日期 
             * @return 
             */  
            public static  String dateTimeToString(Date time)  {  
                  
                SimpleDateFormat formatter = new  SimpleDateFormat ("yyyyMMdd"); //定义将日期格式要换成的格式  
                String stringTime  =  formatter.format(time);  
              
                return  stringTime;  
                  
              }  
              
               
            /** 
             * 将日期格式转换成yyyy-MM-dd的字符串格式 
             * 返回值如:2010-10-06 
             * @param time 要转换的日期 
             * @return 
             */  
            public static  Date dateToDate(Date time)  {  
                  
                SimpleDateFormat formatter = new  SimpleDateFormat ("yyyy-MM-dd"); //定义将日期格式要换成的格式  
                String stringTime  =  formatter.format(time);  
             Date date = null;  
            try {  
                date = formatter.parse(stringTime);  
            } catch (ParseException e) {  
                e.printStackTrace();  
            }  
                return  date;  
                  
            }  
              
            /** 
             * 得到当前时间,以字符串表示 
             * @return 
             */  
            public static String getDate(){  
                Date date = new Date();  
                return CommUtil.dateToString(date);  
            }  
        }  
    
    日期转换类  DateConverter.java
    [java] view plain copy
    
        package com.util;  
          
        import java.text.DateFormat;  
        import java.text.SimpleDateFormat;  
        import java.util.Date;  
        import java.util.Map;  
          
        import com.opensymphony.xwork2.conversion.impl.DefaultTypeConverter;  
          
        /** 
         * 日期转换类 
         * 
         */  
        public class DateConverter extends DefaultTypeConverter {  
            private static final DateFormat[] ACCEPT_DATE_FORMATS = {  
                    new SimpleDateFormat("dd/MM/yyyy"),  
                    new SimpleDateFormat("yyyy-MM-dd"),  
                    new SimpleDateFormat("yyyy/MM/dd") }; //支持转换的日期格式   
          
            @Override   
            public Object convertValue(Map context, Object value, Class toType) {   
                if (toType == Date.class) {  //浏览器向服务器提交时,进行String to Date的转换   
                    Date date = null;   
                    String dateString = null;   
                    String[] params = (String[])value;   
                    dateString = params[0];//获取日期的字符串   
                    for (DateFormat format : ACCEPT_DATE_FORMATS) {   
                        try {   
                            return format.parse(dateString);//遍历日期支持格式,进行转换   
                        } catch(Exception e) {   
                            continue;   
                        }   
                    }   
                    return null;   
                }   
                else if (toType == String.class) {   //服务器向浏览器输出时,进行Date to String的类型转换   
                    Date date = (Date)value;   
                    return new SimpleDateFormat("yyyy-MM-dd").format(date);//输出的格式是yyyy-MM-dd   
                }   
                  
                return null;   
            }  
        }  
    
    功能更强大的格式化工具类 FormatUtils.java
    
     
    [java] view plain copy
    
        package com.util;  
          
        import java.text.DecimalFormat;  
        import java.text.ParseException;  
        import java.text.SimpleDateFormat;  
        import java.util.Date;  
          
        /** 
         * 功能更强大的格式化工具类 
         */  
        public class FormatUtils {  
            private static SimpleDateFormat second = new SimpleDateFormat(  
                    "yy-MM-dd hh:mm:ss");  
          
            private static SimpleDateFormat day = new SimpleDateFormat("yyyy-MM-dd");  
            private static SimpleDateFormat detailDay = new SimpleDateFormat("yyyy年MM月dd日");  
            private static SimpleDateFormat fileName = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");  
            private static SimpleDateFormat tempTime = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");  
            private static SimpleDateFormat excelDate = new SimpleDateFormat("yyyy/MM/dd");  
              
            /** 
             * 格式化excel中的时间 
             * @param date 
             * @return 
             */  
            public static String formatDateForExcelDate(Date date) {  
                return excelDate.format(date);  
            }  
              
            /** 
             * 将日期格式化作为文件名 
             * @param date 
             * @return 
             */  
            public static String formatDateForFileName(Date date) {  
                return fileName.format(date);  
            }  
          
            /** 
             * 格式化日期(精确到秒) 
             *  
             * @param date 
             * @return 
             */  
            public static String formatDateSecond(Date date) {  
                return second.format(date);  
            }  
              
            /** 
             * 格式化日期(精确到秒) 
             *  
             * @param date 
             * @return 
             */  
            public static String tempDateSecond(Date date) {  
                return tempTime.format(date);  
            }  
          
            public static Date tempDateSecond(String str) {  
                try {  
                    return tempTime.parse(str);  
                } catch (ParseException e) {  
                    e.printStackTrace();  
                }  
                return new Date();  
            }  
            /** 
             * 格式化日期(精确到天) 
             *  
             * @param date 
             * @return 
             */  
            public static String formatDateDay(Date date) {  
                return day.format(date);  
            }  
              
            /** 
             * 格式化日期(精确到天) 
             *  
             * @param date 
             * @return 
             */  
            public static String formatDateDetailDay(Date date) {  
                return detailDay.format(date);  
            }  
          
            /** 
             * 将double类型的数字保留两位小数(四舍五入) 
             *  
             * @param number 
             * @return 
             */  
            public static String formatNumber(double number) {  
                DecimalFormat df = new DecimalFormat();  
                df.applyPattern("#0.00");  
                return df.format(number);  
            }  
          
            /** 
             * 将字符串转换成日期 
             *  
             * @param date 
             * @return 
             * @throws Exception 
             */  
            public static Date formateDate(String date) throws Exception {  
                return day.parse(date);  
            }  
              
            /** 
             * 将字符日期转换成Date 
             * @param date 
             * @return 
             * @throws Exception 
             */  
            public static Date parseStringToDate(String date) throws Exception {  
                return day.parse(date);  
            }  
              
            public static String formatDoubleNumber(double number) {  
                DecimalFormat df = new DecimalFormat("#");  
                return df.format(number);  
            }  
        }  
    
    
     
    
     
    文件操作工具类
    
     
    目录操作工具类 CopyDir.java
    [java] view plain copy
    
        package com.util;  
          
        import java.io.*;  
          
        /** 
         * 1,建立目的目录。 2,遍历源目录。 3,遍历过程中,创建文件或者文件夹。 原理:其实就是改变了源文件或者目录的目录头。 
         * @datetime  Dsc  24 
         */  
        public class CopyDir {  
            private File sDir, dDir, newDir;  
          
            public CopyDir(String s, String d) {  
                this(new File(s), new File(d));  
            }  
          
            CopyDir(File sDir, File dDir)// c:\Test d:\abc  
            {  
                this.sDir = sDir;  
                this.dDir = dDir;  
            }  
          
            public void copyDir() throws IOException {  
                // 是创建目的目录。也就是创建要拷贝的源文件夹。Test  
                // 获取源文件夹名称。  
                String name = sDir.getName();  
                // 通过该名称在目的目录创建该文件夹,为了存放源文件夹中的文件或者文件夹。  
                // 将目的目录和源文件夹名称,封装成File对象。  
                newDir = dDir;  
                // new File(dDir,name);  
                // 调用该对象的mkdir方法。在目的目录创建该文件夹。d:\abc\Test  
                newDir.mkdir();//  
          
                // 遍历源文件夹。  
                listAll(sDir);  
            }  
          
            /* 
             * 将遍历目录封装成方法。 在遍历过程中,遇到文件创建文件。 遇到目录创建目录。 
             */  
            private void listAll(File dir) throws IOException {  
                File[] files = dir.listFiles();  
                for (int x = 0; x < files.length; x++) {  
                    if (files[x].isDirectory()) {  
                        createDir(files[x]);// 调用创建目录的方法。  
                        listAll(files[x]);// 在继续进行递归。进入子级目录。  
                    } else {  
                        createFile(files[x]);// 调用创建文件的方法。  
                    }  
                }  
            }  
          
            /* 
             * copy目录。通过源目录在目的目录创建新目录。 
             */  
            private void createDir(File dir) {  
                File d = replaceFile(dir);  
                d.mkdir();  
            }  
          
            /* 
             * copy文件。 
             */  
            private void createFile(File file) throws IOException {  
                File newFile = replaceFile(file);  
                // copy文件是一个数据数据传输的过程。需要通过流来完成。  
                FileInputStream fis = new FileInputStream(file);  
                FileOutputStream fos = new FileOutputStream(newFile);  
                byte[] buf = new byte[1024 * 2];  
                int num = 0;  
                while ((num = fis.read(buf)) != -1) {  
                    fos.write(buf, 0, num);  
                }  
                fos.close();  
                fis.close();  
            }  
          
            /* 
             * 替换路径。 
             */  
            private File replaceFile(File f) {  
                // 原理是:将源目录的父目录(C:\Tset),替换成目的父目录。(d:\abc\Test)  
                String path = f.getAbsolutePath();// 获取源文件或者文件夹的决定路径。  
                // 将源文件或者文件夹的绝对路径替换成目的路径。  
                String newPath = path.replace(sDir.getAbsolutePath(), newDir  
                        .getAbsolutePath());  
                // 将新的目的路径封装成File对象  
                File newFile = new File(newPath);  
                return newFile;  
            }  
        }  
    
    文件/目录部分处理工具类 DealDir.java
    [java] view plain copy
    
        package com.util;  
          
        import java.io.File;  
        import java.util.StringTokenizer;  
          
        /** 
         * 文件/目录 部分处理 
         * @createTime Dec 25, 2010 7:06:58 AM 
         * @version 1.0 
         */  
        public class DealDir {  
            /** 
             * 获取文件的后缀名并转化成大写 
             *  
             * @param fileName 
             *            文件名 
             * @return 
             */  
            public String getFileSuffix(String fileName) throws Exception {  
                return fileName.substring(fileName.lastIndexOf(".") + 1,  
                        fileName.length()).toUpperCase();  
            }  
          
            /** 
             * 创建多级目录 
             *  
             * @param path 
             *            目录的绝对路径 
             */  
            public void createMultilevelDir(String path) {  
                try {  
                    StringTokenizer st = new StringTokenizer(path, "/");  
                    String path1 = st.nextToken() + "/";  
                    String path2 = path1;  
                    while (st.hasMoreTokens()) {  
          
                        path1 = st.nextToken() + "/";  
                        path2 += path1;  
                        File inbox = new File(path2);  
                        if (!inbox.exists())  
                            inbox.mkdir();  
          
                    }  
                } catch (Exception e) {  
                    System.out.println("目录创建失败" + e);  
                    e.printStackTrace();  
                }  
          
            }  
          
            /** 
             * 删除文件/目录(递归删除文件/目录) 
             *  
             * @param path 
             *            文件或文件夹的绝对路径 
             */  
            public void deleteAll(String dirpath) {  
                if (dirpath == null) {  
                    System.out.println("目录为空");  
                } else {  
                    File path = new File(dirpath);  
                    try {  
                        if (!path.exists())  
                            return;// 目录不存在退出  
                        if (path.isFile()) // 如果是文件删除  
                        {  
                            path.delete();  
                            return;  
                        }  
                        File[] files = path.listFiles();// 如果目录中有文件递归删除文件  
                        for (int i = 0; i < files.length; i++) {  
                            deleteAll(files[i].getAbsolutePath());  
                        }  
                        path.delete();  
          
                    } catch (Exception e) {  
                        System.out.println("文件/目录 删除失败" + e);  
                        e.printStackTrace();  
                    }  
                }  
            }  
          
            /** 
             * 文件/目录 重命名 
             *  
             * @param oldPath 
             *            原有路径(绝对路径) 
             * @param newPath 
             *            更新路径 
             * @author lyf 注:不能修改上层次的目录 
             */  
            public void renameDir(String oldPath, String newPath) {  
                File oldFile = new File(oldPath);// 文件或目录  
                File newFile = new File(newPath);// 文件或目录  
                try {  
                    boolean success = oldFile.renameTo(newFile);// 重命名  
                    if (!success) {  
                        System.out.println("重命名失败");  
                    } else {  
                        System.out.println("重命名成功");  
                    }  
                } catch (RuntimeException e) {  
                    e.printStackTrace();  
                }  
          
            }  
          
        }  
    
    
    目录处理工具类 DealWithDir.java
    [java] view plain copy
    
        package com.util;  
          
        import java.io.File;  
          
        /** 
         * 目录处理工具类 
         * 
         */  
        public class DealWithDir {  
            /** 
             * 新建目录 
             */  
            public static boolean newDir(String path) throws Exception {  
                File file = new File(path);  
                return file.mkdirs();//创建目录  
            }  
              
            /** 
             * 删除目录 
             */  
            public static boolean deleteDir(String path) throws Exception {  
                File file = new File(path);  
                if (!file.exists())  
                    return false;// 目录不存在退出  
                if (file.isFile()) // 如果是文件删除  
                {  
                    file.delete();  
                    return false;  
                }  
                File[] files = file.listFiles();// 如果目录中有文件递归删除文件  
                for (int i = 0; i < files.length; i++) {  
                    deleteDir(files[i].getAbsolutePath());  
                }  
                file.delete();  
                  
                return file.delete();//删除目录  
            }  
          
            /** 
             * 更新目录 
             */  
            public static boolean updateDir(String path, String newPath) throws Exception {  
                File file = new File(path);  
                File newFile = new File(newPath);  
                return file.renameTo(newFile);  
            }  
              
            public static void main(String d[]) throws Exception{  
                //deleteDir("d:/ff/dddf");  
                updateDir("D:\TOOLS\Tomcat 6.0\webapps\BCCCSM\nationalExperiment/22222", "D:\TOOLS\Tomcat 6.0\webapps\BCCCSM\nationalExperiment/224222");  
            }  
              
              
        }  
    
    
    删除文件夹工具类 DeleteFolder.java
    
     
    [java] view plain copy
    
        package com.util;  
          
        import java.io.File;  
          
        /** 
         * 删除文件夹 
         * @createTime DSC 20, 2010 15:38 
         * @version 2.0 
         */  
        public class DeleteFolder {  
            // 删除文件夹  
            // param folderPath 文件夹完整绝对路径  
            public static void delFolder(String folderPath) {  
                try {  
                    delAllFile(folderPath); // 删除完里面所有内容  
                    String filePath = folderPath;  
                    filePath = filePath.toString();  
                    java.io.File myFilePath = new java.io.File(filePath);  
                    myFilePath.delete(); // 删除空文件夹  
                } catch (Exception e) {  
                    e.printStackTrace();  
                }  
            }  
          
            // 删除指定文件夹下所有文件  
            // param path 文件夹完整绝对路径  
            public static boolean delAllFile(String path) {  
                boolean flag = false;  
                File file = new File(path);  
                if (!file.exists()) {  
                    return flag;  
                }  
                if (!file.isDirectory()) {  
                    return flag;  
                }  
                String[] tempList = file.list();  
                File temp = null;  
                for (int i = 0; i < tempList.length; i++) {  
                    if (path.endsWith(File.separator)) {  
                        temp = new File(path + tempList[i]);  
                    } else {  
                        temp = new File(path + File.separator + tempList[i]);  
                    }  
                    if (temp.isFile()) {  
                        temp.delete();  
                    }  
                    if (temp.isDirectory()) {  
                        delAllFile(path + "/" + tempList[i]);// 先删除文件夹里面的文件  
                        delFolder(path + "/" + tempList[i]);// 再删除空文件夹  
                        flag = true;  
                    }  
                }  
                return flag;  
            }  
          
        }  
    
    
     
    文件上传工具类 UploadUtil.java
    [java] view plain copy
    
        package com.util;  
          
        import java.io.BufferedInputStream;  
        import java.io.BufferedOutputStream;  
        import java.io.File;  
        import java.io.FileInputStream;  
        import java.io.FileOutputStream;  
        import java.io.InputStream;  
        import java.io.OutputStream;  
        import java.util.Calendar;  
          
        /** 
         * 文件上传工具类 
         * 
         */  
        public class UploadUtil {  
            private static final int BUFFER_SIZE = 16 * 1024;  
            //保存图片  
            public static synchronized void copy(File src, File newFile) {  
                  
                try {  
                    InputStream is = null;  
                    OutputStream os = null;  
                    try {  
                        is = new BufferedInputStream(new FileInputStream(src),  
                                BUFFER_SIZE);  
                        os = new BufferedOutputStream(new FileOutputStream(newFile),  
                                BUFFER_SIZE);  
                        byte[] buffer = new byte[BUFFER_SIZE];  
                        while (is.read(buffer) > 0) {  
                            os.write(buffer);  
                        }  
                    } finally {  
                        if (null != is) {  
                            is.close();  
                        }  
                        if (null != os) {  
                            os.close();  
                        }  
                    }  
                } catch (Exception e) {  
                    e.printStackTrace();  
                }  
            }  
          
            /** 
             * 返回 年号+月号+天+时+分+秒+随机码 
             * @return 
             */  
            @SuppressWarnings("static-access")  
            public static synchronized String getTime() {  
                Calendar calendar = Calendar.getInstance();  
                String year = calendar.get(calendar.YEAR) + "";  
                String month = (calendar.get(calendar.MONTH) + 1) + "";  
                String day = calendar.get(calendar.DAY_OF_MONTH) + "";  
                String hour = calendar.get(calendar.HOUR_OF_DAY) + "";  
                String minute = calendar.get(calendar.MINUTE) + "";  
                String second = calendar.get(calendar.SECOND) + "";  
                String milliSecond = calendar.get(calendar.MILLISECOND) + "";  
                int r = (int)(Math.random()*100000);  
                String random = String.valueOf(r);  
                return year + month + day + hour + minute + second + milliSecond + random+"a";  
            }  
          
        }  
    
    
     
    其他工具类
    MD5编码工具类 MD5Code.java
    [java] view plain copy
    
        package com.util;  
        /** 
         * MD5编码工具类 
         * 
         */  
        public class MD5Code {  
            static final int S11 = 7;  
          
            static final int S12 = 12;  
          
            static final int S13 = 17;  
          
            static final int S14 = 22;  
          
            static final int S21 = 5;  
          
            static final int S22 = 9;  
          
            static final int S23 = 14;  
          
            static final int S24 = 20;  
          
            static final int S31 = 4;  
          
            static final int S32 = 11;  
          
            static final int S33 = 16;  
          
            static final int S34 = 23;  
          
            static final int S41 = 6;  
          
            static final int S42 = 10;  
          
            static final int S43 = 15;  
          
            static final int S44 = 21;  
          
            static final byte[] PADDING = { -128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  
                    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  
                    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  
                    0, 0, 0, 0, 0, 0, 0 };  
          
            private long[] state = new long[4];// state (ABCD)  
          
            private long[] count = new long[2];// number of bits, modulo 2^64 (lsb  
          
            // first)  
          
            private byte[] buffer = new byte[64]; // input buffer  
          
          
            public String digestHexStr;  
              
            private byte[] digest = new byte[16];  
          
            public String getMD5ofStr(String inbuf) {  
                md5Init();  
                md5Update(inbuf.getBytes(), inbuf.length());  
                md5Final();  
                digestHexStr = "";  
                for (int i = 0; i < 16; i++) {  
                    digestHexStr += byteHEX(digest[i]);  
                }  
                return digestHexStr;  
            }  
          
            public MD5Code() {  
                md5Init();  
                return;  
            }  
          
            private void md5Init() {  
                count[0] = 0L;  
                count[1] = 0L;  
                // /* Load magic initialization constants.  
                state[0] = 0x67452301L;  
                state[1] = 0xefcdab89L;  
                state[2] = 0x98badcfeL;  
                state[3] = 0x10325476L;  
                return;  
            }  
          
            private long F(long x, long y, long z) {  
                return (x & y) | ((~x) & z);  
            }  
          
            private long G(long x, long y, long z) {  
                return (x & z) | (y & (~z));  
            }  
          
            private long H(long x, long y, long z) {  
                return x ^ y ^ z;  
            }  
          
            private long I(long x, long y, long z) {  
                return y ^ (x | (~z));  
            }  
          
            private long FF(long a, long b, long c, long d, long x, long s, long ac) {  
                a += F(b, c, d) + x + ac;  
                a = ((int) a << s) | ((int) a >>> (32 - s));  
                a += b;  
                return a;  
            }  
          
            private long GG(long a, long b, long c, long d, long x, long s, long ac) {  
                a += G(b, c, d) + x + ac;  
                a = ((int) a << s) | ((int) a >>> (32 - s));  
                a += b;  
                return a;  
            }  
          
            private long HH(long a, long b, long c, long d, long x, long s, long ac) {  
                a += H(b, c, d) + x + ac;  
                a = ((int) a << s) | ((int) a >>> (32 - s));  
                a += b;  
                return a;  
            }  
          
            private long II(long a, long b, long c, long d, long x, long s, long ac) {  
                a += I(b, c, d) + x + ac;  
                a = ((int) a << s) | ((int) a >>> (32 - s));  
                a += b;  
                return a;  
            }  
          
            private void md5Update(byte[] inbuf, int inputLen) {  
                int i, index, partLen;  
                byte[] block = new byte[64];  
                index = (int) (count[0] >>> 3) & 0x3F;  
                // /* Update number of bits */  
                if ((count[0] += (inputLen << 3)) < (inputLen << 3))  
                    count[1]++;  
                count[1] += (inputLen >>> 29);  
                partLen = 64 - index;  
                // Transform as many times as possible.  
                if (inputLen >= partLen) {  
                    md5Memcpy(buffer, inbuf, index, 0, partLen);  
                    md5Transform(buffer);  
                    for (i = partLen; i + 63 < inputLen; i += 64) {  
                        md5Memcpy(block, inbuf, 0, i, 64);  
                        md5Transform(block);  
                    }  
                    index = 0;  
                } else  
                    i = 0;  
                // /* Buffer remaining input */  
                md5Memcpy(buffer, inbuf, index, i, inputLen - i);  
            }  
          
            private void md5Final() {  
                byte[] bits = new byte[8];  
                int index, padLen;  
                // /* Save number of bits */  
                Encode(bits, count, 8);  
                // /* Pad out to 56 mod 64.  
                index = (int) (count[0] >>> 3) & 0x3f;  
                padLen = (index < 56) ? (56 - index) : (120 - index);  
                md5Update(PADDING, padLen);  
                // /* Append length (before padding) */  
                md5Update(bits, 8);  
                // /* Store state in digest */  
                Encode(digest, state, 16);  
            }  
          
            private void md5Memcpy(byte[] output, byte[] input, int outpos, int inpos,  
                    int len) {  
                int i;  
                for (i = 0; i < len; i++)  
                    output[outpos + i] = input[inpos + i];  
            }  
          
            private void md5Transform(byte block[]) {  
                long a = state[0], b = state[1], c = state[2], d = state[3];  
                long[] x = new long[16];  
                Decode(x, block, 64);  
                /* Round 1 */  
                a = FF(a, b, c, d, x[0], S11, 0xd76aa478L); /* 1 */  
                d = FF(d, a, b, c, x[1], S12, 0xe8c7b756L); /* 2 */  
                c = FF(c, d, a, b, x[2], S13, 0x242070dbL); /* 3 */  
                b = FF(b, c, d, a, x[3], S14, 0xc1bdceeeL); /* 4 */  
                a = FF(a, b, c, d, x[4], S11, 0xf57c0fafL); /* 5 */  
                d = FF(d, a, b, c, x[5], S12, 0x4787c62aL); /* 6 */  
                c = FF(c, d, a, b, x[6], S13, 0xa8304613L); /* 7 */  
                b = FF(b, c, d, a, x[7], S14, 0xfd469501L); /* 8 */  
                a = FF(a, b, c, d, x[8], S11, 0x698098d8L); /* 9 */  
                d = FF(d, a, b, c, x[9], S12, 0x8b44f7afL); /* 10 */  
                c = FF(c, d, a, b, x[10], S13, 0xffff5bb1L); /* 11 */  
                b = FF(b, c, d, a, x[11], S14, 0x895cd7beL); /* 12 */  
                a = FF(a, b, c, d, x[12], S11, 0x6b901122L); /* 13 */  
                d = FF(d, a, b, c, x[13], S12, 0xfd987193L); /* 14 */  
                c = FF(c, d, a, b, x[14], S13, 0xa679438eL); /* 15 */  
                b = FF(b, c, d, a, x[15], S14, 0x49b40821L); /* 16 */  
                /* Round 2 */  
                a = GG(a, b, c, d, x[1], S21, 0xf61e2562L); /* 17 */  
                d = GG(d, a, b, c, x[6], S22, 0xc040b340L); /* 18 */  
                c = GG(c, d, a, b, x[11], S23, 0x265e5a51L); /* 19 */  
                b = GG(b, c, d, a, x[0], S24, 0xe9b6c7aaL); /* 20 */  
                a = GG(a, b, c, d, x[5], S21, 0xd62f105dL); /* 21 */  
                d = GG(d, a, b, c, x[10], S22, 0x2441453L); /* 22 */  
                c = GG(c, d, a, b, x[15], S23, 0xd8a1e681L); /* 23 */  
                b = GG(b, c, d, a, x[4], S24, 0xe7d3fbc8L); /* 24 */  
                a = GG(a, b, c, d, x[9], S21, 0x21e1cde6L); /* 25 */  
                d = GG(d, a, b, c, x[14], S22, 0xc33707d6L); /* 26 */  
                c = GG(c, d, a, b, x[3], S23, 0xf4d50d87L); /* 27 */  
                b = GG(b, c, d, a, x[8], S24, 0x455a14edL); /* 28 */  
                a = GG(a, b, c, d, x[13], S21, 0xa9e3e905L); /* 29 */  
                d = GG(d, a, b, c, x[2], S22, 0xfcefa3f8L); /* 30 */  
                c = GG(c, d, a, b, x[7], S23, 0x676f02d9L); /* 31 */  
                b = GG(b, c, d, a, x[12], S24, 0x8d2a4c8aL); /* 32 */  
                /* Round 3 */  
                a = HH(a, b, c, d, x[5], S31, 0xfffa3942L); /* 33 */  
                d = HH(d, a, b, c, x[8], S32, 0x8771f681L); /* 34 */  
                c = HH(c, d, a, b, x[11], S33, 0x6d9d6122L); /* 35 */  
                b = HH(b, c, d, a, x[14], S34, 0xfde5380cL); /* 36 */  
                a = HH(a, b, c, d, x[1], S31, 0xa4beea44L); /* 37 */  
                d = HH(d, a, b, c, x[4], S32, 0x4bdecfa9L); /* 38 */  
                c = HH(c, d, a, b, x[7], S33, 0xf6bb4b60L); /* 39 */  
                b = HH(b, c, d, a, x[10], S34, 0xbebfbc70L); /* 40 */  
                a = HH(a, b, c, d, x[13], S31, 0x289b7ec6L); /* 41 */  
                d = HH(d, a, b, c, x[0], S32, 0xeaa127faL); /* 42 */  
                c = HH(c, d, a, b, x[3], S33, 0xd4ef3085L); /* 43 */  
                b = HH(b, c, d, a, x[6], S34, 0x4881d05L); /* 44 */  
                a = HH(a, b, c, d, x[9], S31, 0xd9d4d039L); /* 45 */  
                d = HH(d, a, b, c, x[12], S32, 0xe6db99e5L); /* 46 */  
                c = HH(c, d, a, b, x[15], S33, 0x1fa27cf8L); /* 47 */  
                b = HH(b, c, d, a, x[2], S34, 0xc4ac5665L); /* 48 */  
                /* Round 4 */  
                a = II(a, b, c, d, x[0], S41, 0xf4292244L); /* 49 */  
                d = II(d, a, b, c, x[7], S42, 0x432aff97L); /* 50 */  
                c = II(c, d, a, b, x[14], S43, 0xab9423a7L); /* 51 */  
                b = II(b, c, d, a, x[5], S44, 0xfc93a039L); /* 52 */  
                a = II(a, b, c, d, x[12], S41, 0x655b59c3L); /* 53 */  
                d = II(d, a, b, c, x[3], S42, 0x8f0ccc92L); /* 54 */  
                c = II(c, d, a, b, x[10], S43, 0xffeff47dL); /* 55 */  
                b = II(b, c, d, a, x[1], S44, 0x85845dd1L); /* 56 */  
                a = II(a, b, c, d, x[8], S41, 0x6fa87e4fL); /* 57 */  
                d = II(d, a, b, c, x[15], S42, 0xfe2ce6e0L); /* 58 */  
                c = II(c, d, a, b, x[6], S43, 0xa3014314L); /* 59 */  
                b = II(b, c, d, a, x[13], S44, 0x4e0811a1L); /* 60 */  
                a = II(a, b, c, d, x[4], S41, 0xf7537e82L); /* 61 */  
                d = II(d, a, b, c, x[11], S42, 0xbd3af235L); /* 62 */  
                c = II(c, d, a, b, x[2], S43, 0x2ad7d2bbL); /* 63 */  
                b = II(b, c, d, a, x[9], S44, 0xeb86d391L); /* 64 */  
                state[0] += a;  
                state[1] += b;  
                state[2] += c;  
                state[3] += d;  
            }  
          
            private void Encode(byte[] output, long[] input, int len) {  
                int i, j;  
                for (i = 0, j = 0; j < len; i++, j += 4) {  
                    output[j] = (byte) (input[i] & 0xffL);  
                    output[j + 1] = (byte) ((input[i] >>> 8) & 0xffL);  
                    output[j + 2] = (byte) ((input[i] >>> 16) & 0xffL);  
                    output[j + 3] = (byte) ((input[i] >>> 24) & 0xffL);  
                }  
            }  
          
            private void Decode(long[] output, byte[] input, int len) {  
                int i, j;  
                for (i = 0, j = 0; j < len; i++, j += 4)  
                    output[i] = b2iu(input[j]) | (b2iu(input[j + 1]) << 8)  
                            | (b2iu(input[j + 2]) << 16) | (b2iu(input[j + 3]) << 24);  
                return;  
            }  
          
            public static long b2iu(byte b) {  
                return b < 0 ? b & 0x7F + 128 : b;  
            }  
              
            public static String byteHEX(byte ib) {  
                char[] Digit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A',  
                        'B', 'C', 'D', 'E', 'F' };  
                char[] ob = new char[2];  
                ob[0] = Digit[(ib >>> 4) & 0X0F];  
                ob[1] = Digit[ib & 0X0F];  
                String s = new String(ob);  
                return s;  
            }  
        }  
    
    
     
    读取Config文件工具类 PropertiesConfig.java
    [java] view plain copy
    
        package com.util;  
          
        import java.io.BufferedInputStream;  
        import java.io.FileInputStream;  
        import java.io.InputStream;  
        import java.util.Properties;  
        /** 
         * 读取Config文件工具类 
         * @version 1.0 
         * @since JDK 1.6 
         */  
        public class PropertiesConfig {    
                
            /**  
             * 获取整个配置文件中的属性 
             * @param filePath 文件路径,即文件所在包的路径,例如:java/util/config.properties  
             */    
            public static Properties readData(String filePath) {    
                filePath = getRealPath(filePath);  
                Properties props = new Properties();    
                try {    
                    InputStream in = new BufferedInputStream(new FileInputStream(filePath));    
                    props.load(in);    
                    in.close();    
                    return props;    
                } catch (Exception e) {    
                    e.printStackTrace();    
                    return null;    
                }    
            }    
              
            private static String getRealPath(String filePath) {  
                //获取绝对路径 并截掉路径的”file:/“前缀    
                return PropertiesConfig.class.getResource("/" + filePath).toString().substring(6);  
            }  
        }    
    
    
    自动扫描FTP文件工具类 ScanFtp.java
    [java] view plain copy
    
        package com.util;  
          
        import java.io.BufferedInputStream;  
        import java.io.BufferedOutputStream;  
        import java.io.File;  
        import java.io.FileInputStream;  
        import java.io.FileOutputStream;  
        import java.io.IOException;  
          
        /** 
         * 自动扫描FTP文件工具类 
         * 需要定时执行 
         */  
        public class ScanFtp {  
            //服务器图片路径文件夹  
            private String serverLocal = "D:/TOOLS/Tomcat 6.0/webapps/BCCCSM/modelforcast/";  
            //图片上传文件夹存放路径,文件夹内应包含AGCM CSM ZS 3个子文件夹分别存放需要扫描到tomcat中的图片  
            private String saveLocal = "D:/modelForcast/";  
            /** 
             * 获得远程权限 
             * @return 
             */  
            private void getFTPAdress(){  
                //登陆成功  
            }  
              
            /** 
             * 开始扫描 
             * @throws IOException  
             */  
            private void scan() throws IOException {  
                this.getFTPAdress();  
                File file = new File(saveLocal + "AGCM");  //打开AGCM  
                File[] array = file.listFiles();  
                String fileName;  
                File fileTemp;  
                for(int i = 0; i < array.length; i++){  
                    if(array[i].isFile()) {  
                        fileTemp = array[i];  
                        fileName = fileTemp.getName();//取出文件名  
                        if (!fileName.equals("humbs.db")) {  
                            this.saveFile(fileTemp, 1);//分析每一个文件名字并存储  
                            System.out.println(fileName + " saved");  
                        }  
                    }     
                }  
                  
                file = new File(saveLocal + "CSM");  //打开CSM  
                array = file.listFiles();  
                for(int i = 0; i < array.length; i++){  
                    if(array[i].isFile()) {  
                        fileTemp = array[i];  
                        fileName = fileTemp.getName();//取出文件名  
                        if (!fileName.equals("humbs.db")) {  
                            this.saveFile(fileTemp, 2);//分析每一个文件名字并存储  
                            System.out.println(fileName + " saved");  
                        }  
                    }     
                }  
                  
                file = new File(saveLocal + "ZS");  //打开ZS  
                array = file.listFiles();  
                for(int i = 0; i < array.length; i++){  
                    if(array[i].isFile()) {  
                        fileTemp = array[i];  
                        fileName = fileTemp.getName();//取出文件名  
                        if (!fileName.equals("humbs.db")) {  
                            this.saveFile(fileTemp, 3);//分析每一个文件名字并存储  
                            System.out.println(fileName + " saved");  
                        }  
                    }     
                }  
                  
          
            }  
              
            /** 
             * 开始执行 
             * @throws IOException  
             */  
            public void execute() throws IOException{  
                scan();//开始扫描  
            }  
              
            /** 
             * 按类型存储 
             * @param file 
             * @param type 
             * @throws IOException  
             */  
            private void saveFile(File file, int type) throws IOException {  
                String fileName = file.getName();  
                //类型A C 和 指数3种  
                String year = fileName.substring(1, 5);//获得发布年份  
                String date = fileName.substring(5, 9);//获得发布日期包含月日  
                String var = null;//获得变量名字  
                String dir = serverLocal;//存储目录名字  
                if (type == 1 ) {  
                    var = fileName.substring(11, 15);  
                    dir = dir + "AGCM/" + var + "/" + year + "/" + date;  
                } else if(type == 2) {  
                    var = fileName.substring(11, 15);  
                    dir = dir + "CSM/" + var + "/" + year + "/" + date;  
                } else {  
                    var = fileName.substring(11, 15);//指数的暂时没处理  
                    dir = dir + "ZS/" + var + "/" + year + "/" + date;  
                }  
                //判断是否存在这样的目录没有就自动创建  
                File savePath = new File(dir);  
                if(!savePath.exists()) {  
                    savePath.mkdirs();  
                }  
                File saveFile = new File(dir + "/" + fileName);  
                if(!saveFile.exists()){//如果不存在,就存文件  
                    FileInputStream fis = null;//这里用本地复制暂时代替FTP  
                    FileOutputStream fos =null;  
                    BufferedInputStream bis =null;  
                    BufferedOutputStream bos =null;    
                    int c;  
                    fis = new FileInputStream(file);  
                    bis = new BufferedInputStream(fis);  
                    fos = new FileOutputStream(dir + "/" + fileName);  
                    bos = new BufferedOutputStream(fos);  
                    while((c = bis.read())!= -1)  
                        bos.write(c);  
                    bos.flush();  
                    if(bos != null) bos.close();  
                    if(bis != null) bis.close();  
                    if(fos != null) fos.close();  
                    if(fis != null) fos.close();  
                } else {  
                    System.out.println("文件已经存在,不进行存储,可清理当前文件.");  
                }  
            }  
              
              
            /** 
             * 测试方法 
             * @param argv 
             * @throws IOException  
             */  
            public static void main(String argv[])  {  
                ScanFtp s = new ScanFtp();  
                try {  
                    s.scan();  
                } catch (IOException e) {  
                    // TODO Auto-generated catch block  
                    e.printStackTrace();  
                }  
            }  
        }  
    
    
    邮件发送工具类 SendMail.java
    [java] view plain copy
    
        package com.util;  
          
        import org.apache.commons.mail.EmailException;  
        import org.apache.commons.mail.SimpleEmail;  
          
        /** 
         * 邮件发送工具类 
         */  
        public class SendMail {  
            private String hostName;//设置smtp服务器  
            private String sendMailAddress;//设置发送地址  
            private String mailPassword;//设置密码  
            private boolean TLS = false;//设置是否需要TLS登录  
            private String[] getMailAddress;//设置接收地址s  
            private String mailTitle;//设置标题  
            private String mailContent;//设置邮件内容  
          
            public  void  send(){  
                SimpleEmail email = new SimpleEmail();  
                email.setTLS(TLS); //是否TLS校验,,某些邮箱需要TLS安全校验,同理有SSL校验    
                email.setHostName(hostName);  
                try {  
                    email.setFrom(sendMailAddress, sendMailAddress);  
                    email.setAuthentication(sendMailAddress, mailPassword);  
                    email.setCharset("utf-8");//解决中文乱码问题  
                    email.setSubject(mailTitle); //标题         
                    email.setMsg(mailContent);//内容    
                    for(int i = 0; i < getMailAddress.length; ++i){  
                        email.addTo(getMailAddress[i]); //接收方  
                        email.send();  
                    }  
                          
                      
                } catch (EmailException e) {  
                //  e.printStackTrace();  
                }  
            }  
          
            public String getHostName() {  
                return hostName;  
            }  
          
            public void setHostName(String hostName) {  
                this.hostName = hostName;  
            }  
          
            public String getSendMailAddress() {  
                return sendMailAddress;  
            }  
          
            public void setSendMailAddress(String sendMailAddress) {  
                this.sendMailAddress = sendMailAddress;  
            }  
          
            public String getMailPassword() {  
                return mailPassword;  
            }  
          
            public void setMailPassword(String mailPassword) {  
                this.mailPassword = mailPassword;  
            }  
          
            public boolean isTLS() {  
                return TLS;  
            }  
          
            public void setTLS(boolean tls) {  
                TLS = tls;  
            }  
          
            public String[] getGetMailAddress() {  
                return getMailAddress;  
            }  
          
            public void setGetMailAddress(String[] getMailAddress) {  
                this.getMailAddress = getMailAddress;  
            }  
          
            public String getMailTitle() {  
                return mailTitle;  
            }  
          
            public void setMailTitle(String mailTitle) {  
                this.mailTitle = mailTitle;  
            }  
          
            public String getMailContent() {  
                return mailContent;  
            }  
          
            public void setMailContent(String mailContent) {  
                this.mailContent = mailContent;  
            }  
        }  
    
    
    分页工具类 SharePager.java
    [java] view plain copy
    
        package com.util;  
          
          
        /** 
         * 分页工具类 
         * 
         */  
        public class SharePager {  
            private int totalRows; //总行数  
            private int pageSize = 20; //每页显示的行数    
            private int currentPage; //当前页号  
            private int totalPages; //总页数   
            private int startRow; //当前页在数据库中的起始行    
             
          
            /** 
             * 默认构造函数 
             */  
            public SharePager()   
            {    
                  
            }    
                
            /**默认每页10行 
             * @param totalRows  
             */    
            public SharePager(int totalRows)   
            {    
                this.totalRows = totalRows;    
          
                totalPages =(int) Math.ceil((double)totalRows / (double)pageSize);    
                startRow = 0;    
            }    
                
                
            /**可自定义每页显示多少页 
             * @param totalRows  
             * @param pageSize  
             */    
            public SharePager(int totalRows, int pageSize)   
            {    
                this.totalRows = totalRows;    
                this.pageSize = pageSize;   
                if(this.pageSize<1)                 
                    this.pageSize=1;  
                else if(pageSize>20)  
                    this.pageSize=20;  
          
        //        if(this.pageSize>totalRows){  
        //          this.pageSize=(int)totalRows;  
        //        }  
                  
              
          
                totalPages =(int) Math.ceil((double)totalRows / (double)this.pageSize);     
                currentPage = 1;    
                startRow = 0;    
            }    
                
            /** 
             * 跳转到首页 
             */  
            public void first()   
            {    
                this.currentPage = 1;    
                this.startRow = 0;   
            }    
              
            /** 
             * 跳转到上一页 
             */  
            public void previous()   
            {    
                if (currentPage == 1)   
                {    
                    return;    
                }    
                currentPage--;    
                startRow = (currentPage-1) * pageSize;    
           }    
              
            /** 
             * 跳转到下一页 
             */  
            public void next()   
            {    
                if (currentPage < totalPages)  
                {    
                    currentPage++;    
                }    
                startRow = (currentPage-1) * pageSize;    
            }    
              
            /** 
             *  跳转到尾页 
             */  
            public void last()   
            {    
                this.currentPage = totalPages;    
                if(currentPage<1){  
                    currentPage = 1;  
                }  
                this.startRow = (currentPage-1) * this.pageSize;  
                totalPages =(int) Math.ceil((double)totalRows / (double)this.pageSize);     
                  
            }    
              
            /** 
             * 跳转到指定页 
             * @param currentPage   指定的页 
             */  
            public void refresh(int currentPage)   
            {    
                  
                if(currentPage < 0)  
                {  
                    first();  
                }  
                if (currentPage > totalPages)   
                {    
                    last();    
                }else{  
                    this.currentPage = currentPage;  
                    this.startRow = (currentPage-1) * this.pageSize;  
                  }  
           
            }    
               
                
            public int getStartRow()  
            {    
                return startRow;    
            }    
              
            public int getTotalPages()  
            {    
                return totalPages;    
            }    
              
            public int getCurrentPage()  
            {    
                return currentPage;    
            }    
              
            public int getPageSize()   
            {    
                return pageSize;    
            }    
              
            public void setTotalRows(int totalRows)   
            {    
                this.totalRows = totalRows;    
            }    
              
            public void setStartRow(int startRow)  
            {    
                this.startRow = startRow;    
            }    
              
            public void setTotalPages(int totalPages)   
            {    
                this.totalPages = totalPages;    
            }    
              
            public void setCurrentPage(int currentPage)   
            {    
                this.currentPage = currentPage;    
            }   
              
            public void setPageSize(int pageSize)   
            {    
                this.pageSize = pageSize;    
            }    
              
            public int getTotalRows()   
            {    
                return totalRows;    
            }    
        }  


  • 相关阅读:
    2.4 自给自足的脚本:位于第一行的#!
    2.3 一个简单的脚本
    2.2 为什么要使用Shell脚本
    JSON 字符串 与 java 对象的转换
    ajax异步提交文件
    jquery选择器
    发现前端框架 bui-min.js
    学习hsf
    Git详解
    java学习材料
  • 原文地址:https://www.cnblogs.com/miaozhenzhong/p/5931009.html
Copyright © 2020-2023  润新知