=============commons-fileupload ================
common-fileupload组件是apache的一个开源项目之一，可以从http://jakarta.apache.org/commons/fileupload/下载。该组件简单易用，可实现一次上传一个或多个文件，并可限制文件大小。
-下载后解压zip包，将commons-fileupload-1.1.1.jar,和commons-io-1.2.jar复制到tomcat的webapps\你的webapp\WEB-INF\lib\下，如果目录不存在请自建目录。
新建一个servlet: FileUpload.java用于文件上传：
package com.drp.util.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.*;
import java.util.*;
import java.util.regex.*;
import java.io.*;
import org.apache.commons.fileupload.servlet.*;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
public class FileUpload extends HttpServlet {
private String uploadPath = ""; // 用于存放上传文件的目录
private File tempPath = new File("D:\\Tomcat 5.5\\webapps\\drp1.2\\tempimages\\"); // 用于存放临时文件的目录
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
res.setContentType("text/html; charset=GB18030");
PrintWriter out = res.getWriter();
System.out.println(req.getContentLength());
System.out.println(req.getContentType());
DiskFileItemFactory factory = new DiskFileItemFactory();
// maximum size that will be stored in memory
//允许设置内存中存储数据的门限，单位：字节
factory.setSizeThreshold(4096);
// the location for saving data that is larger than getSizeThreshold()
//如果文件大小大于SizeThreshold，则保存到临时目录
factory.setRepository(new File("D:\\Tomcat 5.5\\webapps\\drp1.2\\tempimages"));
ServletFileUpload upload = new ServletFileUpload(factory);
// maximum size before a FileUploadException will be thrown
//最大上传文件，单位：字节
upload.setSizeMax(1000000);
try {
List fileItems = upload.parseRequest(req);
// assume we know there are two files. The first file is a small
// text file, the second is unknown and is written to a file on
// the server
Iterator iter = fileItems.iterator();
// 正则匹配，过滤路径取文件名
String regExp = ".+\\\\(.+)$";
// 过滤掉的文件类型
String[] errorType = { ".exe", ".com", ".cgi", ".asp" };
Pattern p = Pattern.compile(regExp);
String itemNo = "";//文件存放路径
while (iter.hasNext()) {
FileItem item = (FileItem) iter.next();
// 忽略其他不是文件域的所有表单信息
if (!item.isFormField()) {
String name = item.getName();
long size = item.getSize();
if ((name == null || name.equals("")) && size == 0)
continue;
Matcher m = p.matcher(name);
boolean result = m.find();
if (result) {
for (int temp = 0; temp < errorType.length; temp++) {
if (m.group(1).endsWith(errorType[temp])) {
throw new IOException(name + ": wrong type");
}
}
try {
// 保存上传的文件到指定的目录
// 在下文中上传文件至数据库时，将对这里改写
item.write(new File("d:\\" + m.group(1)));
out.print(name+" "+size+"<br>");
} catch (Exception e) {
out.println(e);
}
} else {
throw new IOException("fail to upload");
}
}
}
} catch (IOException e) {
out.println(e);
} catch (FileUploadException e) {
out.println(e);
}
}
public void init() throws ServletException {
this.uploadPath = this.getServletConfig().getInitParameter("upload_path");//的到web.xml中的配置文件用于保存上传文件，也可以在已开始定义的时候初始化，不过这样可以通过改动配置文件来改动存放路径，不用该代码，增加了灵活性。
}
}
web.xml中相应的配置如下：
<servlet>
<servlet-name>FileUpload</servlet-name>
<servlet-class>com.drp.util.servlet.FileUpload</servlet-class>//注意路径
<init-param>
<param-name>upload_path</param-name>
<param-value>D:\\Tomcat 5.5\\webapps\\drp1.2\\images\\item\\</param-value>//存放地址 </init-param>
</servlet>
<servlet-mapping>
<servlet-name>FileUpload</servlet-name>
<url-pattern>/servlet/FileUpload</url-pattern>
</servlet-mapping>
对应的请求文件：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>index.html</title>
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<!--<link rel="stylesheet" type="text/css" href="./styles.css">-->
</head>
<body>
//注意action地址，还有enctype要写成multipart/form-data，和method="POST" <form name="uploadform" method="POST" action="./servlet/FileUpload" ENCTYPE="multipart/form-data">
<table border="1" width="450" cellpadding="4" cellspacing="2" bordercolor="#9BD7FF">
<tr><td width="100%" colspan="2">
文件1：<input name="x" size="40" type="file">
</td></tr>
<tr><td width="100%" colspan="2">
文件2：<input name="y" size="40" type="file">
</td></tr>
<tr><td width="100%" colspan="2">
文件3：<input name="z" size="40" type="file">
</td></tr>
</table>
<br/><br/>
<table>
<tr><td align="center"><input name="upload" type="submit" value="开始上传"/></td></tr>
</table>
</form>
</body>
</html>
第二个组件SmartUpload
=================SmartUpload=================================================
SmartUpload.zip 下载地址： http://dev2dev.bea.com.cn/bbs/servlet/D2DServlet/download/121-20468-118409-1176/SmartUpload.zip
解压后有6个主要文件：ServletUpload.java，SmartFile.java，SmartFiles.java，SmartRequest.java，SmartUpload.java， SmartUploadException.java 将其放在你的javabeen目录下，注意每个文件的包名和你的存放位置是否相否，
由于不能传中文，根据网站上的介绍对其中的SmartUpload.java做修改添加toUtf8String(String s)方法：
改动后SmartUpload.java的全部代码如下：红色代表改动的部分：
package com.drp.upload;//写你自己的包名
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Vector;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.PageContext;
public class SmartUpload
{
protected byte m_binArray[];
protected HttpServletRequest m_request;
protected HttpServletResponse m_response;
protected ServletContext m_application;
private int m_totalBytes;
private int m_currentIndex;
private int m_startData;
private int m_endData;
private String m_boundary;
private long m_totalMaxFileSize;
private long m_maxFileSize;
private Vector m_deniedFilesList;
private Vector m_allowedFilesList;
private boolean m_denyPhysicalPath;
//private boolean m_forcePhysicalPath;
private String m_contentDisposition;
public static final int SAVE_AUTO = 0;
public static final int SAVE_VIRTUAL = 1;
public static final int SAVE_PHYSICAL = 2;
private SmartFiles m_files;
private SmartRequest m_formRequest;
public SmartUpload()
{
m_totalBytes = 0;
m_currentIndex = 0;
m_startData = 0;
m_endData = 0;
m_boundary = ""; //new String();
m_totalMaxFileSize = 0L;
m_maxFileSize = 0L;
m_deniedFilesList = new Vector();
m_allowedFilesList = new Vector();
m_denyPhysicalPath = false;
//m_forcePhysicalPath = false;
m_contentDisposition = ""; //new String();
m_files = new SmartFiles();
m_formRequest = new SmartRequest();
}
/**
* @deprecated Method init is deprecated
*/
public final void init(ServletConfig servletconfig) throws ServletException
{
m_application = servletconfig.getServletContext();
}
/**
* @deprecated Method service is deprecated
*/
public void service(HttpServletRequest httpservletrequest,HttpServletResponse httpservletresponse) throws
ServletException,IOException
{
m_request = httpservletrequest;
m_response = httpservletresponse;
}
public final void initialize(ServletConfig servletconfig,HttpServletRequest
httpservletrequest,HttpServletResponse httpservletresponse) throws ServletException
{
m_application = servletconfig.getServletContext();
m_request = httpservletrequest;
m_response = httpservletresponse;
}
public final void initialize(PageContext pagecontext) throws ServletException
{
m_application = pagecontext.getServletContext();
m_request = (HttpServletRequest)pagecontext.getRequest();
m_response = (HttpServletResponse)pagecontext.getResponse();
}
/**
* @deprecated Method initialize is deprecated
*/
public final void initialize(ServletContext servletcontext,HttpSession httpsession,HttpServletRequest
httpservletrequest,HttpServletResponse httpservletresponse,JspWriter jspwriter) throws ServletException
{
m_application = servletcontext;
m_request = httpservletrequest;
m_response = httpservletresponse;
}
public void upload() throws ServletException,IOException,SmartUploadException
{
int i = 0;
//boolean flag = false;
boolean flag1 = false;
//boolean flag2 = false;
long l = 0L;
//String s = "";//new String();
//String s2 = "";//new String();
String s4 = ""; //new String();
String s5 = ""; //new String();
String s6 = ""; //new String();
String s7 = ""; //new String();
String s8 = ""; //new String();
String s9 = ""; //new String();
String s10 = ""; //new String();
m_totalBytes = m_request.getContentLength();
m_binArray = new byte[m_totalBytes];
int j;
for(;i < m_totalBytes;i += j)
{
try
{
m_request.getInputStream();
j = m_request.getInputStream().read(m_binArray,i,m_totalBytes - i);
}
catch(Exception exception)
{
throw new SmartUploadException("Unable to upload.");
}
}
for(;!flag1 && m_currentIndex < m_totalBytes;m_currentIndex++)
{
if(m_binArray[m_currentIndex] == 13)
{
flag1 = true;
}
else
{
m_boundary = m_boundary + (char)m_binArray[m_currentIndex];
}
}
if(m_currentIndex == 1)
{
return;
}
for(m_currentIndex++;m_currentIndex < m_totalBytes;m_currentIndex = m_currentIndex + 2)
{
String s1 = getDataHeader();
m_currentIndex = m_currentIndex + 2;
boolean flag3 = s1.indexOf("filename") > 0;
String s3 = getDataFieldValue(s1,"name");
if(flag3)
{
s6 = getDataFieldValue(s1,"filename");
s4 = getFileName(s6);
s5 = getFileExt(s4);
s7 = getContentType(s1);
s8 = getContentDisp(s1);
s9 = getTypeMIME(s7);
s10 = getSubTypeMIME(s7);
}
getDataSection();
if(flag3 && s4.length() > 0)
{
if(m_deniedFilesList.contains(s5))
{
throw new SecurityException("The extension of the file is denied to be uploaded (1015).");
}
if(!m_allowedFilesList.isEmpty() && !m_allowedFilesList.contains(s5))
{
throw new SecurityException("The extension of the file is not allowed to be uploaded
(1010).");
}
if(m_maxFileSize > 0L && (long)((m_endData - m_startData) + 1) > m_maxFileSize)
{
throw new SecurityException("Size exceeded for this file : " + s4 + " (1105).");
}
l += (m_endData - m_startData) + 1;
if(m_totalMaxFileSize > 0L && l > m_totalMaxFileSize)
{
throw new SecurityException("Total File Size exceeded (1110).");
}
}
if(flag3)
{
SmartFile file = new SmartFile();
file.setParent(this);
file.setFieldName(s3);
file.setFileName(s4);
file.setFileExt(s5);
file.setFilePathName(s6);
file.setIsMissing(s6.length() == 0);
file.setContentType(s7);
file.setContentDisp(s8);
file.setTypeMIME(s9);
file.setSubTypeMIME(s10);
if(s7.indexOf("application/x-macbinary") > 0)
{
m_startData = m_startData + 128;
}
file.setSize((m_endData - m_startData) + 1);
file.setStartData(m_startData);
file.setEndData(m_endData);
m_files.addFile(file);
}
else
{
String s11 = new String(m_binArray,m_startData,(m_endData - m_startData) + 1);
m_formRequest.putParameter(s3,s11);
}
if((char)m_binArray[m_currentIndex + 1] == '-')
{
break;
}
}
}
public int save(String s) throws ServletException,IOException,SmartUploadException
{
return save(s,0);
}
public int save(String s,int i) throws ServletException,IOException,SmartUploadException
{
int j = 0;
if(s == null)
{
s = m_application.getRealPath("/");
//System.out.println("s == null,m_application.getRealPath:" + s);
}
if(s.indexOf("/") != -1)
{
if(s.charAt(s.length() - 1) != '/')
{
s = s + "/";
//System.out.println("m_application.getRealPath::" + s);
}
}
else
{
if(s.charAt(s.length() - 1) != '\\')
{
s = s + "\\";
//System.out.println("m_application.getRealPath" + s);
}
}
//System.out.println("m_application.getRealPath:::" + s);
FileNames = new String[m_files.getCount()];
for(int k = 0;k < m_files.getCount();k++)
{
if(!m_files.getFile(k).isMissing())
{
//System.out.println("s + m_files.getFile(k).getFileName():" + s + m_files.getFile
(k).getFileName());
m_files.getFile(k).saveAs(s + m_files.getFile(k).getFileName(),i);
FileNames[j] = s + m_files.getFile(k).getFileName();
j++;
}
}
return j;
}
//Add
private String[] FileNames;
public String[] getFileNames()
{
//Method may expose internal representation by returning array
//Returning an array value stored in one of the object's fields exposes the internal representation of
the object.? For classes shared by other untrusted classes, this could potentially be a security issue.?
Returning a new copy of the array is better approach in many situations.
String[] vFileNames = new String[FileNames.length];
System.arraycopy(FileNames,0,vFileNames,0,FileNames.length);
return vFileNames;
}
public int getSize()
{
return m_totalBytes;
}
public byte getBinaryData(int i)
{
byte byte0;
try
{
byte0 = m_binArray[i];
}
catch(Exception exception)
{
throw new ArrayIndexOutOfBoundsException("Index out of range (1005).");
}
return byte0;
}
public SmartFiles getFiles()
{
return m_files;
}
public SmartRequest getRequest()
{
return m_formRequest;
}
public void downloadFile(String s) throws ServletException,IOException,SmartUploadException
{
downloadFile(s,null,null);
}
public void downloadFile(String s,String s1) throws
ServletException,IOException,SmartUploadException,SmartUploadException
{
downloadFile(s,s1,null);
}
public void downloadFile(String s,String s1,String s2) throws
ServletException,IOException,SmartUploadException
{
downloadFile(s,s1,s2,65000);
}
public void downloadFile(String s, String s1, String s2, int i)
throws ServletException, IOException, SmartUploadException
{
if(s == null)
throw new IllegalArgumentException("File '" + s +
"' not found (1040).");
if(s.equals(""))
throw new IllegalArgumentException("File '" + s +
"' not found (1040).");
if(!isVirtual(s) && m_denyPhysicalPath)
throw new SecurityException("Physical path is denied (1035).");
if(isVirtual(s))
s = m_application.getRealPath(s);
java.io.File file = new java.io.File(s);
FileInputStream fileinputstream = new FileInputStream(file);
long l = file.length();
boolean flag = false;
int k = 0;
byte abyte0[] = new byte[i];
if(s1 == null)
m_response.setContentType("application/x-msdownload");
else
if(s1.length() == 0)
m_response.setContentType("application/x-msdownload");
else
m_response.setContentType(s1);
m_response.setContentLength((int)l);
m_contentDisposition = m_contentDisposition != null ?
m_contentDisposition : "attachment;";
if(s2 == null)
m_response.setHeader("Content-Disposition",
m_contentDisposition + " filename=" +
toUtf8String(getFileName(s)));
else
if(s2.length() == 0)
m_response.setHeader("Content-Disposition",
m_contentDisposition);
else
m_response.setHeader("Content-Disposition",
m_contentDisposition + " filename=" + toUtf8String(s2));
while((long)k < l)
{
int j = fileinputstream.read(abyte0, 0, i);
k += j;
m_response.getOutputStream().write(abyte0, 0, j);
}
fileinputstream.close();
}
public static String toUtf8String(String s) {
StringBuffer sb = new StringBuffer();
for (int i=0;i<s.length();i++) {
char c = s.charAt(i);
if (c >= 0 && c <= 255) {
sb.append(c);
} else {
byte[] b;
try {
b = Character.toString(c).getBytes("utf-8");
} catch (Exception ex) {
System.out.println(ex);
b = new byte[0];
}
for (int j = 0; j < b.length; j++) {
int k = b[j];
if (k < 0) k += 256;
sb.append("%" + Integer.toHexString(k).
toUpperCase());
}
}
}
return sb.toString();
}
public void downloadField(ResultSet resultset,String s,String s1,String s2) throws
ServletException,IOException,SQLException
{
if(resultset == null)
{
throw new IllegalArgumentException("The RecordSet cannot be null (1045).");
}
if(s == null)
{
throw new IllegalArgumentException("The columnName cannot be null (1050).");
}
if(s.length() == 0)
{
throw new IllegalArgumentException("The columnName cannot be empty (1055).");
}
byte abyte0[] = resultset.getBytes(s);
if(s1 == null)
{
m_response.setContentType("application/x-msdownload");
}
else
{
if(s1.length() == 0)
{
m_response.setContentType("application/x-msdownload");
}
else
{
m_response.setContentType(s1);
}
}
m_response.setContentLength(abyte0.length);
if(s2 == null)
{
m_response.setHeader("Content-Disposition","attachment;");
}
else
{
if(s2.length() == 0)
{
m_response.setHeader("Content-Disposition","attachment;");
}
else
{
m_response.setHeader("Content-Disposition","attachment; filename=" + s2);
}
}
m_response.getOutputStream().write(abyte0,0,abyte0.length);
}
public void fieldToFile(ResultSet resultset,String s,String s1) throws
ServletException,IOException,SmartUploadException,SQLException
{
try
{
if(m_application.getRealPath(s1) != null)
{
s1 = m_application.getRealPath(s1);
}
InputStream inputstream = resultset.getBinaryStream(s);
FileOutputStream fileoutputstream = new FileOutputStream(s1);
int i;
while((i = inputstream.read()) != -1)
{
fileoutputstream.write(i);
}
fileoutputstream.close();
}
catch(Exception exception)
{
throw new SmartUploadException("Unable to save file from the DataBase (1020).");
}
}
private String getDataFieldValue(String s,String s1)
{
String s2 = ""; // = new String();
String s3 = ""; // = new String();
int i = 0;
//boolean flag = false;
//boolean flag1 = false;
//boolean flag2 = false;
s2 = s1 + "=" + '"';
i = s.indexOf(s2);
if(i > 0)
{
int j = i + s2.length();
int k = j;
s2 = "\"";
int l = s.indexOf(s2,j);
if(k > 0 && l > 0)
{
s3 = s.substring(k,l);
}
}
return s3;
}
private String getFileExt(String s)
{
String s1; // = new String();
int i = 0;
int j = 0;
if(s == null)
{
return null;
}
i = s.lastIndexOf('.') + 1;
j = s.length();
s1 = s.substring(i,j);
if(s.lastIndexOf('.') > 0)
{
return s1;
}
else
{
return "";
}
}
private String getContentType(String s)
{
String s1 = ""; // = new String();
String s2 = ""; // = new String();
int i = 0;
//boolean flag = false;
s1 = "Content-Type:";
i = s.indexOf(s1) + s1.length();
if(i != -1)
{
int j = s.length();
s2 = s.substring(i,j);
}
return s2;
}
private String getTypeMIME(String s)
{
//String s1 = new String();
int i = 0;
i = s.indexOf("/");
if(i != -1)
{
return s.substring(1,i);
}
else
{
return s;
}
}
private String getSubTypeMIME(String s)
{
//String s1 = new String();
//boolean flag = false;
int i = 0;
i = s.indexOf("/") + 1;
if(i != -1)
{
int j = s.length();
return s.substring(i,j);
}
else
{
return s;
}
}
private String getContentDisp(String s)
{
//String s1 = new String();
String s1 = "";
int i = 0;
int j = 0;
i = s.indexOf(":") + 1;
j = s.indexOf(";");
s1 = s.substring(i,j);
return s1;
}
private void getDataSection()
{
//boolean flag = false;
//String s = "";
//String s = new String();
int i = m_currentIndex;
int j = 0;
int k = m_boundary.length();
m_startData = m_currentIndex;
m_endData = 0;
while(i < m_totalBytes)
{
if(m_binArray[i] == (byte)m_boundary.charAt(j))
{
if(j == k - 1)
{
m_endData = ((i - k) + 1) - 3;
break;
}
i++;
j++;
}
else
{
i++;
j = 0;
}
}
m_currentIndex = m_endData + k + 3;
}
private String getDataHeader()
{
//boolean flag = false;
int i = m_currentIndex;
int j = 0;
for(boolean flag1 = false;!flag1;)
{
if(m_binArray[m_currentIndex] == 13 && m_binArray[m_currentIndex + 2] == 13)
{
flag1 = true;
j = m_currentIndex - 1;
m_currentIndex = m_currentIndex + 2;
}
else
{
m_currentIndex++;
}
}
String s = new String(m_binArray,i,(j - i) + 1);
return s;
}
private String getFileName(String s)
{
//String s1 = ""; // = new String();
//String s2 = ""; // = new String();
//boolean flag = false;
//boolean flag1 = false;
//boolean flag2 = false;
int i = 0;
i = s.lastIndexOf('/');
if(i != -1)
{
return s.substring(i + 1,s.length());
}
i = s.lastIndexOf('\\');
if(i != -1)
{
return s.substring(i + 1,s.length());
}
else
{
return s;
}
}
public void setDeniedFilesList(String s) throws ServletException,IOException,SQLException
{
//String s1 = "";
if(s != null)
{
String s2 = "";
for(int i = 0;i < s.length();i++)
{
if(s.charAt(i) == ',')
{
if(!m_deniedFilesList.contains(s2))
{
m_deniedFilesList.addElement(s2);
}
s2 = "";
}
else
{
s2 = s2 + s.charAt(i);
}
}
//if(s2 != "")
if(!s2.equals(""))
{
m_deniedFilesList.addElement(s2);
}
}
else
{
m_deniedFilesList = null;
}
}
public void setAllowedFilesList(String s)
{
//String s1 = "";
if(s != null)
{
String s2 = "";
for(int i = 0;i < s.length();i++)
{
if(s.charAt(i) == ',')
{
if(!m_allowedFilesList.contains(s2))
{
m_allowedFilesList.addElement(s2);
}
s2 = "";
}
else
{
s2 = s2 + s.charAt(i);
}
}
//if(s2 != "")
if(!s2.equals(""))
{
m_allowedFilesList.addElement(s2);
}
}
else
{
m_allowedFilesList = null;
}
}
public void setDenyPhysicalPath(boolean flag)
{
m_denyPhysicalPath = flag;
}
public void setForcePhysicalPath(boolean flag)
{
//m_forcePhysicalPath = flag;
}
public void setContentDisposition(String s)
{
m_contentDisposition = s;
}
public void setTotalMaxFileSize(long l)
{
m_totalMaxFileSize = l;
}
public void setMaxFileSize(long l)
{
m_maxFileSize = l;
}
protected String getPhysicalPath(String s,int i) throws IOException
{
String s1 = ""; //new String();
String s2 = ""; //new String();
String s3 = ""; //new String();
boolean flag = false;
s3 = System.getProperty("file.separator");
if(s == null)
{
throw new IllegalArgumentException("There is no specified destination file (1140).");
}
if(s.equals(""))
{
throw new IllegalArgumentException("There is no specified destination file (1140).");
}
if(s.lastIndexOf("\\") >= 0)
{
s1 = s.substring(0,s.lastIndexOf("\\"));
s2 = s.substring(s.lastIndexOf("\\") + 1);
}
if(s.lastIndexOf("/") >= 0)
{
s1 = s.substring(0,s.lastIndexOf("/"));
s2 = s.substring(s.lastIndexOf("/") + 1);
}
s1 = s1.length() != 0 ? s1 : "/";
java.io.File file = new java.io.File(s1);
if(file.exists())
{
flag = true;
}
if(i == 0)
{
if(isVirtual(s1))
{
s1 = m_application.getRealPath(s1);
if(s1.endsWith(s3))
{
s1 = s1 + s2;
}
else
{
s1 = s1 + s3 + s2;
}
return s1;
}
if(flag)
{
if(m_denyPhysicalPath)
{
throw new IllegalArgumentException("Physical path is denied (1125).");
}
else
{
return s;
}
}
else
{
throw new IllegalArgumentException("This path does not exist (1135).");
}
}
if(i == 1)
{
if(isVirtual(s1))
{
s1 = m_application.getRealPath(s1);
if(s1.endsWith(s3))
{
s1 = s1 + s2;
}
else
{
s1 = s1 + s3 + s2;
}
return s1;
}
if(flag)
{
throw new IllegalArgumentException("The path is not a virtual path.");
}
else
{
throw new IllegalArgumentException("This path does not exist (1135).");
}
}
if(i == 2)
{
if(flag)
{
if(m_denyPhysicalPath)
{
throw new IllegalArgumentException("Physical path is denied (1125).");
}
else
{
return s;
}
}
if(isVirtual(s1))
{
throw new IllegalArgumentException("The path is not a physical path.");
}
else
{
throw new IllegalArgumentException("This path does not exist (1135).");
}
}
else
{
return null;
}
}
public void uploadInFile(String s) throws IOException,SmartUploadException
{
//boolean flag = false;
int i = 0;
int j = 0;
if(s == null)
{
throw new IllegalArgumentException("There is no specified destination file (1025).");
}
if(s.length() == 0)
{
throw new IllegalArgumentException("There is no specified destination file (1025).");
}
if(!isVirtual(s) && m_denyPhysicalPath)
{
throw new SecurityException("Physical path is denied (1035).");
}
i = m_request.getContentLength();
m_binArray = new byte[i];
int k;
for(;j < i;j += k)
{
try
{
k = m_request.getInputStream().read(m_binArray,j,i - j);
}
catch(Exception exception)
{
throw new SmartUploadException("Unable to upload.");
}
}
if(isVirtual(s))
{
s = m_application.getRealPath(s);
}
try
{
java.io.File file = new java.io.File(s);
FileOutputStream fileoutputstream = new FileOutputStream(file);
fileoutputstream.write(m_binArray);
fileoutputstream.close();
}
catch(Exception exception1)
{
throw new SmartUploadException("The Form cannot be saved in the specified file (1030).");
}
}
private boolean isVirtual(String s)
{
if(m_application.getRealPath(s) != null)
{
java.io.File file = new java.io.File(m_application.getRealPath(s));
return file.exists();
}
else
{
return false;
}
}
}
下面是上传的应用：
首先是一个请求页面：
upload.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>文件上传</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
<p> </p>
<p align="center">上传资源</p>
<FORM METHOD="POST" ACTION="do_upload.jsp"
ENCTYPE="multipart/form-data">
<table width="75%" border="1" align="center">
<tr>
<td><div align="center">1、
<input type="FILE" name="FILE1" size="30">
</div></td>
</tr>
<td><div align="center">
<input type="submit" name="Submit" value="上传">
</div></td>
</tr>
</table>
</FORM>
</body>
</html>
然后是处理页面：do_upload.jsp
<%@ page contentType="text/html; charset=gb2312" language="java"
import="java.util.*,com.drp.upload.*" errorPage="" %>//注意包名
<html>
<head>
<title>文件上传处理页面</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
<%
// 新建一个SmartUpload对象
SmartUpload su = new SmartUpload();
// 上传初始化
su.initialize(pageContext);
// 设定上传限制
// 1.限制每个上传文件的最大长度。
// su.setMaxFileSize(10000);
// 2.限制总上传数据的长度。
// su.setTotalMaxFileSize(20000);
// 3.设定允许上传的文件（通过扩展名限制）,仅允许doc,txt文件。
// su.setAllowedFilesList("doc,txt");
// 4.设定禁止上传的文件（通过扩展名限制）,禁止上传带有exe,bat,
//jsp,htm,html扩展名的文件和没有扩展名的文件。
// su.setDeniedFilesList("exe,bat,jsp,htm,html");
// 上传文件
su.upload();
// 将上传文件全部保存到指定目录
int count = su.save("/upload");
out.println(count+"个文件上传成功！<br>");
// 逐一提取上传文件信息，同时可保存文件。
for (int i=0;i<su.getFiles().getCount();i++)
{
SmartFile file = su.getFiles().getFile(i);
// 若文件不存在则继续
if (file.isMissing()) continue;
// 显示当前文件信息
out.println("<TABLE BORDER=1>");
out.println("<TR><TD>表单项名（FieldName）</TD><TD>"
+ file.getFieldName() + "</TD></TR>");
out.println("<TR><TD>文件长度（Size）</TD><TD>" +
file.getSize() + "</TD></TR>");
out.println("<TR><TD>文件名（FileName）</TD><TD>"
+ file.getFileName() + "</TD></TR>");
out.println("<TR><TD>文件扩展名（FileExt）</TD><TD>"
+ file.getFileExt() + "</TD></TR>");
out.println("<TR><TD>文件全名（FilePathName）</TD><TD>"
+ file.getFilePathName() + "</TD></TR>");
out.println("</TABLE><BR>");
// 将文件另存
// file.saveAs("/upload/" + myFile.getFileName());
// 另存到以WEB应用程序的根目录为文件根目录的目录下
// file.saveAs("/upload/" + myFile.getFileName(),
//su.SAVE_VIRTUAL);
// 另存到操作系统的根目录为文件根目录的目录下
// file.saveAs("c:\\temp\\" + myFile.getFileName(),
//su.SAVE_PHYSICAL);
}
%>
</body>
</html>
下载：
请求页面：download.html
<html>
<head>
<title>下载</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
<form action="do_download.jsp" method="post" name="form1" >
<table width="400" border="1" align="center">
<tr>
<td><div align="center">文件下载</div></td>
</tr>
<tr>
<td><div align="center">选择文件：
<input name="file" type="file" size="25">
</div></td>
</tr>
<tr>
<td><div align="center">
<input type="submit" name="Submit" value="提交">
<input type="reset" name="Submit" value="重置">
</div></td>
</tr>
</table>
</form>
</body>
</html>
处理页面：do_download.jsp
<%@ page language="java" contentType="text/html; charset=gbk" import="java.util.*,com.drp.upload.*"
pageEncoding="gbk"%>
<% request.setCharacterEncoding("gbk"); %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<meta http-equiv="Content-Type" content="text/html; charset=gbk">
<title>Insert title here</title>
<%
response.setCharacterEncoding("gbk");
String finame = request.getParameter("file");
// 新建一个SmartUpload对象
SmartUpload su = new SmartUpload();
// 初始化
su.initialize(pageContext);
// 设定contentDisposition为null以禁止浏览器自动打开文件，
//保证点击链接后是下载文件。若不设定，则下载的文件扩展名为
//doc时，浏览器将自动用word打开它。扩展名为pdf时，
//浏览器将用acrobat打开。
su.setContentDisposition(null);
// 下载文件
su.downloadFile(finame);
%>