package com.project.ajaxs;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.util.Calendar;
import java.util.Date;
public class BakMysql {
//main的方法，主要是我用于测试的，是想着取得CLASS的路径，然后备份的文件写在服务器的类路径下
public static void main(String[] args) {
BakMysql bk = new BakMysql();
bk.backup();
// bk.load();
}
//backup方法是备份数据库到服务器地址
public void backup() {
Calendar now = Calendar.getInstance();
String name = now.getTime()+""+(now.getTime().getMonth()+1)+""+now.getTime().getDate();
String filename = name.substring(24)+" "+name.substring(11,13)+""+name.substring(14,16)+""+name.substring(17,19);
try {
String filePath ="e:/project"+filename+".sql";
Runtime rt = Runtime.getRuntime();
// 调用 mysql 的 cmd:
Process child = rt.exec("C:/Program Files/MySQL/MySQL Server 5.0/bin/mysqldump.exe -uroot -p8095longchun project");// 设置导出编码为utf8。这里必须是utf8
//注意这一句，是指运行mysqldump命令，后面跟的是登录名和登录的密码，接着后面的是指备份的数据库的名字，到此结束，以此生成一个执行的进程，取得此进程的输出流到我们要备份的文件
// 把进程执行中的控制台输出信息写入.sql文件，即生成了备份文件。注：如果不对控制台信息进行读出，则会导致进程堵塞无法运行
InputStream in = child.getInputStream();// 控制台的输出信息作为输入流
InputStreamReader xx = new InputStreamReader(in, "utf-8");// 设置输出流编码为utf8。这里必须是utf8，否则从流中读入的是乱码
String inStr;
StringBuffer sb = new StringBuffer("");
String outStr;
// 组合控制台输出信息字符串
BufferedReader br = new BufferedReader(xx);
while ((inStr = br.readLine()) != null) {
sb.append(inStr + "\r\n");
}
outStr = sb.toString();//备份出来的内容是一个字条串
// 要用来做导入用的sql目标文件：
FileOutputStream fout = new FileOutputStream(filePath);
OutputStreamWriter writer = new OutputStreamWriter(fout, "utf8");
writer.write(outStr);//写文件
// 注：这里如果用缓冲方式写入文件的话，会导致中文乱码，用flush()方法则可以避免
writer.flush();
// 别忘记关闭输入输出流
in.close();
xx.close();
br.close();
writer.close();
fout.close();
} catch (Exception e) {
e.printStackTrace();
}
}
//数据库的导入
public void load() {
try {
String fPath = "e:/aa.sql";
Runtime rt = Runtime.getRuntime();
Process child = rt.exec("C:/Program Files/MySQL/MySQL Server 5.0/bin/mysqladmin.exe -uroot -p8095longchun create project");
Process child1 =rt.exec("C:/Program Files/MySQL/MySQL Server 5.0/bin/mysql.exe -uroot -p8095longchun project");
OutputStream out = child1.getOutputStream();//控制台的输入信息作为输出流
String inStr;
StringBuffer sb = new StringBuffer("");
String outStr;
BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(fPath), "utf-8"));
while ((inStr = br.readLine()) != null) {
sb.append(inStr + "\r\n");
}
outStr = sb.toString();
OutputStreamWriter writer = new OutputStreamWriter(out, "utf8");
writer.write(outStr);
// 注：这里如果用缓冲方式写入文件的话，会导致中文乱码，用flush()方法则可以避免
writer.flush();
out.close();
br.close();
writer.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}