java mysql数据库备份还原

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;

public class TestMysql {

public static void main(String[] args) {

System.out.println("开始备份...");

backup();

System.out.println("备份成功...");

System.out.println("开始还原...");

load1();

System.out.println("还原成功...");

}

public static void backup() {

try {

Runtime rt = Runtime.getRuntime();

// 调用 调用mysql的安装目录的命令

Process child = rt

.exec("E://xampp//mysql//bin//mysqldump.exe -h localhost -uroot -p ultrax");

// 设置导出编码为utf-8。这里必须是utf-8

// 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utf-8。这里必须是utf-8，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();

// 要用来做导入用的sql目标文件：

FileOutputStream fout = new FileOutputStream(

"c:/test.sql");

OutputStreamWriter writer = new OutputStreamWriter(fout, "utf-8");

writer.write(outStr);

writer.flush();

in.close();

xx.close();

br.close();

writer.close();

fout.close();

System.out.println("");

} catch (Exception e) {

e.printStackTrace();

}

}

public static void load() {

try {

String fPath = "c:/test.sql";

Runtime rt = Runtime.getRuntime();

// 调用 mysql 安装目录的命令

Process child = rt.exec("E://xampp//mysql//bin//mysql -u root -p cdcol");

OutputStream out = child.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();

System.out.println(outStr);

OutputStreamWriter writer = new OutputStreamWriter(out, "utf-8");

System.out.println("7777777777777777777777777777777777777");

writer.write(outStr);

System.out.println("888888888888888888888888888888888888888");

writer.flush();

out.close();

br.close();

writer.close();

System.out.println("");

} catch (Exception e) {

e.printStackTrace();

}

}

public static void load1() {

try {

String fPath = "c:/test.sql";

Runtime rt = Runtime.getRuntime();

// 调用 mysql 的 cmd:

Process child = rt.exec("E://xampp//mysql//bin//mysql.exe -uroot -p cdcol ");

OutputStream out = child.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), "utf8"));

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();

// 别忘记关闭输入输出流

out.close();

br.close();

writer.close();

System.out.println("");

} catch (Exception e) {

e.printStackTrace();

}

}

}