JSP 实现 之 调用java方法实现MySQL数据库备份和恢复

时间：2023-12-18 23:47:26
package cn.qm.db;

import java.io.BufferedReader;

import java.io.DataInputStream;

import java.io.IOException;

import java.io.InputStreamReader;  

public class Command {

    /*

    public static void main(String[] args) throws IOException {

        Command com = new Command();

        com.backupDatebase("localhost","root","root", "JXC", "D:/jxc.sql");

    }  

    /**

     * 执行dos命令

     * @param cmd

     * @return

     */

    public String execCmd(String cmd) {

        StringBuffer sb = new StringBuffer("");

        StringBuffer str = new StringBuffer();

        str.append("cmd.exe /c \"").append(cmd).append("\"");

        System.out.println(str);        //打印执行的命令

        Process ls_proc;

        try {

            ls_proc = Runtime.getRuntime().exec(str.toString());

            BufferedReader in = new BufferedReader(

                                    new InputStreamReader(

                                        new DataInputStream(ls_proc.getInputStream())));

            String ss = "";

            while((ss = in.readLine()) != null) {

                sb.append(ss).append("\n");

            }

            in.close();

        } catch (IOException e) {

            e.printStackTrace();

        }   

        return sb.toString();

    }  

    /**

     * 执行mysql数据库备份

     * @param ip

     * @param username

     * @param password

     * @param datebaseName

     * @param filePath

     * @return

     */

    public boolean backupDatebase(String ip, String username, String password,String datebaseName, String filePath) {

        String strCommand = "mysqldump -h "+ip+" -u" + username + " -p" + password + " " + datebaseName + " > " + filePath;

        String result = execCmd(strCommand);

        System.out.println(result);

        return true;

    }  

    /**

     * 根据返回结果验证是否成功

     * @param result

     * @return

     */

    public boolean check(String result) {

        return true;

    }

}

在JSP页面只要调用这个JAVA类就可以。（文件名只能是.sql）

<%@ page language="java" import="java.util.*,cn.qm.db.*" pageEncoding="UTF-8"%>

<%

String path = request.getContextPath();

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

%>  

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

  <head>

    <base href="<%=basePath%>">  

    <title>数据库备份测试</title>  

    <meta http-equiv="pragma" content="no-cache">

    <meta http-equiv="cache-control" content="no-cache">

    <meta http-equiv="expires" content="0">

    <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>

<%

Command com = new Command();

String ip = "localhost";//ip地址

String username = "root";//MySQL数据库的用户名

String password = "root";//MySQL数据库的密码

String database = "JXC";//数据库名字

String url = "D:/jxc.sql";//备份的目的地址

boolean check = com.backupDatebase(ip,username,password,database,url);

if(check){

 %>

 数据库备份成功

 <%} %>

  </body>

</html>

下面是恢复数据的代码。

package cn.qm.db;

import java.io.*;

import java.lang.*;   

/*

* 还原MySql数据库

* */

public class Recover {

public boolean load(){

    String filepath = "d:\\jxc.sql"; // 备份的路径地址

      //新建数据库test   

      String stmt1 = "mysqladmin -u root -proot create jxctest";   

      String stmt2 = "mysql -u root -proot jxctest < " + filepath;

      String[] cmd = { "cmd", "/c", stmt2 };   

      try {

      Runtime.getRuntime().exec(stmt1);

      Runtime.getRuntime().exec(cmd);

      System.out.println("数据已从 " + filepath + " 导入到数据库中");

      } catch (IOException e) {

      e.printStackTrace();

      }

      return true;

}

}   
<%@ page language="java" import="java.util.*,cn.qm.db.*" pageEncoding="UTF-8"%>

<%

String path = request.getContextPath();

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

%>  

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

  <head>

    <base href="<%=basePath%>">  

    <title>数据恢复测试</title>  

    <meta http-equiv="pragma" content="no-cache">

    <meta http-equiv="cache-control" content="no-cache">

    <meta http-equiv="expires" content="0">

    <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>  

<%

Recover com = new Recover();

String url = "D:/jxc.sql";

boolean check = com.load();

if(check){

 %>

 数据库恢复成功

 <%} %>

  </body>

</html>

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