JSP 实现之调用java方法实现MySQL数据库备份和恢复

Posted 2020-08-08 JokerJason

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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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