java mysql 备份数据库

import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimerTask;


public class Backup  extends TimerTask{
   private String user_name;
   private String user_psw;
   private String db_name;
   private String host_ip;
   private String user_charset;
   private String backup_path;
   private String stmt;
   
   static    SimpleDateFormat sdf =new SimpleDateFormat("yyyyMMddHHmmss");//完整的时间 
   
   public boolean BackupMysql(String user_name,String user_psw,String db_name,String host_ip,String user_charset,String backup_path){
       this.user_name=user_name;
       this.user_psw=user_psw;
       this.db_name=db_name;
       
       if(host_ip==null||host_ip.equals(""))
           this.host_ip="localhost";
       else
           this.host_ip=host_ip;
       
       if(user_charset==null||user_charset.equals(""))
           this.user_charset=" "; 
       else
           this.user_charset=" --default-character-set="+user_charset;
       this.backup_path=backup_path;
       
       this.stmt="C:\\Program Files\\MySQL\\MySQL Server 5.5\\bin\\mysqldump "+this.db_name+" -h "+this.host_ip+" -u"+this.user_name+" -p"+this.user_psw +this.user_charset+" --result-file="+this.backup_path;
       boolean run_result=false;
       try{
        System.out.println("备份语句="+this.stmt);
           Runtime.getRuntime().exec(this.stmt);
           run_result=true;
           System.out.println("------备份成功!-----");
       }catch(Exception e){
           e.printStackTrace();
       }finally{
           return run_result;
       }
   }


@Override
public void run() {
  try{
   System.out.println("数据库备份  ---  定时执行，开始时间为： " + new Date());
     String path ="c:\\DataBaseBak"; //设置一个默认文件夹路径
   File uploadFilePath = new File(path);
   // 如果该目录不存在,则创建之
   if(uploadFilePath.exists() == false) {
   uploadFilePath.mkdirs();
   System.out.println("路径不存在,但是已经成功创建了" + path);
   }else{
   System.out.println("文件路径存在" + path);
   }
   String time=sdf.format(new Date()); 
   System.out.println("---"+time);
       BackupMysql("root","sasa","jforum","10.5.1.103","utf8",path+"\\jforum"+time+".sql");
       System.out.println(" 数据库备份 ---  定时执行，结束时间为： " + new Date());
       
      }catch (Exception e) {
      }
}
}