java 实现mysql数据库备份

import java.io.BufferedReader;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import org.apache.log4j.Logger;

import org.springframework.context.annotation.Scope;

import org.springframework.stereotype.Controller;

import com.itenp.gen.common.Constants;

import com.itenp.gen.common.ParameterUtil;

import com.itenp.gen.service.i.BackUpServiceI;

import com.itenp.gen.system.PropertiesCache;

import com.itenp.gen.vo.BackUpVO;

import com.itenp.gen.vo.UserVO;

@SuppressWarnings("serial")

@Scope("prototype")

@Controller("backupAction")

public class BackUpAction extends BaseAction {

private static Logger log = Logger.getLogger(BackUpAction.class);

private String databaseDirectory = PropertiesCache.getInstance().getDatabaseDirectory(); //数据库bin路径

private String databaseName = PropertiesCache.getInstance().getDatabaseName();//数据库名

private String userName = PropertiesCache.getInstance().getUserName();

private String userPwd = PropertiesCache.getInstance().getUserPwd();

private String copyDbCmd = PropertiesCache.getInstance().getCopyDbCmd();//数据库备份命令

private String copyprocCmd = PropertiesCache.getInstance().getCopyprocCmd();//存储工程备份命令

private String copyedFilePath = PropertiesCache.getInstance().getCopyedFilePath(); //备份后的文件存放位置

private String restoreCmd = PropertiesCache.getInstance().getRestoreCmd();  //数据库还原命令

private String msg = "";

private String msg1 = "";

private BackUpServiceI service;

@Resource(name="backupService")

public void setBackupService(BackUpServiceI service){

this.service=service;

}

@SuppressWarnings("unchecked")

public String list() throws Exception

{

//System.out.println("copyedFilePath"+copyedFilePath);

HashMap map = new HashMap();

//得到符合条件的记录List

List<BackUpVO> list = (List)service.findList(map);

request.setAttribute("list", list);

log.debug("####"+PropertiesCache.getInstance().getTemplateDirectory());

// System.out.println(PropertiesCache.getInstance().getTemplateDirectory());

return "success";

}

@SuppressWarnings("unchecked")

public String backup() throws Exception

{

Runtime rt = Runtime.getRuntime();

// 调用 mysql 的 cmd:

/*System.out.println("数据库bin路径"+databaseDirectory);

System.out.println("数据库名"+databaseName);

System.out.println("用户名"+userName);

System.out.println("密码"+userPwd);

System.out.println("数据库备份命令"+copyDbCmd);

System.out.println("存储工程备份命令"+copyprocCmd);*/

String str = databaseDirectory+"/"+copyDbCmd+" --no-defaults "+"-u"+userName+" "+"-p"+userPwd+" "+copyprocCmd+" "+"--set-charset=utf-8"+" "+databaseName;

//str = "D:\SOFT\MySQL\MySQL Server 5.5\bin/mysqldump -uroot -proot -R --set-charset=utf-8 nlnk";

//System.out.println(str);

// Process child = rt.exec(databaseDirectory+"/"+copyDbCmd+" "+"-u"+userName+" "+"-p"+userPwd+" "+copyprocCmd+" "+"--set-charset=utf-8"+" "+databaseName);// 设置导出编码为utf8。这里必须是utf8

Process child = rt.exec(str);// 设置导出编码为utf8。这里必须是utf8

//调用mysql的cmd:备份某个表

// Process childtable = rt

// .exec("D:/db/mysql/mysql-5.0.45-win32/bin/mysqldump -uroot -pmysql  --set-charset=utf8 ibtts t_a_dbbak");// 设置导出编码为utf8。这里必须是utf8

//  Process childtable = rt

// .exec(databaseDirectory+"/"+copyDbCmd+" "+"-u"+userName+" "+"-p"+userPwd+" "+"--set-charset=utf8"+" "+databaseName+" "+"t_a_dbbak");// 设置导出编码为utf8。这里必须是utf8

// 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, "utf8");// 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);

// System.out.println("------------"+br.readLine());

while ((inStr = br.readLine()) != null) {

sb.append(inStr + "\r\n");

}

outStr = sb.toString();

//判断是否保存成功

if(outStr != null && !outStr.trim().equals("")){

msg="ok";

}

//System.out.println("-----"+outStr);

//创建文件名称

SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmss");

String today=format.format(new Date());

//String targetDirectory = scontext.getRealPath("/WEB-INF/DBbackup");

// System.out.println(targetDirectory);

// 要用来做导入用的sql目标文件：D:/ibtts.sql

FileOutputStream fout = new FileOutputStream(

copyedFilePath+"/"+today+"ibtts.sql" );

OutputStreamWriter writer = new OutputStreamWriter(fout, "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

in.close();

xx.close();

br.close();

writer.close();

fout.close();

// System.out.println("/* Output OK! */");

//数据添加到数据库

HashMap map = new HashMap();

map.put("db_nm", "ibtts");

map.put("bk_nm", today+"ibtts.sql");

map.put("bk_user",((UserVO)session.get(Constants.S_LOGIN_USER)).getUser_id());

service.create(map);

//  copytable();

return list();

}

/**

* 数据的恢复

*/

@SuppressWarnings("unchecked")

public String load() throws Exception

{  

copytable();

//得到页面所有参数

Map<String, String> map = ParameterUtil.getStringMap(request,session);

//String targetDirectory = scontext.getRealPath("/WEB-INF/DBbackup");

//获取id后进行查询

BackUpVO vo=(BackUpVO) service.findById(map);

String fPath=copyedFilePath+"/"+vo.getBk_nm();

System.out.println(fPath);

//map.put("Id", vo.getId());

// 调用 mysql 的 cmd:

//Process child = rt.exec("D:/db/mysql/mysql-5.0.45-win32/bin/mysql -uroot -pmysql ibtts");

Process child = rt.exec(databaseDirectory+"/"+restoreCmd+" "+"-u"+userName+" "+"-p"+userPwd+" "+databaseName);

//System.out.println(databaseDirectory+"/"+restoreCmd+" "+"-u"+userName+" "+"-p"+userPwd+" "+databaseName);

java.io.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();

//获取还原用户

map.put("restore_user", ((UserVO)session.get(Constants.S_LOGIN_USER)).getUser_id());

//service.modify(map);

restoretable(map);   //---------------

//System.out.println(map);

//System.out.println("恢复成功");

request.getSession().setAttribute("dbmap", map);

msg1 = "tiaozhuan";

return "success";

}

//对特定表的处理

public void copytable() throws Exception

{

Runtime rt = Runtime.getRuntime();

// 调用 mysql 的 cmd:

//调用mysql的cmd:备份某个表

//Process child = rt

// .exec("D:/db/mysql/mysql-5.0.45-win32/bin/mysqldump -uroot -pmysql  --set-charset=utf8 ibtts t_a_dbbak");// 设置导出编码为utf8。这里必须是utf8

Process child = rt.exec(databaseDirectory+"/"+copyDbCmd+" --no-defaults "+"-u"+userName+" "+"-p"+userPwd+" "+"--set-charset=utf8"+" "+databaseName+" "+"t_a_dbbak");// 设置导出编码为utf8。这里必须是utf8

// 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

// System.out.println(databaseDirectory+"/"+copyDbCmd+" --no-defaults "+"-u"+userName+" "+"-p"+userPwd+" "+"--set-charset=utf8"+" "+databaseName+" "+"t_a_dbbak");

InputStreamReader xx = new InputStreamReader(in, "utf8");// 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();

//String targetDirectory = scontext.getRealPath("/WEB-INF/DBbackup");

// 要用来做导入用的sql目标文件：D:/ibtts.sql

FileOutputStream fout = new FileOutputStream(

copyedFilePath+"/"+"ibtts_talbe.sql" );

OutputStreamWriter writer = new OutputStreamWriter(fout, "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

in.close();

xx.close();

br.close();

writer.close();

fout.close();

}

public void restoretable(Map map) throws Exception

{

String fPath=copyedFilePath+"/"+"ibtts_talbe.sql";

// 调用 mysql 的 cmd:

//Process child = rt.exec("D:/db/mysql/mysql-5.0.45-win32/bin/mysql -uroot -pmysql ibtts");

Process child = rt.exec(databaseDirectory+"/"+restoreCmd+" "+"-u"+userName+" "+"-p"+userPwd+" "+databaseName);

System.out.println(databaseDirectory+"/"+restoreCmd+" "+"-u"+userName+" "+"-p"+userPwd+" "+databaseName);

java.io.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(map);

/*int sign=0;

BackUpVO vo=null;

while(vo==null){

vo=(BackUpVO) service.findById(map);

if(vo!=null||sign==100){

break;

}

sign++;

}

service.modify(map);*/

}

@SuppressWarnings("unchecked")

public String upbak() throws Exception{

HashMap map = new HashMap();

map = (HashMap)request.getSession().getAttribute("dbmap");

int sign=0;

BackUpVO vo=null;

while(vo==null){

vo=(BackUpVO) service.findById(map);

if(vo!=null||sign==100){

break;

}

sign++;

}

service.modify(map);

return list();

}

public String getMsg() {

return msg;

}

public void setMsg(String msg) {

this.msg = msg;

}

public String getMsg1() {

return msg1;

}

public void setMsg1(String msg1) {

this.msg1 = msg1;

}

}