我如何从mysql数据库中备份和还原日期 [英] how can i backup and restore date from mysql data base

问题描述

我想知道如何从mysql数据库创建备份并还原它. 我想在我的Java应用程序中使用它.

i want to know how can i create backup from mysql database and restore it. i want to use it in my java application.

mysql> mysql -u root -p 123  -h hostname club <dumpfile.sql;

但是它有这个错误:

ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'mysql -u root -p mehdi  -h hostname club < dumpfile.sql' at line 1   

推荐答案

import java.io.IOException;  
/**  
*  
* @author [e-mail]  
*/  

public class DatabaseManager {  

public static boolean backup(String mysqldumpPath, String backupPath) {
    boolean status = false;
    String username = "name";
    String password = "pword";
    String database = "database_name";


    String command = "/" + mysqldumpPath + "/mysqldump -u " + username + " -p" + password + " " + database + " -r " + backupPath;
    try {
        Process runtimeProcess = Runtime.getRuntime().exec(command);
        int processComplete = runtimeProcess.waitFor();
        if (processComplete == 0) {
            System.out.println("DatabaseManager.backup: Backup Successfull");
            status = true;
        } else {
            System.out.println("DatabaseManager.backup: Backup Failure!");
        }
    } catch (IOException ioe) {
        System.out.println("Exception IO");
        ioe.printStackTrace();
    } catch (Exception e) {
        System.out.println("Exception");
        e.printStackTrace();
    }
    return status;
}
public static boolean restore(String filePath){
    boolean status = false;
    String username = "name";
    String password = "pword";
    String[] command = new String[]{"mysql", "database_name", "-u" + username, "-p" + password, "-e", " source "+filePath };

    try {
        Process runtimeProcess = Runtime.getRuntime().exec(command);
        int processComplete = runtimeProcess.waitFor();
        if (processComplete == 0) {
            System.out.println("DatabaseManager.restore: Restore Successfull");
            status = true;
        } else {
            System.out.println("DatabaseManager.restore: Restore Failure!");
        }
    } catch (IOException ioe) {
        System.out.println("Exception IO");
        ioe.printStackTrace();
    } catch (Exception e) {
        System.out.println("Exception");
        e.printStackTrace();
    }
    return status;
}

//for testing
public static void main(String args[]){
    String backupName = "D:/DatabaseBackup/backupHvs.sql";
    DatabaseManager.restore(backupName);
}

}

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