java调用mysql服务做备份与恢复

首先添加mysql的bin到环境变量，这样可以简写部分命令，并且做到不依赖系统mysql的具体安装路径。

重启计算机可以让添加的环境变量在java代码中调用时生效。（cmd中生效但java中调用没有生效，这是我遇到的情况）

java调用mysql备份命令用到：1，隐形调用cmd；2，调用第三方可执行程序；

cmd参数的说明：（详细参考地址：http://blog.csdn.net/xys_777/article/details/6164206）

cmd /c dir 是执行完dir命令后关闭命令窗口。 

cmd /k dir 是执行完dir命令后不关闭命令窗口。 

cmd /c start dir 会打开一个新窗口后执行dir指令，原窗口会关闭。 

cmd /k start dir 会打开一个新窗口后执行dir指令，原窗口不会关闭。

备份代码：

        String path = request.getSession().getServletContext().getRealPath("/");
        String bakfile = "SQLBAK\bak.sql";
        String cmd = "mysqldump -u root -h 127.0.0.1 -p123456 -P 3307 --default-character-set=UTF8 --add-drop-database -B ipms2 -r " +path+bakfile;
        try {
            Process runtimeProcess = Runtime.getRuntime().exec(new String[] { "cmd.exe", "/c", cmd});
            int processComplete = runtimeProcess.waitFor();
            if (processComplete == 0)
            {
                System.out.println("DatabaseManager.restore: Restore Successfull");
                result=true;
            }
            else 
            {
                System.out.println("DatabaseManager.restore: Restore Failure!");
                result=false;
            }
        } catch (Exception e1) {
           e1.printStackTrace();
        } 

恢复代码：

        String path = request.getSession().getServletContext().getRealPath("/");
        String bakfile = "SQLBAK\bak.sql";
        String cmd = "mysql -u root -h 127.0.0.1 -p123456 -P 3307 --default-character-set=UTF8 < " +path+bakfile;
        System.out.println(cmd);
        boolean result=true;
        try {
            Process runtimeProcess = Runtime.getRuntime().exec(
                    new String[] { "cmd.exe", "/c", cmd });
            int processComplete = runtimeProcess.waitFor();
            if (processComplete == 0) {
                System.out
                        .println("DatabaseManager.restore: Restore Successfull");
                result = true;
            } else {
                System.out.println("DatabaseManager.restore: Restore Failure!");
                result = false;
            }
        } catch (Exception e1) {
            e1.printStackTrace();
        }