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();
}