mysql在centos下自动备份可使用脚本来实现，但是密码必须写在脚本中，若是直接在java定时任务代码中实现备份，百度出来的方案多数不太靠谱，踏过无数的坑后，这里共享一个实际使用中的代码。

public static void backup(String DB_USER, String DB_PWD, String DB_NAME, String BACKUP_DIR) {

String savePath = new File(BACKUP_DIR, DB_NAME + "_" + df.format(new Date()) + ".sql").getAbsolutePath();

String sql = "/usr/bin/mysqldump -u" + DB_USER + " -p" + DB_PWD + " " + DB_NAME + " >" + savePath;

String cmd[] = {"/usr/bin/sh", "-c", sql};

Process process;

try {

process = Runtime.getRuntime().exec(cmd);

int processComplete = process.waitFor();

if (processComplete == 0) {

logger.info("备份成功: " + savePath);

} else {

logger.error("备份失败: " + savePath);

}

} catch (InterruptedException e) {

logger.error("备份失败: " + savePath + "\r\n" + e.getMessage());

e.printStackTrace();

} catch (IOException e) {

logger.error("备份失败: " + savePath + "\r\n" + e.getMessage());

e.printStackTrace();

}

}