[英]MySql backup is not working
String[] executeCmd = new String[] { "mysql", "-u",DB_USER,"-p"+DB_PASSWORD,DB_NAME, " < ", "\""+FileName+"\"" };
Process runtimeProcess = Runtime.getRuntime().exec(executeCmd);
int processComplete = runtimeProcess.waitFor();
System.out.println("processComplete: " + processComplete);
這是我使用過的代碼。 調用“ waitFor()”方法時,程序掛起。
如何解決呢?
您需要在參數后添加空格,不要使用數組
String executeCmd = "mysqldump ", " -u ",DB_USER," -p " + DB_PASSWORD, + " " + DB_NAME, " < ", "\""+FileName+"\"" ;
更干凈的方法是使用String.Format()
String executeCmd = String.Format("mysqldump -u %s -p %s %s < \"%s\"", DB_USER, DB_PASSWORD, DB_NAME, FileName)
String[] command = new String[]{"mysql", Constants.DB_NAME, "-u" + Constants.DB_USER, "-p" + Constants.DB_PASSWORD, "-e", " source "+FileName };
try {
Process runtimeProcess = Runtime.getRuntime().exec(command);
int processComplete = runtimeProcess.waitFor();
if (processComplete == 0)
{
System.out.println("DatabaseManager.restore: Restore Successfull");
}
else
{
System.out.println("DatabaseManager.restore: Restore Failure!");
}
return true;
}
catch (final Exception ex)
{
Application.showErrorInConsole(ex);
NmsLogger.writeErrorLog("Database Restore failed ", ex.toString());
NmsLogger.writeDebugLog(ex);
return false;
}
上面的代碼對我來說很好:)
如果您沒有為XAMPP設置密碼,請不要使用-p
public class Testbackupmysql {
public boolean tbBackup(String dbName,String dbUserName, String path) {
String executeCmd = "C:\\xampp\\mysql\\bin\\mysqldump -u " + dbUserName + " --add-drop-database -B " + dbName + " -r " + path;
Process runtimeProcess;
try
{
System.out.println(executeCmd);//this out put works in mysql shell
runtimeProcess = Runtime.getRuntime().exec(executeCmd);
int processComplete = runtimeProcess.waitFor();
if (processComplete == 0)
{
System.out.println("Backup created successfully");
return true;
}
else
{
System.out.println("Could not create the backup");
}
} catch (Exception ex)
{
ex.printStackTrace();
}
return false;
}
public static void main(String[] args){
Testbackupmysql bb = new Testbackupmysql();
bb.tbBackup("your_database_name","your_db_username","D:\\123.sql");
}
}
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