backup mysql database java code

Question

I tried to run the following code which is to create a backup of my database but it shows some run time errors.

But, I tried to run the Syst

Answer 1

Please check whether your Global PATH environment variable has <Path to MySQL>\bin in it (Do a echo %PATH% and see). Effectively you should be able to type your System.out.println() content in a Plain DOS prompt and should be able to run it.

Even with that if it doesn't work try changing the code to execute like below

runtimeProcess = Runtime.getRuntime().exec(new String[] { "cmd.exe", "/c", executeCmd });

This should ideally fix the issue.

UPDATE:

If you don't have it in the PATH environment variable change the code to following

String executeCmd = "<Path to MySQL>/bin/mysqldump -u " + dbUserName + " -p" + dbPassword + " --add-drop-database -B " + dbName + " -r " + path;

Answer 2

runtimeProcess = Runtime.getRuntime().exec(new String[] { "cmd.exe", "/c", executeCmd });

i tried this one but it didn't work so i replaced it with

this runtimeProcess = Runtime.getRuntime().exec(executeCmd);

and it worked

Answer 3

I solved this problem by giving full path to mysqldump.exe

You can get SO environment variables by

Map<String, String> env = System.getenv();
final String LOCATION = env.get("MYSQLDUMP");

I setup the system variable like this :

• Variable Name : MYSQLDUMP
• Value : D:\xampp\mysql\bin\mysqldump.exe

Now just execute this code below,

String executeCmd = LOCATION+" -u " + DBUSER + " --add-drop-database -B " + DBNAME + " -r " + PATH + ""+FILENAME
Process runtimeProcess = = Runtime.getRuntime().exec(executeCmd);

Note : If you don't have configured password for mysql server just remove the -p PASSWORD attribute from the code. And don't forget to restart your computer after creating a new system variable.