Working on an existing Confluence plugin

Get the plugin source code

Many plugin authors have been generous in sharing their plugin source code to allow other users to modify and contribute to thier plugins. Some have chosen to use the Atlassian Developer Network Subversion Repository​ to maintain their source code.

You can generally find the source code location of a plugin by looking at table at the top of the plugin homepage (like this one. Most will list a source-code location, either a download or a Subversion URL.

Subversion

If the plugin source code is stored in Subversion, you need to check out the source code using your Subversion client. If you're using the commandline client, you'd type:

svn co http://svn.atlassian.com/svn/public/contrib/confluence/sql-plugin/trunk/ sql-plugin

This should download all of the plugin's current source code into a directory called 'sql-plugin.'

Please note: If you want to check code back in, you will need to be an authorised user and use HTTPS instead of HTTP. But if you just want to check-out code, then you can just use HTTP. 

ダウンロード

If the plugin author has attached the source code to the plugin homepage, just download the zip file and expand it.

Once you have the plugin source code, you're ready to move to the next step.