How to update Jenkins config.xml from Java code?

Question

I am new to Jenkins Plugin development so pardon me if the question is silly. I am currently developing a Jenkins Plugin that provides a very small list of configuration options

Answer 1

After some research I have got to know how to update the config file through user defined form.

PFB Code

AbstractItem item= (AbstractItem) Jenkins.getInstance().getItemByFullName(itemName)
Source streamSource = new StreamSource(new StringReader(config))
item.updateByXml(streamSource);
item.save();

In the jelly the form has to called the method like this

<f:form method="post" name="config" action="configSubmit">

So the code to update has to be placed in the method as follows

public void doConfigSubmit(StaplerRequest req, StaplerResponse rsp) throws
IOException, ServletException, Descriptor.FormException

Answer 2

You can use the jenkins-client-api project to access Jenkins from java application. It is quite standard and definitely of great help when interacting from Java application to Jenkins. https://github.com/jenkinsci/java-client-api