REST web service - sending post request with xml from JSP

Question

I have a JSP file in which I have an entity class - I want to add the user to the database. I have a REST web service with POST method that consumes application/xml. I guess, I have to parse the data to XML and invoke post method, but how to send this xml data to rest with this call ? I know only how to invoke GET methods, but how to call for example post or delete methods that needs some parameters? Thanks.

Answer 1

You have two challenges: generating XML (not parsing, parsing is converting from XML, not to) and POSTing it.

The first problem is rather simple. You can use various libraries, from jaxb, through dom to manual crafting of XML using StringBuilder (not advised).

You can send POST in plain Java, see: Java: how to use UrlConnection to post request with authorization? There are also special libraries, like httpclient.

BTW do not: call web services, access database directly, start threads, open files... in JSP. At least use servlets and leave JSP for representation.