Restful POST and GET (different result from web and Postman)

[Jack Mutansan]

@RequestMapping(value="/getStudent", method=RequestMethod.GET) 
@ResponseBody
public String getStudent(@RequestParam("classID") Integer classID) {
		return students.get(classID-1).toString();
}

Above is a simple method in a @RestController.  I found when I access this via a browser "http://localhost:8080/xxx/getStudent?classID=2"; it works but only works when RequestMethod is "GET".  if I change it to "Post" it doesn't work on browser

However, the interesting thing is, when I use Google Postman tool,  when I specify "GET", I don't get the list of names, but when I use "POST" I get the results (same results as I use "GET" on browser).

Does anybody know why it behaves differently ?
Thanks

[Claude Moore]

If you specify GET method with @Requestmapping, the Rest endpoint will respond only to GET requests. Are you really sure you are POSTing a request???
What happens using curl - for example ?

[Jack Mutansan]

Claude Moore wrote:If you specify GET method with @Requestmapping, the Rest endpoint will respond only to GET requests. Are you really sure you are POSTing a request???
What happens using curl - for example ?

Hi, I thought I was supposed to use "GET" since this is getting student name.  So it works fine when you use "GET" and view it from URL on a browser.  

What confused me was --- When I use Postman tool, when I specify "GET" I couldn't get results.  But when I specify "POST" it returns data.  I don't understand why.

[Himai Minh]

Hi, Jack,
Could you post your code on Github and let us run it ?
GET is to retrieve data.
POST is to add data.

If you want to add (post) data in Postman, you may need to add a request body.

But since your getStudent method is a GET method, using POST will run into an error.