Java Spring MVC application accepts POST requests only with trailing slash

Question

I have a spring MVC application with following details

war file name is forms.war. url pattern in web.xml is"/"
Controller action's @RequestMapping is "/"
RequestMethod.GET actions work properly if localhost:8080/forms is hit
RequestMethod.POST actions not triggered if the post data is hit against localhost:8080/forms
The POST requests gives a 302 redirect
When I hit localhost:8080/forms/ the POST requests work properly

Any solution to make POST request work without trailing slash?

Here is the code I used to test the POST api:

public class HttpPostExample {
    public static void main(String[] args) {
        HttpClient httpClient = HttpClientBuilder.create().build();
        try {

            HttpPost request = new HttpPost("http://localhost:8080/forms");
            StringEntity params =new StringEntity("{\"form_url\":\"admin\",\"website\":\"US_WEBSITE\",\"email\":\"[email protected]\",\"cis_name\":\"testscrip1\"} ");
            request.addHeader("content-type", "application/x-www-form-urlencoded");
            request.setEntity(params);
            HttpResponse response = httpClient.execute(request);

            System.out.println("Printing the response code " + response.getStatusLine().getStatusCode());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Changing the url to /forms/ works for POST request but not /forms

probably the difference its because in the GET request you are not sending parameters, so doesnt mind you add or not the slash, but in the POST you will add some parameters, and you need to add a proper URL action to attach all parameters — cralfaro
– cralfaro, Commented Mar 13, 2017 at 12:27
Possible duplicate of How do I map Spring MVC controller to a uri with and without trailing slash? — john16384
– john16384, Commented Mar 13, 2017 at 12:32
You can control this behavior globally by using org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.setUseTrailingSlashMatch(boolean). Have you set this to false somewhere? — Ansgar Schulte
– Ansgar Schulte, Commented Mar 13, 2017 at 12:41
@cralfaro here is the controller code <code> \@Controller public class JSONController { \@RequestMapping(value="/",method = RequestMethod.GET) public \@ResponseBody String handleGET(HttpServletRequest request) { } \@RequestMapping(value="/",method = RequestMethod.POST) public \@ResponseBody String handlePOST(HttpServletRequest request) { } } </code> — Elavarasu Pandiyan
– Elavarasu Pandiyan, Commented Mar 13, 2017 at 12:42

john16384 · Accepted Answer · 2017-03-13 12:31:47Z

0

Change @RequestMapping to either no mapping (so don't put a value at all not even "/") or to "/*".

answered Mar 13, 2017 at 12:31

john16384

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2 Comments

Elavarasu Pandiyan Over a year ago

Tried both. Didn't work. Like not even having the value in RequestMapping and also the value "/*".

Elavarasu Pandiyan Over a year ago

The GET requests work fine as per the link you have shared. What am facing issue is with the POST request. It just gets a 302. But the POST request with /forms/ works fine.

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