Return HTTP 204 on null with spring @RestController

Question

This returns 200 OK with Content-Length: 0

@RestController
public class RepoController {
    @RequestMapping(value = \"/document/{id}\", method = RequestMeth         


        

Answer 1

I solved this problem with a filter. It's global and simple.

package your.package.filter;

import org.springframework.http.HttpStatus;
import org.springframework.web.filter.OncePerRequestFilter;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

public class NoContentFilter extends OncePerRequestFilter {

    @Override
    protected void doFilterInternal(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, FilterChain filterChain) throws ServletException, IOException {
        filterChain.doFilter(httpServletRequest, httpServletResponse);
        if (httpServletResponse.getContentType() == null ||
                httpServletResponse.getContentType().equals("")) {
            httpServletResponse.setStatus(HttpStatus.NO_CONTENT.value());
        }
    }
}

and add the following in your web.xml

    restNoContentFilter
    your.package.filter.NoContentFilter



    restNoContentFilter
    /rest/*