spring - The specified HTTP method is not allowed for the requested resource -

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i using spring 4.1 , rest controller signature looks like:

@restcontroller @requestmapping("/api/device") public class apirestcontroller {     public responseentity<response> singleresponse() {         system.out.println("sdr get");         singledataresponse res = new singledataresponse();         res.setcmd("8028");         res.setdata("xyz");         res.setrfu("rfu");         res.setsid("99");         return new responseentity<response>(res, httpstatus.ok);     }      @requestmapping(value = "/single-res-post", method = requestmethod.post)     @responsestatus(httpstatus.created)     public responseentity<response> singleresponsepost(             @requestbody singledatarequest req, httpservletrequest request,             httpservletresponse response) {         system.out.println("sdr post");         singledataresponse res = new singledataresponse();         res.setcmd(req.getcmd());         res.setrfu(req.getrfu());         res.setsid(req.getsid());         res.setdata("0");         return new responseentity<response>(res, httpstatus.ok);     }  }

i have added below bean in webmvcconfig

@bean public requestmappinghandleradapter requestmappinghandleradapter() {     requestmappinghandleradapter adapter = new requestmappinghandleradapter();     adapter.setcachesecondsforsessionattributehandlers(0);     final mappingjackson2httpmessageconverter mappingjacksonhttpmessageconverter = new mappingjackson2httpmessageconverter();     list<httpmessageconverter<?>> httpmessageconverter = new arraylist<httpmessageconverter<?>>();     httpmessageconverter.add(mappingjacksonhttpmessageconverter);      string[] supportedhttpmethods = { "post", "get", "head" };      adapter.setmessageconverters(httpmessageconverter);     adapter.setsupportedmethods(supportedhttpmethods);      return adapter; }

i using httpclient , post access above rest api

i able acess request while sending post request getting response

<!doctype html> <html><head><title>apache tomcat/8.0.12 - error report</title></head> <body>    <h1>http status 405 - request method 'post' not supported</h1>    <p><b>message</b> <u>request method 'post' not supported</u></p>    <p><b>description</b> <u>the specified http method not allowed requested resource.</u></p> </body></html>

kindly suggest

the code used send post request

public static void verifyireowspost() throws exception {         string wms = "http://localhost:8080/test-rest/api/device/single-res-post";         map<string, string> headers = new hashmap<string, string>();         string json = "{\"sid\":\"99\",\"rfu\":\"rfu\",\"cmd\":\"8028\",\"data\":\"xyz\"}";         headers.put(httpheaders.content_type, "application/json");         headers.put("username", "admin");         headers.put("password", "admin");         string response = httputils.sendpost(wms, headers, json);         system.out.println("post response: " + response);     }


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