java - Jersey 415 Unsupported Media Type -

i have been trying since hours correct http error 415 unsupported media type still showing media unsupported page. adding headers application/json in postman.

here java code

package lostlove;  import javax.ws.rs.consumes; import javax.ws.rs.get;   import javax.ws.rs.post; import javax.ws.rs.path;   import javax.ws.rs.pathparam;   import javax.ws.rs.produces; import javax.ws.rs.core.mediatype; import javax.ws.rs.core.response;   import org.json.jsonobject;   @path("/story")  public class story {        @post       @consumes({"application/json"})       @produces(mediatype.application_json)     //  @consumes(mediatype.application_json)     //  @path("/story")        public jsonobject sayjsontexthello(jsonobject inputjsonobj) throws exception {          string input = (string) inputjsonobj.get("input");         string output = "the input sent :" + input;         jsonobject outputjsonobj = new jsonobject();         outputjsonobj.put("output", output);          return outputjsonobj;       }        @get         @produces(mediatype.text_plain)          public string sayplaintexthello() {           return "hello";       }  } 

here web.xml file

<?xml version="1.0" encoding="utf-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemalocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="webapp_id" version="3.0">   <display-name>lostlove</display-name>   <welcome-file-list>     <welcome-file>index.html</welcome-file>     <welcome-file>index.htm</welcome-file>     <welcome-file>index.jsp</welcome-file>     <welcome-file>default.html</welcome-file>     <welcome-file>default.htm</welcome-file>     <welcome-file>default.jsp</welcome-file>   </welcome-file-list>  <servlet>       <servlet-name>jersey rest service</servlet-name>       <servlet-class>org.glassfish.jersey.servlet.servletcontainer</servlet-class>       <init-param>           <param-name>jersey.config.server.provider.packages</param-name>           <param-value>lostlove</param-value>       </init-param>       <load-on-startup>1</load-on-startup>     </servlet>     <servlet-mapping>       <servlet-name>jersey rest service</servlet-name>       <url-pattern>/rest/*</url-pattern>     </servlet-mapping> </web-app> 

how our objects serialized , deserialized , response stream , request stream, through messagebodywriters , messagebodyreaders.

what happens search done registry of providers, 1 can handle jsonobject , media type application/json. if 1 can't found, jersey can't handle request , send out 415 unsupported media type. should exception logged on server side. not sure if gotten chance view log yet.

jersey doesn't have standard reader/writer org.json objects. have search web implementation or write 1 yourself, register it. can read more how implement here.

alternatively, accept string , return string. construct jsonobject string parameter, , call jsonobject.tostring() when returning.

my suggestion instead use data binding framework jackson, can handle serializing , deserializing , out model objects (simple pojos). instance can have class like

public class model {     private string input;     public string getinput() { return input; }     public void setinput(string input) { this.input = input; } }  

you have model method parameter

public returntype sayjsontexthello(model model) 

same returntype. create pojo type wan return. json properties based on javabean property names (getters/setters following naming convention shown above).

to support, can add maven dependency:

<dependency>     <groupid>org.glassfish.jersey.media</groupid>     <artifactid>jersey-media-json-jackson</artifactid>     <version>2.17</version>  <!-- make sure jersey version                                    matches 1 using --> </dependency> 

or if not using maven, can see this post, jars can download independently.

some resources:

• jersey json support
• jackson documentation