Jersey restful webservices in java application tested with Postman plugin sending complex Objects

I have created one java restful ws with jersey 1.8 library, it is one post operation of a Pojo called Loc and consumes JSON format. Here is the webservice: ``` import javax.ws.rs.Consumes; import javax.ws.rs.POST; import javax.ws.rs.Path; import javax.ws.rs.core.MediaType; import javax.ws.rs.core.Response; import org.hibernate.Session; import org.hibernate.Transaction; import persistence.HibernateUtil; import entities.Loc; @Path("EnvironmentService") public class Environment { @POST @Path("/post/location") @Consumes(MediaType.APPLICATION_JSON) public Response createLocation(Loc location) { System.out.println("ENTROU NO LOCATION"); Session session = HibernateUtil.openNewSession(); Transaction tx = session.beginTransaction(); session.save(location); tx.commit(); session.close(); String result = "Location saved"; return Response.status(201).entity(result).build(); } ``` I want to send the webservice a Loc object: ``` /** * Loc is a hibernate enitity class which represents a raw data table for location entries.*/ @Entity @XmlRootElement public class Loc implements Serializable { private static final long serialVersionUID = 1184003645439013748L; @Id @GeneratedValue(strategy = GenerationType.TABLE) private long id; private double latitude; private double longitude; private long time; private double accuracy; private String provider; @Column(name = "yProcessed", nullable = false, columnDefinition = "int default '0'") private int yProcessed = 0; @Column(name = "zClass", nullable = false, columnDefinition = "double default 0.0") private double zClass = 0d; public long getId() { return id; } public void setId(long id) { this.id = id; } public double getLatitude() { return this.latitude; } public void setLatitude(double latitude) { this.latitude = latitude; } public double getLongitude() { return this.longitude; } public void setLongitude(double longitude) { this.longitude = longitude; } public long getTime() { return this.time; } public void setTime(long time) { this.time = time; } @Override public String toString() { return "latitude: " + latitude + " longitude: " + longitude + "time: " + time; } public double getAccuracy() { return accuracy; } public void setAccuracy(double accuracy) { this.accuracy = accuracy; } public int getyProcessed() { return yProcessed; } public void setyProcessed(int yProcessed) { this.yProcessed = yProcessed; } public double getzClass() { return zClass; } public void setzClass(double zClass) { this.zClass = zClass; } public String getProvider() { return provider; } public void setProvider(String provider) { this.provider = provider; } } ``` This is my web.xml file for jersey configuration the jar i am using is 1.8: ``` <?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"> <display-name>RememberMeServer</display-name> <servlet> <servlet-name>Jersey REST Service</servlet-name> <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class> <init-param> <param-name>com.sun.jersey.config.property.packages</param-name> <param-value>webservices</param-value> </init-param> <init-param> <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name> <param-value>true</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> ``` And i am testing this webservice with the postman plugin in chrome. I give him the following url `http://localhost:8080/RememberMeServer/rest/EnvironmentService/post/location` which is correct. I pass him the following header: ``` Content-Type application/json ``` and select `raw` and `JSON` type format and send the following JSON code which was gathered using GSON from a Loc object: ``` {"provider":"network","latitude":39.1237894,"longitude":-9.2501239,"accuracy":34.5,"time":1400957412206} ``` In the Postman plugin i get that `415: UnsupportedMediaType` and in eclipse i get this jersey error: ``` Mai 25, 2014 12:49:42 PM com.sun.jersey.spi.container.ContainerRequest getEntity SEVERE: A message body reader for Java class entities.Loc, and Java type class entities.Loc, and MIME media type application/json was not found. The registered message body readers compatible with the MIME media type are: application/json -> com.sun.jersey.json.impl.provider.entity.JSONJAXBElementProvider$App com.sun.jersey.json.impl.provider.entity.JSONRootElementProvider$App com.sun.jersey.json.impl.provider.entity.JSONListElementProvider$App */* -> com.sun.jersey.core.impl.provider.entity.FormProvider com.sun.jersey.core.impl.provider.entity.MimeMultipartProvider com.sun.jersey.core.impl.provider.entity.StringProvider com.sun.jersey.core.impl.provider.entity.ByteArrayProvider com.sun.jersey.core.impl.provider.entity.FileProvider com.sun.jersey.core.impl.provider.entity.InputStreamProvider com.sun.jersey.core.impl.provider.entity.DataSourceProvider com.sun.jersey.core.impl.provider.entity.XMLJAXBElementProvider$General com.sun.jersey.core.impl.provider.entity.ReaderProvider com.sun.jersey.core.impl.provider.entity.DocumentProvider com.sun.jersey.core.impl.provider.entity.SourceProvider$StreamSourceReader com.sun.jersey.core.impl.provider.entity.SourceProvider$SAXSourceReader com.sun.jersey.core.impl.provider.entity.SourceProvider$DOMSourceReader com.sun.jersey.json.impl.provider.entity.JSONJAXBElementProvider$General com.sun.jersey.core.impl.provider.entity.XMLRootElementProvider$General com.sun.jersey.core.impl.provider.entity.XMLListElementProvider$General com.sun.jersey.core.impl.provider.entity.XMLRootObjectProvider$General com.sun.jersey.core.impl.provider.entity.EntityHolderReader com.sun.jersey.json.impl.provider.entity.JSONRootElementProvider$General com.sun.jersey.json.impl.provider.entity.JSONListElementProvider$General ``` Which is weird from what i understand the entities.Loc should be in here somewhere, but it is not. Some anotations in class Loc are for Hibernate Framework and dont concern the webservice. i think they dont interfere. i can't figure out how to pass this problem i want to test this webservice first and just after that i go to the client. Does anyone knows how to solve this problem? EDIT: here is the request preview in postman: ``` POST /RememberMeServer/rest/EnvironmentService/post/location HTTP/1.1 Host: localhost:8080 Content-Type: application/json Cache-Control: no-cache {"provider":"network","latitude":"39.1237894","longitude":"-9.2501239","accuracy":"34.5","time":"1400957412206"} ``` EDIT2 When i changed the type to text/plain and the parameter to a string it worked i think the problem is the mapping of the json string to Loc object any help? EDIT3: Now i changed the type to string in the post webservice and he receives the json pretty good but how can i do it with a Loc object instead of a string? EDIT4 By adding Genson has a user sugestion actually changed the error to internal server error here is the stacktrace: ``` Mai 28, 2014 2:12:26 PM com.sun.jersey.spi.container.ContainerResponse logException SEVERE: Mapped exception to response: 500 (Internal Server Error) javax.ws.rs.WebApplicationException: com.owlike.genson.JsonBindingException: Could not deserialize to type class java.lang.String at com.owlike.genson.ext.jaxrs.GensonJsonConverter.readFrom(GensonJsonConverter.java:127) at com.sun.jersey.spi.container.ContainerRequest.getEntity(ContainerRequest.java:490) at com.sun.jersey.server.impl.model.method.dispatch.EntityParamDispatchProvider$EntityInjectable.getValue(EntityParamDispatchProvider.java:123) at com.sun.jersey.server.impl.inject.InjectableValuesProvider.getInjectableValues(InjectableValuesProvider.java:86) at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$EntityParamInInvoker.getParams(AbstractResourceMethodDispatchProvider.java:153) at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:203) at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75) at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302) at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108) at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84) at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1542) at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1473) at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1419) at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1409) at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:409) at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:540) at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:715) at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) Caused by: com.owlike.genson.JsonBindingException: Could not deserialize to type class java.lang.String at com.owlike.genson.Genson.deserialize(Genson.java:442) at com.owlike.genson.ext.jaxrs.GensonJsonConverter.readFrom(GensonJsonConverter.java:125) ... 38 more Caused by: com.owlike.genson.stream.JsonStreamException: Readen value can not be converted to String at com.owlike.genson.stream.JsonReader.valueAsString(JsonReader.java:193) at com.owlike.genson.convert.DefaultConverters$StringConverter.deserialize(DefaultConverters.java:282) at com.owlike.genson.convert.DefaultConverters$StringConverter.deserialize(DefaultConverters.java:269) at com.owlike.genson.convert.NullConverter$NullConverterWrapper.deserialize(NullConverter.java:57) at com.owlike.genson.Genson.deserialize(Genson.java:440) ... 39 more ```