SÉVÈRE: MessageBodyWriter pas trouvé le type de support=application/json, type=classe com.jersey.jaxb.Todo, genericType=classe com.jersey.jaxb.Todo

Je suis en train de créer un web RESTful-service et j'ai créé un, mais je suis un

MessageBodyWriter pas trouvé le type de support=application/json erreur

Mon Todo classe:

package com.jersey.jaxb;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;
import org.pojomatic.Pojomatic;
import org.pojomatic.annotations.AutoProperty;
@XmlRootElement
@XmlType(name = "todo")
@XmlAccessorType(XmlAccessType.FIELD)
@AutoProperty
public class Todo {
@XmlElement(name = "summary")
private final String summary;
@XmlElement(name = "description")
private final String description;
public String getSummary() {
return summary;
}
public String getDescription() {
return description;
}
public Todo() {
this(new Builder());    
}
public Todo(Builder builder) {
this.summary = builder.summary;
this.description = builder.description;
}
@Override
public boolean equals(Object o) {
return Pojomatic.equals(this, o);
}
@Override
public int hashCode() {
return Pojomatic.hashCode(this);
}
@Override
public String toString() {
return Pojomatic.toString(this);
}
public static class Builder {
private String description;
private String summary;
public Builder summary(String summary) {
this.summary = summary;
return this;
}
public Builder description(String description) {
this.description = description;
return this;
}
public Todo build() {
return new Todo(this);
}
}
}

Et mes Ressources:-

package com.jersey.jaxb;
import javax.ws.rs.Path;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.Produces;
import javax.ws.rs.GET;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;
@Path("/todo")
public class TodoResource {
@GET
@Produces(MediaType.APPLICATION_JSON)
public Response getTodo(){
Todo todo = new Todo.Builder().description("My Todo Object").summary("Created").build();
return Response.status(Status.OK).entity(todo).build();
}
}

Mon web.xml:

<?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">
<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>
<display-name>MyFirstWebService</display-name>
<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>com.jersey.jaxb</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>  

Mes Bibliothèques:

aopalliance-repackaged-2.4.0-b10.jar
asm-debug-all-5.0.2.jar
hk2-api-2.4.0-b10.jar
hk2-locator-2.4.0-b10.jar
hk2-utils-2.4.0-b10.jar
jackson-jaxrs-json-provider-2.2.3.jar
javassist-3.18.1-GA.jar
javax.annotation-api-1.2.jar
javax.inject-2.4.0-b10.jar
javax.servlet-api-3.0.1.jar
javax.ws.rs-api-2.0.1.jar
jaxb-api-2.2.7.jar
jersey-client.jar
jersey-common.jar
jersey-container-servlet.jar
jersey-container-servlet-core.jar
jersey-guava-2.17.jar
jersey-media-jaxb.jar
jersey-server.jar
org.osgi.core-4.2.0.jar
osgi-resource-locator-1.0.1.jar
persistence-api-1.0.jar
validation-api-1.1.0.Final.jar

Quand je lance cette application sur serveur Tomcat et exécuter ce :
http://localhost:8080/MyFirstWebService/rest/todo

J'obtiens l'erreur:

SÉVÈRE: MessageBodyWriter pas trouvé le type de support=application/json,
type=classe com.jersey.jaxb.Todo, genericType=classe
com.jersey.jaxb.Todo.

InformationsquelleAutor Raj Hassani | 2015-03-19