CODEWITHSUNDEEP
javajsonweb-servicesmoxyjersey-2.0
Frederick Roth
Frederick Roth

Reputation: 2830

Jersey 2.0 equivalent to POJOMappingFeature

I have some experience using Jersey < 2.0. Now I am trying to build a war application to provide a JSON Webservice API.

I am now struggling for a considerable amount of time trying to configure Moxy and it seams to be way more complicated than what was adding

    <init-param>
        <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
        <param-value>true</param-value>
    </init-param>

to your web.xml back in Jersey < 2.0.

Is there some possibility to just say "please add json support"?

Currently I just get a lot of Internal Server Error errors without any log entries on the server and just think "I have to do something totally wrong, this can't be so hard"

Can anyone give me a hint?

Upvotes: 37

Views: 50283

Answers (6)

ibai
ibai

Reputation: 1318

If you want to define it in your web.xml file then:

JACKSON:

<init-param>
  <param-name>jersey.config.server.provider.classnames</param-name>
  <param-value>org.glassfish.jersey.jackson.JacksonFeature</param-value>
</init-param>

MOXY

<init-param>
  <param-name>jersey.config.server.provider.classnames</param-name>
  <param-value>org.glassfish.jersey.moxy.json.MoxyFeature</param-value>
</init-param>

And if using maven add the following dependency to your pom file

JACKSON

<dependency>
    <groupId>org.glassfish.jersey.media</groupId>
    <artifactId>jersey-media-json-jackson</artifactId>
    <version>your jersey version</version>
</dependency>

MOXY

<dependency>
    <groupId>org.glassfish.jersey.media</groupId>
    <artifactId>jersey-media-moxy</artifactId>
    <version>your jersey version</version>
</dependency>

Upvotes: 14

aksappy
aksappy

Reputation: 3400

Found this as well working, and was the easiest in resolving the problem (AFAIT)

Include the below dependency in your pom.xml / include the respective JAR file in lib path

<dependency>
    <groupId>com.owlike</groupId>
    <artifactId>genson</artifactId>
    <version>0.99</version>
</dependency

Link here

Upvotes: 2

Kalaiselvam M
Kalaiselvam M

Reputation: 1100

Please use the below dependency which will do it automatically for you.

 <dependency>
        <groupId>com.fasterxml.jackson.jaxrs</groupId>
        <artifactId>jackson-jaxrs-json-provider</artifactId>
        <version>2.2.3</version>
   </dependency>

Upvotes: 46

user2769792
user2769792

Reputation: 21

Just use @XmlElement in place of @XmlAttribute (only attribute receives @ prefix, possibly restart your appserver for changed effect!)

Upvotes: 0

Paul C
Paul C

Reputation: 8477

ACtually, it just worked for me, with the PojoMappingFeature param omitted.

Going to:

http://localhost:8080/webapi/myresource/complexObject/foo

yields this json:

{"name":"foo","value1":1374185178829,"value2":42}

web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!-- This web.xml file is not required when using Servlet 3.0 container,
     see implementation details http://jersey.java.net/nonav/documentation/latest/jax-rs.html -->
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
    <servlet>
        <servlet-name>Jersey Web Application</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.example</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Jersey Web Application</servlet-name>
        <url-pattern>/webapi/*</url-pattern>
    </servlet-mapping>
</web-app>

entry point:

package com.example;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

/**
 * Root resource (exposed at "myresource" path)
 */
@Path("myresource")
public class MyResource {

    /**
     * Method handling HTTP GET requests. The returned object will be sent
     * to the client as "text/plain" media type.
     *
     * @return String that will be returned as a text/plain response.
     */
    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public String getIt() {
        return "Got it!";
    }

    @Path( "complexObject/{name}" )
    @GET
    @Produces( { MediaType.APPLICATION_JSON } )
    public ComplexObject complexObject( @PathParam( "name" ) String name ) {
        return new ComplexObject(name, System.currentTimeMillis(), 42L);
    }
}

bean to jsonize:

package com.example;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

/**
 * Root resource (exposed at "myresource" path)
 */
@Path("myresource")
public class MyResource {

    /**
     * Method handling HTTP GET requests. The returned object will be sent
     * to the client as "text/plain" media type.
     *
     * @return String that will be returned as a text/plain response.
     */
    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public String getIt() {
        return "Got it!";
    }

    @Path( "complexObject/{name}" )
    @GET
    @Produces( { MediaType.APPLICATION_JSON } )
    public ComplexObject complexObject( @PathParam( "name" ) String name ) {
        return new ComplexObject(name, System.currentTimeMillis(), 42L);
    }
}

Upvotes: 3

bdoughan
bdoughan

Reputation: 149037

You can configure EclipseLink MOXy as the JSON-binding provider by configuring the MOXyJsonProvider class through a JAX-RS Application class.

Example #1

package org.example;

import java.util.*;
import javax.ws.rs.core.Application;
import org.eclipse.persistence.jaxb.rs.MOXyJsonProvider;

public class CustomerApplication  extends Application {

    @Override
    public Set<Class<?>> getClasses() {
        HashSet<Class<?>> set = new HashSet<Class<?>>(2);
        set.add(MOXyJsonProvider.class);
        set.add(CustomerService.class);
        return set;
    }

}

Example #2

package org.example;

import java.util.*;
import javax.ws.rs.core.Application;
import org.eclipse.persistence.jaxb.rs.MOXyJsonProvider;

public class CustomerApplication  extends Application {

    @Override
    public Set<Class<?>> getClasses() {
        HashSet<Class<?>> set = new HashSet<Class<?>>(1);
        set.add(ExampleService.class);
        return set;
    }

    @Override
    public Set<Object> getSingletons() {
        MOXyJsonProvider moxyJsonProvider = new MOXyJsonProvider();

        moxyJsonProvider.setAttributePrefix("@");
        moxyJsonProvider.setFormattedOutput(true);
        moxyJsonProvider.setIncludeRoot(true);
        moxyJsonProvider.setMarshalEmptyCollections(false);
        moxyJsonProvider.setValueWrapper("$");

        Map<String, String> namespacePrefixMapper = new HashMap<String, String>(1);
        namespacePrefixMapper.put("http://www.example.org/customer", "cust");
        moxyJsonProvider.setNamespacePrefixMapper(namespacePrefixMapper);
        moxyJsonProvider.setNamespaceSeparator(':');

        HashSet<Object> set = new HashSet<Object>(1);
        set.add(moxyJsonProvider);
        return set;
    }

}

For More Information

Upvotes: 7

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