jersey 是基于Java的一个轻量级RESTful风格的Web Services框架。以下我基于IDEA实现Restful完整Demo。

1.创建maven-web工程，后面就是正常的maven工程创建流程。

2.添加Jersey框架的maven文件。

4.0.0

com.restful

jerseyDemo

war

1.0-SNAPSHOT

jerseyDemo Maven Webapp

http://maven.apache.org

junit

junit

3.8.1

test

org.glassfish.jersey.containers

jersey-container-servlet

2.9

org.glassfish.jersey.core

jersey-client

2.9

org.glassfish.jersey.media

jersey-media-json-jackson

2.9

com.sun.jersey

jersey-client

1.19.3

jerseyDemo

3.Restful接口定义。

packagecom.restful.service;importcom.fasterxml.jackson.core.JsonProcessingException;importcom.fasterxml.jackson.databind.ObjectMapper;importcom.restful.entity.PersonEntity;import javax.ws.rs.*;importjavax.ws.rs.core.MediaType;importjava.io.IOException;importjava.util.ArrayList;importjava.util.HashMap;importjava.util.List;importjava.util.Map;/*** Created by XuHui on 2017/8/2.*/@Path("/JerseyService")public classJerseyService {private static Map map = new HashMap();

@GET

@Path("/getAllResource")

@Produces(MediaType.APPLICATION_JSON)public String getAllResource() throwsJsonProcessingException {

List list = new ArrayList();for(PersonEntity entity : map.values()) {

list.add(entity);

}

ObjectMapper mapper= newObjectMapper();returnmapper.writeValueAsString(list);

}

@GET

@Path("/getResourceById/{id}")

@Produces(MediaType.APPLICATION_JSON)public String getResource(@PathParam("id") String id) throwsJsonProcessingException {

ObjectMapper mapper= newObjectMapper();returnmapper.writeValueAsString(map.get(id));

}

@POST

@Path("/addResource/{person}")

@Consumes({MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON})

@Produces(MediaType.APPLICATION_JSON)public String addResource(String person) throwsIOException {

ObjectMapper mapper= newObjectMapper();

PersonEntity entity= mapper.readValue(person, PersonEntity.class);

map.put(entity.getId(), entity);returnmapper.writeValueAsString(entity);

}

@GET

@Path("/getRandomResource")

@Produces(MediaType.APPLICATION_JSON)public String getRandomResource() throwsJsonProcessingException {

ObjectMapper mapper= newObjectMapper();

PersonEntity entity= new PersonEntity("NO1", "Joker", "http:///");returnmapper.writeValueAsString(entity);

}

}

PersonEntity实体类实现。

packagecom.restful.entity;/*** Created by XuHui on 2017/8/2.*/

public classPersonEntity {privateString id;privateString name;privateString addr;publicPersonEntity() {

}publicPersonEntity(String id, String name, String addr) {this.id =id;this.name =name;this.addr =addr;

}publicString getId() {returnid;

}public voidsetId(String id) {this.id =id;

}publicString getName() {returnname;

}public voidsetName(String name) {this.name =name;

}publicString getAddr() {returnaddr;

}public voidsetAddr(String addr) {this.addr =addr;

}

@OverridepublicString toString() {return "PersonEntity{" +

"id='" + id + '\'' +

", name='" + name + '\'' +

", addr='" + addr + '\'' +

'}';

}

}

4.web.xml配置。

/p>

"http://java.sun.com/dtd/web-app_2_3.dtd" >

Archetype Created Web Application

Jersey RESTful Application

org.glassfish.jersey.servlet.ServletContainer

jersey.config.server.provider.packages

com.restful

Jersey RESTful Application

/rest/*

5.搭建本地tomcat

6.运行结果.http://localhost:8080/jerseyDemo/rest/application.wadl是所有对外接口的调用方法。使用postman来看看这个接口是怎么调用的吧。

POST请求

GET请求