Jersey应用

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1.pom.xml依赖

<dependency><groupId>com.sun.jersey</groupId><artifactId>jersey-server</artifactId><version>1.19</version></dependency><dependency><groupId>com.sun.jersey</groupId><artifactId>jersey-grizzly2</artifactId><version>1.19</version></dependency><dependency><groupId>com.sun.jersey</groupId><artifactId>jersey-bundle</artifactId><version>1.19</version></dependency><dependency><groupId>com.sun.jersey</groupId><artifactId>jersey-servlet</artifactId><version>1.19</version></dependency><!-- Json --><dependency><groupId>com.sun.jersey</groupId><artifactId>jersey-json</artifactId><version>1.18</version></dependency><dependency><groupId>com.owlike</groupId><artifactId>genson</artifactId><version>0.99</version></dependency>

2. web.xml

<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>com.ecs.jersey</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>

3.server端代码

package com.ecs.jersey;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import javax.ws.rs.Consumes;import javax.ws.rs.POST;import javax.ws.rs.Path;import javax.ws.rs.Produces;import javax.ws.rs.core.MediaType;import com.ecs.model.User;@Path(value = "/getUsers")public class UserResource {@POST@Consumes(MediaType.APPLICATION_JSON)@Produces(MediaType.APPLICATION_JSON)public Map<String, Object> getUsers() {User user = new User();user.setId(11L);user.setName("张三");Map<String, Object> map = new HashMap<String, Object>();List<User> list = new ArrayList<User>();User u1 = new User();u1.setId(1L);u1.setName("张三");User u2 = new User();u2.setId(2L);u2.setName("李四");list.add(u1);list.add(u2);map.put("list", list);map.put("total", list.size());return map;}}

4. 客户端调用测试

import java.util.HashMap;import javax.ws.rs.core.MediaType;import com.alibaba.fastjson.JSON;import com.alibaba.fastjson.JSONException;import com.alibaba.fastjson.JSONObject;import com.sun.jersey.api.client.Client;import com.sun.jersey.api.client.ClientResponse;import com.sun.jersey.api.client.WebResource;import com.sun.jersey.api.client.config.ClientConfig;import com.sun.jersey.api.client.config.DefaultClientConfig;//jersey客户端调用public class Test {public static void main(String[] args) {ClientConfig cc = new DefaultClientConfig();  Client client = Client.create(cc);  WebResource resource = client.resource("http://localhost:8080/rest/getUsers");  JSONObject req = new JSONObject();          try {              req.put("query", "name");          } catch (JSONException e) {              e.printStackTrace();          }                    ClientResponse response = resource                  .accept(MediaType.APPLICATION_JSON)                  .type(MediaType.APPLICATION_JSON)                  .post(ClientResponse.class, req);                    HashMap resp = response.getEntity(HashMap.class);          System.out.println(JSON.toJSONString(resp));  }}

控制台输出结果:

{"total":2,"list":[{"id":1,"name":"张三"},{"id":2,"name":"李四"}]}

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