Spring mvc REST风格对外接口，HttpClient调用

客户端代码

1. 所需jar
   

2. HttpClient代码

import java.io.UnsupportedEncodingException;import java.nio.charset.Charset;import net.sf.json.JSONObject;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.StatusLine;import org.apache.http.client.HttpClient;import org.apache.http.client.methods.HttpGet;import org.apache.http.client.methods.HttpPost;import org.apache.http.entity.StringEntity;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.util.EntityUtils;import com.itcast.httpClient.bean.User;/** 1. 测试HttpClient 2. @author sWX300935 3.  */@SuppressWarnings("deprecation")public class HttpClientTest {    //get接口掉方法    public static String callInterface(){        HttpClient httpClient = new DefaultHttpClient();        HttpGet httpGet = new HttpGet("http://localhost:8080/testSpringMVC/httpService/req/userInfo/zhangsan");        String entityStr = null;        try {            HttpResponse httpResponse = httpClient.execute(httpGet);            HttpEntity entity = httpResponse.getEntity();            StatusLine statusLine = httpResponse.getStatusLine();            int statusCode = statusLine.getStatusCode();            System.out.println("statusCode:"+statusCode);            entityStr = EntityUtils.toString(entity);            System.out.println("响应返回内容:"+entityStr);        } catch (Exception e) {            // TODO Auto-generated catch block            e.printStackTrace();        }        return entityStr;    }    //post提交调用方法    public static String callAddUserInfo() throws UnsupportedEncodingException{        User user = new User();        user.setUserName("小文");        user.setUserAge("15");        user.setUserSex("女");        String str = JSONObject.fromObject(user).toString();        System.out.println(str);        HttpClient httpClient = new DefaultHttpClient();        HttpPost httpPost = new HttpPost("http://localhost:8080/testSpringMVC/httpService/req/addUserInfo");        httpPost.setEntity(new StringEntity("str="+str, Charset.forName("utf-8")));        //httpPost.setHeader("Content-Type", "text/xml;charset=UTF-8");            /* httppost.getParams().setParameter(HTTP.CONTENT_ENCODING, HTTP.UTF_8);             httppost.getParams().setParameter(HTTP.CHARSET_PARAM, HTTP.UTF_8);             httppost.getParams().setParameter(HTTP.DEFAULT_PROTOCOL_CHARSET, HTTP.UTF_8); */        try {            HttpResponse response = httpClient.execute(httpPost);            int statusCode = response.getStatusLine().getStatusCode();            System.out.println(statusCode);        } catch (Exception e) {            // TODO Auto-generated catch block            e.printStackTrace();        }         return null;    }    public static void main(String[] args) throws Exception {        //String callInterface = callInterface();        //System.out.println("调用成功："+callInterface);        callAddUserInfo();    }}

1. 服务端（此处使用springMVC提供接口，springMVC不做描述）

javax.ws.rs-api-2.0.jar 需导入 用来创建RESTful服务资源 设置媒体资源

import javax.ws.rs.core.MediaType;import net.sf.json.JSONObject;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestBody;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.ResponseBody;import com.itcast.bean.User;/** Http服务端 */@Controller@RequestMapping(value = "/httpService")public class HttpServiceDemo {    /*GET方式*/    @ResponseBody    @RequestMapping(value = "/req/userInfo/{userName}",method = RequestMethod.GET,produces="application/json;charset=UTF-8")    public String getUserInfo(@PathVariable("userName") String userName){        if(userName.equals("zhangsan") ){        User getUser = new User();        getUser.setUserName("zhangsan");        getUser.setUserAge("20");        getUser.setUserSex("男");        String userString = JSONObject.fromObject(getUser).toString();        return userString;        }        return "{\"error\":\"请求数据为空\"}";    }    /*POST方式*/    @ResponseBody    @RequestMapping(value="/req/addUserInfo",method = RequestMethod.POST,    produces = {MediaType.APPLICATION_JSON,"application/json;charset=UTF-8"})    //consumes = {MediaType.APPLICATION_JSON,MediaType.APPLICATION_XML})    public String addUserInfo(@RequestBody String str){        //@RequestBody User user        System.out.println(str);        return null;    }}

5.配置spring-mvc.xml

<!-- 设置注解驱动 -->    <mvc:annotation-driven/>    <!-- 配置只扫面controller的注解过滤器 -->    <context:component-scan base-package="com.itcast" use-default-filters="false">        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>    </context:component-scan>      <!-- 消息适配器 -->       <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">          <property name="messageConverters">              <list>                  <ref bean="stringHttpMessageConverter" />                  <ref bean="jsonHttpMessageConverter" />              </list>          </property>      </bean>      <bean id="stringHttpMessageConverter" class="org.springframework.http.converter.StringHttpMessageConverter">          <property name="supportedMediaTypes">              <list>                  <value>text/plain;charset=UTF-8</value>                  <value>application/json;charset=UTF-8</value>              </list>          </property>      </bean>       <bean id="jsonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" />  

1. web.xml

<servlet>        <servlet-name>springMVC</servlet-name>        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>        <init-param>            <param-name>contextConfigLocation</param-name>            <param-value>classpath:Spring-MVC.xml</param-value>        </init-param>        <load-on-startup>1</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>springMVC</servlet-name>        <url-pattern>/</url-pattern>    </servlet-mapping>