Apache HttpClient调用Spring3 MVC Restful Web API演示

<dependency>
  <groupId>org.apache.httpcomponents</groupId>
  <artifactId>httpclient</artifactId>
  <version>4.5.1</version>
</dependency>
<dependency>
  <groupId>com.google.code.gson</groupId>
  <artifactId>gson</artifactId>
  <version>2.5</version>
</dependency>

package com.httpclient.demo;
 
import java.io.IOException;
import java.util.List;
 
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
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.HttpClientBuilder;
import org.apache.http.util.EntityUtils;
 
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;
 
public class HttpClientDemo {
 
  public static void main(String[] args) {
    HttpClient httpClient = HttpClientBuilder.create().build(); // Use this
                                  // instead
    HttpGet request = new HttpGet("http://localhost:8080/clotherdye/api/myTest/list");
    request.addHeader("content-type", "application/json");
    request.addHeader("Accept", "application/json");
    try {
      // get with json
      HttpResponse httpResponse = httpClient.execute(request);
      String response = EntityUtils.toString(httpResponse.getEntity());
      Gson gson = new Gson();
      List<PersonDto> embossList = gson.fromJson(response, new TypeToken<List<PersonDto>>(){}.getType());
      if(embossList != null && embossList.size() > 0)
      {       
        System.out.println("Name = " + embossList.get(0).getName());
        System.out.println("Country = " + embossList.get(0).getCountry());
        System.out.println("dddddddddd");
      }
      
      // post data with json
      HttpPost httpPost = new HttpPost("http://localhost:8080/clotherdye/api/myTest/create");
      httpPost.addHeader("content-type", "application/json");
      httpPost.addHeader("Accept", "application/json");
      PersonDto dto = new PersonDto();
      dto.setName("http-client");
      dto.setHobby("json parser");
      dto.setCountry("US");
      dto.setDegree("本科");
      dto.setOccupy("tester");
      String jsonString = gson.toJson(dto);
      StringEntity entity = new StringEntity(jsonString);
      httpPost.setEntity(entity);
      httpResponse = httpClient.execute(httpPost);
      response = EntityUtils.toString(httpResponse.getEntity());
      System.out.println(response);
      
    } catch (ClientProtocolException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    } finally {
      
    }
  }
}

public class PersonDto {
  public String getName() {
    return name;
  }
  public void setName(String name) {
    this.name = name;
  }
  public String getCountry() {
    return country;
  }
  public void setCountry(String country) {
    this.country = country;
  }
  public String getDegree() {
    return degree;
  }
  public void setDegree(String degree) {
    this.degree = degree;
  }
  public String getOccupy() {
    return occupy;
  }
  public void setOccupy(String occupy) {
    this.occupy = occupy;
  }
  public String getHobby() {
    return hobby;
  }
  public void setHobby(String hobby) {
    this.hobby = hobby;
  }
  private String name;
  private String country;
  private String degree;
  private String occupy;
  private String hobby;
}

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
 
import org.springframework.stereotype.Controller;
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;
 
@Controller
@RequestMapping("/api/myTest")
public class RestfulAPIController {
  
  
  @RequestMapping("/list")
  public @ResponseBody List<PersonDto> getList() {
    List<PersonDto> persons = new ArrayList<PersonDto>();
    PersonDto p1 = new PersonDto();
    p1.setCountry("中国");
    p1.setDegree("本科");
    p1.setHobby("编程");
    p1.setName("zhigang");
    p1.setOccupy("程序员");
    
    PersonDto p2 = new PersonDto();
    p2.setCountry("中国");
    p2.setDegree("本科");
    p2.setHobby("图像处理");
    p2.setName("jia20003");
    p2.setOccupy("码农");
    
    persons.add(p1);
    persons.add(p2);
    System.out.println("start to get PersonDto list");
    return persons;
  }
  
  @RequestMapping(value = "/create", method = RequestMethod.POST)
  @ResponseBody
  public Map<String, Object> createMember(@RequestBody PersonDto dto)
  {
    System.out.println(dto.getName());
    System.out.println(dto.getOccupy());
    Map<String, Object> map = new HashMap<String, Object>();
    map.put("success", dto.getName() + "创建成功!");
    return map;
  }
}