Java 調用restful webservice & jackson

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package com.bullshit.webcrawler.client.impl;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStream;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;import java.util.List;import com.bullshit.storage.entity.AuthUser;import com.bullshit.storage.entity.Proxy;import com.bullshit.storage.entity.vo.AuthUsersVo;import com.fasterxml.jackson.databind.ObjectMapper;public class ProxyCollectionRestService {private static final String targetURL = "http://localhost:8080/blueberry/rest/v1/api/proxies";public Proxy[] getAllProxies(){Proxy[] proxies = null;try {          URL restServiceURL = new URL(targetURL);          HttpURLConnection httpConnection = (HttpURLConnection) restServiceURL.openConnection();          httpConnection.setRequestMethod("GET");      httpConnection.setRequestProperty("Accept", "application/json");      if (httpConnection.getResponseCode() != 200) {             throw new RuntimeException("HTTP GET Request Failed with Error code : "                           + httpConnection.getResponseCode());      }      BufferedReader responseBuffer = new BufferedReader(new InputStreamReader(             (httpConnection.getInputStream())));      String output;          ObjectMapper objectMapper = new ObjectMapper();          while ((output = responseBuffer.readLine()) != null) {          proxies = objectMapper.readValue(output, Proxy[].class);          List<Proxy> myObjects22 = objectMapper.readValue(output, objectMapper.getTypeFactory().constructCollectionType(List.class, Proxy.class));              System.out.println(myObjects22.size());          break;          }          httpConnection.disconnect();     } catch (MalformedURLException e) {          e.printStackTrace();     } catch (IOException e) {          e.printStackTrace();     }return proxies;}public AuthUsersVo postAuthUserInfo(AuthUser record){AuthUsersVo authUsersVo = null; try {             URL targetUrl = new URL(targetURL);             HttpURLConnection httpConnection = (HttpURLConnection) targetUrl.openConnection();             httpConnection.setDoOutput(true);             httpConnection.setRequestMethod("POST");             httpConnection.setRequestProperty("Content-Type", "application/json");             ObjectMapper objectMapper = new ObjectMapper();             String input = objectMapper.writeValueAsString(record);             OutputStream outputStream = httpConnection.getOutputStream();             outputStream.write(input.getBytes());             outputStream.flush();             if (httpConnection.getResponseCode() != 200) {                    throw new RuntimeException("Failed : HTTP error code : "                           + httpConnection.getResponseCode());             }                          BufferedReader responseBuffer = new BufferedReader(new InputStreamReader(                           (httpConnection.getInputStream())));             String output;             System.out.println("Output from Server:\n");             while ((output = responseBuffer.readLine()) != null) {                    System.out.println(output);             }             httpConnection.disconnect();        } catch (MalformedURLException e) {             e.printStackTrace();        } catch (IOException e) {             e.printStackTrace();       }return authUsersVo;}public static void main(String[] args) {ProxyCollectionRestService service = new ProxyCollectionRestService();Proxy[] s = service.getAllProxies();System.out.println(s.length);}}

　　

Java 調用restful webservice & jackson