java调用接口

 public class DemoTest {  
            
              public static final String GET_URL = "http://112.4.27.9/mall-back/if_user/store_list?storeId=32";  //get请求
          //    public static final String POST_URL = "http://112.4.27.9/mall-back/if_user/store_list";  
              public static final String POST_URL = "http://121.40.204.191:8180/mdserver/service/installLock";  //post请求
                
              /** 
               * 接口调用 GET 
               */  
              public static void httpURLConectionGET() {  
                  try {  
                      URL url = new URL(GET_URL);    // 把字符串转换为URL请求地址  
                      HttpURLConnection connection = (HttpURLConnection) url.openConnection();// 打开连接  
                      connection.connect();// 连接会话  
                      // 获取输入流  
                      BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));  
                      String line;  
                      StringBuilder sb = new StringBuilder();  
                      while ((line = br.readLine()) != null) {// 循环读取流  
                          sb.append(line);  
                      }  
                      br.close();// 关闭流  
                      connection.disconnect();// 断开连接  
                      System.out.println(sb.toString());  
                  } catch (Exception e) {  
                      e.printStackTrace();  
                      System.out.println("失败!");  
                  }  
              }  
                
              /** 
               * 接口调用  POST 
               */  
              public static void httpURLConnectionPOST () {  
                  try {  
                      URL url = new URL(POST_URL);  
                        
                      // 将url 以 open方法返回的urlConnection  连接强转为HttpURLConnection连接  (标识一个url所引用的远程对象连接)  
                      HttpURLConnection connection = (HttpURLConnection) url.openConnection();// 此时cnnection只是为一个连接对象,待连接中  
                        
                      // 设置连接输出流为true,默认false (post 请求是以流的方式隐式的传递参数)  
                      connection.setDoOutput(true);  
                        
                      // 设置连接输入流为true  
                      connection.setDoInput(true);  
                        
                      // 设置请求方式为post  
                      connection.setRequestMethod("POST");  
                        
                      // post请求缓存设为false  
                      connection.setUseCaches(false);  
                        
                      // 设置该HttpURLConnection实例是否自动执行重定向  
                      connection.setInstanceFollowRedirects(true);  
                        
                      // 设置请求头里面的各个属性 (以下为设置内容的类型,设置为经过urlEncoded编码过的from参数)  
                      // application/x-javascript text/xml->xml数据 application/x-javascript->json对象 application/x-www-form-urlencoded->表单数据  
                      // ;charset=utf-8 必须要，不然妙兜那边会出现乱码【】  
                      connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");     
                        
                      // 建立连接 (请求未开始,直到connection.getInputStream()方法调用时才发起,以上各个参数设置需在此方法之前进行)  
                      connection.connect();  
                        
                      // 创建输入输出流,用于往连接里面输出携带的参数,(输出内容为?后面的内容)  
                      DataOutputStream dataout = new DataOutputStream(connection.getOutputStream());  
                        
                      String app_key = "app_key="+ URLEncoder.encode("4f7bf8c8260124e6e9c6bf094951a111", "utf-8");        // 已修改【改为错误数据，以免信息泄露】  
                      String agt_num = "&agt_num="+ URLEncoder.encode("10111", "utf-8");              // 已修改【改为错误数据，以免信息泄露】  
                      String pid = "&pid="+ URLEncoder.encode("BLZXA150401111", "utf-8");             // 已修改【改为错误数据，以免信息泄露】  
                      String departid = "&departid="+ URLEncoder.encode("10007111", "utf-8");         // 已修改【改为错误数据，以免信息泄露】  
                      String install_lock_name = "&install_lock_name="+ URLEncoder.encode("南天大门", "utf-8");  
                      String install_address = "&install_address="+ URLEncoder.encode("北京育新", "utf-8");  
                      String install_gps = "&install_gps="+ URLEncoder.encode("116.350888,40.011001", "utf-8");  
                      String install_work = "&install_work="+ URLEncoder.encode("小李", "utf-8");  
                      String install_telete = "&install_telete="+ URLEncoder.encode("13000000000", "utf-8");  
                      String intall_comm = "&intall_comm="+ URLEncoder.encode("一切正常", "utf-8");  
                        
                      // 格式 parm = aaa=111&bbb=222&ccc=333&ddd=444  
                      String parm = app_key+ agt_num+ pid+ departid+ install_lock_name+ install_address+ install_gps+ install_work+ install_telete+ intall_comm;  
                        
                      // 将参数输出到连接  
                      dataout.writeBytes(parm);  
                        
                      // 输出完成后刷新并关闭流  
                      dataout.flush();  
                      dataout.close(); // 重要且易忽略步骤 (关闭流,切记!)   
                        
          //            System.out.println(connection.getResponseCode());  
                        
                      // 连接发起请求,处理服务器响应  (从连接获取到输入流并包装为bufferedReader)  
                      BufferedReader bf = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));   
                      String line;  
                      StringBuilder sb = new StringBuilder(); // 用来存储响应数据  
                        
                      // 循环读取流,若不到结尾处  
                      while ((line = bf.readLine()) != null) {  
          //                sb.append(bf.readLine());  
                          sb.append(line).append(System.getProperty("line.separator"));  
                      }  
                      bf.close();    // 重要且易忽略步骤 (关闭流,切记!)   
                      connection.disconnect(); // 销毁连接  
                      System.out.println(sb.toString());  
                
                  } catch (Exception e) {  
                      e.printStackTrace();  
                  }  
              }  
                
              public static void main(String[] args) {  
          //        httpURLConectionGET();  
                  httpURLConnectionPOST();  
              }  
          }