代碼如下：

import java.io.BufferedReader;  import java.io.DataOutputStream;  import java.io.InputStreamReader;  import java.net.HttpURLConnection;  import java.net.URL;  import java.net.URLEncoder;    public class DemoTest1 {        public static final String GET_URL = "http://112.4.27.9/mall-back/if_user/store_list?storeId=32";  //    public static final String POST_URL = "http://112.4.27.9/mall-back/if_user/store_list";      // 妙兜測(cè)試接口      public static final String POST_URL = "http://121.40.204.191:8180/mdserver/service/installLock";            /**      * 接口調(diào)用 GET      */      public static void httpURLConectionGET() {          try {              URL url = new URL(GET_URL);    // 把字符串轉(zhuǎn)換為URL請(qǐng)求地址              HttpURLConnection connection = (HttpURLConnection) url.openConnection();// 打開(kāi)連接              connection.connect();// 連接會(huì)話              // 獲取輸入流              BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));              String line;              StringBuilder sb = new StringBuilder();              while ((line = br.readLine()) != null) {// 循環(huán)讀取流                  sb.append(line);              }              br.close();// 關(guān)閉流              connection.disconnect();// 斷開(kāi)連接              System.out.PRintln(sb.toString());          } catch (Exception e) {              e.printStackTrace();              System.out.println("失敗!");          }      }            /**      * 接口調(diào)用  POST      */      public static void httpURLConnectionPOST () {          try {              URL url = new URL(POST_URL);                            // 將url 以 open方法返回的urlConnection  連接強(qiáng)轉(zhuǎn)為HttpURLConnection連接  (標(biāo)識(shí)一個(gè)url所引用的遠(yuǎn)程對(duì)象連接)              HttpURLConnection connection = (HttpURLConnection) url.openConnection();// 此時(shí)cnnection只是為一個(gè)連接對(duì)象,待連接中                            // 設(shè)置連接輸出流為true,默認(rèn)false (post 請(qǐng)求是以流的方式隱式的傳遞參數(shù))              connection.setDoOutput(true);                            // 設(shè)置連接輸入流為true              connection.setDoInput(true);                            // 設(shè)置請(qǐng)求方式為post              connection.setRequestMethod("POST");                            // post請(qǐng)求緩存設(shè)為false              connection.setUseCaches(false);                            // 設(shè)置該HttpURLConnection實(shí)例是否自動(dòng)執(zhí)行重定向              connection.setInstanceFollowRedirects(true);                            // 設(shè)置請(qǐng)求頭里面的各個(gè)屬性 (以下為設(shè)置內(nèi)容的類(lèi)型,設(shè)置為經(jīng)過(guò)urlEncoded編碼過(guò)的from參數(shù))              // application/x-javascript text/xml->xml數(shù)據(jù) application/x-Javascript->json對(duì)象 application/x-www-form-urlencoded->表單數(shù)據(jù)              // ;charset=utf-8 必須要，不然妙兜那邊會(huì)出現(xiàn)亂碼【★★★★★】              connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");                               // 建立連接 (請(qǐng)求未開(kāi)始,直到connection.getInputStream()方法調(diào)用時(shí)才發(fā)起,以上各個(gè)參數(shù)設(shè)置需在此方法之前進(jìn)行)              connection.connect();                            // 創(chuàng)建輸入輸出流,用于往連接里面輸出攜帶的參數(shù),(輸出內(nèi)容為?后面的內(nèi)容)              DataOutputStream dataout = new DataOutputStream(connection.getOutputStream());                            String app_key = "app_key="+ URLEncoder.encode("4f7bf8c8260124e6e9c6bf094951a111", "utf-8");        // 已修改【改為錯(cuò)誤數(shù)據(jù)，以免信息泄露】              String agt_num = "&agt_num="+ URLEncoder.encode("10111", "utf-8");              // 已修改【改為錯(cuò)誤數(shù)據(jù)，以免信息泄露】              String pid = "&pid="+ URLEncoder.encode("BLZXA150401111", "utf-8");             // 已修改【改為錯(cuò)誤數(shù)據(jù)，以免信息泄露】              String departid = "&departid="+ URLEncoder.encode("10007111", "utf-8");         // 已修改【改為錯(cuò)誤數(shù)據(jù)，以免信息泄露】              String install_lock_name = "&install_lock_name="+ URLEncoder.encode("南天大門(mén)", "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;                            // 將參數(shù)輸出到連接              dataout.writeBytes(parm);                            // 輸出完成后刷新并關(guān)閉流              dataout.flush();              dataout.close(); // 重要且易忽略步驟 (關(guān)閉流,切記!)                 //            System.out.println(connection.getResponseCode());                            // 連接發(fā)起請(qǐng)求,處理服務(wù)器響應(yīng)  (從連接獲取到輸入流并包裝為bufferedReader)              BufferedReader bf = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));               String line;              StringBuilder sb = new StringBuilder(); // 用來(lái)存儲(chǔ)響應(yīng)數(shù)據(jù)                            // 循環(huán)讀取流,若不到結(jié)尾處              while ((line = bf.readLine()) != null) {  //                sb.append(bf.readLine());                  sb.append(line).append(System.getProperty("line.separator"));              }              bf.close();    // 重要且易忽略步驟 (關(guān)閉流,切記!)               connection.disconnect(); // 銷(xiāo)毀連接              System.out.println(sb.toString());                } catch (Exception e) {              e.printStackTrace();          }      }            public static void main(String[] args) {  //        httpURLConectionGET();          httpURLConnectionPOST();      }  }  
只使用了POST請(qǐng)求方法，GET沒(méi)有用，為了保證代碼完整性所以沒(méi)有刪除GET請(qǐng)求代碼     返回結(jié)果：
{    "status" : "fail",    "code" : "ERR001",    "msg" : "商戶(hù)10111不存在"  }