HttpClient client = new HttpClient();  

form表單提交資料：

PostMethod post = new PostMethod(具體的url);
post.setRequestHeader("Content-Type","application/x-www-form-urlencoded;charset=utf-8");
NameValuePair[] param = {  
                new NameValuePair("postid",expressNum),  
                new NameValuePair("type",expressCompany)
                };  
        post.setRequestBody(param);  
        post.releaseConnection(); 
        client.executeMethod(post);
        //處理json串
        String response = post.getResponseBodyAsString();
        JSONObject jsonStr = JSONObject.fromObject(response);
        JSONArray jsonArray = jsonStr.getJSONArray("data");
        //迴圈新增到infolist中
        if (jsonArray!=null&&jsonArray.size()>0) {
			for (int i=0;i<jsonArray.size();i++) {
				LogisticsInfoVO v=new LogisticsInfoVO();
				JSONObject jsonObject = jsonArray.getJSONObject(i);
				v.setArriveTime(DateUtils.StringToDate(jsonObject.get("time").toString(),"yyyy-MM-dd HH:mm:ss"));
				v.setArriveAddress(jsonObject.getString("location"));
				v.setCurrentRemark(jsonObject.getString("context"));
				infoList.add(v);
			}
 

json格式提交資料：

CloseableHttpClient client = HttpClients.createDefault();


 HttpPost httpPost = new HttpPost(url);
 httpPost.setHeader("Content-Type", "application/json;charset=UTF-8");

Map<String,Object> paramMap = new HashMap<String, Object>();
paramMap.put("account", account);
paramMap.put("password", password);

 Gson gson = new Gson();
 String parameter = gson.toJson(paramMap);
  StringEntity se = new StringEntity(parameter,Charset.forName("UTF-8"));//解決請求引數亂碼
 se.setContentType("text/json");

 httpPost.setEntity(se);

CloseableHttpResponse response = client.execute(httpPost);
HttpEntity entity = response.getEntity();
String result = EntityUtils.toString(entity, "UTF-8");//解決響應亂碼
JSONObject jsonResult = JSONObject.fromObject(result);