Android 开发工具类 29_sendPOSTRequest

sendPOSTRequest 业务类

 package com.wangjialin.internet.userInformation.service;

 import java.io.OutputStream;
 import java.net.HttpURLConnection;
 import java.net.URL;
 import java.net.URLEncoder;
 import java.util.HashMap;
 import java.util.Map;

 public class UploadUserInformationByPostService {
     public static boolean save(String title, String length) throws Exception{
         String path = "http://192.168.1.103:8080/ServerForPOSTMethod/ServletForPOSTMethod";
         Map<String, String> params = new HashMap<String, String>();
         params.put("name", title);
         params.put("age", length);
         return sendPOSTRequest(path, params, "UTF-8");
     }

     /**
      * 发送POST请求
      * @param path 请求路径
      * @param params 请求参数
      * @return
      */
     private static boolean sendPOSTRequest(String path, Map<String, String> params, String encoding) throws Exception{
         //  title=liming&length=30
         StringBuilder sb = new StringBuilder();
         if(params!=null && !params.isEmpty()){
             for(Map.Entry<String, String> entry : params.entrySet()){
                 sb.append(entry.getKey()).append("=");
                 sb.append(URLEncoder.encode(entry.getValue(), encoding));
                 sb.append("&");
             }
             sb.deleteCharAt(sb.length() - 1);
         }
         byte[] data = sb.toString().getBytes();

         HttpURLConnection conn = (HttpURLConnection) new URL(path).openConnection();
         conn.setConnectTimeout(5000);
         conn.setRequestMethod("POST");
         conn.setDoOutput(true);//允许对外传输数据
         conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
         conn.setRequestProperty("Content-Length", data.length+"");

         OutputStream outStream = conn.getOutputStream();
         outStream.write(data);
         outStream.flush();

         if(conn.getResponseCode() == 200){
             return true;
         }
         return false;
     }
 }