HttpURLConnection发送post请求

package main.utils;import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;public class HttpUtilTest {Log log = new Log(this.getClass());//初始化日志类/*** @作用 使用urlconnection* @param url* @param Params* @return* @throws IOException*/public String sendPost(String url,String Params)throws IOException{OutputStreamWriter out = null;BufferedReader reader = null;String response="";try {URL httpUrl = null; //HTTP URL类 用这个类来创建连接//创建URLhttpUrl = new URL(url);//建立连接HttpURLConnection conn = (HttpURLConnection) httpUrl.openConnection();conn.setRequestMethod("POST");conn.setRequestProperty("Content-Type", "application/json");conn.setRequestProperty("connection", "keep-alive");conn.setUseCaches(false);//设置不要缓存conn.setInstanceFollowRedirects(true);conn.setDoOutput(true);conn.setDoInput(true);conn.connect();//POST请求out = new OutputStreamWriter(conn.getOutputStream());out.write(Params);out.flush();//读取响应reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));String lines;while ((lines = reader.readLine()) != null) {lines = new String(lines.getBytes(), "utf-8");response+=lines;}reader.close();// 断开连接conn.disconnect();log.info(response.toString());} catch (Exception e) {System.out.println("发送 POST 请求出现异常！"+e);e.printStackTrace();}//使用finally块来关闭输出流、输入流finally{try{if(out!=null){out.close();}if(reader!=null){reader.close();}}catch(IOException ex){ex.printStackTrace();}}return response;}
}

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HttpURLConnection发送post请求

HttpURLConnection发送post请求

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