HttpUtil 模拟浏览器发送HTTP请求

package rg.sso.util;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;

public class HttpUtil {
	/**
	 * @Description:HTTP请求post
	 * @author 张颖辉
	 * @date 2017年9月5日上午10:42:33
	 * @param url
	 * @param params
	 * @return
	 * @throws IOException
	 */
	public static String http(String url, Map
 
   params) throws IOException {
		return http("POST", url, params);
	}
	/**
	 * @Title:函数
	 * @Description:可以指定类型的http请求
	 * @author 张颖辉
	 * @date 2017年9月8日上午10:11:40
	 * @param method
	 * @param url
	 * @param params
	 * @return
	 * @throws IOException
	 */
	public static String http(String method,String url, Map
  
    params) throws IOException{ try { URL u = null; HttpURLConnection con = null; // 构建请求参数 StringBuffer sb = new StringBuffer(); String requestStr = null; if (params != null) { for (Entry
   
     e : params.entrySet()) { sb.append(e.getKey()); sb.append("="); sb.append(e.getValue()); sb.append("&"); } requestStr = sb.substring(0, sb.length() - 1); } else { requestStr = sb.toString(); } // System.out.println("send_url:"+url); // System.out.println("send_data:"+sb.toString()); // 尝试发送请求 u = new URL(url); con = (HttpURLConnection) u.openConnection(); con.setRequestMethod(method); con.setDoOutput(true); con.setDoInput(true); con.setUseCaches(false); con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); OutputStreamWriter osw = new OutputStreamWriter(con.getOutputStream(), "UTF-8"); osw.write(requestStr); osw.flush(); osw.close(); if (con != null) { con.disconnect(); } // 读取返回内容 StringBuffer buffer = new StringBuffer(); BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream(), "UTF-8")); String temp; while ((temp = br.readLine()) != null) { buffer.append(temp); buffer.append("\n"); } return buffer.toString(); } catch (IOException e) { e.printStackTrace(); throw new IOException(); } } public static void main(String[] args) { Map
    
      parms = new HashMap
     
      (); parms.put("playa", "39"); parms.put("playb", "38"); String url = "http://localhost:8080/pool/scoring/scoring_basic.action"; try { System.out.println(http(url, parms)); } catch (Exception e) { e.printStackTrace(); } } }