网络编程基础，模拟get post请求

短命女 2022-08-08 13:44 150阅读 0赞

## 网络编程基础，模拟get post请求 ##

package com.zcwfeng.java.test.netsocket;
 
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.io.PrintWriter;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.net.URLConnection;
 import java.util.List;
 import java.util.Map;
 
 /** * Description: * Copyright (C), 2005-2015,David * Thies program is protected by copyright * David. Program name * Date:2015年5月19日 * * @author David zcwfeng@126.com * @version 1.0 * */
 public class TestGetPost { 
 
 public static String sendGet(String url, String param) {
 String result = "";
 BufferedReader bf = null;
 String urlName = url + "?" + param;
 try {
 URL realUrl = new URL(urlName);
 URLConnection conn = realUrl.openConnection();
 conn.setRequestProperty("accept", "*/*");
 conn.setRequestProperty("connection", "keep-alive");
 conn.setRequestProperty("User-Agent",
 "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0");
 conn.connect();
 Map<String, List<String>> map = conn.getHeaderFields();
 
 for (String key : map.keySet()) {
 System.out.println(key + "---->" + map.get(key));
 }
 
 bf = new BufferedReader(
 new InputStreamReader(conn.getInputStream()));
 String line;
 while ((line = bf.readLine()) != null) {
 result += "\n" + line;
 }
 } catch (MalformedURLException e) {
 e.printStackTrace();
 } catch (IOException e) {
 e.printStackTrace();
 } finally {
 if (bf != null) {
 try {
 bf.close();
 } catch (IOException e) {
 e.printStackTrace();
 }
 }
 }
 return result;
 }
 
 public static String sendPost(String url, String param) {
 String result = "";
 PrintWriter out = null;
 BufferedReader bf = null;
 try {
 URL realUrl = new URL(url);
 URLConnection conn = realUrl.openConnection();
 conn.setRequestProperty("accept", "*/*");
 conn.setRequestProperty("connection", "keep-alive");
 conn.setRequestProperty("User-Agent",
 "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0");
 conn.setDoOutput(true);
 conn.setDoInput(true);
 
 out = new PrintWriter(conn.getOutputStream());
 // 发送参数
 out.print(param);
 out.flush();
 bf = new BufferedReader(
 new InputStreamReader(conn.getInputStream()));
 String line;
 while ((line = bf.readLine()) != null) {
 result += "\n" + line;
 }
 } catch (MalformedURLException e) {
 e.printStackTrace();
 } catch (IOException e) {
 e.printStackTrace();
 } finally {
 try {
 if (out != null)
 out.close();
 if (bf != null)
 bf.close();
 } catch (IOException e) {
 e.printStackTrace();
 }
 }
 return result;
 }
 
 public static void main(String[] args) {
 String s = TestGetPost.sendGet(
 "http://blog.csdn.net/tjy1985/article/details/7893247", null);
 System.out.println(s);
 String s1 = TestGetPost
 .sendPost(
 "http://baike.baidu.com/link",
 "url=NvbjOHw-70YYeKdNfExBl4owaDO1IGZK9-6nCFSaf9-HGfPaK6BAtUAT5O7BdvW1AhaTgDh1AcZQdyGXw_3VOK");
 System.out.println(s1);
 }
 }