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【Java】 http请求

作者:MtrS / 发布于2014/12/30/ 846

java完成http 请求(网络), package 语句的简单使用


	/**
	* Created by lambda on 2014/12/23.
	*/
	
	// package
	// 比如你的 http.java 文件里面第一句是 package com.service
	// 那么你生成的 http.class 文件路径就是 /com/service/http.class
	// 在命令行下 java com.service.http 可执行相应的文件
	//
	
	package com.service;
	
	import java.io.BufferedReader;
	import java.io.DataOutputStream;
	import java.io.IOException;
	import java.io.InputStream;
	import java.net.HttpURLConnection;
	import java.net.URL;
	import java.net.URLEncoder;
	import java.io.InputStreamReader;
	
	public class http {
	 public static final String GET_URL = "http://www.baidu.com";
	 public static void readContentFromGet() throws IOException{
	 String getURL = GET_URL + "?q=hello";
	 URL getUrl = new URL(getURL);
	 HttpURLConnection connection = (HttpURLConnection) getUrl.openConnection();
	 connection.connect();
	 BufferedReader reader = new BufferedReader(new InputStreamReader (connection.getInputStream()));
	 String lines;
	 while ((lines = reader.readLine() )!= null) {
	 System.out.println(lines);
	 }
	 reader.close();
	 connection.disconnect();
	 }
	
	 public static void readContentFromPost() throws IOException{
	 String POST_URL = "http://10.255.24.50/login/";
	 URL postUrl = new URL(POST_URL);
	 HttpURLConnection connection = (HttpURLConnection) postUrl.openConnection();
	 connection.setRequestMethod("POST");
	 connection.setUseCaches(false);
	 connection.setInstanceFollowRedirects(true);
	 connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
	 DataOutputStream out = new DataOutputStream(connection.getOutputStream());
	
	 String content = "firstname="+ URLEncoder.encode("hui", "utf-8");
	
	 out.writeBytes(content);
	 out.flush();
	 out.close();
	
	 BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
	
	 String line;
	
	 System.out.println("content os post request");
	
	 while ((line = reader.readLine()) != null ){
	 System.out.println(line);
	 }
	
	 System.out.println("content of post requests ends" );
	
	 reader.close();
	
	 }
	
	 public static void main(String [] args) {
	
	 try {
	
	 readContentFromGet();
	
	 }catch (IOException e){
	
	 e.printStackTrace();
	 }
	
	 }
	}

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　http请求　

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