Java Socket 实现HTTP与HTTPS协议发送POST/GET请求
来源:互联网 发布:c语言是c 的基础吗 编辑:程序博客网 时间:2024/05/21 01:46
哇,一看标题怎么这么长啊,其实意思很简单,哥讨厌用HTTP Client做POST与GET提交觉得那个毕竟是别人写得API库,所以我就自己实现了一个简单的HTTP客户端,支持POST方式提交数据,GET方式查询数据,是测试Restful API比较方便点,然后支持form与JSON两种方式提交数据,当然也支持返回数据为JSON格式.当然这些东西都是基于Java Socket直接完成的,不借助任何第三方的库,主要是JDK的API其实已经够用啦. 当然我也没有用URLConnect这个东西,毕竟它在Socket基础上又包装了一下,有违我写这篇文章的目的.
好啦,讲完理由,下面就说说要怎么样才能实现啊,光说不练假把式啊!大致分了几个步骤
一:当然是要知道HTTP协议,知道常用的HTTP请求头,比如Host, Accept, Content-Type 知道HTTP协议支持的方法,常用有GET/POST/PUT/DELETE等如果不知道,也不用担心,我保证你读完这篇文章,你就知道一些啦,当然有个最好的参考文档就是HTTP相关的RFC文档,认真读一下肯定解决你自己心中的HTTP那些疑惑
二: 知道发送HTTP GET与POST格式很重要, 固定的格式如下:
[REQUEST]<SP><URL><SP>[HTTP VERSION]<CLRF>
[REQUEST HEADER: ]<SP>[VALUE]<CLRF>
可以有多个请求头
最后<CLRF>
发送完HTTP请求头部以后, 针对不同请求如POST要发送内容部分,发送完成以后同样,以<CLRF>结尾.
解释: <SP>表示空格, <CLRF>表示回车换行Java中表示为”\r\n”REQUEST表示HTTP请求命令,可以为POST, GET, PUT, DELETE等之一,HTTP VERSION的常见可能值为HTTP/1.1或者HTTP/1.0
三: 如果1与2的知识你都具备了,下面就来介绍一下java Socket的相关知识,如何创建一个JAVA客户端套接字Socket s = new Socket()如此即可,简单吧!如何连接到远程的主机与端口, 当提供URL字符串时候,可以这么做
URL url = new URL(“http://blog.csdn.NET/jia20003”);
String host = url.getHost;
int port = url.getDefaultPort();
SocketAddress dest = new InetSocketAddress(this.host, this.port);
s.connect(dest);
即可连接到远程主机,下面就可以请求文章内容了, 也很容易的
- String path = "/jia20003/article/details/16908661";
- SocketAddress dest = new InetSocketAddress(this.host, this.port);
- socket.connect(dest);
- OutputStreamWriter streamWriter = new OutputStreamWriter(socket.getOutputStream());
- bufferedWriter = new BufferedWriter(streamWriter);
- bufferedWriter.write("GET " + path + " HTTP/1.1\r\n");
- bufferedWriter.write("Host: " + this.host + "\r\n");
- bufferedWriter.write("\r\n");
- bufferedWriter.flush();
四:关于HTTP与HTTPS
HTTP协议是位于第四层协议TCP之上完成的应用层协议, 端到端都是明文传送,别人一旦网络抓包以后都可以看到你的提交与请求数据,这个好像不太安全. HTTP协议的默认端口是80这个是RFC文档声明的,属于官方标准,没什么道理可以讲.HTTPS是基于SSL加密传输的,这样别人截获你的数据包破解的概率要小一点,比HTTP安全一点,其默认端口是443, 好像QQ邮箱与谷歌的WEB Mail邮箱都是基于HTTPS. 但是HTTPS通信方式只是传输数据加密,都客户端来说是透明的,它还是一样要遵守HTTP协议规范来发送POST与GET请求等.完整的测试程序如下:
http协议实现:
- package com.gloomyfish.http.client;
- import java.io.BufferedInputStream;
- import java.io.BufferedReader;
- import java.io.BufferedWriter;
- import java.io.IOException;
- import java.io.InputStreamReader;
- import java.io.OutputStreamWriter;
- import java.net.InetSocketAddress;
- import java.net.Socket;
- import java.net.SocketAddress;
- import java.net.URLEncoder;
- public class TestDemo {
- private int port;
- private String host;
- private Socket socket;
- private BufferedReader bufferedReader;
- private BufferedWriter bufferedWriter;
- public TestDemo(String host, int port) {
- socket = new Socket();
- this.host = host;
- this.port = port;
- }
- public void sendGet() throws IOException
- {
- String path = "/zhigang/getDemo.php";
- SocketAddress dest = new InetSocketAddress(this.host, this.port);
- socket.connect(dest);
- OutputStreamWriter streamWriter = new OutputStreamWriter(socket.getOutputStream());
- bufferedWriter = new BufferedWriter(streamWriter);
- bufferedWriter.write("GET " + path + " HTTP/1.1\r\n");
- bufferedWriter.write("Host: " + this.host + "\r\n");
- bufferedWriter.write("\r\n");
- bufferedWriter.flush();
- BufferedInputStream streamReader = new BufferedInputStream(socket.getInputStream());
- bufferedReader = new BufferedReader(new InputStreamReader(streamReader, "utf-8"));
- String line = null;
- while((line = bufferedReader.readLine())!= null)
- {
- System.out.println(line);
- }
- bufferedReader.close();
- bufferedWriter.close();
- socket.close();
- }
- public void sendPost() throws IOException
- {
- String path = "/zhigang/postDemo.php";
- String data = URLEncoder.encode("name", "utf-8") + "=" + URLEncoder.encode("gloomyfish", "utf-8") + "&" +
- URLEncoder.encode("age", "utf-8") + "=" + URLEncoder.encode("32", "utf-8");
- // String data = "name=zhigang_jia";
- SocketAddress dest = new InetSocketAddress(this.host, this.port);
- socket.connect(dest);
- OutputStreamWriter streamWriter = new OutputStreamWriter(socket.getOutputStream(), "utf-8");
- bufferedWriter = new BufferedWriter(streamWriter);
- bufferedWriter.write("POST " + path + " HTTP/1.1\r\n");
- bufferedWriter.write("Host: " + this.host + "\r\n");
- bufferedWriter.write("Content-Length: " + data.length() + "\r\n");
- bufferedWriter.write("Content-Type: application/x-www-form-urlencoded\r\n");
- bufferedWriter.write("\r\n");
- bufferedWriter.write(data);
- bufferedWriter.write("\r\n");
- bufferedWriter.flush();
- BufferedInputStream streamReader = new BufferedInputStream(socket.getInputStream());
- bufferedReader = new BufferedReader(new InputStreamReader(streamReader, "utf-8"));
- String line = null;
- while((line = bufferedReader.readLine())!= null)
- {
- System.out.println(line);
- }
- bufferedReader.close();
- bufferedWriter.close();
- socket.close();
- }
- public static void main(String[] args)
- {
- TestDemo td = new TestDemo("127.0.0.1",8099);
- try {
- // td.sendGet(); //send HTTP GET Request
- td.sendPost(); // send HTTP POST Request
- } catch (IOException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- }
- }
- socket = (SSLSocket)((SSLSocketFactory)SSLSocketFactory.getDefault()).createSocket(this.host, port);
https协议实现:
所以有时候离开apache的HTTP Client等第三方Jar,程序员也是一样活!
- Java Socket 实现HTTP与HTTPS协议发送POST/GET请求
- Java Socket 实现HTTP与HTTPS协议发送POST/GET请求
- JAVA Socket 实现HTTP与HTTPS客户端发送POST与GET方式请求
- JAVA Socket 实现HTTP与HTTPS客户端发送POST与GET方式请求
- JAVA Socket 实现HTTP与HTTPS客户端发送POST与GET方式请求
- 【网络】JAVA Socket 实现HTTP与HTTPS客户端发送POST与GET方式请求
- JAVA Socket 实现HTTP与HTTPS客户端发送POST与GET方式请求
- java http get post请求 https请求实现
- socket编程---实现get post 向http发送请求
- PHP Socket实现HTTP GET POST请求发送
- 使用socket发送http请求(GET/POST)
- 使用socket发送http请求(GET/POST)
- 使用socket发送http请求(GET/POST)
- Java发送http请求 (get 与 post方法请求)转贴
- Java发送http请求 (get 与 post方法请求)
- Java发送http请求 (get 与 post方法请求)
- Java发送http请求 (get 与 post方法请求)
- Java发送http请求 (get 与 post方法请求)
- HashMap和HashSet使用--统计字符出现的次数
- 恩JSP的学习
- 一个可供参考的Java高并发异步应用案例--转
- 通俗理解决策树中的熵&条件熵&信息增益
- Day11-38.Iteration
- Java Socket 实现HTTP与HTTPS协议发送POST/GET请求
- iOS 发布程序~笔记
- R 文本挖掘 Part2--几个聚类分类算法以及应用
- B: 字符串的展开
- Joint Cascade Face Detection and Alignment流程
- Android 轮番图
- VS2013之c++调用Lua5.3.x方法
- Day12-39.Foreach syntax
- MailBee.NET Objects退回邮件教程(二):POP3部分