SOCKET模仿HTTP POST请求

最新推荐文章于 2023-03-31 18:03:20 发布

ppt0501

最新推荐文章于 2023-03-31 18:03:20 发布

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分类专栏： java后台文章标签： http协议 post socket

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本文介绍了一种通过Java Socket API模拟HTTP POST请求的方法，并提供了一个具体的代码示例。该示例展示了如何设置请求头、定义请求正文以及发送请求。

http最常用的两种请求方法，get和post，现在用socket模仿post请求，以便能更深入理解http协议，代码如下：

package com.ppt.socket;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketAddress;
import java.net.URL;

public class SocketHttpPost {

	private final String END = "\r\n";
	private Socket client;
	private InputStream is;
	private OutputStream os;
	private String host;
	private String path;
	
	public SocketHttpPost(String url) {
		try {
			init(url);
		} catch(Exception e) {
			e.printStackTrace();
		}
	}
	private void init(String url) throws Exception {
		URL temp = new URL(url);
		this.host = temp.getHost();
		this.path = temp.getPath();
		int port = temp.getPort();
		client = new Socket();
		SocketAddress address = new InetSocketAddress(this.host, port);
		client.connect(address, 5000);
		client.setSoTimeout(10000);
		is = client.getInputStream();
		os = client.getOutputStream();
	}
	private void post() throws IOException {
		String data = "username=ppt&password=ppt";
		StringBuffer sb = new StringBuffer();
		sb.append("POST "+ this.path +" HTTP/1.1" + END);
		sb.append("Host: " + this.host + END);
		sb.append("User-Agent:Mozilla/4.0(compatible;MSIE6.0;Windows NT 5.0)" + END);
		sb.append("Accept-Language:zh-cn" + END);
		sb.append("Accept-Encoding:deflate" + END);
		sb.append("Accept:*/*" + END);
		sb.append("Connection:Keep-Alive" + END);
		sb.append("Content-Type: application/x-www-form-urlencoded" + END);
		sb.append("Content-Length: "+ data.length() + END);
		sb.append(END);
		sb.append(data);
		String requestString = sb.toString();
		System.out.println(requestString);
		os.write(requestString.getBytes());
		os.flush();
		byte[] rBuf = new byte[1024];
		int i = is.read(rBuf);
		System.out.println(new String(rBuf));
	}
	public static void main(String[] args) throws IOException {
		String url = "http://localhost:9090/pptinterface/hello";
		SocketHttpPost post = new SocketHttpPost(url);
		post.post();
	}

}