在java项目中使用Socket如何实现模拟一个HTTP服务器-创新互联
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具体字段这里不作解释,不懂的请先自己了解http协议。这里主要是根据请求响应这一过程模拟HTTP服务器。
下面是代码:
package com.example.httpserver; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.ServerSocket; import java.net.Socket; public class HttpServer { private static final Integer port = 80;//HTTP默认端口80 public static void main(String[] args) { ServerSocket serverSocket; try { //建立服务器Socket,监听客户端请求 serverSocket = new ServerSocket(port); System.out.println("Server is running on port:"+serverSocket.getLocalPort()); //死循环不间断监听客户端请求 while(true){ final Socket socket = serverSocket.accept(); System.out.println("biuld a new tcp link with client,the cient address:"+ socket.getInetAddress()+":"+socket.getPort()); //并发处理HTTP客户端请求 service(socket); } } catch (IOException e) { e.printStackTrace(); } } public static void service(Socket socket) { new Thread(){ public void run(){ InputStream inSocket; try { //获取HTTP请求头 inSocket = socket.getInputStream(); int size = inSocket.available(); byte[] buffer = new byte[size]; inSocket.read(buffer); String request = new String(buffer); System.out.println("ClientBrowser:\n"+request+"\n" + "------------------------------------------------------------------"); String firstLineOfRequest = ""; String[] heads; String uri = "/index.html"; String contentType =""; if(request.length() > 0){ firstLineOfRequest = request.substring(0,request.indexOf("\r\n")); heads = firstLineOfRequest.split(" "); uri = heads[1]; if(uri.indexOf("html") != -1){ contentType = "text/html"; }else{ contentType = "application/octet-stream"; } } //将响应头发送给客户端 String responseFirstLine = "HTTP/1.1 200 OK\r\n"; String responseHead = "Content-Type:" + contentType +"\r\n"; OutputStream outSocket = socket.getOutputStream(); System.out.println("ServerResponse:\n"+responseFirstLine+"\n"+responseHead+"\n" + "--------------------------------------------------------------------"); outSocket.write(responseFirstLine.getBytes()); outSocket.write(responseHead.getBytes()); //通过HTTP请求中的uri读取相应文件发送给客户端 FileInputStream writehtml = new FileInputStream(new File("wwwroot"+uri)); outSocket.write("\r\n".getBytes()); byte[] htmlbuffer = new byte[writehtml.available()]; if(writehtml !=null){ int len = 0; System.out.println("writeHtml"); while((len = writehtml.read(htmlbuffer)) != -1){ outSocket.write(htmlbuffer, 0,len); } } outSocket.close(); socket.close(); } catch (IOException e) { e.printStackTrace(); } } }.start(); } }
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