java用socket来做http服务器

待我称王封你为后i 2024-02-19 16:30 52阅读 0赞

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("服务器端口:"+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("接收到一个请求，请求地址:"+  
                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(final 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 = ""; //http报文头
              String[] heads; //报文头的数据集合
              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"; 
                } 
              } 
              System.out.println("http报文内容："+request.substring(request.indexOf("\r\n"),request.length()));
              
              //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(); 
      } 
      
    }