多线程Web服务器的设计与实现（JAVA与PYTHON）

来源：互联网发布：c语言编程简单的小游戏编辑：程序博客网时间：2024/04/30 00:31

内容相关：

1、网络基本原理（如：HTTP协议、Web服务器、Socket、TCP、UDP等）

2、网络服务器基本配置（简单C/S网络的组建、web服务器的基本配置等）

3、程序设计（socket编程、多线程程序设计等）

JAVA代码：

MultiThreadWebServer.java

import java.net.* ;public final class MultiThreadWebServer {    public static void main(String argv[]) throws Exception {        ServerSocket socket = new ServerSocket(8900);        while (true) {    // Listen for a TCP connection request.    Socket connection = socket.accept();    HttpRequest request = new HttpRequest(connection);        Thread thread = new Thread(request);    thread.start();        }    }}

HttpRequest.java

import java.io.* ;import java.net.* ;import java.util.* ;final class HttpRequest implements Runnable {    final static String CRLF = "\r\n";    Socket socket;        public HttpRequest(Socket socket) throws Exception {        this.socket=socket;    }            public void run() {try {    processRequest();} catch (Exception e) {System.out.println(e);}    }    private void processRequest() throws Exception {    InputStreamReader is=new InputStreamReader(socket.getInputStream());        DataOutputStream os=new  DataOutputStream(socket.getOutputStream());    BufferedReader br = new BufferedReader(is);        String  requestLine;    requestLine=br.readLine();    System.out.println(requestLine);String headerLine = null;while ((headerLine = br.readLine()).length() != 0) {        System.out.println(headerLine);}//Openfile        StringTokenizer tokens = new StringTokenizer(requestLine);        tokens.nextToken();          String fileName = tokens.nextToken();        fileName="."+fileName;        FileInputStream fis = null ;        boolean fileExists = true ;        try {        fis = new FileInputStream(fileName);        } catch (FileNotFoundException e) {        fileExists = false ;        }        // Reponse        String statusLine = null;        //状态行        String contentTypeLine = null;   //Content-Type行        String entityBody = null;        //Entity body部分        if (fileExists) {        statusLine="HTTP/1.1 200 OK"+CRLF;        contentTypeLine = "Content-type: " + contentType( fileName ) + CRLF;                      } else {        statusLine="HTTP/1.1 404 NotFound"+CRLF;        contentTypeLine = "Content-type: text/html"+CRLF;        entityBody ="<html><title>Not found</title><h1>404 NotFound</h1></html>";        }                os.writeBytes(statusLine);        os.writeBytes(contentTypeLine);        os.writeBytes(CRLF);        if (fileExists) {        sendBytes(fis, os);    fis.close();        } else {        os.writeBytes(entityBody);        }        System.out.println();        os.close();        br.close();        socket.close();            }    private static void sendBytes(FileInputStream fis,OutputStream os) throws Exception {     byte[] buffer = new byte[1024];         int bytes=0;         while((bytes=fis.read(buffer))!=-1){         os.write(buffer,0,bytes);         }    }    private static String contentType(String fileName) {        if(fileName.endsWith(".htm") || fileName.endsWith(".html")|| fileName.endsWith(".txt")) {               return "text/html";        }        if(fileName.endsWith(".jpg")) {        return "image/jpeg";        }        if(fileName.endsWith(".gif")) {        return "image/gif";        }        return "application/octet-stream";    }}

结果展示：

PYTHON代码（请在python3下运行）：

import socketimport reimport threadingimport timeCRLF = "\r\n"contentTypeLine="Content-type:";def server(conn,addr):    data = conn.recv(2048)    print(data)    print("-----------\n")        f = data.decode('utf-8').split(' ')[1]    try:        x=open('.'+f,"rb").read()        conn.send(bytearray("HTTP/1.1 200 OK"+CRLF,'utf8'))        conn.send(bytearray(contentTypeLine+webtype(f)+CRLF,'utf8'))        conn.send(bytearray("Date:"+ time.strftime("%Y-%m-%d %H:%M:%S", time.localtime()) +CRLF,'utf8'))        conn.send(bytearray(CRLF,'utf8'))        conn.send(x)        except IOError:        conn.send(bytearray("HTTP/1.1 404 NotFound"+CRLF,'utf8'))        conn.send(bytearray(contentTypeLine+"text/html"+CRLF,'utf8'))        conn.send(bytearray("Date:"+ time.strftime("%Y-%m-%d %H:%M:%S", time.localtime()) +CRLF,'utf8'))        conn.send(bytearray(CRLF,'utf8'))        conn.send(bytes("<h1>404</h1>",'utf8'))        conn.close()def webtype(filename):    a=filename.split('.')[1]    if a == 'txt':        return 'text/html'    if a == 'jpg':        return 'image/jpeg'    return "other type"if __name__ =='__main__':    ip_port = ('127.0.0.1',8888)     web = socket.socket()     web.bind(ip_port)    web.listen(5)     print ('opening...PORT:8888')     while True:        conn,addr = web.accept()          thread = threading.Thread(target=server, args=(conn, addr))        thread.start()

结果与上图类似，不上图了。

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