Java——简单Web服务器实现.docx

这是一个简单的Web服务器实现，主要功能就是根据用户请求在同一文件夹下查找对应文件并传输，找不到就传输错误页面。及运行截图如下：/测试网页在同一文件夹下import java.io.*;import .*;import java.util.*;import java.awt.*;import javax.swing.*;public class MultiThreadServer extends JFrame private JTextArea jta =new JTextArea();public static void main(String args)new MultiThreadServer();public MultiThreadServer() setLayout(new BorderLayout();/create the GUIadd(new JScrollPane(jta), BorderLayout.CENTER);setTitle(MultiThreadServer by Li Zhaoji);setSize(500, 300);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setVisible(true);tryServerSocket serverSocket = new ServerSocket(8080);/wait request on port 8080jta.append(MultiThreadServer started at + new Date() + n);jta.append(Web Server is listening on port +serverSocket.getLocalPort() + n + n);int clientNo = 1;while (true) Socket socket = serverSocket.accept();/wait for requestjta.append(* + n);jta.append(Starting thread for client + clientNo + at + new Date() + n);InetAddress inetAddress = socket.getInetAddress();/get the client informationjta.append(Client + clientNo + s host name is + inetAddress.getHostName() + n);jta.append(Client + clientNo + s IP Address is + inetAddress.getHostAddress() + n);HandleAClient task = new HandleAClient(socket);new Thread(task).start();/create a new thread handle the requestclientNo+;catch(IOException ex) System.err.println(ex);class HandleAClient implements Runnable private Socket socket;public HandleAClient(Socket socket)this.socket = socket;public void run() tryBufferedReader inputFromClient = new BufferedReader(new InputStreamReader(socket.getInputStream();PrintStream outputToClient = new PrintStream(socket.getOutputStream();String url=inputFromClient.readLine();jta.append(The Server has a request + * + url + * + n);if(url.startsWith(GET)/get the requests document nameif(url.indexOf(HTTP/) 4)String filename = url.substring(5, url.indexOf(HTTP/)-1); File file=new File(filename); if (file.exists() /if the file exist in the server jta.append(file can be find! + n); jta.append(MultiThreadServer is working now! + n); DataInputStream localfiles = new DataInputStream(new FileInputStream(file); int n = localfiles.available(); byte buf = new byte1024; while(n = localfiles.read(buf) = 0) outputToClient.write(buf, 0, n);/start send with buf0, send n bytes /read the file and sent it to the client else if(url.indexOf(HTTP/) = 6) /if user doesnt input the file name, send default web page jta.append(Dont konw send which files, send defalut messenges! + n); DataInputStream localfiles = new DataInputStream(new FileInputStream(index.txt); int n = localfiles.available(); byte buf = new byte1024; while(n = localfiles.read(buf) = 0) outputToClient.write(buf, 0, n);/start send with buf0, send n bytes else /if the request file didnt exist jta.append(囧rzSorry!There is no file with the requested name! + n); DataInputStream localfiles = new DataInputStream(new FileInputStream(404notfound.htm); int n = localfiles.available(); byte buf = new byte1024; while(n = localfiles.read(buf) = 0) outputToClient.write(buf, 0,