java tomcat服务器_java-模拟tomcat服务器

￡神魔★判官ぃ 2022-10-23 14:30 17阅读 0赞

模拟tomcat服务器端代码示例:

package cd.itcast.day5;

import java.io.BufferedOutputStream;

import java.io.BufferedReader;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.OutputStream;

import java.net.ServerSocket;

import java.net.Socket;

import java.util.Date;

public class HttpServerDemo \{

public static void main(String\[\] args) \{

(new HttpServer()).run();

public static class HttpServer \{

public void run() \{

String filePath = "D:\\\\Java\\\\apache-tomcat-6.0.35\\\\webapps\\\\ROOT";

ServerSocket serverSocket = null;

try \{

serverSocket = new ServerSocket(8888);

// 开启线程，接收客户端请求.

while (true) \{

Socket socket = serverSocket.accept();

Thread thread = new Thread(new MyHttpServerThread(socket,

filePath));

thread.start();

\} catch (IOException e2) \{

e2.printStackTrace();

public static class MyHttpServerThread implements Runnable \{

String filePath = null;

private Socket socket = null;

private File file = null;

public MyHttpServerThread(Socket socket, String filePath) \{

this.filePath = filePath;

this.socket = socket;

@Override

public void run() \{

// 读取客户端数据

BufferedReader request = null;

// 处理客户端数据并返回.

BufferedOutputStream response = null;

try \{

// System.out.println(socket.getInetAddress().getHostAddress()

// + " 连接到服务器.");

InputStream inputStream = socket.getInputStream();

OutputStream outputStream = socket.getOutputStream();

request = new BufferedReader(new InputStreamReader(inputStream));

response = new BufferedOutputStream(outputStream);

// 读取Http头信息行:GET /index.html HTTP/1.1

String httpHead = request.readLine();

if (httpHead != null) \{

String\[\] arr = httpHead.split(" ");

if (arr.length == 3

&& ("GET".equals(arr\[0\]) || "POST".equals(arr\[0\]))

&& "HTTP/1.1".equals(arr\[2\])) \{

// 获取要访问的文件.

if ("/".equals(arr\[2\])) \{

file = new File(filePath, "/index.html");

\} else \{

file = new File(filePath, arr\[1\]);

if (file.exists() && file.isFile()) \{

responseRequest(response);

\} else \{

System.out.println("请求的页面：" + arr\[1\] + " 不存在！");

\} else \{

System.out.println("客户端请求非法:" + arr\[0\]);

\} else \{

System.out.println("未发现客户端请求或请求有误！");

\} catch (Exception e) \{

e.printStackTrace();

\} finally \{

if (request != null) \{

try \{

request.close();

\} catch (IOException e1) \{

e1.printStackTrace();

if (response != null) \{

try \{

response.close();

\} catch (IOException e) \{

e.printStackTrace();

if (socket != null) \{

try \{

socket.close();

\} catch (IOException e) \{

e.printStackTrace();

private void responseRequest(BufferedOutputStream response)

throws IOException, FileNotFoundException \{

// 返回给客户端服务器的Http头信息

response.write("HTTP/1.1 200 ok\\r\\n".getBytes());

response.write("Server: HttpTest Server/1.1\\r\\n".getBytes());

response.write("Content-Type: text/html\\r\\n".getBytes());

response.write(("Content-Length: 5866" + file.length() + "\\r\\n")

.getBytes());

response.write(("Date: " + new Date() + "\\r\\n").getBytes());

// 与实体部分以空行隔开.

response.write("\\r\\n".getBytes());

FileInputStream fis = new FileInputStream(file);

byte\[\] buff = new byte\[1024\];

int len = 0;

while ((len = fis.read(buff)) != -1) \{

response.write(buff, 0, len);

response.flush();

fis.close();

客户端http请求模拟示例：

package cd.itcast.day5;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import java.net.Socket;

import java.net.UnknownHostException;

public class HttpClientDemo \{

public static void main(String\[\] args) \{

BufferedWriter out = null;

BufferedReader in = null;

try \{

Socket socket = new Socket("127.0.0.1", 8888);

out = new BufferedWriter(new OutputStreamWriter(

socket.getOutputStream()));

in = new BufferedReader(new InputStreamReader(

socket.getInputStream()));

//发送Http头信息到服务器.请求页面为httptest.html.

out.write("GET /httptest.html HTTP/1.1\\r\\n");

out.write("Host: localhost\\r\\n");

out.newLine();

out.flush();

//获取服务器返回内容.

String line = null;

while ((line = in.readLine()) != null) \{

System.out.println(line);

\} catch (UnknownHostException e) \{

e.printStackTrace();

\} catch (IOException e) \{

e.printStackTrace();

\} finally \{

if (in != null) \{

try \{

in.close();

\} catch (IOException e) \{

e.printStackTrace();

if (out != null) \{

try \{

out.close();

\} catch (IOException e) \{

e.printStackTrace();

java tomcat服务器_java-模拟tomcat服务器

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