核心操作：
① socket解除阻塞时为新请求进入，使用线程解决多请求并发问题
② IO流的处理：客户端路径获取使用字符流，服务端响应给浏览器使用字节流
③ 响应行、响应头、响应正文的处理(遵循HTTP协议)，使自写服务器可以正确被浏览器解析响应的内容
源码示例：
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| public class MyTomcatServer {
public static void main(String[] args) {
try {
ServerSocket serverSocket = new ServerSocket(8080);
while (true) {
Socket socket = serverSocket.accept();
new Thread(() -> service(socket)).start();
}
} catch (Exception e) {
e.printStackTrace();
}
}
public static void service(Socket socket) {
try {
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
String line = bufferedReader.readLine();
String[] requestInfos = line.split(" ");
String requestURL = requestInfos[1];
System.out.println(requestURL);
int length = "/demo/".length();
requestURL = requestURL.substring(length);
BufferedInputStream bis = new BufferedInputStream(new FileInputStream(requestURL));
BufferedOutputStream bos = new BufferedOutputStream(socket.getOutputStream());
bos.write("HTTP/1.1 200 OK\r\n".getBytes());
bos.write("Content-Type:text/html\r\n".getBytes());
bos.write("\r\n".getBytes());
int len = -1;
byte[] bys = new byte[8192];
while ((len = bis.read(bys)) != -1) {
bos.write(bys, 0, len);
}
bis.close();
bos.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
|
页面测试：
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| <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>主页</title>
</head>
<body>
<h2>首页</h2>
<img src="001.jpg" alt="图片1" width="300px">
<img src="002.jpg" alt="图片2" width="300px">
</body>
</html>
|
