Java 技术篇 - 前端浏览器发送一次url请求后端ServerSocket接收到两次请求原因及解决方法，GET /favicon.ico HTTP/1.1问题处理

package com.test.test;
import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;
public class SocketTest {
    public static void main(String[] args) throws IOException {
        /*
         作用：接收浏览器的请求并响应
        */
        // 创建服务，端口设置为10010
        ServerSocket server = new ServerSocket(10010);
        int k = 0;
        while(true) {
            // 阻塞式连接，当接收请求前保持阻塞
            Socket socket_client = server.accept();
            // 获取输入流
            InputStream in_put = socket_client.getInputStream();
            // 制作响应报文
            StringBuffer response = new StringBuffer();
            // 读取请求内容
            BufferedReader input = new BufferedReader(new InputStreamReader(in_put,"GBK"));
            String url = input.readLine();
            if(url != null) {
                String url_new = java.net.URLDecoder.decode(url, "UTF-8");
                k = k + 1;
                System.out.println("\n循环次数：" + k);
                System.out.println(url_new);
            }
            // 响应头部
            String response_head = "HTTP/1.1 200 OK\r\n" +
                    "Content-type:text/html\r\n\r\n";
            // 响应主体
            String response_body = "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\">" +  // 解决乱码问题
                    "<link rel=\"shortcut icon\" href=\"https://g.csdnimg.cn/static/logo/favicon32.ico\" type=\"image/x-icon\" />" +
                    "<style>body{font-family:\"黑体\"}</style>" +
                    "欢迎来到小蓝枣的博客<br>" +
                    "Welcome to xiaolanzao's blog!";
            response.append(response_head + response_body);
            // 获取输出流
            OutputStream out_put = socket_client.getOutputStream();
            // 将响应数据传给输出流
            out_put.write(response.toString().getBytes());
            // 关闭创建的对象
            out_put.close();
            in_put.close();
            socket_client.close();
        }
    }
}