問題:http請求到了服務器端變成了什麼?
我們啓動以下我們的服務端程序,然後通過瀏覽器請求一下我們的服務器。
package com.zlyx.easy.server;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;
public class MainServer {
/**
* server port
*/
private static int port = 8080;
public static void main(String[] args) throws IOException {
ServerSocket ss = null;
try {
ss = new ServerSocket(port);
while (true) {
Socket socket = ss.accept();
while (true) {
BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
while (true) {
String msg = reader.readLine();
if (msg != null) {
System.out.println(msg);
}
}
}
}
} catch (IOException e) {
e.printStackTrace();
} finally {
ss.close();
}
}
}
在瀏覽器地址欄輸入http://localhost:8080/ 後回車,然後我們的控制檯輸出了一些東西:
GET是請求方式,/是請求地址,HTTP/1.1是http版本號。既然可以拿到這些東西,那我們就可以做一些事情了。我們對代碼做以下修改:
package com.zlyx.easy.server;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Arrays;
public class MainServer {
/**
* server port
*/
private static int port = 8080;
public static void main(String[] args) throws IOException {
ServerSocket ss = null;
try {
ss = new ServerSocket(port);
while (true) {
Socket socket = ss.accept();
while (true) {
BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
while (true) {
String msg = reader.readLine();
if (msg != null && !"".equals(msg)) {
if (msg.contains(":")) {
System.out.println("請求參數: " + msg.substring(0, msg.indexOf(":")));
System.out.println("請求值: " + msg.substring(msg.indexOf(":")));
} else {
String[] httpInfos = msg.split(" ");
System.out.println(Arrays.toString(httpInfos));
System.out.println("請求方式: " + httpInfos[0]);
System.out.println("請求地址:" + httpInfos[1]);
System.out.println("http版本 :" + httpInfos[2]);
}
}
}
}
}
} catch (IOException e) {
e.printStackTrace();
} finally {
ss.close();
}
}
}
啓動後重新請求,控制檯輸出如下:
下一篇博客,我們將基於TCP服務端能識別HTTP請求實現一個簡單的服務器功能