问题:http请求到了服务器端变成了什么?
我们启动以下我们的服务端程序,然后通过浏览器请求一下我们的服务器。
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();
}
}
}
在浏览器地址栏输入http://localhost:8080/ 后回车,然后我们的控制台输出了一些东西:
GET是请求方式,/是请求地址,HTTP/1.1是http版本号。既然可以拿到这些东西,那我们就可以做一些事情了。我们对代码做以下修改:
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("请求参数: " + msg.substring(0, msg.indexOf(":")));
System.out.println("请求值: " + msg.substring(msg.indexOf(":")));
} else {
String[] httpInfos = msg.split(" ");
System.out.println(Arrays.toString(httpInfos));
System.out.println("请求方式: " + httpInfos[0]);
System.out.println("请求地址:" + httpInfos[1]);
System.out.println("http版本 :" + httpInfos[2]);
}
}
}
}
}
} catch (IOException e) {
e.printStackTrace();
} finally {
ss.close();
}
}
}
启动后重新请求,控制台输出如下:
下一篇博客,我们将基于TCP服务端能识别HTTP请求实现一个简单的服务器功能