regist.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<form action="/Demo3" method="post">
<input type="text" name="username" placeholder="请输入账号">
<input type="password" name="pwd" placeholder="请输入密码">
<input type="submit" value="注册">
</form>
</body>
</html>
Demo3.java
package com.example.demo1;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.annotation.*;
import java.io.BufferedReader;
import java.io.IOException;
@WebServlet(name = "Demo3", value = "/Demo3")
public class Demo3 extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//获取请求消息体--请求参数
//1.获取字节流
BufferedReader reader = request.getReader();
//2.读取数据
String line=null;
while((line=reader.readLine())!=null){
System.out.println(line);
}
}
}
运行程序查看控制台结果报错啦[[TldScanner.scanJars 至少有一个JAR被扫描用于TLD但尚未包含TLD。 为此记录器启用调试日志记录]]
再次重新访问页面并提交数据
![[Pasted image 20220102194219.png]]
结果页面还出现了乱码解决方案：问题2[[解决IDEA乱码问题]]
再次运行查看结果：
![[Pasted image 20220102194159.png]]
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