<servlet>
<servlet-name>HelloServlet</servlet-name>
<servlet-class>com.example.HelloServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloServlet</servlet-name>
<url-pattern>/hello</url-pattern>
</servlet-mapping>
package com.example;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
public class HelloServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
String name = request.getParameter("name");
response.setContentType("text/html");
response.getWriter().println("<h1>Hello, " + name + "!</h1>");
}
}
jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE html>
<html>
<head>
<title>Hello Page</title>
</head>
<body>
<form action="hello" method="GET">
<label for="name">Name:</label>
<input type="text" id="name" name="name"><br><br>
<input type="submit" value="Submit">
</form>
<br>
<p>${param.name}</p>
</body>
</html>
