1. Import the required package dependencies
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.1</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.3</version>
</dependency>
2. Configure the jsp file
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<html>
<body>
<h2>登录页面</h2>
<form action="${pageContext.request.contextPath}/s1">
<input type="text" name="username">
<input type="password" name="password">
<input type="submit">
</form>
</body>
</html>
3. Write servlet
<servlet>
<servlet-name>s1</servlet-name>
<servlet-class>RequestTest</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>s1</servlet-name>
<url-pattern>/s1</url-pattern>
</servlet-mapping>
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
//获取请求参数
String username = req.getParameter("username");
String password = req.getParameter("password");
System.out.println(username);
System.out.println(password);
System.out.println("进入了这个请求");
}
4. Configure tomcat and run