AAAjavaweb复习

qyj-ks / 2024-06-11 / 原文

package com.xxxx.servlet;

import jakarta.servlet.*;
import jakarta.servlet.http.*;
import jakarta.servlet.annotation.*;

import java.io.IOException;
/*创建Servlet类*/
@WebServlet(name = "TestServlet01", value = "/TestServlet01")
public class TestServlet01 extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    }
}


package com.xxxx.servlet;

public class Student {
    private String name;
    private int age;
    private String sex;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }
}


<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>学生信息</title>
</head>
<body>
<jsp:useBean id="student" class="com.xxxx.Student"></jsp:useBean>
<jsp:setProperty name="student" property="name" value="小明"></jsp:setProperty>
<jsp:setProperty name="student" property="age" value="18"></jsp:setProperty>
<jsp:setProperty name="student" property="sex" value="男"></jsp:setProperty>
<div>
    <ul>
        <li>
            姓名：<jsp:setProperty name="student" property="name"></jsp:setProperty>
        </li>
        <li>
            年龄：<jsp:setProperty name="student" property="age"></jsp:setProperty>
        </li>
        <li>
            性别：<jsp:setProperty name="student" property="sex"></jsp:setProperty>
        </li>
    </ul>
</div>
</body>
</html>

3:
package com.xxxx.servlet;

import jakarta.servlet.*;
import jakarta.servlet.annotation.*;

import java.io.IOException;
import java.io.PrintWriter;

/*拦截Myfilter程序*/
@WebFilter(filterName = "MyFilter")
public class MyFilter implements Filter {
    public void init(FilterConfig config) throws ServletException {
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws ServletException, IOException {
        PrintWriter out = response.getWriter();
        out.write("Hello MyFilter");
    }

    public void destroy() {
    }
}