Servlet 一个简单的表单转发功能的实现

最新推荐文章于 2022-07-13 04:07:12 发布

yaomyz

最新推荐文章于 2022-07-13 04:07:12 发布

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分类专栏： Servlet java 文章标签： java

本文链接：https://blog.youkuaiyun.com/qq_31785005/article/details/115586817

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Jsp页面

index.jsp

<%@page contentType="text/html; charset=UTF-8" language="java" %>
<html>
<head>
    <title>首页</title>
</head>
<body>
<h1>首页</h1>
<div style="text-align: center">
    <form action="${pageContext.request.contextPath}/dispatch" method="post">
        姓名：<input type="text" name="name"><br>
        技能：
        <input type="checkbox" name="skill" value="篮球">篮球
        <input type="checkbox" name="skill" value="Java">Java
        <input type="checkbox" name="skill" value="C++">C++
        <br>
        <input type="submit">
    </form>
</div>
</body>
</html>

success.jsp

<%--
  Created by IntelliJ IDEA.
  User: PC
  Date: 2021/4/10
  Time: 23:40
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>转发成功</title>
</head>
<body>
<h1>转发成功</h1>
</body>
</html>

LoginServlet

package org.example;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Arrays;

public class DispatchServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        super.doPost(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.setCharacterEncoding("utf-8");

        String username = req.getParameter("name");
        String[] skills = req.getParameterValues("skill");

        System.out.println("================================");
        System.out.println(username);
        System.out.println(Arrays.toString(skills));
        System.out.println("================================");

        req.getRequestDispatcher("/success.jsp").forward(req,resp);
        resp.setCharacterEncoding("utf-8");
    }
}

web.xml

<servlet>
        <servlet-name>dispatchServlet</servlet-name>
        <servlet-class>org.example.DispatchServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatchServlet</servlet-name>
        <url-pattern>/dispatch</url-pattern>
    </servlet-mapping>