Spring Boot入门第五天：使用JSP

2023-08-24 11:38:34

1.在pom.xml文件中添加依赖：

        <!-- Servlet依赖 -->

        <dependency>

            <groupId>javax.servlet</groupId>

            <artifactId>javax.servlet-api</artifactId>
            <scope>provided</scope>

        </dependency>

        <!-- jstl -->

        <dependency>

            <groupId>javax.servlet</groupId>

            <artifactId>jstl</artifactId>

        </dependency>

        <!-- Jasper是tomcat中使用的JSP引擎 -->

        <dependency>

            <groupId>org.apache.tomcat.embed</groupId>

            <artifactId>tomcat-embed-jasper</artifactId>
            <scope>provided</scope>

        </dependency>

2.配置属性：在application.properties文件添加如下属性：

# JSP页面默认前缀目录

spring.mvc.view.prefix=/WEB-INF/jsp/

# JSP响应页面默认后缀

spring.mvc.view.suffix=.jsp

其实完全可以省略这一步骤。

3.编写Controller类：

package com.yws710.springboot.demo1.controller;

import com.yws710.springboot.demo1.domain.User;

import com.yws710.springboot.demo1.service.UserService;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.servlet.ModelAndView;

import java.util.List;

/**

 * User控制器类

 */

@Controller

@RequestMapping("/user")

public class UserController {

    private final UserService userService;

    private static final Logger LOGGER = LoggerFactory.getLogger(UserController.class);

    @Autowired

    public UserController(UserService userService) {

        this.userService = userService;

    }

    @RequestMapping("/list")

    public ModelAndView userList() throws Exception {

        LOGGER.warn("您执行了UserController类中的userList()方法。");

        ModelAndView mv = new ModelAndView();

        List<User> userList = userService.userList();

        mv.addObject("userList", userList);

        mv.setViewName("/user/list");

        return mv;

    }

}

4.创建jsp文件。WEB-INF/jsp/user/list.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>

<%

    String path = request.getContextPath();

    String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

%>

<!DOCTYPE html>

<html>

<head>

    <meta charset="utf-8">

    <base href="<%=basePath%>">

    <title>用户列表</title>

    <link rel="stylesheet" href="/css/main.css" />

</head>

<body>

    <table>

        <thead>

        <tr>

            <th>ID</th>

            <th>姓名</th>

            <th>生日</th>

            <th>薪资</th>

        </tr>

        </thead>

        <tbody>

        <c:forEach items="${userList}" var="user" varStatus="status">

            <tr>

                <td>${user.id}</td>

                <td>${user.name}</td>

                <td><fmt:formatDate value="${user.birthday}" pattern="yyyy-MM-dd HH:mm:ss"/></td>

                <td>${user.salary}</td>

            </tr>

        </c:forEach>

        </tbody>

    </table>

</body>

</html>

5.启动项目，查看运行结果：

附录：完整pom.xml文件配置

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0"

         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <groupId>com.yws710.springboot</groupId>

    <artifactId>demo1</artifactId>

    <version>1.0-SNAPSHOT</version>

    <packaging>war</packaging>

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>1.5.4.RELEASE</version>

    </parent>

    <dependencies>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-web</artifactId>

        </dependency>

        <!-- spring-data-jpa -->

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-data-jpa</artifactId>

        </dependency>

        <!-- Servlet依赖 -->

        <dependency>

            <groupId>javax.servlet</groupId>

            <artifactId>javax.servlet-api</artifactId>

        </dependency>

        <!-- jstl -->

        <dependency>

            <groupId>javax.servlet</groupId>

            <artifactId>jstl</artifactId>

        </dependency>

        <!-- Jasper是tomcat中使用的JSP引擎 -->

        <dependency>

            <groupId>org.apache.tomcat.embed</groupId>

            <artifactId>tomcat-embed-jasper</artifactId>

        </dependency>

        <!-- mysql驱动 -->

        <dependency>

            <groupId>mysql</groupId>

            <artifactId>mysql-connector-java</artifactId>

        </dependency>

        <dependency>

            <groupId>com.alibaba</groupId>

            <artifactId>druid</artifactId>

            <version>1.0.26</version>

        </dependency>

        <dependency>

            <groupId>com.alibaba</groupId>

            <artifactId>fastjson</artifactId>

            <version>1.2.35</version>

        </dependency>

    </dependencies>

</project>

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