一、概念
- jsp应该尽量避免使用，原因如下：
- jsp只能打包为：war格式，不支持jar格式，只能在标准的容器里面跑（tomcat，jetty都可以）
- 内嵌的Jetty目前不支持JSPs
- Undertow不支持jsps
- jsp自定义错误页面不能覆盖spring boot 默认的错误页面
二、案例
2.1 引入maven依赖
<dependencies> <!-- 除去logback支持 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> <exclusions> <exclusion> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-logging</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <!-- 使用log4j2，该包paren标签中已经依赖 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-log4j2</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> </dependency> <!-- 引入freemarker包 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-freemarker</artifactId> </dependency> <!-- 引入jsp --> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> <scope>provided</scope> </dependency> <!-- 引入jstl--> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> </dependency> </dependencies>
-
jsp和jstl依赖必须都引入。
2.2 配置application.properties
#主配置文件，配置了这个会优先读取里面的属性覆盖主配置文件的属性
spring.profiles.active=dev
server.port=8888
logging.config=classpath:log4j2-dev.xml
spring.mvc.view.prefix: /WEB-INF/templates/
spring.mvc.view.suffix: .jsp
2.3 编写控制器
package com.shyroke.controller; import java.util.ArrayList; import java.util.List; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; @Controller @RequestMapping(value = "/index") public class IndexController { @RequestMapping(value = "/login") public ModelAndView index(ModelAndView modelAndView) { modelAndView.setViewName("index"); List<String> userList=new ArrayList<String>(); userList.add("admin"); userList.add("user1"); userList.add("user2"); modelAndView.addObject("userList", userList); return modelAndView; } }
2.4 index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib prefix="spring" uri="http://www.springframework.org/tags"%> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%> <!DOCTYPE html> <html> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <link href="/static/css/index.css" rel="stylesheet"> <script type="text/javascript" src="/static/jars/jquery-3.2.1.min.js"></script> <script type="text/javascript" src="/static//js/index.js"></script> </head> <body> <h2>首页<h2> <c:forEach items="${userList}" var="user"> userName: ${user}<br> </c:forEach> <button class="a">click me</button> </body> </html>
2.5 js和css
2.6 结果
