在springboot中不推荐视图层使用jsp展示，但是人们以前已经习惯使用jsp，所以对jsp也有支持，但是是解耦性的。也就是说并没有像其他组件一样直接集成到启动器中，所以像jsp引擎之类的需要额外在pom文件中引入坐标
1.pom.xml
<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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.10.RELEASE</version>
</parent>
<groupId>com.mr.li</groupId>
<artifactId>springboot_003</artifactId>
<version>0.0.1-SNAPSHOT</version>
<properties>
<java.version>1.7</java.version>
</properties>
<dependencies>
<!-- 添加web启动器 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- springboot不推荐视图层用jsp展示，但考虑到很多人使用jsp习惯了，所以也支持，不过没在web启动器中集成 -->
<!-- jstl：servlet的标签库 -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<!-- jasper:tomcat提供的jsp引擎 -->
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
</dependencies>
</project>
2.启动类
package com.mr.li;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class App {
public static void main(String[] args) {
SpringApplication.run(App.class, args);
}
}
3.实体类
package com.mr.li.pojo;
public class User {
private int id;
private String name;
private int age;
public User(int id, String name, int age) {
super();
this.id = id;
this.name = name;
this.age = age;
}
public User() {
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
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;
}
}
4.jsp视图解析器配置：application.properties
#访问controller方法返回值加的前缀，相当于springmvc项目中的视图解析器的配置
spring.mvc.view.prefix=/WEB-INF/jsp/
#访问controller方法返回值的后缀
spring.mvc.view.suffix=.jsp
5.controller
package com.mr.li.controller;
import java.util.ArrayList;
import java.util.List;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import com.mr.li.pojo.User;
@Controller
public class MyController {
@RequestMapping("/show")
public String show(Model model) {
//生成jsp页面需要展示的数据源
List<User> list = new ArrayList<User>();
list.add(new User(1, "张三", 15));
list.add(new User(2, "李四", 16));
list.add(new User(3, "王五", 17));
//这里前面的list是在jsp中使用EL表达式所使用的名称
model.addAttribute("list", list);
//这里返回的是jsp页面名称，前后缀在配置文件中
return "users";
}
}
6.user.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<table border="1" align="center" width="50%">
<tr>
<th>ID</th>
<th>Name</th>
<th>Age</th>
</tr>
<c:forEach items="${list }" var="user">
<tr>
<td>${user.id }</td>
<td>${user.name }</td>
<td>${user.age }</td>
</tr>
</c:forEach>
</table>
</body>
</html>
访问url: http://localhost:8080/show
项目结构：
原文地址：https://www.cnblogs.com/li-yan-long/p/10777047.html
时间： 2024-10-10 01:55:55