spring boot中使用jsp:
1.添加tomcat依赖和jsp支持
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
</dependency>
2.在application.yml中设置前缀和后缀
spring:
mvc:
view:
prefix: /jsp/
suffix: .jsp
3.在建一个jsp页面
<%--
Created by IntelliJ IDEA.
User: wish
Date: 2019/12/12
Time: 9:24
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h4>
欢迎光临,${name}
</h4>
</body>
</html>
4.建立controller进行页面跳页面
package com.webboot.controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
@RequestMapping("/PageJump")
public class PageJump {
@RequestMapping("/getIndex")
public String getIndex(ModelMap modelMap){
modelMap.put("name","王五");
return "index";
}
}
spring boot中使用thymeleaf
1.导入thymeleaf的依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
2.在application.yml中设置thymeleaf关闭缓存
spring:
thymeleaf:
cache: false
3.建立html页面
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
<meta charset="UTF-8">
<title>Title</title>
</meta>
</head>
<body>
<ul th:each="stu:${list}">
<li><span th:text="${stu.stuId}"></span><span th:text="${stu.stuName}"></span></li>
</ul>
</body>
</html>
4.通过controller进行页面跳转
package com.boot.controller;
import com.boot.entity.Student;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import java.util.ArrayList;
import java.util.List;
@Controller
public class StuController {
@RequestMapping("/getHtml")
public String getHtml(Model model){
Student student1 =new Student("李1",1);
Student student2 =new Student("李2",2);
Student student3 =new Student("李3",3);
List<Student> list = new ArrayList<>();
list.add(student1);
list.add(student2);
list.add(student3);
model.addAttribute("list",list);
System.out.println("123456");
return "show";
}
}
spring boot中使用jpa
1.导入jpa依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
2.在application.yml中配置数据库连接参数
##数据库四大连接参数
spring:
datasource:
driver-class-name: com.mysql.jdbc.Driver
url: jdbc:mysql://localhost:3306/invoicingsystem?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
username: root
password: 123456
3.dao层中的接口继承CrudRepository<object, object>
package com.boot.dao;
import com.boot.entity.Users;
import org.springframework.data.repository.CrudRepository;
/**
* 创建一个IUserDao继承CrudRepository
*/
public interface IUserDao extends CrudRepository<Users, Integer> {
}