springboot整合视图层+持久层技术

男娘i 2022-12-18 06:57 187阅读 0赞

# 整合持久层技术 #

1.  整合jsp
2.  整合frameworker
3.  整合thymeleaf

## 整合jsp技术 ##

pom文件

<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>2.2.0.RELEASE</version>
      </parent>
      <groupId>com.pshdhx</groupId>
      <artifactId>01-springboot-view-jsp</artifactId>
      <version>0.0.1-SNAPSHOT</version>
      <properties>
      	<java.version>1.8</java.version>
      </properties>
      <dependencies>
      	<dependency>
      		<groupId>org.springframework.boot</groupId>
      		<artifactId>spring-boot-starter-web</artifactId>
      	</dependency>
      	<dependency>
      		<groupId>javax.servlet</groupId>
      		<artifactId>jstl</artifactId>
      	</dependency>
      	<dependency>
      		<groupId>org.apache.tomcat.embed</groupId>
      		<artifactId>tomcat-embed-jasper</artifactId>
      		<scope>provided</scope>
      		<version>9.0.8</version>
      	</dependency>
      </dependencies>
    </project>

配置文件application.properities

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

实体类User.java

package com.pshdhx.controller;
    
    public class User {
    	private String id;
    	private String userName;
    	private int age;
    	public String getId() {
    		return id;
    	}
    	public void setId(String id) {
    		this.id = id;
    	}
    	public String getUserName() {
    		return userName;
    	}
    	public void setUserName(String userName) {
    		this.userName = userName;
    	}
    	public int getAge() {
    		return age;
    	}
    	public void setAge(int age) {
    		this.age = age;
    	}
    	public User(String id, String userName, int age) {
    		super();
    		this.id = id;
    		this.userName = userName;
    		this.age = age;
    	}
    	
    }

控制层JSPController.java

package com.pshdhx.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;
    
    /**
     * 
     * @author ASUS
     *
     */
    @Controller
    public class JSPController {
    	/*
    	* 处理请求，产生数据
    	*/
    		@RequestMapping("/showUser")
    		public String showUser(Model model){
    			List<User> list = new ArrayList<>();
    			list.add(new User("1","张三",20));
    			list.add(new User("2","李四",22));
    			list.add(new User("3","王五",24));
    			//需要一个 Model 对象
    			model.addAttribute("list", list);
    			//跳转视图
    			return "userList";
    		}
    }

视图层userList.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
    <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>${user.userName }</td>
    				<td>${user.age }</td>
    			</tr>
    		</c:forEach>
    	</table>
    </body>
    </html>

主启动类App.java

package com.pshdhx;
    
    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);
    	}
    }

目录结构

![20201026115659410.png][]

访问地址：

[http://localhost:8080/showUser][http_localhost_8080_showUser]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3BzaGRoeA_size_16_color_FFFFFF_t_70][]

[20201026115659410.png]: /images/20221122/d835ed769a024d50a9734cf95a96be22.png
[http_localhost_8080_showUser]: http://localhost:8080/showUser
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3BzaGRoeA_size_16_color_FFFFFF_t_70]: /images/20221122/53446e8d615f499b890e89c4f06127e0.png