Spring Boot+Mybatis+thymeleaf 整合
CREATE TABLE user_tb (
userid int(11) NOT NULL AUTO_INCREMENT,
username varchar(255) DEFAULT NULL,
department varchar(255) DEFAULT NULL,
classroom int(11) DEFAULT NULL,
PRIMARY KEY (userid)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;
INSERT INTO user_tb VALUES ('1', '周杰伦', '音乐系', '5');
INSERT INTO user_tb VALUES ('2', '张无忌', '武当派', '1');
INSERT INTO user_tb VALUES ('3', '赵敏', '蒙古族', '3');
二、创建项目
<table border="1" cellpadding="1" cellspacing="1"><tbody><tr><td colspan="2">1、创建项目</td></tr><tr><td><img alt="" height="839" src="https://img-blog.csdnimg.cn/20200812160921673.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2gyNTAzNjUyNjQ2,size_16,color_FFFFFF,t_70" width="1200"></td><td><img alt="" height="839" src="https://img-blog.csdnimg.cn/20200812161002682.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2gyNTAzNjUyNjQ2,size_16,color_FFFFFF,t_70" width="1200"></td></tr><tr><td colspan="2">2、最终项目结构</td></tr><tr><td colspan="2"><p style="text-align:center;"><img alt="" height="546" src="https://img-blog.csdnimg.cn/20200812165046254.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2gyNTAzNjUyNjQ2,size_16,color_FFFFFF,t_70" width="263"></p></td></tr></tbody></table>
三、添加 pom.xml
里面引入了本次整合所需要的所有依赖包，包括 Mybatis、thymeleaf、lombok。
<?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>org.example</groupId>
<artifactId>ShiroDemo</artifactId>
<version>1.0-SNAPSHOT</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.6.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.4</version>
</dependency>
</dependencies>
</project>
四、配置 application.yml
也就是 application.properties，只是格式不同而已，个人觉得 yml 格式更直观清晰。
spring:
mysql 数据源
datasource:
url: jdbc:mysql://localhost/shiro_demo?useUnicode=true&characterEncoding=UTF-8
username: root
password: root
driverClassName: com.mysql.jdbc.Driver
mybatis:
mapper-locations: classpath:mapper/*.xml
type-aliases-package: com.zyy.model
五、编写代码
user.java
因为使用了**@Data**注解，所以可以省略 get、set、toString···
package com.zyy.model;
import lombok.Data;
import java.io.Serializable;
import java.util.List;
/**
@ClassName User
@Author DoNg
@Date 2020/8/12 0012 10:58
@Description User
*/
@Data
public class User{
private Integer userid;
private String username;
private String department;
private Integer classroom;
}
UserMapper.xml? （在 resourses 目录下新建 mapper 文件夹，用于存放 xxxMapper.xml 文件）
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.zyy.mapper.UserMapper">
<select id="selectAllUser" resultType="com.zyy.model.User">
select * from user_tb
</select>
</mapper>
UserMapper.java
package com.zyy.mapper;
import com.zyy.model.User;
import org.apache.ibatis.annotations.Mapper;
import org.springframework.stereotype.Repository;
import java.util.List;
/**
@ClassName UserMapper
@Author DoNg
@Date 2020/8/12 0012 11:19
@Description UserMapper
*/
@Mapper
@Repository
public interface UserMapper {
List<User> selectAllUser();
}
UserService.java
package com.zyy.service;
import com.zyy.model.User;
import org.springframework.stereotype.Service;
import java.util.List;
/**
@ClassName UserService
@Author DoNg
@Date 2020/8/12 0012 11:51
@Description UserService
*/
public interface UserService {
List<
User> getAllUser();
}
UserServiceImpl.java
package com.zyy.service.impl;
import com.zyy.mapper.UserMapper;
import com.zyy.model.User;
import com.zyy.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
/**
@ClassName UserServiceImpl
@Author DoNg
@Date 2020/8/12 0012 11:52
@Description UserServiceImpl
*/
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UserMapper userMapper;
@Override
public List<User> getAllUser(){
return this.userMapper.selectAllUser();
}
}
UserController.java
package com.zyy.controller;
import com.zyy.model.User;
import com.zyy.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import java.util.List;
/**
@ClassName UserController
@Author DoNg
@Date 2020/8/12 0012 11:33
@Description UserController
*/
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