添加依赖：
<dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>2.0.0</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.10</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-freemarker</artifactId> </dependency>
配置数据源信息application.yml：
spring: datasource: driver-class-name: com.mysql.jdbc.Driver url: jdbc:mysql://127.0.0.1:3306/springboot?useUnicode=true&characterEncoding=utf8&serverTimezone=UTC username: root password: toor jpa: database: mysql show-sql: true generate-ddl: true
编写pojo对象，mapper接口，mapper映射文件：
pojo：
import lombok.Data; import javax.persistence.*; @Entity @Table(name = "user") @Data public class User { @Id @GeneratedValue(strategy = GenerationType.IDENTITY)// 主键自增长 private Integer id; private String username; private String password; private String name; }
mapper接口：
import com.hui.entity.User; import java.util.List; public interface UserMapper { List<User> getUserList(); }
mapper映射文件：
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.hui.mapper.UserMapper"> <select id="getUserList" resultType="com.hui.entity.User"> select * from user </select> </mapper>
配置MyBatis包扫描信息：
在主启动类上添加@MapperScan
import org.mybatis.spring.annotation.MapperScan; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication @MapperScan({"com.hui.mapper"}) public class MainClass { public static void main(String[] args) { SpringApplication.run(MainClass.class,args); } }
编写Controller以测试代码：
import com.hui.dao.UserDao; import com.hui.entity.User; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import java.util.List; @Controller @RequestMapping("/page") public class PageController { @Autowired private UserDao userDao; @RequestMapping(value = "/user",method = RequestMethod.GET) public String getUserList(Model model) { List<User> userList = userDao.findAll(); model.addAttribute("userList",userList); return "index"; } }
index.ftl模板信息：
<html> <head> <title>UserList</title> </head> <body> <table border="1px" cellspacing="0" cellpadding="0" width="100%"> <thead> <tr> <th>id</th> <th>用户名</th> <th>密码</th> <th>姓名</th> </tr> </thead> <tbody> <#list userList as user> <tr style="text-align: center"> <td>${user.id}</td> <td>${user.username}</td> <td>${user.password}</td> <td>${user.name}</td> </tr> </#list> </tbody> </table> </body> </html>
请求后台接口，查看效果如下：
