使用Spring Boot+MyBatis框架做查询操作的示例代码

#连接数据库
spring.datasource.url=jdbc:mysql://localhost:3306/smbms
spring.datasource.username=root
spring.datasource.password=1234
spring.datasource.driverClassName=com.mysql.jdbc.Driver
#引入mybatis的配置文件
mybatis:
  mybatis.mapper-locations=classpath:mapper/*.xml
  mybatis.type-aliases-package=com.example.sprboot.pojo

<?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>com.example</groupId>
  <artifactId>springboot</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>springboot</name>
  <description>Demo project for Spring Boot</description>

  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.5.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
  </parent>
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
  </properties>
  <dependencies>
    <!--添加web依赖-->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <!--引入spring boot包-->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
    </dependency>
    <!-- Spring-Mybatis -->
    <dependency>
      <groupId>org.mybatis.spring.boot</groupId>
      <artifactId>mybatis-spring-boot-starter</artifactId>
      <version>1.3.0</version>
    </dependency>
    <!-- MySQL -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
    </dependency>
    <!--使用json对象-->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>fastjson</artifactId>
      <version>1.2.49</version>
    </dependency>
    <!--使用thymeleaf标签-->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-thymeleaf</artifactId>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
    </plugins>
  </build>
</project>

@Repository
public interface UserMapper {
  List<User> getList();
}

public interface UserService {
  List<User> getList();
}

@Service
public class UserServiceImpl implements UserService {
  @Resource
  private UserMapper userMapper;
  @Override
  public List<User> getList() {
    return userMapper.getList();
  }
}

<select id="getList" resultType="User">
  select * from smbms_user
</select>

<table>
  <th>工号</th>
  <th>用户名</th>
  <th>姓名</th>
  <th>性别</th>
  <th>生日</th>
  <th>电话</th>
  <th>地址</th>
  <th>创建时间</th>
  <tr th:each="user : ${users}">
    <td th:text="${user.id}"></td>
    <td th:text="${user.userCode}"></td>
    <td th:text="${user.userName}"></td>
    <td th:text="${user.gender}"></td>
    <td th:text="${user.birthday}"></td>
    <td th:text="${user.phone}"></td>
    <td th:text="${user.address}"></td>
    <td th:text="${user.createdBY}"></td>
  </tr>
</table>

@Controller
public class UserController {
  @Resource
  private UserService userService;
@RequestMapping("/")
  public String getStuinforList(HttpServletRequest request, Model model){
    List<User> list=userService.getList();
    model.addAttribute("users",list);
    System.out.println(list);
    return "/index.html";
  }
}