概 述
Spring Boot工程集成 MyBatis來實現 MySQL訪問的示例我們見過很多，而最近用到了微軟的 SQL Server數據庫，於是本文則給出一個完整的 Spring Boot + MyBatis + SQL Server 的工程示例。
注： 本文首發於 My Personal Blog：CodeSheep·程序羊，歡迎光臨 小站
工程搭建
- 新建 Spring Boot工程
pom.xml中添加 MyBatis和 SQL Server相關的依賴
<!--for mybatis-->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.2</version>
</dependency>
<!--for SqlServer-->
<dependency>
<groupId>com.microsoft.sqlserver</groupId>
<artifactId>sqljdbc4</artifactId>
<version>4.0</version>
</dependency>
復制代碼- 配置
application.properties
這里同樣主要是對於 MyBatis 和 SQL Server連接相關的配置
server.port=89
# mybatis 配置 mybatis.type-aliases-package=cn.codesheep.springbt_mybatis_sqlserver.entity mybatis.mapper-locations=classpath:mapper/*.xml mybatis.configuration.map-underscore-to-camel-case=true ## ------------------------------------------------- ## SqlServer 配置 spring.datasource.url=jdbc:sqlserver://xxxx:1433;databasename=MingLi spring.datasource.driver-class-name=com.microsoft.sqlserver.jdbc.SQLServerDriver spring.datasource.username=xxxx spring.datasource.password=xxxx 復制代碼建立 SQL Server數據表和實體類
- 首先在 SQL Server數據庫中新建數據表
user_test作為測試用表
DROP TABLE [demo].[user_test]
GO
CREATE TABLE [dbo].[user_test] (
[user_id] int NOT NULL ,
[user_name] varchar(50) NOT NULL ,
[sex] tinyint NOT NULL ,
[created_time] varchar(50) NOT NULL
)
GO
復制代碼- 然后在我們的工程中對應建立的
User實體類
其字段和實際數據表的字段一一對應
public class User {
private Long userId;
private String userName;
private Boolean sex;
private String createdTime;
public Long getUserId() { return userId; } public void setUserId(Long userId) { this.userId = userId; } public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName; } public Boolean getSex() { return sex; } public void setSex(Boolean sex) { this.sex = sex; } public String getCreatedTime() { return createdTime; } public void setCreatedTime(String createdTime) { this.createdTime = createdTime; } } 復制代碼Mybatis Mapper映射配置
- MyBatis映射配置的 XML文件如下：
<?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="cn.codesheep.springbt_mybatis_sqlserver.mapper.UserMapper"> <resultMap id="userMap" type="cn.codesheep.springbt_mybatis_sqlserver.entity.User"> <id property="userId" column="user_id" javaType="java.lang.Long"></id> <result property="userName" column="user_name" javaType="java.lang.String"></result> <result property="sex" column="sex" javaType="java.lang.Boolean"></result> <result property="createdTime" column="created_time" javaType="java.lang.String"></result> </resultMap> <select id="getAllUsers" resultMap="userMap"> select * from user_test </select> <insert id="addUser" parameterType="cn.codesheep.springbt_mybatis_sqlserver.entity.User"> insert into user_test ( user_id, user_name, sex, created_time ) values ( #{userId}, #{userName}, #{sex}, #{createdTime} ) </insert> <delete id="deleteUser" parameterType="cn.codesheep.springbt_mybatis_sqlserver.entity.User"> delete from user_test where user_name = #{userName} </delete> </mapper> 復制代碼- 與此同時，這里也給出對應 XML的 DAO接口
public interface UserMapper {
List<User> getAllUsers();
int addUser( User user );
int deleteUser( User user );
}
復制代碼為了試驗起見，這里給出了 增 / 刪 / 查 三個數據庫操作動作。
編寫 Service 和測試Controller
- 上面這些准備工作完成之后，接下來編寫數據庫 CRUD的 Service類
@Service
@Primary
public class UserServiceImpl implements IUserService {
@Autowired
private UserMapper userMapper;
@Override
public List<User> getAllUsers() { return userMapper.getAllUsers(); } @Override public int addUser(User user) { SimpleDateFormat form = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); user.setCreatedTime( form.format(new Date()) ); return userMapper.addUser( user ); } @Override public int deleteUser(User user) { return userMapper.deleteUser( user ); } } 復制代碼這里的 Service功能同樣主要關於數據表的 增 / 刪 / 查 三個數據庫操作動作。
- 對照着上面的Service，我們編寫一個對應接口測試的Controller
@RestController
public class UserController {
@Autowired
private IUserService userService;
@RequestMapping(value = "/getAllUser", method = RequestMethod.GET) public List<User> getAllUser() { return userService.getAllUsers(); } @RequestMapping(value = "/addUser", method = RequestMethod.POST) public int addUser( @RequestBody User user ) { return userService.addUser( user ); } @RequestMapping(value = "/deleteUser", method = RequestMethod.POST) public int deleteUser( @RequestBody User user ) { return userService.deleteUser( user ); } } 復制代碼實驗測試
- 插入數據
依次用 POSTMAN通過 Post /addUser接口插入三條數據：
{"userId":1,"userName":"劉能","sex":true} {"userId":2,"userName":"趙四","sex":false} {"userId":3,"userName":"王大拿","sex":true} 復制代碼插入完成后去 SQL Server數據庫里看一下數據插入情況如下：
- 查詢數據
調用 Get /getAllUser接口，獲取剛插入的幾條數據
- 刪除數據
調用 Post /deleteUser接口，可以通過用戶名來刪除對應的用戶
后 記
作者：CodeSheep
鏈接：https://juejin.im/post/5c1837ff6fb9a049d1320d76