SpringBoot整合mybatis

看到了一個項目裏什麼是字符串拼接的sql寫了一個插入語句，感覺快要崩潰了，然後還是使用了mybatis。做一個小的總結 ：

引入依賴

在pom文件引入mybatis-spring-boot-starter的依賴：

 <dependency>  
            <groupId>org.mybatis.spring.boot</groupId>  
            <artifactId>mybatis-spring-boot-starter</artifactId>  
            <version>1.3.0</version>  
  </dependency>  

引入數據庫連接依賴：

		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>druid</artifactId>
			<version>1.0.29</version>
		</dependency>

引入數據源

application.properties配置文件中引入數據源：

spring.datasource.url=jdbc:mysql://localhost:3306/test
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.jdbc.Driver

這樣，springboot就可以訪問數據了

具體實現

這篇文篇通過註解的形式實現。

創建實體

public class OrderGuest implements Serializable {

	private Long id;
	/**
	 * 訂單號
	 */
	private String orderId;
	/**
	 * 入住人-名
	 */
	private String fristName;
	/**
	 * 入住人-姓
	 */
	private String lastName;
	public Long getId() {
		return id;
	}
	public void setId(Long id) {
		this.id = id;
	}
	public String getOrderId() {
		return orderId;
	}
	public void setOrderId(String orderId) {
		this.orderId = orderId;
	}
	public String getFristName() {
		return fristName;
	}
	public void setFristName(String fristName) {
		this.fristName = fristName;
	}
	public String getLastName() {
		return lastName;
	}
	public void setLastName(String lastName) {
		this.lastName = lastName;
	}
	

Dao層

@Mapper
public interface OrderDao {

	/**
	 * 添加order_guest
	 * 
	 * @param name
	 * @param money
	 * @return
	 */
	@Insert("INSERT INTO order_guest (orderId, fristName, lastName) VALUES (#{orderId}, #{fristName}, #{lastName})")
	int insertOrderGuest(@Param("orderId") String orderId, @Param("fristName") String fristName,
			@Param("lastName") String lastName);

	/**
	 * 
	 * 添加 order_price
	 * 
	 * @return
	 */
	@Insert("INSERT INTO order_price (orderId, priceDay, roomPrice) VALUES (#{orderId}, #{priceDay}, #{roomPrice})")
	int insertOrderPrice(@Param("orderId") String orderid, @Param("priceDay") Date priceDay,
			@Param("roomPrice") BigDecimal roomPrice);

	/**
	 * 添加order_rateplan
	 * @param orderRatePlan
	 * @return
	 */
	@Insert("INSERT INTO order_rateplan ( `orderId`, `ratePlanName`, `ratePlanId`, `maxOccupancy`, `breakfastType`, `bedType`, "
			+ "`confirmType`, `cannelType`, `cannelPolicy`, `roomTypeId`, `roomTypeName`)"
			+ " VALUES (#{orderId},#{ratePlanName}, #{ratePlanId}, #{maxOccupancy}, #{breakfastType}, #{bedType}, #{confirmType},#{cannelType}, "
			+ "#{cannelPolicy}, #{roomTypeId},#{roomTypeName})"
			+ "")
	int insertOrderRateplan(OrderRatePlan orderRatePlan);
	
	@Update("UPDATE order_main SET orderState=#{orderState} where orderId=#{}")
	int updateOrderMainByOrderId(@Param("orderState")Integer orderState, @Param("orderId")String orderId);
	
	@Delete("delete from account where id = #{id}")
    int delete(int id);
    
	 @Select("select id, name as name, money as money from account")
    List<Account> findAccountList();
	
	 @Select("select id, name as name, money as money from account where id = #{id}")
    Account findAccount(@Param("id") int id);

}

可以用@param註解接收參數，也可以用一個對象自動對應如：

@Insert("INSERT INTO order_rateplan ( `orderId`, `ratePlanName`, `ratePlanId`, `maxOccupancy`, `breakfastType`, `bedType`, "
			+ "`confirmType`, `cannelType`, `cannelPolicy`, `roomTypeId`, `roomTypeName`)"
			+ " VALUES (#{orderId},#{ratePlanName}, #{ratePlanId}, #{maxOccupancy}, #{breakfastType}, #{bedType}, #{confirmType},#{cannelType}, "
			+ "#{cannelPolicy}, #{roomTypeId},#{roomTypeName})"
			+ "")
	int insertOrderRateplan(OrderRatePlan orderRatePlan);

service層

@Service
public class CreateReservationServiceImpl {

	@Autowired
	private OrderDao orderDao;

	
	public Integer inserOrderGuest(List<OrderGuest> orderGuestList) {
		Integer count = 0;
		for (int i = 0; i < orderGuestList.size(); i++) {
			OrderGuest orderGuest = orderGuestList.get(i);
			String orderId = orderGuest.getOrderId();
			String fristName = orderGuest.getFristName();
			String lastName = orderGuest.getLastName();
			Integer result = orderDao.insertOrderGuest(orderId, fristName, lastName);
			System.out.println("執行結果：" + result);
			if (result == 1) {
				count = count + 1;
			}
		}
		return count;
	}

}

controllern層

@Controller
public class CreateReservationController {

	@Autowired
	private CreateReservationServiceImpl createReservationServiceImpl;
	@Autowired
	private HotelPriceRuleCommon hotelPriceRuleCommon;

	public static String SERVRURL = "http://localhost:8081/ihotelmq/";

	@RequestMapping(value = "/testSql", method = RequestMethod.POST)
	@ResponseBody
	public String test() {
		List<OrderRatePlan> orderGuestList = new ArrayList<OrderRatePlan>();
		OrderRatePlan orderRatePlan = new OrderRatePlan();
		orderRatePlan.setOrderId("1903201614231191test");
		orderRatePlan.setRatePlanName("高級房(Superior Room)");
		orderRatePlan.setRatePlanId("100100100113");
		orderRatePlan.setMaxOccupancy(2);
		orderRatePlan.setBreakfastType("含早");
		orderRatePlan.setBedType("大牀");
		orderRatePlan.setConfirmType(0);
		orderRatePlan.setCannelType(0);
		orderRatePlan.setCannelPolicy("[{\"Amount\": 1774,\"FromDate\": \"2019-08-09 00:00:00\"}]");
		orderRatePlan.setRoomTypeId("1008");
		orderGuestList.add(orderRatePlan);
		createReservationServiceImpl.insertOrderRateplan(orderGuestList);
		return "success";

		}
	}

爲了方便需要配置日誌打印sql語句

application.properties中添加：

mybatis.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl

或者

logging.level.com.e100.hotelcore.Dao=DEBUG

這兩個配置都可以