SpringDataJpa调用存储过程

注：存储过程为sqlserver存储过程

1、存储过程

-- [WEB_Person_Login] @In_PersonNo='XX',@In_PassWord='XX'
-- =============================================
ALTER PROCEDURE [dbo].[WEB_Person_Login]
	-- Add the parameters for the stored procedure here
	 @In_PersonNo			VarChar(50)=''
	,@In_PassWord			VarChar(50)=''
	,@Return_Error			VarChar(50)='' out

AS

它需要传入两个参数，且返回值Return_Error

2、调用存储过程的两种方式

2.1、@NamedStoredProcedureQueries

<该注解下可以调用多个存储过程，如只有一个可以直接@NamedStoredProcedureQuery>

@Data
@Entity
@NamedStoredProcedureQueries({
        @NamedStoredProcedureQuery(name = "WEBPersonLogin", procedureName = "WEB_Person_Login", parameters = {
                @StoredProcedureParameter(name = "In_PersonNo", type = String.class, mode = ParameterMode.IN),
                @StoredProcedureParameter(name = "In_PassWord", type = String.class, mode = ParameterMode.IN),
                @StoredProcedureParameter(name = "Return_Error", type = String.class, mode = ParameterMode.OUT)
        })
})
public class MyTable implements Serializable {
}

@NamedStoredProcedureQuery 绑定了一个存储过程，name为自己取在代码中调用的别名，procedureName表示调用的存储过程名称；

@StoredProcedureParameter 表示存储过程中传入参数以及输出参数的定义,name表示字段名，type字段类型，mode表示传入或输出

插曲~：java代码中Boolean布尔类型，存储过程类型为bit，java金额BigDecimal，存储过程money（自己记一下）

@Slf4j
@Service
public class PersonServiceImpl implements IPersonService {

    @PersistenceContext
    private EntityManager entityManager;


    @Override
    public JsonResult validaLogin(String PersonNo，String password) {
        StoredProcedureQuery store = entityManager.createNamedStoredProcedureQuery("WEBPersonLogin")
                .setParameter("In_PersonNo", PersonNo)
                .setParameter("In_PassWord", password);
        String rescode = (String) store.getOutputParameterValue("Return_Error");
        return JsonResult.success(rescode);
    }

entityManager.createNamedStoredProcedureQuery调用实体类创建的存储过程自己取的别名

setParameter给定义传入的参数赋值

getOutputParameterValue通过定义的输出的参数名获取值

插曲~：JsonResult是自已定义的一个工具类

2.2、直接调用存储过程

@Service
public class SysUserServiceImpl implements ISysUserService {

    @PersistenceContext
    private EntityManager entityManager;

    @Override
    public String validaLogin(String PersonNo, String passWord) {
        StoredProcedureQuery store = entityManager.createStoredProcedureQuery("WEB_Person_Login")
                .registerStoredProcedureParameter("In_PersonNo",String.class, ParameterMode.IN)
                .registerStoredProcedureParameter("In_PassWord",String.class, ParameterMode.IN)
                .registerStoredProcedureParameter("Retrun_PersonID",String.class,ParameterMode.OUT)
                .setParameter("In_PersonNo", PersonNo)
                .setParameter("In_PassWord", passWord);
        String retrunError= (String) store.getOutputParameterValue("Return_Error");
        return retrunError;
    }
}

entityManager.createStoredProcedureQuery 创建一个存储过程，名称为数据库存储过程的名称

registerStoredProcedureParameter 定义参数名称、类型、IN/OUT

setParameter 给参数赋值

3、存储过程返回结果集

3.1、存储过程


ALTER PROCEDURE [dbo].[Door_GetDoors_personno]
	
	@In_personid		Int
AS
BEGIN
	-- SET NOCOUNT ON added to prevent extra result sets from
	-- interfering with SELECT statements.
	SET NOCOUNT ON;
	
	Declare @Sql	Varchar(8000)
	
	set @Sql='Select [字段名],[字段名],[字段名]From [表名] where personid =@In_personid'
	
	exec(@Sql)
	
	
END

插曲~：存储过程中没有定义输出参数，但是却查出结果集

3.2、调用存储过程

@Data
@Entity
@NamedStoredProcedureQueries({
        @NamedStoredProcedureQuery(name = "DoorGetDoorsPersonno", procedureName = "Door_GetDoors_personno", resultClasses = {DoorEntity.class}, parameters = {
                @StoredProcedureParameter(name = "In_personid", type = int.class, mode = ParameterMode.IN),
        })
        
})
public class DoorEntity {

    @Id
    private String XX;

    private String XX;


}

映射实体类的两种方式：

1、resultClasses ，实体类的字段名与数据库查询出的字段名一样，可以直接接收，例： resultClasses = {类名.class}

2、resultSetMappings，例：resultSetMappings = {“DoorInfo”}

@SqlResultSetMapping(name = "DoorInfo", entities = {
        @EntityResult(entityClass = DoorEntity.class, fields = {
                @FieldResult(name = "xx", column = "Return_字段"),
                @FieldResult(name = "XX", column = "Return_字段"),
             
        })
})

调用多结果集方法store.getResultList() 如果返回单结果集 store.getSingleResult();

@Service
public class DoorInfoServiceImpl implements IDoorInfoService {

    @PersistenceContext
    private EntityManager entityManager;

    @Override
    public List<DoorEntity> DoorInfoByPersonId(DoorEntity doorEntity) {
        StoredProcedureQuery store = entityManager.createNamedStoredProcedureQuery("DoorGetDoorsPersonno")
                .setParameter("In_personid", doorEntity.getPersonID());
        // 调用多结果集方法store.getResultList()
        List<DoorEntity> doorEntityList = store.getResultList();
       // 如果返回单结果集
       //  DoorEntity doorEntity = store.getSingleResult();
        return doorEntityList ;
    }
}

Bye。。。

来源：CSDN

作者：小妮子`

链接：https://blog.csdn.net/qq_44045573/article/details/103799165

标签

存储过程

sqlserver存储过程