如何使用Hibernate在Spring Boot中调用MySQL存储过程？

Question

CREATE PROCEDURE login(IN  in_user_id    varchar(100),
                           IN  in_password   varchar(100),
                           OUT out_code      INT,
                           OUT out_message   varchar(100))
 BEGIN
    IF in_user_id IS NULL OR in_user_id = ''
     THEN
     SET out_code = 1;
     SET out_message = 'Please Enter Your First Name.';
   END IF;
 /*Logi Here*/

 END;

@Entity
@Table(name = "user")
 @NamedStoredProcedureQueries({
   @NamedStoredProcedureQuery(
   name = "do_login", 
   procedureName = "login", 
   resultClasses = { LoginModel.class },    
   parameters = { 
      @StoredProcedureParameter( name = " in_user_id",  type = String.class,  mode = ParameterMode.IN),
      @StoredProcedureParameter( name = "in_password",  type = String.class,  mode = ParameterMode.IN),
      @StoredProcedureParameter( name = "out_code",  type = Integer.class,  mode = ParameterMode.OUT), 
      @StoredProcedureParameter( name = "out_message",  type = String.class,  mode = ParameterMode.OUT)

     }),

 })

 public class LoginModel implements Serializable {

   @NotEmpty
   private String userid;

   @NotEmpty
   private String password;

  //Here is getter setter
  }

@RequestMapping(value = "/login", method = RequestMethod.POST)
 public String doLogin(@ModelAttribute("webLoginForm") @Valid LoginModel registrationModel,
    BindingResult bindingResult, Model model, Errors error) {
     if(error.hasErrors()) {
         return "login";
     }

   // Here I want to check My Procedure result & redirect to welcome page
   //return "redirect:/welcome";

  return "login";
}

   public interface LoginRepository  extends CrudRepository<LoginModel, Integer>{


 }

Answer 1

您可以使用javax.persistence.StoredProceduRequery调用存储过程。您甚至不需要在实体上声明任何东西。
我建议将过程调用逻辑移动到服务，然后从控制器调用服务方法。

例如：

@Service
public class LoginServiceImpl implements LoginService {

    @PersistenceContext
    private EntityManager entityManager;

    public Boolean checkUsernameAndPassword(String username, String password) {

        //"login" this is the name of your procedure
        StoredProcedureQuery query = entityManager.createStoredProcedureQuery("login"); 

        //Declare the parameters in the same order
        query.registerStoredProcedureParameter(1, String.class, ParameterMode.IN);
        query.registerStoredProcedureParameter(2, String.class, ParameterMode.IN);
        query.registerStoredProcedureParameter(3, Integer.class, ParameterMode.OUT);
        query.registerStoredProcedureParameter(4, String.class, ParameterMode.OUT);

        //Pass the parameter values
        query.setParameter(1, username);
        query.setParameter(2, password);

        //Execute query
        query.execute();

        //Get output parameters
        Integer outCode = (Integer) query.getOutputParameterValue(3);
        String outMessage = (String) query.getOutputParameterValue(4);

        return true; //enter your condition
    }
}

然后，在注入LoginService之后，可以从控制器调用此方法。