Table of Contents org.hibernate.QueryException: could not instantiate class [com.ak47.cms.cms.dto.TechArticleDto] from tuple Abnormal background solution in conclusion org.hibernate.QueryException: could not instantiate class [com.ak47.cms.cms.dto.TechArticleDto] from tuple When performing Hibernate-based data query, you may encounter an exception similar to ??org.hibernate.QueryException: could not instantiate class??, especially when using DTO (Data Transfer Object) from When mapping data in query results. […]
Tag: hibernate
[spring] spring jpa-hibernate CRUD
[spring] spring jpa – hibernate CRUD Previous Notes [spring] spring jpa – hibernate terminology & configuration After passing through some conceptual things, this note will go through the practical operations CRUD This is implemented through EntityManager (Spring’s dependency injected through DI) and DAO (design pattern). The general implementation structure is to generate a DAO interface, […]
[spring] spring jpa – hibernate terminology & configuration
[spring] spring jpa – hibernate terminology & amp; configuration I have gone through the content of dependency injection before. This time I will go through the data-related part. After completing this part, the next part will involve API implementation. The operation part will be left to the next article. This article is mainly about concepts […]
SpringBoot and Hibernate – how to improve database performance
Abstract: This article is published by the Grape City technical team. Please indicate the source for reprinting: Grape City official website. Grape City provides developers with professional development tools, solutions and services to empower developers. Foreword In the world of software development, performance is a top priority. Whether you’re building a small web application or […]
hibernate.validator.constraints.NotEmpty error when verifying request parameters java.lang.NoClassDefFoundError: javax/el/PropertyNot…
In the spring maven project, use hibernate validator to annotate the input parameter object of the formal verification method. hibernate-validator version: 5.0.2.Final validation-api version: 1.1.0.Final There is an attribute named order_time in the model class annotated with @NotEmpty: package com.emax.paycenter.dto.external; import org.hibernate.validator.constraints.NotEmpty; import org.hibernate.validator.constraints.URL; import javax.validation.constraints.Min; import javax.validation.constraints.NotNull; import java.io.Serializable; /** * Scan QR code […]
[Create a Hibernate Web login project using MyEclipse2017]
Create a Hibernate Web login project using MyEclipse2017 Implement JavaBean/JDBC system manually Hibernate automatically generates the required JavaBeans and replaces the functions of the original JDBC! It can be easily understood as: Hibernate=JavaBean+JDBC 1. Create a Java EE Web project and name the project HibernateDemo. Create two packages under the project src: org.easybooks.test.factory and org.easybooks.test.model.vo […]
Regarding the problem of two-way foreign key association one-to-one property-ref= in hibernate
Everyone knows that there are two main strategies for one-to-one mapping in hibernate, (1) one-to-one primary key association (one-way and two-way). (2) One-to-one foreign key mapping (single and two-way). This article mainly explains the two-way problem in one-to-one foreign key mapping. Before that, we first understand it through an example. person and idCard are a […]
Spring.NET 1.3.2 integrates NHibernate 3.2 – 5 – transaction management
Of course, data access involves transaction management. For NHibernate, we usually use the following method. //Create a new company var session = Assyria.DataAccess.SessionFactory.GetCurrentSession(); using (NHibernate.ITransaction transaction = session.BeginTransaction()) { session.Save(company); transaction.Commit(); } The session’s BeginTransaction is used to start transaction management, and the Commit method is used to explicitly commit the transaction. Spring.NET provides complete […]
Spring.NET 1.3.2 integrates NHibernate 3.2 – 4 – to implement basic data access
A week has passed in the blink of an eye, and I haven’t actually accessed the database yet, so I need to work harder. Tall buildings rise from the ground, and we start step by step. 1. Prepare data Data access naturally requires data. Here we use the sample database in the book “Microsoft SQL […]
Spring integrates hibernate
My personal experience is very simple, and I found out after chatting with Brother Chao. In hibernate4.0.getCurrentSession(), this method is rarely used. It is a small example of a hibernate mapping table. step: 1. Construction project 2. Import the required jar packages 3. Create a mapping entity class 4. Create the configuration file hibernate.cfg.xml to […]