Programmer Group

This paper introduces the simple application of spring boot integrating spring data JPA What is spring data jpa? We can't help thinking about it. In fact, spring data jpa uses hibernate by default and spring data jpa technology, which implements the template Dao layer. It only needs to inherit an interface in Dao to easily complete "add, d ...

[toc] preface Every time we execute rm commands on the production environment server, we are always on the edge of our pants, because once we accidentally execute the error deletion, we will be ready to run. After all, people are not machines, let alone machines have bug s, hehe. So what if you really delete files that should not be deleted, su ...

I. brief introduction     Quartz.NET It is a powerful, open source and lightweight job scheduling framework. It is a. Net porting of OpenSymphony's Quartz API. It can be rewritten with C ා and can be used in WinForm and WinForm ASP.NET In use. It is flexible and uncomplicated, and can create simple or complex job scheduling for execu ...

Last article( https://www.cnblogs.com/meowv/p/12909558.html )Improved the code in the project and connected to Swagger. This article mainly uses the Entity Framework Core to access the database, and uses the code first method for data migration and automatic creation of table structure. data access Add our data access context object MeowvBl ...

0. Preface In the last article, you basically completed the introductory tutorial for EF Core.Starting with this article, we'll try to explore more ORM frameworks on the.net core platform.So let's start with NHibernate. 1. Introduction to NHibernate NHibernate is the C#version of Hibernate, known as the pillar of ORM in Java (at least once).Hib ...

Because the project is front-end and back-end separate development, the ionic framework is used on the mobile side and the SpringBoot framework is used on the back-end API interface.Backend implementations of registration and login can refer to my article: Backend development: SpringBoot implements registration and login functions .The ionic fr ...

I believe that many small partners have seen the response time and real-time display function of url interface in some commercial products. It can be understood that the slow query of web interface and the slow query of sql have the same magic, but if you want to do it, you have no way to start and don't know how to realize this function, so to ...

introduction In the previous blog post, the database desensitization scenario and scheme have been completely introduced. The sharding JDBC open source project from Jingdong Digital Technology Co., Ltd. has realized this function transparently through the way of data source intermediate agent. However, although the function has been realized, ...

1. One way one to many configuration One way one to many is configured with the @ OneToMany tag. One party has a Set attribute associated with multiple parties. A Set can be a List or a Set, but the difference is that a List is ordered and a Set is not repeated. Corresponding to the configuration of @ OneToMany on one side: /** * One way one ...

[Abstract]The set solver provides JDBC driver, which is easy to embed into Java program calls. The methods are similar to executing SQL and stored procedures in Java. The structure diagram is as follows: First, deploy JDBC to Java application project. In short, put the jar package and configuration file required to load the aggregator when st ...