Programmer Group

1. Review of the relationship between tables (emphasis) 1.1. One-to-many (1) Classification and commodity relationship. There are many commodities in a classification. A commodity can only belong to one classification.   (2) One-to-many relationship between customers and contacts - Customer: With the company business contacts, Baidu, Sina, ...

introduce Through this article, you can learn how to encapsulate or develop a front-end component, and learn how to use Bootstrap-fileinput component. It is easier and more convenient to use after encapsulation. BaseFile is an attachment upload component based on Bootstrap-fileinput in AdminEAP framework. It supports supporting multi-fi ...

A major difficulty in migrating Oracle database to MySQL database is the replacement of the primary key generation strategy. If Oracle's Sequence mechanism is used in previous programs to achieve the primary key self-increment, it is necessary to use TableGenerator for equivalent replacement in MySQL. When replacing, there are three main area ...

stay spring aop transaction management We found that we implemented transaction management in service layer. Now there are the following scenarios. Let's discuss how to achieve them. Controller A, Controller B, Controller C... Depending on ServiceA and ServiceB, the save d operation of the above-mentioned Controller needs to synchronize the ...

Build a catalogue for your blog posts 1. Write in front This should be seen in the past few days. Hibernate User Manual Speaking of it. This Handbook is really long, and it's all in English. For me who just passed CET-4, it's really hard to read. This "laborious" performance is that I often look at it and forget where I see it. The im ...

Hibernate additions, deletions and modifications 1. First, we need to know what Hibernate is. Hibernate is a lightweight ORMapping object. Mainly used to achieve the mapping between Java and database tables, in addition to providing data query and data acquisition methods. It can greatly reduce the time of manual use of SQL and JDBC to process ...

Hibernate Learning Notes 2 1. summary This paper mainly introduces how to deal with the following problems: Mapping of Enumerated Types Mapping of Time Type Custom Property Mapping in JPA Automatic generation parameters (such as insertion time of automatically generated data, update time of automatically generated data) 2. Domain Model 1.1. B ...

Three approaches are provided in the documentation of the Hibernate annotation specification: 1. Annotate the component class as @Embeddable and the attribute of the component as @Id. 2. Annotate the attribute of the component as @Embeddable; package com.cmh.beans; import javax.persistence.Embeddable; import java.io.Serializab ...

The processor interceptor of Spring Web MVC is similar to the Filter filter Filter in Servlet development, which is used to preprocess and post-process the processor. Interceptor application scenarios: 1. Logging: Logging requests for information for information monitoring, information statistics, computing PV (Page View), etc. 2. Privilege ...

Reprinted from: http://blog.csdn.net/trigl/article/details/50968079 Before writing this blog, I first read Spring in action, and then read some articles about Spring transaction management on the internet. I don't feel that they are complete. Here I will summarize the knowledge of the book and the Internet about the transaction. The re ...