Programmer Group

1. Introduction to Spring Boot When I first came into contact with Spring, I felt that it was a very difficult framework to access because of its complex configuration files, the xml file that I disliked most, and the readability of such files was very poor. So for a long time, my Spring learning was out of stagnation. But that changed after I ...

First, what is a database connection pool? Official: Connection pooling is to set up enough database connections when the program starts, and make these connections into a connection pool. The program dynamically applies for, uses and releases the connections in the pool.Personal Understanding: Creating database connections is ...

Configuration of Hot Word Lexicon 1. Using IK built-in Thesaurus Advantages: Easy deployment, no additional lexical location required Disadvantage: Single participle, can not specify the entry to be participled 2.IK External Static Lexicon Advantages: Deployment is relatively convenient, and you can get the desired entries by editing the spec ...

Above( Tangent Analysis of Spring Transactions ) In this article, we explain how Spring determines whether the target method needs to weave into aspect logic, which explains that transaction logic is woven through Transaction Interceptor. This article mainly explains how Transaction Interceptor weaves into aspect logic. 1. Global Transaction Lo ...

1. introduction: Framework: A reusable design of a whole or part of a system, represented by a set of abstract components and methods of interaction between component instances; another definition holds that a framework is an application skeleton customized by application developers. The former is defined in terms of applicati ...

Javaer Reprinted please indicate the origin, thank you!! Routing condition In ParsingSQLRouter.java, the following conditions are used to determine whether a simple routing or a complex routing is needed. private RoutingResult route(final List<Object> parameters, final SQLStatement sqlStatement) { Collectio ...

Introduction: This paper mainly elaborates on four aspects: 1: background; 2: ideas; 3: code implementation; 4: use One: Packaging background. In the project, JPA, some complex queries, such as native JdbcTemplate, are inconvenient; Paging function and result set auto-alignment are needed. See Section 4. The following two diagrams show the ...

Use Eclipse to develop and debug Web Builder projects Download and install the Groovy plug-in: Download address: Groovy-Eclipse Download and install the Tomcat plug-in: Download address: Tomca-Eclipse Open Eclipse and configure the Tomcat plug-in as shown below: Create a new Java Project project Name it WB8 and add Groovy support in the righ ...

Detailed description of three factory models: Simple factory model: Scenario: The factory class is responsible for creating fewer objects, the client only cares about the parameters that are passed into the factory class, and does not care about how to create the logic of the object. Disadvantage: If you want to add new products, you need to ...

After learning Spring, I simply learned about MyBatis. Then, a simple integration is carried out, which meets the problem that MyBatista interface mapping beans can not be automatically injected. Code exceptions: Exceptions in thread "main" org. spring frame. bean. factory. Error creating a bean named "UserController": uns ...