Programming VIP

1. The necessity of JDBC database connection pool When developing web programs based on database, the traditional mode basically follows the following steps: Establish database connection in the main program (such as servlet and beans)Perform sql operationsDisconnect database Problems in the development of this model: Ordinary JDBC dat ...

Introduction to spring data For the data access layer, whether SQL (relational database) or NoSQL (non relational database), the bottom layer of Spring Boot adopts the way of Spring Data for unified processing. The bottom layer of Spring Boot uses Spring Data to uniformly process various databases. Spring Data is also a well-known project in ...

Tip: After the article is written, the catalog can be generated automatically, how to generate the help document to the right Article Directory PrefaceI. Database Operation StatementPreparedStatementResultSetResultSetMetaData2. Return a record in a table for different table query operationsthree And implement common query operatio ...

[Abstract] preparation of JDBC Java connection MySQL database tool: MySQL driver jar package corresponding to MySQL (database), MyEclipse (development tool) and Navicat (database management tool) (my mql is 8.0, so MySQL connector java-8.0.13. Jar) MySQL connector java-8.0.13 Jar package JDBC Java connection to MySql database Tool preparati ...

JDBC core technology Chapter 1: JDBC overview 1.1 data persistence Persistence: save data to a power down storage device for later use. In most cases, especially for enterprise applications, data persistence means saving the data in memory to the hard disk for "solidification", and the implementation process of persistence i ...

What is Java SPI? The full name of SPI is: Service Provider Interface. In Java util. Serviceloader is described in detail in the documentation. Briefly summarize the idea of Java SPI mechanism. Each abstract module in our system often has many different implementation schemes, such as the scheme of log module, xml parsing module, jdbc module, ...

spring integrates mytabis Is to use the function of mybatis in the spring architecture It is equal to the mybatis tar package imported from the code written in non spring architecture to do the operation of the core configuration file, mapping configuration file and dynamic proxy interface of mybatis. Then there are operations such as dao, se ...

MyBatis 1, Framework introduction 1.1 concept of framework Framework is a semi-finished product of software, which completes the general operation in the process of software development. Programmers can realize specific functions with little or no processing, so as to simplify the development process and improve efficiency. 1.2 common ...

Concept: Java DataBase Connectivity, java database connection, java language operation database. Essence: it is actually an officially defined set of rules for operating all relational databases, namely interfaces. Each database manufacturer implements this set of interface and provides the database jar package. We can use this set of interfac ...

prefacestay Mybatis source code - SqlSession access It has been known in the article that when obtaining SqlSession in Mybatis, the Executor will be created and stored in SqlSession. The dynamic proxy object of the mapping interface can be obtained through SqlSession, and the generation of dynamic proxy object can be referred to Mybatis source ...