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MyBatis3 provides a new annotation based configuration. Related annotations are defined in MapperAnnotationBuilder:public MapperAnnotationBuilder(Configuration configuration, Class<?> type) { ... sqlAnnotationTypes.add(Select.class); sqlAnnotationTypes.add(Insert.class); sqlAnnotationTypes.add(Update.class); sqlAnnotat ...

1, Integrate Mybatis Mybatis spring new package Environment construction <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> </dependency&g ...

When learning mabatis or looking at the company's mybatis project, many beginners are always confused about the relationship between SqlSessionSql, SqlSessionTemplate, SessionFactory and SqlSessionFactoryBean. Especially when we look at other people's code, different projects are completed by different people with different styles. Some people ...

Introduction to Mybatis Original jdbc operation Problems in the original jdbc development: The frequent creation and release of database connections cause a waste of system resources, which affects the system performance sql statements are hard coded in the code, which makes the code difficult to maintain. The actual application of sql may ...

Mybatis learning record SSM framework: of configuration file. The best way: look at the official website documents; 1. Introduction 1.1. What is Mybatis MyBatis is an excellent persistence layer frameworkIt supports customized SQL, stored procedures, and advanced mapping.MyBatis avoids almost all JDBC code and manually setting parameters an ...

1 objectives SpringBoot project can be created quickly (without writing any configuration files)Introduction to the basic principles of SpringBootIntroduction and use of SpringBoot configuration fileSpringBoot integrates Mybatis, Redis and timerSpring boot sends Http requestTesting in SpringBootSpring boot packaged deployment 2 create a Spring ...

MyBatis provides a function of plug-in. Although it is called plug-in, it is actually an interceptor function. So what does the interceptor intercept in MyBatis? We enter Official website have a look: MyBatis allows you to intercept calls at some point during the execution of mapped statements. By default, MyBatis allows the use of plug-ins to ...

Description of main functions: Administrator role View customer information, beverage management, view categories, order management and other functions. User role: Users log in and register, modify personal information, view the home page, view the classification of drinks, view hot drinks, view the details of drinks, view the shopping cart ...

When using PageHelper in Mybatis, if you encounter multi table queries, especially associated queries (one-to-one, one to many) If two or more tables contain the same column name, it will lead to: 1. For one to many and multiple parties, there will be an undefined column (the primary key name or a field name are the same) ### The error may e ...

catalogue Build environment if choose,when,otherwise trim,where,set sql fragment foreach Dynamic SQL refers to generating different SQL statements according to different conditions under different circumstances Build environment database CREATE TABLE `blog`( `id` VARCHAR(50) NOT NULL COMMENT 'Blog id', `title` VARCHAR(100) NOT NUL ...