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This paper connects MyBatis basic learning knowledge point 1 and continues to discuss the following two issues         1. What is Dao configuration file mainly used for? How to configure?         2. How to test program running with test method? What does each stat ...

Mybatis source code analysis The first is the basic steps of Mybatis public class StudentMapperTest { private static SqlSessionFactory sqlSessionFactory; @BeforeClass public static void init() { try { Reader reader = Resources.getResourceAsReader("mybatis-config.xml"); //A Configuration object is a ...

Problem: BindingException exception, that is, there is no binding between Mapper and XML, that is, the Mapper interface does not find the XML implementation class. The main reason is that the binding relationship is not configured in Mybatis Configuration. Here we provide the binding relationship between two storage locations org.apache.ibatis ...

Why is there such a need Recently, we have an online project. Due to the large amount of read-write data, the pressure on the database increases, so now we plan to adopt the scheme of read-write separation. How to solve it The framework we use is springboot+mybatisplus, and it is an online project. It can not be transformed in large quan ...

SpringMVC Translation of Chinese documents: https://github.com/DocsHome/spring-docs/blob/master/pages/web/overview.md Search GitHub for spring docs Introduction to Spring MVC Spring MVC is a part of spring framework. It is a lightweight web framework based on Java implementation. The core of spring MVC The core of learning Spring MV ...

See for complete project code https://codechina.csdn.net/dreaming_coder/mybatis-spring 1. Introduction In the past, when using Spring to integrate Mybatis, the Mapper interface should be added to Spring in the following way: <bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean"> <property name="mapperInterfac ...

Self use notes, combined with crazy God talk videos and official documents, were written in May 2021. Mybatis plus is updated quickly and may fall behind in the future. Only share for reference brief introduction concept MyBatis plus is an enhancement tool of MyBatis. Based on MyBatis, it only makes enhancement without change, and is b ...

MybatisPlus provides us with a powerful method of adding, deleting, modifying and querying a single table, and adds a paging plug-in to automatically realize physical paging, which is very easy to use However, in practice, the addition, deletion, modification and query of a single table is obviously not enough. If multi table operation is added ...

1. Preparatory work Download mybatis: https://github.com/mybatis/mybatis-3/releases Download mysql driver: https://mvnrepository.com/artifact/mysql/mysql-connector-java Here I use the latest version of mybatis-3.5.9 and mysql-connector-java-8.0.22 jar. 2. Build development environment (1) Create mysql database and tables Database name: ...

1 . Introducing mybatis plus mybatis plus (opens new window) (MP for short) is an enhancement tool of MyBatis (opens new window). On the basis of mybatis, it only makes enhancement without change, and is born to simplify development and improve efficiency. But for the join table operation, you must also use mybatis 2 . characteristic No inv ...