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Links to the original text: https://www.cnblogs.com/qq1141100952com/p/10478047.html <select id="selectSelective" resultMap="BaseResultMap" parameterType="com.wjh.bean.TUser"> select <include refid="Base_Column_List" /> fr ...

1. Case introduction The results of Mybatis query database are stored in Redis database as key-value pairs instead of secondary cache in Mybatis. When querying the same operation, we can read the results directly in Redis to improve efficiency. 2. Case Realization 2.1 Importing project dependencie ...

The javaBean is as follows: public class Permission implements Serializable { private Integer id; private String name; private String icon; private String url; private boolean open;//Are the leaves open? private Integer pid;//Father id private boolean checked;//Is it selected ...

Automatic Filling of Common Fields 1.1 Metadata Processor Interface com.baomidou.mybatisplus.mapper.MetaObjectHandler insertFill(MetaObject metaObject) updateFill(MetaObject metaObject) metaobject: metaobject. It is an object provided by Mybatis for accessing the properties of objects more conveniently and elegantly, setting values for the pr ...

Interface Binding Scheme Effect After creating an interface, the implementation class of the interface is generated by mybatis. By calling the interface object, the sql written in mapper.xml can be obtained. Note: This solution is used in the later integration of mybatis and spring Implementation ...

Mybatis Multiple Data Sources Read-Write Separation (Annotation Implementation) First, we need to build two libraries for testing. I use master_test and slave_test libraries here. Both libraries have the same table (lazy, happy), table structure. Table name t_user | Field Name | Type | Note| | :------: | :------: | :------: || id | int | Prima ...

Label (Space Separation): Uncategorized The package where the log function code resides org.apache.ibatis.logging Loading order of log module mybatis does not have its own log module. It uses third-party logs (and jdk has its own logs) Log loading order slf4J_commonsLoging_Log4J2_Log4J_JdkLog Related code Declare the loading order in the stati ...

Spring boot + mybatis + multiple data sources Necessary dependencies application.properties configures multiple data source connections and connection pools Configuring the Core Configuration of Multiple Data Sources Configuration of Connecting test Master Database Configuration of connecting cbh da ...

myBatis project configuration 1,environment Mybatis supports multiple environments and can be configured arbitrarily 2,transactionManager Mybatis supports two types of transaction managers, JDBC and MANAGED (hosting) JDBC: The application is responsible for managing the life cycle of database connecti ...

Mybatis Chinese development document download I. if, where Step 1: Encapsulate the mapping of database tables to User.java package cn.lemon.domain; import java.io.Serializable; import java.util.Date; public class User implements Serializable { private Integer id; private String username; ...