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Mybatis-9.28 Environmental Science: JDK1.8 Mysql 5.7 maven 3.6.1 IDEA Review: JDBC Mysql Java Foundation Maven Junit SSM framework: of configuration files. The best way: look at the official website documents; 1. Introduction 1.1. What is Mybatis MyBatis is an excellent persistence layer framework It supports customized SQL, stored proced ...

Documentation for mybatis3 version -- > mybatis document Write in front Ok, which is also the part of dynamic sql; It should be noted that later, I added a column recording age to the employee table. Of course, I also added attributes and its getset method to the Employee class; Construction method; toString(); These are also added with ...

Basic support layer The basic support layer is located at the bottom of the overall architecture of MyBatis, supports the core processing layer of MyBatis, and is the cornerstone of the whole framework. Several general and independent modules are encapsulated in the basic support layer. It not only provides basic support for MyBatis, but also ...

@[toc]Last week, brother song reprinted an article on batch data insertion. He talked with you about how to do batch data insertion quickly.After reading the article, a little partner put forward different opinions:Brother song had a serious chat with BUG and basically understood the meaning of this little partner, so I also wrote a test case a ...

MyBatis framework dynamic Sql Dynamic SQL: judge the conditions through various tags provided by MyBatis to realize dynamic splicing of SQL statements. The expression used for conditional judgment here is OGNL expression. The commonly used dynamic SQL tags are,,, and so on. The dynamic SQL statement of MyBatis is very similar to the stat ...

preface: Hello, guys, I'm running snail rz. Of course, you can call me snail Jun. I'm a rookie who has studied Java for more than half a year. At the same time, I also have a great dream, that is, to become an excellent Java Architect one day. This SpringBoot basic learning series is used to record the whole process of learning the ...

1. Set log Logs can facilitate our troubleshooting. They are not enabled by default. They need to be set in the core configuration file. name and value should be consistent with the official documents! 1.1 default log <!--Set log default configuration--> <settings> <setting name="logImpl" value="STDOUT_LOGGING"/&gt ...

#1, Basic use 1.mybatis-config.xml template <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.jianan.mapper.xxx"> </mapper> 2. Top level elements The real power of MyBatis lies in its st ...

1.mybatis-config.xml template <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> </configuration> 2. properties Use example These properties can be set in the child elements of the propertie ...

Mybatis generator source code learning and modification Required jar package: generator-mybatis-generator-1.3.2.jar Background: The company's database is divided into sub databases. During query, the customerId must be modified, otherwise the query efficiency will become low. The database table 60 +, almost every table of the new projec ...