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Phase source code details: Through a simple demo for single step debugging, it is convenient to have a deep understanding of each step of Mybatis. The example is as follows: public class MybatisLearn { public static void main(String[] args) throws IOException { String resource = "mybatis-config.xml"; InputStream inputSt ...

When using Mybatis, you may have a question: why can you only write Mapper interface to operate database? Its main idea is to use dynamic agent to generate implementation class, and then cooperate with SQL statement in xml Mapping file to access database. Let's take a look at the source code. binding module core class Mapper registry: the regi ...

SSM environment construction Create project General directory structure Specific file configuration Run Tomcat Operation result SSM(Spring+SpringMVC+MyBatis), the framework of web project First of all, ensure that the Maven configuration is completed and that the image source is replaced by domest ...

I. integration ideas SSM framework, namely spring MVC + Spring + mybati framework set, is a lightweight Web open source framework. The modules they are responsible for in the JAVA three-tier architecture are as follows: Among them, there is an inclusion relationship between spring MVC and spring, so there is no need to integrate them, just ...

1.Oracle batch operation My watch structure is 1.1 batch insertion 1.1.1 primary key does not use sequence insert into students(sid,sname,ssal,ssex) select 9,'Zhang San',3000,'male' from dual union all select 10,'Li Si',4000,'male' from dual union all select 11,'Xiaohong',5000,'female' from dual ...

We use mybatis to operate the database through the API call of SqlSession, and create SqlSession through SqlSessionFactory. Let's take a look at the creation process of SqlSessionFactory. Profile resolution portal Let's look at the test method in the first article 1 public static void main(String[] args) throws IOException { 2 Strin ...

Basic steps and code of Mybatis framework 1.ji create the required database 2. Configure the global configuration file mybatis ﹤ config.xml (other file names are preferred) <?xml version="1.0" encoding="UTF-8"?> ...

  mavne file: <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <parent> <groupId ...

The initialization of Mybatis is completed by SqlSessionFactoryBuilder. The main work is to parse the XML file, encapsulate the parsed class contents into the Configuration class, and finally encapsulate the Configuration class into SqlSessionFactory and return it. Since then, the initialization is completed. Three classes, XMLConfigBuilder, XM ...

I. MyBatis mapping file 1, introduction The real power of MyBatis lies in its mapping statement and its magic. Because of its extraordinary power, the XML file of mapper is relatively simple. If you compare it with JDBC code with the same function, you will immediately find that nearly 95% of the code is saved. MyBatis is built for SQL and is ...