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Many articles about dynamic agent on the Internet are like this: A Real class for practical work; a Proxy class created. Proxy calls the proxy method in Real, and prints some strings before and after the proxy method. For example: 1 public class JdkProxy { 2 static interface IProxy{ 3 String say(String s); 4 } 5 static ...

Association and select are easy to travel   mapper configuration:   <resultMap type="com.demo.sys.entity.Menu" id="menuMap">       <id property="id" column="id" />       <result property="name" column="menu_name" />       <result property="url" column="url" />       <result property="active ...

Summary This method (invokeBeanFactoryPostProcessors) instantiates and calls all BeanFactoryPostProcessors, including its subclass BeanDefinitionRegistryPostProcessor. The BeanFactoryPostProcessor interface is an extension point exposed to Spring when it initializes BeanFactory, and the Spring IoC container allows BeanFactoryPostProcessor to re ...

Automatic generation of mybatis generator code Mybatis generator is a good tool for automatic code generation of mybatis. It's very troublesome to write entity classes, mapper s and xml configuration files manually. Using mybatis generator only needs simple configuration. Here is a brief description of the development steps. ...

1. Plug in introduction This plug-in is an enhanced version of Maven plug-in based on mybatis in idea, and supports the following operations: 1) Chinese notes of corresponding table fields of self defined import database 2) Suffix rename of Mapper and dao files 3) Implementation of paging class 4) Lombok integration can simplify the code 2. P ...

Framework When the amount of data is not large, we can separate the reading and writing of the database to meet the demand of high concurrency. We can alleviate the pressure of query by expanding the database horizontally. As follows: When the amount of data reaches 5 million, then the amount of data is estimated to be tens of millions, and ...

MyBatis framework configuration and use 2 Original December 24, 2017 22:36:32 <ul class="article_tags clearfix csdn-tracking-statistics tracking-click" data-mod="popu_377" style="display: none;"> <li class="tit"><font style="vertical-align: inh ...

The return type of each query map of MyBatis is resultmap. However, when the return type property provided by us is resultType, MyBatis automatically assigns the corresponding value to the property of the object specified by resultType. When the return type provided by us is resultmap, it will data base The middle column data i ...

The Mybatis framework no longer introduces: There are some problems in JDBC: 1. Frequent connection and release of resources waste memory 2. The coding is not easy to maintain So we have a framework to simplify database operation: Hibernate, Mybatis and so on. Here we introduce Mybatis   Download address: https://github.com/mybatis/mybatis-3/re ...

The previous version is too simple. This version creates config, executor, handler, and mapped statement according to the source code format. The entire project structure is as follows: This project simulates several main categories of MyBatis: sqlsession, configuration, executor, mapperproxy, mappedstatement, result ...