mybatis interceptor

MyBatis Interceptor is a mechanism provided by MyBatis to intercept and modify SQL statements, results, and other operations executed by MyBatis. It is a powerful feature that can be used to add custom logic to MyBatis, such as logging, performance monitoring, security checks, and more.

The MyBatis Interceptor works by intercepting method calls to the MyBatis core classes, such as SqlSession, MapperProxy, and Executor. It provides pre-processing and post-processing hooks for SQL statements, results, and exceptions.

To use the MyBatis Interceptor, you need to create a class that implements the Interceptor interface and override its three methods: intercept(), plugin(), and setProperties(). The intercept() method is called for each method invocation, and you can modify the method arguments, invoke the method yourself, and modify the return value. The plugin() method is used to wrap the target object with the interceptor, and the setProperties() method is used to configure the interceptor with any properties it needs.

Once you have implemented your interceptor, you need to register it with MyBatis by adding it to the configuration file, as follows:

<plugins>
  <plugin interceptor="com.example.MyInterceptor">
    <property name="property1" value="value1"/>
    <property name="property2" value="value2"/>
  </plugin>
</plugins>

In this example, the MyInterceptor class is registered as a plugin, and two properties are passed to it.

Overall, the MyBatis Interceptor is a flexible and powerful tool that can be used to customize MyBatis behavior to fit your specific needs.