Spring Two agent differences

The difference between two kinds of agent JDK and Cglib in spring:

The Java Dynamic Agent uses the reflection mechanism to generate an anonymous class that implements the proxy interface, and calls the Invokehandler class to handle before invoking the concrete method;

The Cglib dynamic agent is the use of ASM Open Source package, the class file of proxy object classes loaded in, by modifying its bytecode subclass to deal with.

1> if the target object implements an interface, AOP is implemented by default with the dynamic proxy of the JDK;

2> if the target object implements an interface, you can enforce AOP using Cglib;

3> if the target object does not implement the interface, the Cglib library must be used, and spring will automatically switch between the JDK dynamic agent and the Cglib;

Spring Two agent differences