Spring NOTE 1

Spring relies on the application context XML file (Beans.xml or applicationcontext.xml) for object definition to complete the core work. You can import other XML files (such as databases, <import resource= "Spring/dao/mysql-datasource.xml"/>) into the XML file. Beans is a map<string,object> structure.

AOP is plane-oriented programming (Aspect oriented programming).

The Jdom package is used to parse the XML file, take out the internal class name, and so on.

The JUnit package is used to test a function of a Java class (the main function is testxxx, similar to the direct write main function).

IOC control inversion (di dependency injection): Requires no new operation within the object and relies on the context and beans.xml to complete the automatic filling (i.e. injection) of the object.

Spring NOTE 1