Spring's question 1

This is a problem with configuring AOP in spring (which may be simpler than others, but I would like to write it down):
Org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException:Line 1 in XML document from class path resource [ Application.xml] is invalid; Nested exception is org.xml.sax.SAXParseException:White spaces is required between publicid and SystemID.

The problem is that the configuration file is not written correctly at the beginning of the operation of the XML configuration file, and there are several invalid configurations. After the modification, the following problems have arisen:
Org.springframework.beans.factory.BeanDefinitionStoreException:Unexpected exception parsing XML document from class Path resource [application.xml]; Nested exception is Java.lang.noclassdeffounderror:org/aopalliance/aop/advice

This problem is because there is no import Aopalliance.jar package, you can download from http://mvnrepository.com/artifact/aopalliance/aopalliance

Through the above a simple AOP configuration, in fact, can also be explained from the official website Download Spring package is not very full, in the future configuration needs more attention, usually pay more attention to the collection