1.常见bean name创建出现问题

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'student03' defined in class path resource [applicationContext.xml]: Instantiation of bean failed; nested exception is java.lang.IllegalStateException: No bean class specified on bean definition

xml的property和class不一致

org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 73 in XML document from class path resource [applicationContext.xml] is invalid; nested exception is org.xml.sax.SAXParseException; lineNumber: 73; columnNumber: 13;

xml没有配置name

2.web.xml无法加载配置文件

java.io.FileNotFoundException: ServletContext resource [/spring/] cannot be resolved to URL because it does not exist

param-value名字不一致

如果出现类似问题，可以查看配置文件的名字，路径，或者class类是否正确

3.文件上传解析器配置出现问题

No mapping found for HTTP request with URI [/hello-springmvc-config/%7BpageContext.request.contextPath%7D/test01.html] in DispatcherServlet