0(模板)
所犯错误:
现象:
报错内容:
1
所犯错误:
声明@Webservlet中未加“/”符号;
现象:
能够Connected to server,但是代码报错,且无法顺利运行相应代码;
报错内容:
Caused by: java.lang.IllegalArgumentException: Invalid <url-pattern> [demo1] in servlet mapping
Caused by: java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[]]
原文:https://www.cnblogs.com/ArvinB/p/11552878.html