問題：javax.servlet.ServletException: Wrapper cannot find servlet class vko.userhome.UserHomeServlet or a class it depends on org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:877) org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:594) org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1675) java.lang.Thread.run(Thread.java:662)
root cause
java.lang.ClassNotFoundException: vko.userhome.UserHomeServlet org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:877) org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:594) org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1675) java.lang.Thread.run(Thread.java:662)
解決：servlet的路徑不匹配!修改過來ok！
“Error loading WebappClassLoader”，一直報這個錯誤，從網上也找了好多資料，看到一個高手說的這個方法：查看你的Servlet是否放置到正確的目錄，配置是否正確!Web-INF etc！試了下，ok！
這里隨手做個筆記！哈哈
本人文檔純屬個人總結使用，如有不對的地方，還望親愛的小伙伴們勿噴!