servlet报错“严重: Allocate exception for servlet 类名java.lang.ClassNotFoundException: 路径. 类名”可能原因
1、WEB-INF下web.xml中<servlet-class>路径错误,正确路径为
<servlet-class>包名.类名</servlet-class>
2、Libraries中没有servlet的jar包
若为missing,则remove后重启eclipse,下次启动会载入最新jar
若缺少jar包,则add