org.apache.jasper.JasperException：/index.jsp

Question

我在jsp上使用usebean標記，但即使我已經完成了所有可能的最佳解決方案，但仍遇到以下錯誤。任何一個可以幫助錯誤如下

類型異常報告

message /index.jsp (line: 1, column: 1) The value for the useBean  
class attribute org.deepak.my is invalid. 

description The server encountered an internal error that prevented 
it from fulfilling this request. 

例外

org.apache.jasper.JasperException: /index.jsp (line: 1, column: 1) 
The value for the useBean class attribute org.deepak.my is invalid. 
    org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:42) 
    org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:291) 
    org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:114) 
    org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1379) 
    org.apache.jasper.compiler.Node$UseBean.accept(Node.java:1187) 
    org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2392) 
    org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2444) 
    org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2450) 
    org.apache.jasper.compiler.Node$Root.accept(Node.java:471) 
    org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2392) 
    org.apache.jasper.compiler.Generator.generate(Generator.java:3668) 
    org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:252) 
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:372) 
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:349) 
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:333) 
    org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:600) 
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:368) 
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385) 
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729) 
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) 

注根源的完整堆棧跟蹤是在Apache Tomcat的可用/9.0.0.M17日誌。

Answer 1

在下面的語句嘗試的類型代替類如果有： -
<jsp:useBean id="my" class="org.deepak.my" />

試圖找到SO發佈問題之前回答，請參閱本Answer通過@BalusC給出，它會幫助你解決你的問題。