打不开老师的文件时出现的问题-1

来源：互联网发布：linux 查看字体编辑：程序博客网时间：2024/06/06 04:02

1.遇到的第一个问题是 dataconn.dataconn

大佬帮我解决了这个问题……原因大概就是老师给的文件把dataconn放在了WEB-INF里面，其实应该放在.src下面

其他的问题我连数据库都不知道怎么连……就更不知道怎么解决了……希望可以解决掉

给自己看的忠告

前端工程师，首先是一个工程师，然后才是一个前端工程师，后端我也得会啊！！！

HTTP Status 500 – Internal Server Error

Type Exception Report

Message /javaweb2017/mysite/index.jsp (line: [2], column: [0]) The value for the useBean class attribute [dataconn.dataconn] is invalid.

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

org.apache.jasper.JasperException: /javaweb2017/mysite/index.jsp (line: [2], column: [0]) The value for the useBean class attribute [dataconn.dataconn] is invalid.org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:42)org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:292)org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:115)org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1373)org.apache.jasper.compiler.Node$UseBean.accept(Node.java:1186)org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2389)org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2441)org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2447)org.apache.jasper.compiler.Node$Root.accept(Node.java:470)org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2389)org.apache.jasper.compiler.Generator.generate(Generator.java:3657)org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:256)org.apache.jasper.compiler.Compiler.compile(Compiler.java:384)org.apache.jasper.compiler.Compiler.compile(Compiler.java:361)org.apache.jasper.compiler.Compiler.compile(Compiler.java:345)org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:603)org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369)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:741)org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

Note The full stack trace of the root cause is available in the server logs.

Apache Tomcat/9.0.0.M26

阅读全文

0 0