请问这是怎么回事?我在java文件里写个main执行没事,为什么在jsp里会出面这样的错误?说我jsp的类没有编译!org.apache.jasper.JasperException: Unable to compile class for JSPAn error occurred at line: 20 in the jsp file: /user/list.jsp
Generated servlet error:
C:\Program Files\tomcat\work\Catalina\localhost\_\org\apache\jsp\user\list_jsp.java:68: 无法访问 org.hibernate.HibernateException
找不到文件 org\hibernate\HibernateException.class
list = h.query("from AdUserinfo"); ^
1 错误org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:332)
org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:412)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:472)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)jsp的部分代码如下:<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="Action.Dao.Hdao" %>
<%@ page import="Bean.AdUserinfo" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>用户列表</title> <meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="user list">
</head>
<body>
<%
List list = null;
Hdao h = new Hdao();
list = h.query("from AdUserinfo");
for(int i=0;i<list.size();i++){
AdUserinfo user = (AdUserinfo) list.get(i);
out.println(user.getUsername());
}
%>
</body>
</html>
Generated servlet error:
C:\Program Files\tomcat\work\Catalina\localhost\_\org\apache\jsp\user\list_jsp.java:68: 无法访问 org.hibernate.HibernateException
找不到文件 org\hibernate\HibernateException.class
list = h.query("from AdUserinfo"); ^
1 错误org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:332)
org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:412)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:472)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)jsp的部分代码如下:<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="Action.Dao.Hdao" %>
<%@ page import="Bean.AdUserinfo" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>用户列表</title> <meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="user list">
</head>
<body>
<%
List list = null;
Hdao h = new Hdao();
list = h.query("from AdUserinfo");
for(int i=0;i<list.size();i++){
AdUserinfo user = (AdUserinfo) list.get(i);
out.println(user.getUsername());
}
%>
</body>
</html>
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
org.apache.jsp.user.list_jsp._jspService(list_jsp.java:74)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause java.lang.NoClassDefFoundError: org/hibernate/Session
org.apache.jsp.user.list_jsp._jspService(list_jsp.java:64)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.
这种问题很明显,你去了... list = h.query("from AdUserinfo");
它就有错 那这个问题从哪儿来的呢?Session 在哪儿用过?追根还不是你在Hdao里面写关于
操作数据库的语句.
所以你仔细查看