<%@ page contentType="text/html;charset=GB2312" %>
<%@ page import="java.util.*" %>
<%@ page import="java.lant.*" %>
<html>
<body bgcolor=cyan><font size=1>
<%! double sum=0,i=1,j=1;
logn number=0;
synchronized void PI()
{
number++;
sum=sum+i/j;
j=j+2;
i=-i;
}
%>
<%
帮助计算PI();
%>
<p>你是第 <%=number%>个访问本站的客户
<BR>
<p>计算PI的值为<%=sum*4%>
</body>
</html>
我写的一个问题
却报了如下的错误请各位指教
type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception org.apache.jasper.JasperException: Unable to load class for JSP
org.apache.jasper.JspCompilationContext.load(JspCompilationContext.java:598)
org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:137)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:305)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause java.lang.ClassNotFoundException: org.apache.jsp.myapp.example2_005f6_jsp
java.net.URLClassLoader$1.run(Unknown Source)
java.security.AccessController.doPrivileged(Native Method)
java.net.URLClassLoader.findClass(Unknown Source)
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:133)
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:65)
org.apache.jasper.JspCompilationContext.load(JspCompilationContext.java:596)
org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:137)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:305)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
<%@ page import="java.util.*" %>
<%@ page import="java.lant.*" %>
<html>
<body bgcolor=cyan><font size=1>
<%! double sum=0,i=1,j=1;
logn number=0;
synchronized void PI()
{
number++;
sum=sum+i/j;
j=j+2;
i=-i;
}
%>
<%
帮助计算PI();
%>
<p>你是第 <%=number%>个访问本站的客户
<BR>
<p>计算PI的值为<%=sum*4%>
</body>
</html>
我写的一个问题
却报了如下的错误请各位指教
type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception org.apache.jasper.JasperException: Unable to load class for JSP
org.apache.jasper.JspCompilationContext.load(JspCompilationContext.java:598)
org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:137)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:305)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause java.lang.ClassNotFoundException: org.apache.jsp.myapp.example2_005f6_jsp
java.net.URLClassLoader$1.run(Unknown Source)
java.security.AccessController.doPrivileged(Native Method)
java.net.URLClassLoader.findClass(Unknown Source)
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:133)
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:65)
org.apache.jasper.JspCompilationContext.load(JspCompilationContext.java:596)
org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:137)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:305)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
Generated servlet error:
logn cannot be resolved to a typeAn error occurred at line: 6 in the jsp file: /myapp/example2_6.jsp
Generated servlet error:
number cannot be resolvedAn error occurred at line: 16 in the jsp file: /myapp/example2_6.jsp
Generated servlet error:
The method 帮助计算PI() is undefined for the type example2_005f6_jspAn error occurred at line: 19 in the jsp file: /myapp/example2_6.jsp
Generated servlet error:
number cannot be resolved
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:328)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:409)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:288)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:267)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:255)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:563)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:293)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)错误信息
帮助计算PI();
%>
注释符号不是这样写的,
<%
//帮助计算
PI();
%>