帮忙。。。。。怎么跳转不过去啊
<%@page contentType= "text/html; charset=gb2312 " language= "java " import= "java.sql.* " errorPage= " " %>
<jsp:useBean id= "feng " scope= "page " class= "feng.Jdbc " />
<%
String User_Name=request.getParameter( "username ");
String Pass_Word=request.getParameter( "password ");
if ((User_Name.equals( " ")) || (Pass_Word.equals( " ")))
response.sendRedirect( "err.jsp?id=1 ");
else
{
Connection con=feng.getConn();
Statement stmt=con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);
ResultSet rs=null;
String sql= "Select * From admin Where username= ' "+User_Name+ " ' And password= ' "+Pass_Word+ " ' ";
rs=stmt.executeQuery(sql);
rs.last();
if (rs.getRow()> 0)
{
session.putValue( "UserName ",User_Name);
if (rs.getInt( "qx ")==1) {
session.putValue( "admin ", "ok ");
///response.sendRedirect( "admin.jsp ");
%>
<jsp:forward page= "admin.jsp "/>
<%
}
else {
response.sendRedirect( "info.jsp?id= "+User_Name);
}
// <a href= "javascript:history.go(-1) "> </a>
}
else {
response.sendRedirect( "err.jsp?id=2 ");
}
try {
rs.close();
stmt.close();
con.close();
}
catch (Exception ex) {
System.out.println(ex);
ex.printStackTrace();
}
}
%>
跳转就出错
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Unable to compile class for JSP
No Java compiler was found to compile the generated source for the JSP.
This can usually be solved by copying manually $JAVA_HOME/lib/tools.jar from the JDK
to the common/lib directory of the Tomcat server, followed by a Tomcat restart.
If using an alternate Java compiler, please check its installation and access path.
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:128)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:351)
org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:413)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:453)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:437)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:555)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:291)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
note The full stack trace of the root cause is available in the Tomcat logs.
[解决办法]
抛出的异常已经很清楚了 是tools.jar文件的缘故 解决办法也提示的很清楚 就是把你安装的jdk下的lib/tools.jar 文件拷贝到tomcat下的common/lib文件夹下即可
出现这个异常的原因估计是你的jdk版本和tomcat需求版本不一样 照上面的方法解决应该可以的
但最好是下载与你使用的tomcat匹配的jdk
我的异常网推荐解决方案：The server encountered an internal error () that prevented it from fulfilling this request.,http://www.myexception.cn/java-web/317.html
我的异常网推荐解决方案：org.apache.jasper.JasperException: Unable to compile class,http://www.myexception.cn/j2ee/2308.html
