dear all
i have a problem about jsp. follow is my code:
##############################################
//there are some other lines ,but haven't using the "Out" object.
if (flag) {
out.println("ok");
response.sendRedirect("club/register_club_success.htm");
}else{
response.sendRedirect("/club/register_club_error.htm");
}
######################################################
But sometimes it doesn't work ! my tomcat server issue some errors:
#####################################
Internal Servlet Error:
java.lang.IllegalStateException: Cannot forward as OutputStream or Writer has already
been obtained
at
org.apache.tomcat.core.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:130)
at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:357)
at
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:381)
at
jsp._0002fjsp_0002fsave_0005fprofile_0002ejspsave_0005fprofile_jsp_6._jspService(_0002fjsp_0002fsave_0005fprofile_0002ejspsave_0005fprofile_jsp_6.java,
Compiled Code)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java, Compiled
Code)
at javax.servlet.http.HttpServlet.service(HttpServlet.java, Compiled Code)
at
org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(JspServlet.java,
Compiled Code)
at org.apache.jasper.runtime.JspServlet.serviceJspFile(JspServlet.java,
Compiled Code)
at org.apache.jasper.runtime.JspServlet.service(JspServlet.java, Compiled Code)
at javax.servlet.http.HttpServlet.service(HttpServlet.java, Compiled Code)
at org.apache.tomcat.core.ServletWrapper.handleRequest(ServletWrapper.java,
Compiled Code)
at org.apache.tomcat.core.ContextManager.service(ContextManager.java, Compiled
Code)
at
org.apache.tomcat.service.connector.Ajp12ConnectionHandler.processConnection(Ajp12ConnectionHandler.java,
Compiled Code)
at org.apache.tomcat.service.TcpConnectionThread.run(SimpleTcpEndpoint.java,
Compiled Code)
at java.lang.Thread.run(Thread.java, Compiled Code)
##########################################################
Can anybody help me? thanks in advance!
ahfei
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