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Posted to taglibs-dev@jakarta.apache.org by Torgeir Veimo <to...@vertech.no> on 2001/03/01 13:24:26 UTC
jndi taglib problem
Is the jndi taglib ready for use?
I've tried resolving a problem with the jndi taglib without result. I
try to use it within the embedded tomcat engine in netbeans.
I have a very simple jsp page with useContext.
<%@ taglib uri="http://jakarta.apache.org/taglibs/jndi" prefix="jndi" %>
<HTML>
<HEAD><TITLE>List by URL example</TITLE></HEAD>
<BODY>
<jndi:useContext id='test' scope='page'
url='ldap://192.168.75.163:389'/>
</BODY>
</HTML>
The exception seems to come from the fact that the id is not picked up.
It occurs in the generated code in the line that looks like
if (_jspx_th_jndi_useContext_0.doEndTag() == Tag.SKIP_PAGE)
return;
I have included the exception and the generated code below.
Any help is appreciated, as I'm starting to think that taglibs are not
the way to go.
Starting tomcat. Check logs/tomcat.log for error messages
No webapps/ directory C:\java\netbeans\temp\tomcat\webapps
2001-03-01 01:20:12 - Ctx( ): Exception in: R( + /examples/listurl.jsp
+ null) - javax.servlet.ServletException
at
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:459)
at
examples._0002fexamples_0002flisturl_0002ejsplisturl_jsp_0._jspService(_0002fexamples_0002flisturl_0002ejsplisturl_jsp_0.java:123)
at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:177)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:318)
at
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:391)
at
org.netbeans.modules.web.core.execution.JspServlet.service(JspServlet.java:75)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
at org.apache.tomcat.core.Handler.service(Handler.java:286)
at
org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:210)
at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
at java.lang.Thread.run(Thread.java:484)
Root cause:
java.lang.NullPointerException
at java.util.Hashtable.put(Hashtable.java:380)
at
org.apache.jasper.runtime.PageContextImpl.setAttribute(PageContextImpl.java:258)
at
org.apache.taglibs.jndi.UseContextTag.doEndTag(UseContextTag.java:406)
at
examples._0002fexamples_0002flisturl_0002ejsplisturl_jsp_0._jspService(_0002fexamples_0002flisturl_0002ejsplisturl_jsp_0.java:95)
at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:177)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:318)
at
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:391)
at
org.netbeans.modules.web.core.execution.JspServlet.service(JspServlet.java:75)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
at org.apache.tomcat.core.Handler.service(Handler.java:286)
at
org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:210)
at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
at java.lang.Thread.run(Thread.java:484)
package examples;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
import java.io.PrintWriter;
import java.io.IOException;
import java.io.FileInputStream;
import java.io.ObjectInputStream;
import java.util.Vector;
import org.apache.jasper.runtime.*;
import java.beans.*;
import org.apache.jasper.JasperException;
public class _0002fexamples_0002flisturl_0002ejsplisturl_jsp_0 extends
HttpJspBase {
static {
}
public _0002fexamples_0002flisturl_0002ejsplisturl_jsp_0( ) {
}
private static boolean _jspx_inited = false;
public final void _jspx_init() throws JasperException {
}
public void _jspService(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
JspFactory _jspxFactory = null;
PageContext pageContext = null;
HttpSession session = null;
ServletContext application = null;
ServletConfig config = null;
JspWriter out = null;
Object page = this;
String _value = null;
try {
if (_jspx_inited == false) {
_jspx_init();
_jspx_inited = true;
}
_jspxFactory = JspFactory.getDefaultFactory();
response.setContentType("text/html;charset=8859_1");
pageContext = _jspxFactory.getPageContext(this, request,
response,
"", true, 8192, true);
application = pageContext.getServletContext();
config = pageContext.getServletConfig();
session = pageContext.getSession();
out = pageContext.getOut();
// HTML // begin
[file="C:\\java\\webapps\\ldap\\examples\\listurl.jsp";from=(0,72);to=(7,0)]
MappedCharData
out.write("\r\n");
out.write("\r\n");
out.write("\r\n");
out.write("<HTML>\r\n");
out.write("<HEAD><TITLE>List by URL
example</TITLE></HEAD>\r\n");
out.write("<BODY>\r\n");
out.write("\r\n");
out.write("");
// end
// begin
[file="C:\\java\\webapps\\ldap\\examples\\listurl.jsp";from=(7,0);to=(7,73)]
TagBegin
/* ---- jndi:useContext ---- */
org.apache.taglibs.jndi.UseContextTag
_jspx_th_jndi_useContext_0 = new
org.apache.taglibs.jndi.UseContextTag();
_jspx_th_jndi_useContext_0.setPageContext(pageContext);
_jspx_th_jndi_useContext_0.setParent(null);
_jspx_th_jndi_useContext_0.setUrl("ldap://192.168.75.163:389");
_jspx_th_jndi_useContext_0.setId("test");
_jspx_th_jndi_useContext_0.setScope("page");
try {
int _jspx_eval_jndi_useContext_0 =
_jspx_th_jndi_useContext_0.doStartTag();
if (_jspx_eval_jndi_useContext_0 ==
Tag.EVAL_BODY_INCLUDE)
throw new JspTagException("Since tag handler
class org.apache.taglibs.jndi.UseContextTag implements BodyTag, it can't
return Tag.EVAL_BODY_INCLUDE");
if (_jspx_eval_jndi_useContext_0 != Tag.SKIP_BODY) {
try {
if (_jspx_eval_jndi_useContext_0 !=
Tag.EVAL_BODY_INCLUDE) {
out = pageContext.pushBody();
_jspx_th_jndi_useContext_0.setBodyContent((BodyContent) out);
}
_jspx_th_jndi_useContext_0.doInitBody();
do {
// end
// begin
[file="C:\\java\\webapps\\ldap\\examples\\listurl.jsp";from=(7,0);to=(7,73)]
TagEnd
} while
(_jspx_th_jndi_useContext_0.doAfterBody() == BodyTag.EVAL_BODY_TAG);
} finally {
if (_jspx_eval_jndi_useContext_0 !=
Tag.EVAL_BODY_INCLUDE)
out = pageContext.popBody();
}
}
if (_jspx_th_jndi_useContext_0.doEndTag() ==
Tag.SKIP_PAGE)
return;
} finally {
_jspx_th_jndi_useContext_0.release();
}
javax.naming.Context test = null;
test = (javax.naming.Context)
pageContext.findAttribute("test");
// end
// HTML // begin
[file="C:\\java\\webapps\\ldap\\examples\\listurl.jsp";from=(7,73);to=(9,0)]
MappedCharData
out.write("\r\n");
out.write("\r\n");
out.write("");
// end
// begin
[file="C:\\java\\webapps\\ldap\\examples\\listurl.jsp";from=(9,2);to=(11,0)]
Scriptlet
//System.out.println("context is: " +
test.toString());
// end
// HTML // begin
[file="C:\\java\\webapps\\ldap\\examples\\listurl.jsp";from=(11,2);to=(15,0)]
MappedCharData
out.write("\r\n");
out.write("\r\n");
out.write("</BODY>\r\n");
out.write("</HTML>\r\n");
out.write("");
// end
} catch (Exception ex) {
if (out.getBufferSize() != 0)
out.clearBuffer();
pageContext.handlePageException(ex);
} finally {
out.flush();
_jspxFactory.releasePageContext(pageContext);
}
}
}
--
- Torgeir