Re: Embedded Tomcat error (tomcat 5.5.4)

[Vy Ho]

Yes, I see this error before myself, and did the same tracing.  Instead 
of patching the code, I just created the connector externally (instead 
of calling createConnector). That may not be the right thing to do 
though.  Strangely that so many things that works with the version 5.028 
is broken in 5.5.4 (in term of source compatibility).  I think the 
problem with developers is lack of concrete documentation on this area.  
I am not sure if there is anything that I missed, but I couldn't find 
much information, other than API.  Searching the web, you'll find a few 
tutorials on how to do this. However, these stuff are very basic, and 
all based on 5.0x versions.  I am afraid of the amount of testing and 
the number of people is using the embedded is low.  If an "http" 
protocal is missed from an http web container, then what else could be 
missed?

Peik Feng wrote:
Hi,
 I'm getting the following error when trying to run Embedded tomcat
v5.5.4 (I have modified Embedded.java to print out the error)
java.lang.NullPointerException
       at org.apache.tomcat.util.IntrospectionUtils.setProperty(IntrospectionUt
ils.java:267)
       at org.apache.catalina.startup.Embedded.createConnector(Embedded.java:41
6)
       at org.apache.catalina.startup.Embedded.createConnector(Embedded.java:35
7)
 When I furthur trace Embedded.java, I found that the error is cause
by the following if else statement where it do not consider the case
for protocol.equals("http"), causing connector remain as null
public Connector createConnector(String address, int port,
                                     String protocol) {
...
           if (protocol.equals("ajp")) {
               connector = new
Connector("org.apache.jk.server.JkCoyoteHandler");
           } else if (protocol.equals("memory")) {
               connector = new
Connector("org.apache.coyote.memory.MemoryProtocolHandler");
           } else if (protocol.equals("https")) {
               connector = new Connector();
               connector.setScheme("https");
               connector.setSecure(true);
               // FIXME !!!! SET SSL PROPERTIES
           }
...
}
 As a workaround, I have added the following and it works properly: 

else if (protocol.equals("http")) {
               connector = new Connector();
               connector.setScheme("http");
               connector.setSecure(false);
           }
 Hope to get advice from all tomcat user regarding the issue and the
resolution.
 Thank you
 


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