Sharath,
Thanks for the info, but I tried this scenario and produced the same results.
Thank you!
Evan
[EMAIL PROTECTED] wrote:
>
>
>
> Evan,
>
> Is your setter method for url getting called with a null value? If so, then
> your instance variable "url" will reference null instead of an empty string.
>
> If you change you setter to
>
> public void setUrl( String url ) {
> if(url != null)
> this.url = url;
> else
> this.url = "";
> }
>
> it should fix the problem. I haven't tried this solution however.
>
> Sharath
>
> Hello all,
>
> I have encountered another possible bug - 0.8.0.
>
> I have created a TagSupport object and an associated TagExtraInfo object. I
> have two attributes for the tag - "id" and "url". In the taglib descriptor file
> taglib.tld, attribute "id" is set as required, "url" is not required.
>
> In the .jsp file the following works fine:
>
> <test:testtag id="xyz" url="abc" />
>
> However, if I do not specify the optional attribute "url":
>
> <test:testtag id="xyz" />
>
> the following exception is thrown:
>
> =================================
> 500 Internal Server Error
>
> java.lang.NullPointerException
> at java.util.Hashtable.put(Hashtable.java, Compiled Code)
> at cs.ka(JAX, Compiled Code)
> at cs.i1(JAX, Compiled Code)
> at com.evermind.server.http.JSPPage.i1(JAX)
> at com.evermind.server.http.HttpApplication.ll(JAX)
> at com.evermind.server.http.HttpApplication.l7(JAX)
> at com.evermind.server.http.JSPServlet.service(JAX)
> at cm.i_(JAX)
> at cm.forward(JAX)
> at cw.ky(JAX, Compiled Code)
> at c.run(JAX, Compiled Code)
> =================================
>
> No reference to the "url" attribute is made in my TagExtraInfo object.
>
> Once again, if I am doing something wrong, please advise.
>
> Thanks for any help!
>
> Evan Vaala
>
> Here is my code:
>
> =================TestTag.java=====================
> package taglib;
> import javax.servlet.jsp.*;
> import javax.servlet.jsp.tagext.*;
> import javax.servlet.ServletRequest;
>
> public class TestTag extends TagSupport
> {
> private String id="";
> private String url="";
>
> public TestTag() {
> super();
> }
>
> public void setId( String id ) {
> this.id = id;
> }
>
> public void setUrl( String url ) {
> this.url = url;
> }
>
> public int doStartTag() throws JspError {
> String st = this.url;
> pageContext.setAttribute( id, st );
> return SKIP_BODY;
> }
>
> }
>
> =================TestTagExtraInfo.java=========================
> package taglib;
> import javax.servlet.jsp.tagext.*;
>
> public class TestTagExtraInfo extends TagExtraInfo
> {
> public TestTagExtraInfo()
> {
> super();
> }
>
> public VariableInfo[] getVariableInfo(TagData data)
> {
> return new VariableInfo[]
> {
> new VariableInfo(data.getAttributeString("id"),
> "java.lang.String",
> true,
> VariableInfo.AT_END),
> };
> }
>
> } // TurboBufferTagExtraInfo
>
> ===============taglib.tld - testtag section===========
> <tag>
> <name>testtag</name>
> <tagclass>taglib.TestTag</tagclass>
> <teiclass>taglib.TestTagExtraInfo</teiclass>
> <bodycontent>none</bodycontent>
> <info>A demo loop tag</info>
>
> <attribute>
> <name>id</name>
> <required>true</required>
> <rtexprvalue>true</rtexprvalue>
> </attribute>
> <attribute>
> <name>url</name>
> <required>false</required>
> <rtexprvalue>true</rtexprvalue>
> </attribute>
> </tag>
