Re: getPageParameters() NullPointer
Hi, I was actually trying to use getPageParameters() as well, and it was returning null too... The reason I want to use it is, I have a base page which adds a context panel fragment in the page, which it gets by an abstract method getContextPanel(). Now in the sub page I wanted to use the state that was set in the constructor using the page parameters to build my context panel. But this does not work: the constructor of my sub page has not been called yet... the stack is: MyPage.getContextPanel() BasePage.init() MyPage.init(PageParams params) So I figured, I'd use getPageParams() in my context panel and explicitly initialize the state as a (very ugly) workaround. (If we get multiple wicket:child in 1.4 this problem is completely and nicely solved). If anybody knows a nicer way to work around this, let me know. (I'm actually against using overridable methods in constructors... but I see no alternative). Anyway, checking the source code I noticed why getPageParams() returned null... I didn't do a super() call to my BasePage with the parameters, which in turn didn't do super() call to WebPage with the parameters... I just expected it to work. :-) Maybe it would be useful to explicitly state in the getPageParams() method JavaDoc that you explicitly need to call the super() with the page parameters. :-) Regards, Sebastiaan Martijn Dashorst wrote: OK, hangon... You need to define a constructor *taking* a pageparameters object. In that object you can find the parameters. Martijn On 1/22/08, Martijn Dashorst [EMAIL PROTECTED] wrote: Stating the obvious, but did you check if the parameter was actually present in the URL? Martijn On 1/22/08, Stephan Koch [EMAIL PROTECTED] wrote: Hi all, I'm experiencing a problem using getPageParameters(). The parameter id is passed to MyPage: setResponsePage(MyPage.class, new PageParameters(id=+evalId)); In the constructor of MyPage I try to access the parameter id: Integer evalId = Integer.parseInt(getPageParameters().getKey(id)); This fails with a NullPointerException. I thought the usage of PageParameters was pretty straightforward- did I miss something here? I'm using Wicket 1.3. Regards, Stephan - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- Buy Wicket in Action: http://manning.com/dashorst Apache Wicket 1.3.0 is released Get it now: http://www.apache.org/dyn/closer.cgi/wicket/1.3.0 smime.p7s Description: S/MIME Cryptographic Signature
Re: getPageParameters() NullPointer
in FirstLogin.java --- PageParameters params = new PageParameters(); System.out.print(pid= + params.getKey(pid));--the output is null;how to get the parameter? What are you doing here exactly? Are you creating the PageParameters yourself?? in the FirstLogin page? That is wrong. You should use the PageParameter constructor johan
RE: getPageParameters() NullPointer
Stephan, what you want is not PageParameters.getKey(id), but PageParameters.getInt(id); @zhangjunfeng: PageParameters params = new PageParameters(); System.out.print(pid= + params.getKey(pid));--the output is null yes, the output is null, you just created a new, empty page parameters object. use Page.getPageParameters() Thomas -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Mittwoch, 5. März 2008 10:31 To: users@wicket.apache.org Subject: Re:getPageParameters() NullPointer hello,i got the same problem. PageParameters params = new PageParameters(); params.put(pid, pid); this.setResponsePage(FirstLogin.class, new PageParameters(params)); in FirstLogin.java --- PageParameters params = new PageParameters(); System.out.print(pid= + params.getKey(pid));--the output is null;how to get the parameter? 在2008-01-22，Stephan Koch [EMAIL PROTECTED] 写道： Hi all, I'm experiencing a problem using getPageParameters(). The parameter id is passed to MyPage: setResponsePage(MyPage.class, new PageParameters(id=+evalId)); In the constructor of MyPage I try to access the parameter id: Integer evalId = Integer.parseInt(getPageParameters().getKey(id)); This fails with a NullPointerException. I thought the usage of PageParameters was pretty straightforward- did I miss something here? I'm using Wicket 1.3. Regards, Stephan - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re:RE: getPageParameters() NullPointer
thanks,but there is no method of Page.getPageParameters(), how to use it ? may you show me in detial ? Stephan, what you want is not PageParameters.getKey(id), but PageParameters.getInt(id); PageParameters params = new PageParameters(); System.out.print(pid= + params.getKey(pid));--the output is null yes, the output is null, you just created a new, empty page parameters object. use Page.getPageParameters() Thomas Sent: Mittwoch, 5. März 2008 10:31 To: users@wicket.apache.org Subject: Re:getPageParameters() NullPointer hello,i got the same problem. PageParameters params = new PageParameters(); params.put(pid, pid); this.setResponsePage(FirstLogin.class, new PageParameters(params)); in FirstLogin.java --- PageParameters params = new PageParameters(); System.out.print(pid= + params.getKey(pid));--the output is null;how to get the parameter? Hi all, I'm experiencing a problem using getPageParameters(). The parameter id is passed to MyPage: setResponsePage(MyPage.class, new PageParameters(id=+evalId)); In the constructor of MyPage I try to access the parameter id: Integer evalId = Integer.parseInt(getPageParameters().getKey(id)); This fails with a NullPointerException. I thought the usage of PageParameters was pretty straightforward- did I miss something here? I'm using Wicket 1.3. Regards, Stephan - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: RE: getPageParameters() NullPointer
Yes there is, it's in Page.java at line 319 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Donnerstag, 6. März 2008 03:11 To: users@wicket.apache.org Subject: Re:RE: getPageParameters() NullPointer thanks,but there is no method of Page.getPageParameters(), how to use it ? may you show me in detial ? Stephan, what you want is not PageParameters.getKey(id), but PageParameters.getInt(id); PageParameters params = new PageParameters(); System.out.print(pid= + params.getKey(pid));--the output is null yes, the output is null, you just created a new, empty page parameters object. use Page.getPageParameters() Thomas Sent: Mittwoch, 5. März 2008 10:31 To: users@wicket.apache.org Subject: Re:getPageParameters() NullPointer hello,i got the same problem. PageParameters params = new PageParameters(); params.put(pid, pid); this.setResponsePage(FirstLogin.class, new PageParameters(params)); in FirstLogin.java --- PageParameters params = new PageParameters(); System.out.print(pid= + params.getKey(pid));--the output is null;how to get the parameter? Hi all, I'm experiencing a problem using getPageParameters(). The parameter id is passed to MyPage: setResponsePage(MyPage.class, new PageParameters(id=+evalId)); In the constructor of MyPage I try to access the parameter id: Integer evalId = Integer.parseInt(getPageParameters().getKey(id)); This fails with a NullPointerException. I thought the usage of PageParameters was pretty straightforward- did I miss something here? I'm using Wicket 1.3. Regards, Stephan - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
getPageParameters() NullPointer
Hi all, I'm experiencing a problem using getPageParameters(). The parameter id is passed to MyPage: setResponsePage(MyPage.class, new PageParameters(id=+evalId)); In the constructor of MyPage I try to access the parameter id: Integer evalId = Integer.parseInt(getPageParameters().getKey(id)); This fails with a NullPointerException. I thought the usage of PageParameters was pretty straightforward- did I miss something here? I'm using Wicket 1.3. Regards, Stephan - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: getPageParameters() NullPointer
Stating the obvious, but did you check if the parameter was actually present in the URL? Martijn On 1/22/08, Stephan Koch [EMAIL PROTECTED] wrote: Hi all, I'm experiencing a problem using getPageParameters(). The parameter id is passed to MyPage: setResponsePage(MyPage.class, new PageParameters(id=+evalId)); In the constructor of MyPage I try to access the parameter id: Integer evalId = Integer.parseInt(getPageParameters().getKey(id)); This fails with a NullPointerException. I thought the usage of PageParameters was pretty straightforward- did I miss something here? I'm using Wicket 1.3. Regards, Stephan - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- Buy Wicket in Action: http://manning.com/dashorst Apache Wicket 1.3.0 is released Get it now: http://www.apache.org/dyn/closer.cgi/wicket/1.3.0
Re: getPageParameters() NullPointer
OK, hangon... You need to define a constructor *taking* a pageparameters object. In that object you can find the parameters. Martijn On 1/22/08, Martijn Dashorst [EMAIL PROTECTED] wrote: Stating the obvious, but did you check if the parameter was actually present in the URL? Martijn On 1/22/08, Stephan Koch [EMAIL PROTECTED] wrote: Hi all, I'm experiencing a problem using getPageParameters(). The parameter id is passed to MyPage: setResponsePage(MyPage.class, new PageParameters(id=+evalId)); In the constructor of MyPage I try to access the parameter id: Integer evalId = Integer.parseInt(getPageParameters().getKey(id)); This fails with a NullPointerException. I thought the usage of PageParameters was pretty straightforward- did I miss something here? I'm using Wicket 1.3. Regards, Stephan - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- Buy Wicket in Action: http://manning.com/dashorst Apache Wicket 1.3.0 is released Get it now: http://www.apache.org/dyn/closer.cgi/wicket/1.3.0 -- Buy Wicket in Action: http://manning.com/dashorst Apache Wicket 1.3.0 is released Get it now: http://www.apache.org/dyn/closer.cgi/wicket/1.3.0
AW: getPageParameters() NullPointer
Yes, the parameter is present. The URL looks like http://localhost:9080/myapp/app/?wicket:bookmarkablePage=%3Axxx.xxx.xxx.wick et.MyPageid=135 -Ursprüngliche Nachricht- Von: Martijn Dashorst [mailto:[EMAIL PROTECTED] Gesendet: Dienstag, 22. Januar 2008 12:13 An: users@wicket.apache.org Betreff: Re: getPageParameters() NullPointer Stating the obvious, but did you check if the parameter was actually present in the URL? Martijn On 1/22/08, Stephan Koch [EMAIL PROTECTED] wrote: Hi all, I'm experiencing a problem using getPageParameters(). The parameter id is passed to MyPage: setResponsePage(MyPage.class, new PageParameters(id=+evalId)); In the constructor of MyPage I try to access the parameter id: Integer evalId = Integer.parseInt(getPageParameters().getKey(id)); This fails with a NullPointerException. I thought the usage of PageParameters was pretty straightforward- did I miss something here? I'm using Wicket 1.3. Regards, Stephan - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- Buy Wicket in Action: http://manning.com/dashorst Apache Wicket 1.3.0 is released Get it now: http://www.apache.org/dyn/closer.cgi/wicket/1.3.0 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
AW: getPageParameters() NullPointer
That was easy ;) Thanks for your help. Stephan -Ursprüngliche Nachricht- Von: Martijn Dashorst [mailto:[EMAIL PROTECTED] Gesendet: Dienstag, 22. Januar 2008 12:13 An: users@wicket.apache.org Betreff: Re: getPageParameters() NullPointer OK, hangon... You need to define a constructor *taking* a pageparameters object. In that object you can find the parameters. Martijn On 1/22/08, Martijn Dashorst [EMAIL PROTECTED] wrote: Stating the obvious, but did you check if the parameter was actually present in the URL? Martijn On 1/22/08, Stephan Koch [EMAIL PROTECTED] wrote: Hi all, I'm experiencing a problem using getPageParameters(). The parameter id is passed to MyPage: setResponsePage(MyPage.class, new PageParameters(id=+evalId)); In the constructor of MyPage I try to access the parameter id: Integer evalId = Integer.parseInt(getPageParameters().getKey(id)); This fails with a NullPointerException. I thought the usage of PageParameters was pretty straightforward- did I miss something here? I'm using Wicket 1.3. Regards, Stephan - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- Buy Wicket in Action: http://manning.com/dashorst Apache Wicket 1.3.0 is released Get it now: http://www.apache.org/dyn/closer.cgi/wicket/1.3.0 -- Buy Wicket in Action: http://manning.com/dashorst Apache Wicket 1.3.0 is released Get it now: http://www.apache.org/dyn/closer.cgi/wicket/1.3.0 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
