Why there is no getHeader(String headerName) and getHeaders() met hod in HttpServletResponse?
Folks, this may be an off topic question, but I am curious to understand why. We know that Http protocol has features such as Headers. Both response and request have HTTP headers. It is easy to get the headers in J2EE from a HttpServletRequest objects using getHeader() and/or getHeaders() methods, however, there is no corresponding methods in HttpServletResponse. What is the reasoning behind this design? Thanks. Larry Zhang - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Why there is no getHeader(String headerName) and getHeaders() met hod in HttpServletResponse?
Richard, Thanks for your answers. I think that makes great sense; though I still think to have getHeader() or getHeaders() may be helpful when doing debug for response object. Larry -Original Message- From: Richard Yee [mailto:[EMAIL PROTECTED] Sent: Friday, March 26, 2004 12:06 PM To: Struts Users Mailing List Subject: Re: Why there is no getHeader(String headerName) and getHeaders() met hod in HttpServletResponse? Larry, I'll go out on a limb here and say that since the response is being generated on the server by a servlet or JSP, there is no need for getHeader() or getHeaders() methods because the developer is setting them. The HttpServletResponse interface has addHeader() and addXXXHeader() methods to add headers to the response. There is also the containsHeader() method which returns a boolean. -Richard --- Zhang, Larry (L.) [EMAIL PROTECTED] wrote: Folks, this may be an off topic question, but I am curious to understand why. We know that Http protocol has features such as Headers. Both response and request have HTTP headers. It is easy to get the headers in J2EE from a HttpServletRequest objects using getHeader() and/or getHeaders() methods, however, there is no corresponding methods in HttpServletResponse. What is the reasoning behind this design? Thanks. Larry Zhang - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] __ Do you Yahoo!? Yahoo! Finance Tax Center - File online. File on time. http://taxes.yahoo.com/filing.html - 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]
RE: declaring action mappings at runtime
If you want to find out which will be next page to go, you can create an ActionForward object and customize the parameter. -Original Message- From: Martin Cooper [mailto:[EMAIL PROTECTED] Sent: Wednesday, October 29, 2003 3:35 PM To: [EMAIL PROTECTED] Subject: Re: declaring action mappings at runtime Ahmet ISIK [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Hi, Is it possible to declare struts action mappings at runtime, and how? No, it's not possible. The config is read in at application startup and is then frozen. (The reason it's done this way is so that access to the config does not need to be synchronised once the app is up and running, thus leading to much improved overall performance.) -- Martin Cooper Thanks in advance -- Ahmet ISIK Ideal Teknoloji Bilisim Çözümleri A.S.- Iliskisel Is Kanali Yazilim Muhendisi http://www.idealteknoloji.com - 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]
configure default error page in web.xml
HI, I have a request to catch a Java Exception in the servlet and display an error page. The functionality requires that we display different error message for different exception. A way to do this is to put try and catch logic in servlet, and if an Exception is caught, I do request.setAttribute(javax.servlet.jsp.jspExcetion,e), and then forward to jsp error page, where we check the type of exception implicit object. Based on this type, we display different error message. This is fine, but we are not going to use this approach. The other way is to configure web.xml. We can configure an error page for specific Java exception. If the specific exception is raised to the web container, the configured error page will get called. My question is that is there any body doing this way successfully? Thanks. Larry Zhang - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: configure default error page in web.xml
I am thinking not to use struts. I have this in my web.xml, but when there is an Exception in servlet, I couldn't see the error page as expected. Did you guys have any luck to have this work? Thanks. error-page exception-typejava.lang.Exception/exception-type locationerror.jsp/location /error-page -Original Message- From: Kris Schneider [mailto:[EMAIL PROTECTED] Sent: Tuesday, September 30, 2003 4:02 PM To: Struts Users Mailing List Subject: RE: configure default error page in web.xml You can certainly combine approaches to let a Struts action handle pretty much any exception in the app. In web.xml: error-page exception-typejava.lang.Exception/exception-type location/do/error/location /error-page Where /do/error is obviously a Struts action mapping path. Quoting Mike Jasnowski [EMAIL PROTECTED]: It's too bad you couldn't forward that to an Action, which could then forward it to a custom page, or rethrow so a Struts exception handler could grab it. -Original Message- From: Zhang, Larry (L.) [mailto:[EMAIL PROTECTED] Sent: Tuesday, September 30, 2003 3:13 PM To: Struts Users Mailing List Subject: configure default error page in web.xml HI, I have a request to catch a Java Exception in the servlet and display an error page. The functionality requires that we display different error message for different exception. A way to do this is to put try and catch logic in servlet, and if an Exception is caught, I do request.setAttribute(javax.servlet.jsp.jspExcetion,e), and then forward to jsp error page, where we check the type of exception implicit object. Based on this type, we display different error message. This is fine, but we are not going to use this approach. The other way is to configure web.xml. We can configure an error page for specific Java exception. If the specific exception is raised to the web container, the configured error page will get called. My question is that is there any body doing this way successfully? Thanks. Larry Zhang -- Kris Schneider mailto:[EMAIL PROTECTED] D.O.Tech http://www.dotech.com/ - 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]
error page
I am using struts 1.1b3. When the validation fails, the error can be shown on the page using html:errors. Now I have an action form page(say book.jsp, on this page there is a required field-- book title), I want an error.jsp, when the validation (example, title field is null) fails, the error page is invoked. I tried to define a forward attribute in struts-config.xml and put the target of it as the error.jsp, but struts still shows the action form page (book.jsp) when validation fails. However, when validation passes, the error.jsp is invoked correctly. Any ideas on How to invoke an error.jsp when the validation fails? Thanks. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: error page
I used the struts validator CheckFields. Here is the entries in validation.xml formset form name=bookForm field property=title depends=required arg0 key=bookForm.title/ /field /form /formset Here is the entries in validation-rules.xml validator name=required classname=org.apache.struts.validator.FieldChecks method=validateRequired methodParams=java.lang.Object, org.apache.commons.validator.ValidatorAction, org.apache.commons.validator.Field, org.apache.struts.action.ActionErrors, javax.servlet.http.HttpServletRequest msg=errors.required /validator The FieldChecks is the struts default validator for required field. Thanks. -Original Message- From: Mark Galbreath [mailto:[EMAIL PROTECTED]] Sent: Monday, January 13, 2003 1:05 PM To: 'Struts Users Mailing List' Subject: RE: error page My first thought is that if you are testing for null, you will never trap an error. Form objects are passed as Strings - empty or not. Test for titleField.length() 0 rather than != null. Mark -Original Message- From: Zhang, Larry (L.) [mailto:[EMAIL PROTECTED]] Sent: Monday, January 13, 2003 12:37 PM I am using struts 1.1b3. When the validation fails, the error can be shown on the page using html:errors. Now I have an action form page(say book.jsp, on this page there is a required field-- book title), I want an error.jsp, when the validation (example, title field is null) fails, the error page is invoked. I tried to define a forward attribute in struts-config.xml and put the target of it as the error.jsp, but struts still shows the action form page (book.jsp) when validation fails. However, when validation passes, the error.jsp is invoked correctly. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
