Pawel, you know of anything like this but for the convention plugin? I don't use XML anymore. In fact, I've gotten away a lot with almost a purely annotation based approach. In fact, my struts.xml is 4-5 lines only.
2011/4/26 Paweł Wielgus <[email protected]>: > Hi Jake, > maybe this aproach would help You: > http://struts.apache.org/2.2.1.1/docs/stream-result.html > > Best greetings, > Paweł Wielgus. > > > 2011/4/24 Jake Vang <[email protected]>: >> Dave, >> >> is there anyway to set it up so that the session can be created and >> not destroyed when i return null? >> >> i am finding out that when i stream back an image (CAPTCHA) this time >> (not json/xml/text as before), i need to store the answer in the >> session. even if i do session.setAttribute("captcha-answer",answer), >> when another action is called, there is nothing in the session i.e. >> session.getAttribute("captcha-answer") is null. >> >> the only way i can get a session object properly is if i go to an >> action where a JSP page is rendered. >> >> Thanks, >> >> On Sat, Apr 23, 2011 at 12:11 AM, Dave Newton <[email protected]> wrote: >>> My first guess would be to return null so you're not rendering a jsp after >>> the output stream is closed. >>> >>> Dave >>> On Apr 22, 2011 11:49 PM, "Jake Vang" <[email protected]> wrote: >>>> what i did to get rid of this message was to add the following line >>>> before i do anything. >>>> >>>> getSerlvetRequest().getSession(); >>>> >>>> that means anytime this method is called i make the two method calls >>>> above. i'm not sure what the impact on performance will be. but for >>>> now, it gets rid of the message. if anyone has a better suggestion, >>>> please let me know. >>>> >>>> On Fri, Apr 22, 2011 at 11:22 PM, Jake Vang <[email protected]> >>> wrote: >>>>> i am using struts 2 with the convention plugin. i have a bunch of >>>>> actions that streams back plain text, json or xml. however, when a >>>>> user goes to a certain URL, i keep seeing an IllegalStateException : >>>>> Cannot create a session after the response has been committed. >>>>> >>>>> why is this happening? >>>>> >>>>> my action class and the method is defined like the following: >>>>> >>>>> public class MyAction extends ActionSupport implements >>>>> ServletRequestAware, ServletResponseAware { >>>>> @Action(value="/myService") >>>>> public String execute() { >>>>> HttpServletResponse response = getServletResponse(); >>>>> ServletOutputStream os = response.getOutputStream(); >>>>> response.reset(); >>>>> response.setContentType("text/plain"); >>>>> os.write("some text".getBytes()); >>>>> os.close(); >>>>> return SUCCESS; >>>>> } >>>>> } >>>>> >>>>> there is a file corresponding to this action in >>>>> /web/WEB-INF/content/myService-success.jsp. this file is blank. >>>>> >>>>> one thing i noticed is that if i go to a URL that does not stream back >>>>> plain text, json, or xml (for example, one that forwards to a JSP >>>>> page), and then go back to /myService, the problem goes away. i >>>>> "think" that when i go to a regular URL (one that forwards to a JSP >>>>> page), the session object is created, and so whenever i go back to >>>>> /myService, the problem goes away. >>>>> >>>>> my webapp will primarily be a backend service, and so there won't be >>>>> any JSP front-ends. but i'd like to use struts2 + convention plugin to >>>>> handle all the data posts. any pointer is appreciated. the full >>>>> stacktrace is below. any help is appreciated. >>>>> >>>>> java.lang.IllegalStateException: Cannot create a session after the >>>>> response has been committed >>>>> at >>> org.apache.catalina.connector.Request.doGetSession(Request.java:2381) >>>>> at >>> org.apache.catalina.connector.Request.getSession(Request.java:2098) >>>>> at >>> org.apache.catalina.connector.RequestFacade.getSession(RequestFacade.java:833) >>>>> at >>> javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:216) >>>>> at >>> org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:544) >>>>> at >>> org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:493) >>>>> at >>> javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:224) >>>>> at >>> org.apache.jasper.runtime.PageContextImpl._initialize(PageContextImpl.java:146) >>>>> at >>> org.apache.jasper.runtime.PageContextImpl.initialize(PageContextImpl.java:124) >>>>> at >>> org.apache.jasper.runtime.JspFactoryImpl.internalGetPageContext(JspFactoryImpl.java:107) >>>>> at >>> org.apache.jasper.runtime.JspFactoryImpl.getPageContext(JspFactoryImpl.java:63) >>>>> at >>> org.apache.jsp.WEB_002dINF.content.locationService_002dsuccess_jsp._jspService(locationService_002dsuccess_js >>>>> p.java:44) >>>>> at >>> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) >>>>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) >>>>> at >>> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377) >>>>> at >>> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313) >>>>> at >>> org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260) >>>>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) >>>>> at >>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) >>>>> at >>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) >>>>> at >>> org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646) >>>>> at >>> org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:551) >>>>> at >>> org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:488) >>>>> at >>> org.apache.struts2.dispatcher.ServletDispatcherResult.doExecute(ServletDispatcherResult.java:156) >>>>> at >>> org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:186) >>>>> at >>> com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:362) >>>>> at >>> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:266) >>>>> at >>> com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:16 >>>>> 5) >>>>> at >>> com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) >>>>> at >>> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) >>>>> at >>> com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:252) >>>>> at >>> org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInt >>>>> erceptor.java:68) >>>>> at >>> com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) >>>>> at >>> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) >>>>> at >>> com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:122) >>>>> >>>>> at >>> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) >>>>> at >>> com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195) >>>>> at >>> com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) >>>>> at >>> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) >>>>> at >>> com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195) >>>>> at >>> com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) >>>>> at >>> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) >>>>> at >>> com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:17 >>>>> 9) >>>>> at >>> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) >>>>> at >>> org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75) >>>>> at >>> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) >>>>> at >>> org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94) >>>>> at >>> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) >>>>> at >>> org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:235) >>>>> at >>> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) >>>>> at >>> com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:89) >>>>> at >>> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) >>>>> at >>> com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java: >>>>> 130) >>>>> at >>> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) >>>>> at >>> org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:267) >>>>> at >>> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) >>>>> at >>> com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:126) >>>>> at >>> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) >>>>> at >>> com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:138) >>>>> at >>> com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) >>>>> at >>> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) >>>>> at >>> com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:165) >>>>> at >>> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) >>>>> at >>> org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164) >>>>> at >>> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) >>>>> at >>> com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:179) >>>>> at >>> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) >>>>> at >>> com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:17 >>>>> 6) >>>>> at >>> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) >>>>> at >>> org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52) >>>>> at >>> org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:488) >>>>> at >>> org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77) >>>>> at >>> org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter. >>>>> java:91) >>>>> at >>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) >>>>> at >>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) >>>>> at >>> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) >>>>> at >>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) >>>>> at >>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) >>>>> at >>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) >>>>> at >>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) >>>>> at >>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) >>>>> at >>> org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859) >>>>> at >>> org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579) >>>>> at >>> org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555) >>>>> at java.lang.Thread.run(Thread.java:662) >>>>> FATAL >>> org.apache.jasper.runtime.JspFactoryImpl.internalGetPageContext(JspFactoryImpl.java:112) >>>>> - Exception initializing >>>>> page context >>>>> >>>> >>>> --------------------------------------------------------------------- >>>> 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] >> >> > > --------------------------------------------------------------------- > 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]
