Hi Jake,
who said it has to be in xml?
@Result(name="success", type="stream", params={"inputName", "image",
"contentType", "contentType", "contentDisposition", "inline"})
but please double check what kind of default params are in current version,
for example if You will have:
public InputStream getInputStream() {...}
in your action there is no need to specify it in params section in
@Result annotation.Best greetings, Paweł Wielgus. 2011/4/27 Jake Vang <vangj...@googlemail.com>: > 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 <poulw...@gmail.com>: >> 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 <vangj...@googlemail.com>: >>> 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 <davelnew...@gmail.com> 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" <vangj...@googlemail.com> 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 <vangj...@googlemail.com> >>>> 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 >>>>>> >>>>> >>>>> 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