interceptor | 易学教程

Are Interceptors in Struts2 Thread UNsafe?

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问题 I understand that Struts2 Action classes are thread-safe, because the actions are put in the Value Stack. The Value Stack in turn is one part of the Action Context. Since the Action Context is thread-local, the values stored in the Action Context (including the value stack) are unique per thread. So, Actions are thread-safe. But consider the interceptors: They are really useful, they do all those tedious little jobs for the programmer... like validations, fetching the param values, etc. But

How to get incoming & outgoing soap xml in a simple way using Apache CXF?

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I have been fiddling around with server side interceptors on CXF. But is seems that it is not a trivial task to implement simple incoming and outgoing interceptors that give me a plain string containing the SOAP XML. I need to have the plain XML in the interceptor so that I can use them for specific logging tasks. The standard LogIn & LogOut interceptors are not up to the task. Is anyone willing to share some example on how I could implement a simple incoming interceptor that is able to get the incoming SOAP XML and a outgoing interceptor to again get the SOAP XML? annkatrin Found the code for

Is it possible to wire a Spring MVC Interceptor using annotations?

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问题 Is it possible to wire a Spring MVC Interceptor using annotations and if so could someone provide me with an example of how to do so? By wire via annotation I am referring to doing as little in the XML configuration as possible. For example in this configuration file I found at http://www.vaannila.com/spring/spring-interceptors.html; <bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" p:interceptors-ref="loggerInterceptor" /> <bean id=

AngularJS Intercept all $http JSON responses

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I have an application built using AngularJS and a server-side backend that delivers all requests in JSON form. Each and every request is wrapped in a JSON container that contains a data variable which contains the data specific to the request. The other data, which are used to keep state and control within the application, check for errors and success messages, and check for session flags. All of these other variables are served with EVERY request and are examined first before the data variable is. Right now I have a method to examine the contents of the JSON response first and then the data

Unable to implement Struts 2 token interceptor with hyperlink

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I tried to implement token interceptor with the <s:url .. tag but its showing error on the first click. i.e The form has already been processed or no token was supplied, please try again. I want to implement this interceptor, because if users already deleted a row and refresh the page once again then the same action should not perform once again. <s:url id="linkdelete" action="DeleteLatestUpload.action" namespace="/admin/insecure/upload"> <s:param name="latestUploadId" value="latestUploadId"></s:param> <s:token name="token"></s:token> </s:url> <a href='<s:property value="#linkdelete"/>' style=

Propagate exception from CXF interceptor to exception mapper

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问题 I've a flow where on CXF client I've jaxrs-in-interceptor, provider and exception mapper. In my case I'm catching bad response from client through in-interceptor and then I would like abort the cxf bus chain and throw a fault. Unfortunately I couldn't do it, cause in every situation exception thrown from interceptor is being only logged, but the main error (wrong json format) is propagated to exception mapper. I would like to avoid Exception mapper, but I don't know how. I'm using WebClient

NHibernate: difference between Interceptor and Listener

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问题 Looking at all the possibilites of creation / update columns in NHibernate I mostly (Stackoverflow question, Ayende Rahien) see solutions with Listeners. The programmer who was programming this in my company used an Interceptor to achieve the same thing. Is there any difference between those two solutions? (Is one of them obsolete, is one of them preferred and what are the advantages and / or disadvantages) 回答1: Interceptors are the the old way, event-listeners are newer and server the same

HttpClient can't parse empty response

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问题 I have an interceptor that adds a token in the headers. However, if I use it after a POST request my Observer in the subscription is not triggered. Interceptor: intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> { this.authService = this.inj.get(AuthService); if (!this.authService.isLoggedIn()) { return next.handle(req); } const changedReq = req.clone({headers: req.headers.set('Authorization', `Bearer ${this.authService.getToken()}`)}); return next.handle

In a Spring-mvc interceptor, how can I access to the handler controller method?

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问题 In a Spring-mvc interceptor I want to access to the handler controller method public class CustomInterceptor implements HandlerInterceptor { public boolean preHandle( HttpServletRequest request,HttpServletResponse response, Object handler) { log.info(handler.getClass().getName()); //access to the controller class //I want to have the controller method ... return true; } ... } I have found : how-to-get-controller-method-name-in-spring-interceptor-prehandle-method But it only work around. I

What really interceptors do with my c# class?

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问题 I was asked to implement castle dynamic proxy in my asp.net web application and i was going through couple of articles which i got from Castle Project and Code Project about castle dynamic proxy in asp.net web application.... Both articles delt with creating interceptors but i can't get the idea why interceptors are used with classes.... Why should i intercept my class which is behaving properly? 回答1: Let's say that your class needs to do 3 things for a certain operation: Perform a security