interceptor

Interceptor not getting called in Struts

由 假装没事ソ 提交于 2019-12-12 22:11:45
问题 My interceptor ( validation ) is not getting called before or after the action. Any ideas how to get it work ? Note : Everytime the default interceptor is being called. <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <package name="default" namespace="/" extends="struts-default,json-default"> <result-types> <result-type name="tiles" class="org.apache

spring声明式事务 同一类内方法调用事务失效

由 醉酒当歌 提交于 2019-12-12 17:35:22
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 现象： 1、ServiceA类为Web层的Action服务 2、Action调用了ServiceA的方法A，而 方法A没有声明事务 （原因是方法A本身比较耗时而又不需要事务） 3、 ServiceA的方法A调用了自己的方法B，而方法B声明了事务，但是方法B的事务声明在这种情况失效了。 4、 如果在方法A上也声明事务，则在Action调用方法A时，事务生效，而方法B则自动参与了这个事务。 原因： 表面上是事务声明失效的问题，实质上很可能是Spring的AOP机制实现角度的问题 二 具体解释 前些日子一朋友在需要在目标对象中进行自我调用，且需要实施相应的事务定义，且网上的一种通过BeanPostProcessor的解决方案是存在问题的。因此专门写此篇帖子分析why。 1、预备知识 aop概念请参考【 http://www.iteye.com/topic/1122401 】和【 http://jinnianshilongnian.iteye.com/blog/1418596 】 spring的事务管理，请参考【 http://jinnianshilongnian.iteye.com/blog/1441271 】 使用AOP 代理后的方法调用执行流程，如图所示 也就是说我们首先调用的是AOP代理对象而不是目标对象

@PostConstruct Interceptor with @Named @ViewScoped not invoked

由 十年热恋 提交于 2019-12-12 17:22:53
问题 I have read carefully the article about Interceptors in the Seam/Weld documentation and implemented a InterceptorBinding : @InterceptorBinding @Retention(RetentionPolicy.RUNTIME) @Target({ElementType.METHOD, ElementType.TYPE}) public @interface MyLog {} and a Interceptor class: @MyLog @Interceptor public class ErpLogInterceptor implements Serializable { @AroundInvoke public Object logMethodEntry(InvocationContext invocationContext) throws Exception {..} @PostConstruct public Object

Spring 3 mvc:resources causing mvc:interceptors to run multiple times

由 故事扮演 提交于 2019-12-12 16:43:09
问题 in Spring 3 MVC dispather-servlet.xml with the configuration below, it seems like everytime a .js file is called the interceptor is kicked off. <mvc:interceptors> <bean class="com.something.SomeInterceptor" /> </mvc:interceptors> <mvc:resources mapping="/js/**" location="/js/" /> <mvc:resources mapping="/jsp/**" location="/jsp/" /> My view/jsp calls four .js and the interceptor runs four times... What is the proper way to set up the xml file so that this does not happen? thanks 回答1: It's

Hibernate Interceptor - after load event

由 ╄→гoц情女王★ 提交于 2019-12-12 15:56:13
问题 Is there any event that occurs after an entity is loaded? My goal is to add this entity to a Solr or Lucene index. The EmptyInterceptor OnLoad event occurs BEFORE an object is initialized. I want to handle an event AFTER the object properties are set. Is it possible with Hibernate Interceptors or with something else? 回答1: @PostLoad seems to do the job (see community documentation). If you annotate a method with this inside your entity, it should be triggered after the entity has been loaded.

Pinpoint 源码分析（一）

由 我是研究僧i 提交于 2019-12-12 15:17:59
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 简单的说它可以用来追踪分布式系统的执行链路，记录执行时间、参数、异常等各种信息，可以作性能分析、监控预警、故障分析等用途。 假如读者已经对pinpoint有直观的认识，从githup download了相应源码，在本机编译运行quickstart应用，体验过了quickstart中pinpoint采集testApp接口调用数据，上报collect，在web中查看到了链路图，详细查看某个方法的执行链路。那么可以开始阅读本源码分析文章。 Interceptor 源码分析 如果已经阅读了pinpoint的介绍文章，那么就应该知道，pinpoint使用了java字节码增强技术ASM（ASM的详细信息可以自行google），配合java探针技术，可以在应用类装载前，改写类结构，比如增加字段、增加访问方法get/set、增加方法、改写方法。pinpoint就是通过这一系列技术达到对客户代码无侵入，用户使用pinpoint无需改写应用代码，无需增加锚点，pinpoint自动帮你完成一切。pinpoint的plugin就是完成对用户代码改写、增强的模块，pinpoint提供了很多内置插件，用户也可以按规范编写自己的插件。而我们马上要分析的Interceptor就是插件的基础，通过Interceptor来对方法做功能增强。

Whats the differences between IInvokedMethodListener and IMethodInterceptor in TestNG?

由 非 Y 不嫁゛ 提交于 2019-12-12 12:25:46
问题 Whats the basic difference between Interceptor and Listener in java? If i add both, which will be invoked first? 回答1: 1) IMethodInterceptor allows user to modify the list of methods (or Test) to be executed. 2) IInvokedMethodListener allows user to perform certain action before/after a method has been executed. something like clean up or setup. 3) First IMethodInterceptor is called so that if user wishes to modify the list of method to be executed then a user can change it and pass it to

Registering an Interceptor For All Interface Implementations in Castle Windsor

由 眉间皱痕 提交于 2019-12-12 10:03:54
问题 I'm fairly new to Castle Windsor and in particular using Interceptors and am wondering if it is possible to register an Interceptor across all implementations of a particular interface without specifying each implementation in turn. For example, I have an interface called IComponent which will be implemented by a number of classes. I have a ComponentInterceptor class written to act on these classes when they have executed a particular method. I would like to do something like: _container

How to get the invoker name in EJB interceptor's lifecycle event method

由 六眼飞鱼酱① 提交于 2019-12-12 08:39:29
问题 I use Java EE 5. I wrote an interceptor for all EJBs with three methods for logging: public class DefaultInterceptor { public static final String PREFIX = "!!!!!!!!!Interceptor:"; @PostConstruct public void postConstruct(InvocationContext ctx) { try { System.out.println(PREFIX + " postConstruct"); } catch (Exception ex) { throw new RuntimeException(ex); } } @PreDestroy public void preDestroy(InvocationContext ctx) { try { System.out.println(PREFIX + " predestroy"); System.out.println(PREFIX +

Which one to use: OpenSessionInViewInterceptor or OpenSessionInViewFilter?

由 ♀尐吖头ヾ 提交于 2019-12-12 08:09:04
问题 I'm having a hard time deciding which "Open Session In View" to use: configuring OpenSessionInViewInterceptor using Spring MVC's interceptor with or configuring OpenSessionInViewFilter in web.xml's filter? From what I have researched, they do pretty much the same thing, but I'm trying to understand the difference and the usage of each type. The biggest difference between the two is for folks who can't use a filter in web.xml (say, servlet 2.2 and earlier), their only option is to use
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