异常EJB已经与不完整的事务关联 [英] exception EJB is already associated with an incomplete transaction

问题描述

当我调用列表页面时，我得到了这个错误，程序也正在运行，但是在工作和重定向调试页面上却有些进展，我无法修复它，任何人都知道这个错误，这是什么意思

信息：EJB5018：在[EjbSynchronizations]
信息的ejb调用期间引发了异常：javax.ejb.EJBException：嵌套异常是：java.lang.IllegalStateException： EJB已经与不完整的事务
相关联java.lang.IllegalStateException：EJB已经与不完整的事务
相关联com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke（PESessionLockingStandardPipeline.java:98）
// 大量无用的错误信息

INFO: EJB5018: An exception was thrown during an ejb invocation on [EjbSynchronizations] INFO: javax.ejb.EJBException: nested exception is: java.lang.IllegalStateException: EJB is already associated with an incomplete transaction java.lang.IllegalStateException: EJB is already associated with an incomplete transaction com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:98) //lots of useless error info

推荐答案

该错误表示两个线程正在尝试执行以下操作：调用相同的有状态会话Bean实例。有状态会话Bean实例一次只能与单个事务（每个线程）关联。没有更多信息，就不可能知道应用程序出了什么问题来实现这一目标。一种可能性是应用程序将有状态会话Bean注入到servlet中，因此所有线程上的所有请求都试图使用同一实例。每个请求都应该创建自己的bean实例，或者bean实际上应该是无状态的。

The error means that two threads are attempting to call the same stateful session bean instance. A stateful session bean instance can only be associated with a single transaction (which are per thread) at a time. Without more information, it's impossible to know what is wrong with the application to make this happen. One possibility is that the application injects a stateful session bean into a servlet, so all requests on all threads are attempting to use the same instance. Either each request should create its own instance of the bean, or the bean should actually be stateless.

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