1、問題1

struts 2でクエリーを行い、異なるクライアントでクエリーを行うと、a側にb側のクエリー結果が表示され、原因scope=「singleton」になります。

解決方法:

beanのscopeを「session【session役割ドメインのbeanはhttp Sessionごとに有効」に設定する

       
    ”
そこで次のような異常が発生しました

2、問題2

Struts Problem Report

Struts has detected an unhandled exception:
Messages:

No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.

Error creating bean with name 'qAction': Scope 'session' is not active for the current thread; consider defining a scoped proxy for this bean if you intend to refer to it from a singleton; nested exception is java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.

Unable to instantiate Action, qAction, defined for 'qshow' in namespace '/'Error creating bean with name 'qAction': Scope 'session' is not active for the current thread; consider defining a scoped proxy for this bean if you intend to refer to it from a singleton; nested exception is java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.

File:
org/springframework/web/context/request/RequestContextHolder.java
Line number:
131

Stacktraces

Unable to instantiate Action, qAction, defined for 'qshow' in namespace '/'Error creating bean with name 'qAction':Scope 'session' is not active for the current thread;consider defining a scoped proxy for this bean if you intend to refer to it from a singleton; nested exception is java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.

    com.opensymphony.xwork2.DefaultActionInvocation.createAction(DefaultActionInvocation.java:318)
    com.opensymphony.xwork2.DefaultActionInvocation.init(DefaultActionInvocation.java:399)

解決策

（1） Spring's DispatcherServlet Servlet 2.4 Web （ JSF Struts）， Web 'web.xml'  javax.servlet.ServletRequestListener  
<web-app>
  ...
  <listener>
    <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
  </listener>
  ...
</web-app>

（2） web （Servlet 2.4 ）， javax.servlet.Filter 。 web.xml ：

<web-app>
  ..
  <filter> 
    <filter-name>requestContextFilter</filter-name> 
    <filter-class>org.springframework.web.filter.RequestContextFilter</filter-class>
  </filter> 
  <filter-mapping> 
    <filter-name>requestContextFilter</filter-name> 
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  ...
</web-app>