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我正在开发 Grails 2.3.4 应用程序。我将Audit-Trail Plugin v2.0.3 添加到我们的项目中，因为我们需要跟踪所有创建和修改时间以及用户，以帮助调试可能出现的问题。我已经成功安装了插件，一切正常，除了我们不能在开发环境中引导数据。

这是在我们的 Config.groovy 中：

plugin {

    audittrail {
        createdBy.field = "createUser"
        createdBy.type = "java.lang.String"
        createdDate.field = "createDate"

        editedBy.field = "updateUser"
        editedBy.type = "java.lang.String"
        editedDate.field = "updateDate"
        /*
            This closure returns the value of the user for the plugin.
         */
        currentUserClosure = { ctx ->
            ctx.userServiceProxy.getUserToken()

        }
    }

这是用户服务包 com.perceptivecloud.frg.datadefinition

/**
* Service class to help the Audit-Trail plugin get userId information.
*
* TODO:This will need to be revisited when  real Authorization is implemented.
*/
class UserService {
/*
    force a new instance of the service per session.
    see http://grails.org/doc/latest/guide/services.html#scopedServices for details
 */
static scope = "session"

   String userToken

    void setUserToken(String userId) {
        userToken = userId
    }

    String getUserToken() {
        userToken
    }

}

代理服务在 resources.groovy 中定义：

userServiceProxy(ScopedProxyFactoryBean) {
    targetBeanName = 'userService'
    proxyTargetClass = true
}

我们的 Domain 类看起来像：

@AuditStamp
class MyDomainClass {
    String name

    static constraints = {
        name nullable: false
    }

}

我们的 BootStrap.groovy 看起来像：

def userServiceProxy
...
development {
    userServiceProxy.setUserToken("bootstrap")

    def claims = new MyDomainClass(name: 'Submit claim')
    claims.save(flush: true)
}

当我启动应用程序时，我得到一个堆栈跟踪，如下所示：

| Error 2014-03-13 13:10:48,963 [localhost-startStop-1] ERROR context.GrailsContextLoader  - Error initializing the application: Error creating bean with name 'userService': 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.
Message: Error creating bean with name 'userService': 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.
    Line | Method
->>   41 | doCall                       in BootStrap$_closure1_closure2_closure4
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|    321 | execute                      in grails.util.Environment$EnvironmentBlockEvaluator
|    302 | executeForEnvironment . . .  in grails.util.Environment
|    277 | executeForCurrentEnvironment in     ''
|    262 | run . . . . . . . . . . . .  in java.util.concurrent.FutureTask
|   1145 | runWorker                    in java.util.concurrent.ThreadPoolExecutor
|    615 | run . . . . . . . . . . . .  in java.util.concurrent.ThreadPoolExecutor$Worker
^    744 | run                          in java.lang.Thread

当我尝试像这样在引导程序中创建会话时：

development {
    WebUtils.storeGrailsWebRequest(new GrailsWebRequest(new GrailsMockHttpServletRequest(),
        new GrailsMockHttpServletResponse(), (ServletContext)servletContext))
WebUtils.retrieveGrailsWebRequest().applicationContext.getBean('userServiceProxy')
    .setUserToken("userToken")

    def claims = new MyDomainClass(name: 'Submit claim')
    claims.save(flush: true)
}

我收到以下错误。

| Error 2014-03-13 12:50:34,179 [localhost-startStop-1] ERROR hibernate.AssertionFailure  - an assertion failure occured (this may indicate a bug in Hibernate, but is more likely due to unsafe use of the session)
Message: null id in MyDomainClass entry (don't flush the Session after an exception occurs)
    Line | Method
->>  112 | doCall                       in Config$_run_closure2_closure7_closure11_closure12
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|     67 | currentUserId                in grails.plugin.audittrail.AuditTrailHelper
|     45 | doCall . . . . . . . . . . . in grails.plugin.audittrail.AuditTrailInterceptor$_onSave_closure1
|     37 | onSave                       in grails.plugin.audittrail.AuditTrailInterceptor
|     46 | doCall . . . . . . . . . . . in BootStrap$_closure1_closure2_closure4
|    321 | execute                      in grails.util.Environment$EnvironmentBlockEvaluator
|    302 | executeForEnvironment . . .  in grails.util.Environment
|    277 | executeForCurrentEnvironment in     ''
|    262 | run . . . . . . . . . . . .  in java.util.concurrent.FutureTask
|   1145 | runWorker                    in java.util.concurrent.ThreadPoolExecutor
|    615 | run . . . . . . . . . . . .  in java.util.concurrent.ThreadPoolExecutor$Worker
^    744 | run                          in java.lang.Thread

从这些消息告诉我的内容来看，不知何故，我需要能够将对象保存在请求或会话上下文中，但我不知道该怎么做。

至少，我要解决的问题是确保每次使用 Audit-Trail 插件启动开发环境时数据库中的数据一致。

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