Grails 错误仅在 Tomcat 服务器上；无法在本地重现：执行标记时出错：对象不是声明类的实例

发布于 2024-10-06 07:15:51 字数 1549 浏览 2 评论 0原文

我的实时服务器上有一个奇怪的错误。它仅发生在特定操作（搜索）上。我无法在本地重现它（我使用 grails run-app 运行代码），并且无法在测试服务器上重现它，该服务器以与生产环境完全相同的方式运行 Tomcat服务器。我已经将生产数据库复制到本地，但仍然无法重现该错误。唯一的配置不同是启用了邮件和其他一些小东西，这些东西在这里似乎都不相关。

我不知道该往哪里看，因为我不知道“对象不是声明类的实例”是什么意思。或者更重要的是，为什么这只会成为生产服务器上的问题。这是完整的错误：

Error 500: Error processing GroovyPageView: Error executing tag <g:link>: object is not an instance of declaring class at /WEB-INF/grails-app/views/dealer/list.gsp:41
Servlet: grails
URI: /grails/dealer/list.dispatch
Exception Message: object is not an instance of declaring class
Caused by: Error processing GroovyPageView: Error executing tag <g:link>: object is not an instance of declaring class at /WEB-INF/grails-app/views/dealer/list.gsp:41
Class: gsp_quotations_dealerlist_gsp
At Line: [72]

第 41 行周围的 .gsp 代码是：

<g:each in="${dealerInstanceList}" status="i" var="dealerInstance">
<tr class="${(i % 2) == 0 ? 'odd' : 'even'}">
  <td><g:link action="show" id="${dealerInstance.id}">${fieldValue(bean:dealerInstance, field:'name')}</g:link></td>
  <td><g:link action="show" id="${dealerInstance.id}">${fieldValue(bean:dealerInstance, field:'address')}</g:link></td>
  <td><g:link controller="quoteSettings" action="adminEdit" id="${dealerInstance.id}">${dealerInstance?.quoteSettings?.pricingTables?.size() > 0}</g:link></td>
</tr>
</g:each>

第 41 行是最后一个 g:link 标记。

再次注意，所有这些在本地和测试服务器上都运行良好。我完全被难住了。

原文

I've got a weird bug on the live server. It happens only on a specific action (a search). I can't reproduce it locally (where I run the code using grails run-app), and I can't reproduce it on the test server, which runs Tomcat in exactly the same way as the production server. I've copied the production database to local, and I still can't reproduce the error. The only config differenes are that mail is enabled and some other minor stuff, none of which seems relevant here.

I have no idea where to look, because I have no idea what "object is not an instance of declaring class" means. Or more importantly, why this would only be a problem on the production server. Here's the full error:

Error 500: Error processing GroovyPageView: Error executing tag <g:link>: object is not an instance of declaring class at /WEB-INF/grails-app/views/dealer/list.gsp:41
Servlet: grails
URI: /grails/dealer/list.dispatch
Exception Message: object is not an instance of declaring class
Caused by: Error processing GroovyPageView: Error executing tag <g:link>: object is not an instance of declaring class at /WEB-INF/grails-app/views/dealer/list.gsp:41
Class: gsp_quotations_dealerlist_gsp
At Line: [72]

The .gsp code around line 41 is:

<g:each in="${dealerInstanceList}" status="i" var="dealerInstance">
<tr class="${(i % 2) == 0 ? 'odd' : 'even'}">
  <td><g:link action="show" id="${dealerInstance.id}">${fieldValue(bean:dealerInstance, field:'name')}</g:link></td>
  <td><g:link action="show" id="${dealerInstance.id}">${fieldValue(bean:dealerInstance, field:'address')}</g:link></td>
  <td><g:link controller="quoteSettings" action="adminEdit" id="${dealerInstance.id}">${dealerInstance?.quoteSettings?.pricingTables?.size() > 0}</g:link></td>
</tr>
</g:each>

Line 41 is the last g:link tag.

Note again that all of this works fine locally and on the test server. I'm completely stumped.

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