ERROR errors.GrailsExceptionResolver - ConcurrentModificationException wystąpił podczas przetwarzania żądania:

Question

Mam Grails 2.4.5 GSP stronę, która ładuje dwa iFrame:

<iframe scrolling="no" 
      src="${createLink(controller:'admin', action:'page1', id: serviceCard.id)}"></iframe> 
<iframe scrolling="no" 
      src="${createLink(controller:'admin', action:'page2', id: serviceCard.id)}"></iframe> 

po każdym przeładowaniu lub drugim więc mam następujący problem. Należy pamiętać, że to nie występuje cały czas.

Na moim GSP widzę Error 500. Konsola pojawi się następujący błąd:

2015-08-01 21:41:11,530 [http-nio-8080-exec-3] ERROR errors.GrailsExceptionResolver - ConcurrentModificationException occurred when processing request: [GET] /test/adminServiceCard/previewCard/4b6dc4730fd3acd80a 
Stacktrace follows: 
Message: Error processing GroovyPageView: Error executing tag <asset:stylesheet>: null 
    Line | Method 
->> 527 | doFilter   in /grails-app/views/adminServiceCard/previewCard.gsp 
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
Caused by GrailsTagException: Error executing tag <asset:stylesheet>: null 
->> 6 | doCall   in /grails-app/views/adminServiceCard/previewCard.gsp 
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
Caused by ConcurrentModificationException: null 
->> 1456 | sort    in java.util.ArrayList 
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
| 175 | sort    in java.util.Collections 
| 145 | fileNameWithoutExtensionFromArtefact in asset.pipeline.AssetHelper 
|  99 | loadRequiresForTree in asset.pipeline.DirectiveProcessor 
|  76 | getFlattenedRequireList in  '' 
|  83 | getDependencyList in asset.pipeline.AssetPipeline 
|  79 | doCall . . . . . in asset.pipeline.grails.AssetsTagLib$_closure2 
|  6 | doCall   in Users_mg_Documents_Grails_GGTS3_6_3_test_grails_app_views_adminServiceCard_previewCard_gsp$_run_closure1 
|  10 | run . . . . . . in Users_mg_Documents_Grails_GGTS3_6_3_test_grails_app_views_adminServiceCard_previewCard_gsp 
| 198 | doFilter   in grails.plugin.cache.web.filter.PageFragmentCachingFilter 
|  63 | doFilter . . . . in grails.plugin.cache.web.filter.AbstractFilter 
|  53 | doFilter   in grails.plugin.springsecurity.web.filter.GrailsAnonymousAuthenticationFilter 
|  62 | doFilter . . . . in grails.plugin.springsecurity.web.authentication.logout.MutableLogoutFilter 
|  46 | doFilterInternal in org.grails.jaxrs.web.JaxrsFilter 
| 1142 | runWorker . . . in java.util.concurrent.ThreadPoolExecutor 
| 617 | run    in java.util.concurrent.ThreadPoolExecutor$Worker 
^ 745 | run . . . . . . in java.lang.Thread 

Edycja: Oto treść adminServiceCardpreview_gsp.groovy.gsp:

import org.codehaus.groovy.grails.plugins.metadata.GrailsPlugin 
import org.codehaus.groovy.grails.web.pages.GroovyPage 
import org.codehaus.groovy.grails.web.taglib.* 
import org.codehaus.groovy.grails.web.taglib.exceptions.GrailsTagException 
import org.springframework.web.util.* 
import grails.util.GrailsUtil 

class gsp_majestella_adminServiceCardpreview_gsp extends GroovyPage { 
public String getGroovyPageFileName() { "/WEB-INF/grails-app/views/adminServiceCard/preview.gsp" } 
public Object run() { 
Writer out = getOut() 
Writer expressionOut = getExpressionOut() 
registerSitemeshPreprocessMode() 
printHtmlPart(0) 
createTagBody(1, {-> 
printHtmlPart(1) 
invokeTag('javascript','g',5,['library':("jquery"),'plugin':("jquery")],-1) 
printHtmlPart(1) 
invokeTag('stylesheet','asset',7,['src':("perfect-scrollbar/perfect-scrollbar.min.css")],-1) 
printHtmlPart(2) 
invokeTag('javascript','asset',8,['src':("perfect-scrollbar/perfect-scrollbar.jquery.min.js")],-1) 
printHtmlPart(2) 
invokeTag('javascript','asset',9,['src':("jquery.cycle.all.js")],-1) 
printHtmlPart(1) 
invokeTag('stylesheet','asset',11,['src':("preview.css")],-1) 
printHtmlPart(3) 
}) 
invokeTag('captureHead','sitemesh',13,[:],1) 
printHtmlPart(4) 
createTagBody(1, {-> 
printHtmlPart(5) 
if(true && (showCard == true)) { 
printHtmlPart(6) 
if(true && (serviceCard.imageItems)) { 
printHtmlPart(7) 
expressionOut.print(createLink(controller:'image', action:'getImage', id:serviceCard.imageItems[0].id, absolute:true)) 
printHtmlPart(8) 
} 
printHtmlPart(9) 
expressionOut.print(serviceCard?.title) 
printHtmlPart(10) 
expressionOut.print(serviceCard?.company?.name) 
printHtmlPart(11) 
} 
printHtmlPart(12) 
if(true && (showDetail == true)) { 
printHtmlPart(13) 
loop:{ 
int i = 0 
for(imageItem in (serviceCard.imageItems)) { 
printHtmlPart(14) 
expressionOut.print(createLink(controller:'image', action:'getImage', id:imageItem.id, absolute:true)) 
printHtmlPart(15) 
i++ 
} 
} 
printHtmlPart(16) 
expressionOut.print(raw(serviceCard.description)) 
printHtmlPart(17) 
} 
printHtmlPart(18) 
}) 
invokeTag('captureBody','sitemesh',116,[:],1) 
printHtmlPart(19) 
} 
public static final Map JSP_TAGS = new HashMap() 
protected void init() { 
    this.jspTags = JSP_TAGS 
} 
public static final String CONTENT_TYPE = 'text/html;charset=UTF-8' 
public static final long LAST_MODIFIED = 1438521220000L 
public static final String EXPRESSION_CODEC = 'html' 
public static final String STATIC_CODEC = 'none' 
public static final String OUT_CODEC = 'none' 
public static final String TAGLIB_CODEC = 'none' 
} 

Jak mogę rozwiązać ten problem?

Answer 1

Ten błąd wygląda bardzo podobnie do this one z potoku zasobów.

Powinieneś usunąć wszystkie //=require w previewCard.gsp, a następnie przepracować, co powoduje błąd.