这是对这个问题的后续跟进 Grails elasticsearch plugin with "text" mapping
我按照答案中给出的步骤进行操作，然后抛出NPE。另外，如果我使用Luke打开lucene索引，那么我看不到任何文档..
虽然重新启动应用服务器时会给我以下调试信息
2013-06-03 16:20:49,364 [localhost-startStop-1] DEBUG mapping.SearchableClassMappingConfigurator - Retrieved index settings
2013-06-03 16:20:49,365 [localhost-startStop-1] DEBUG mapping.SearchableClassMappingConfigurator - Installing mappings...
2013-06-03 16:20:49,370 [localhost-startStop-1] DEBUG mapping.SearchableClassMappingConfigurator - Index com.ecw.wellness does not exists, initiating creation...
2013-06-03 16:20:49,370 [localhost-startStop-1] DEBUG mapping.SearchableClassMappingConfigurator - Waiting at least yellow status on com.ecw.wellness ...
2013-06-03 16:21:19,869 [localhost-startStop-1] DEBUG mapping.SearchableClassMappingConfigurator - {com_ecw_wellness_answer={properties={answer={type=string, include_in_all=true, term_vector=with_positions_offsets}, votes={type=object}, dateCreated={type=date, include_in_all=true}, lastUpdated={type=date, include_in_all=true}, question={type=object}}}}
2013-06-03 16:21:19,869 [localhost-startStop-1] DEBUG mapping.SearchableClassMappingConfigurator - [com_ecw_wellness_answer] => {com_ecw_wellness_answer={properties={answer={type=string, include_in_all=true, term_vector=with_positions_offsets}, votes={type=object}, dateCreated={type=date, include_in_all=true}, lastUpdated={type=date, include_in_all=true}, question={type=object}}}}
2013-06-03 16:21:19,925 [localhost-startStop-1] DEBUG mapping.SearchableClassMappingConfigurator - [com_ecw_wellness_comment] => {com_ecw_wellness_comment={properties={post={type=object}, vote={type=integer, include_in_all=true}, dateCreated={type=date, include_in_all=true}, lastUpdated={type=date, include_in_all=true}, comment={type=string, include_in_all=true, term_vector=with_positions_offsets}}}}
2013-06-03 16:21:19,977 [localhost-startStop-1] DEBUG mapping.SearchableClassMappingConfigurator - [com_ecw_wellness_post] => {com_ecw_wellness_post={properties={tags={type=object}, body={type=string, include_in_all=true, term_vector=with_positions_offsets}, title={type=string, include_in_all=true, term_vector=with_positions_offsets}, dateCreated={type=date, include_in_all=true}, lastUpdated={type=date, include_in_all=true}, comments={properties={post={type=object}, vote={type=integer, include_in_all=true}, dateCreated={type=date, include_in_all=true}, lastUpdated={type=date, include_in_all=true}, comment={type=string, include_in_all=true, term_vector=with_positions_offsets}, id={type=long, index=not_analyzed, include_in_all=false}, class={type=string, index=no, include_in_all=false}, ref={type=string, index=no, include_in_all=false}}, type=object}}}}
2013-06-03 16:21:20,005 [localhost-startStop-1] DEBUG mapping.SearchableClassMappingConfigurator - [com_ecw_wellness_question] => {com_ecw_wellness_question={properties={tags={type=object}, title={type=string, include_in_all=true, term_vector=with_positions_offsets}, answers={type=object}, dateCreated={type=date, include_in_all=true}, lastUpdated={type=date, include_in_all=true}, question={type=string, include_in_all=true, term_vector=with_positions_offsets}}}}
2013-06-03 16:21:20,010 [localhost-startStop-1] DEBUG mapping.SearchableClassMappingConfigurator - Cluster status: GREEN
以下是NPE堆栈跟踪。域类在原始问题中给出。
| Error 2013-06-03 16:17:00,891 [http-bio-8080-exec-8] ERROR errors.GrailsExceptionResolver - NullPointerException occurred when processing request: [GET] /wellness/search - parameters:
q: smoking
Stacktrace follows:
Message: null
Line | Method
->> 181 | unmarshallProperty in org.grails.plugins.elasticsearch.conversion.unmarshall.DomainClassUnmarshaller
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 73 | buildResults in ''
| 435 | doCall . . . . . . in org.grails.plugins.elasticsearch.ElasticSearchService$_doSearch_closure7
| 14 | withElasticSearch in org.grails.plugins.elasticsearch.ElasticSearchHelper
| 426 | doSearch . . . . . in org.grails.plugins.elasticsearch.ElasticSearchService
| 86 | search in ''
| 6 | index . . . . . . in com.ecw.wellness.SearchController
| 195 | doFilter in grails.plugin.cache.web.filter.PageFragmentCachingFilter
| 63 | doFilter . . . . . in grails.plugin.cache.web.filter.AbstractFilter
| 1110 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 603 | run . . . . . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^ 722 | run in java.lang.Thread
如果我使用以下信息在传输模式下运行项目，那么我将收到“No node available error”
elasticSearch.client.mode = 'transport'
elasticSearch.client.hosts = [
[host:'localhost', port:9300]
]
}
如果我在帖子中添加了以下内容
static searchable = {
except = ["user"]
comments reference:true
}
和评论
static searchable = {
except = ["user"]
post reference:true
}
然后我得到了SO异常..如果我只在post class中这样做，那么我在运行时会出现Property Comment.post is not mapped as [component], but broken search hit found.错误
ERROR errors.GrailsExceptionResolver - StackOverflowError occurred when processing request: [GET] /wellness/search - parameters:
q: smoking
Stacktrace follows:
Message: Executing action [index] of controller [com.ecw.wellness.SearchController] caused exception: Runtime error executing action
Line | Method
->> 195 | doFilter in grails.plugin.cache.web.filter.PageFragmentCachingFilter
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 63 | doFilter in grails.plugin.cache.web.filter.AbstractFilter
| 1110 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 603 | run in java.util.concurrent.ThreadPoolExecutor$Worker
^ 722 | run . . . in java.lang.Thread
Caused by ControllerExecutionException: Runtime error executing action
->> 195 | doFilter in grails.plugin.cache.web.filter.PageFragmentCachingFilter
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 63 | doFilter in grails.plugin.cache.web.filter.AbstractFilter
| 1110 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 603 | run in java.util.concurrent.ThreadPoolExecutor$Worker
^ 722 | run . . . in java.lang.Thread
Caused by InvocationTargetException: null
->> 195 | doFilter in grails.plugin.cache.web.filter.PageFragmentCachingFilter
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 63 | doFilter in grails.plugin.cache.web.filter.AbstractFilter
| 1110 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 603 | run in java.util.concurrent.ThreadPoolExecutor$Worker
^ 722 | run . . . in java.lang.Thread
Caused by StackOverflowError: null
->> 354 | findClass in java.net.URLClassLoader
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 171 | oldFindClass in org.codehaus.groovy.tools.RootLoader
| 143 | loadClass in ''
| 356 | loadClass in java.lang.ClassLoader
| 263 | unmarshallDomain in org.grails.plugins.elasticsearch.conversion.unmarshall.DomainClassUnmarshaller
| 256 | unmarshallReference in ''
| 178 | unmarshallProperty in ''
| 204 | unmarshallProperty in ''
| 268 | unmarshallDomain in ''
| 256 | unmarshallReference in ''
| 178 | unmarshallProperty in ''
| 268 | unmarshallDomain in ''
| 256 | unmarshallReference in ''
| 178 | unmarshallProperty in ''
| 204 | unmarshallProperty in ''
| 268 | unmarshallDomain in ''
| 256 | unmarshallReference in ''
| 178 | unmarshallProperty in ''
| 268 | unmarshallDomain in ''
| 256 | unmarshallReference in ''
| 178 | unmarshallProperty in ''
| 204 | unmarshallProperty in ''
答案 0 :(得分：0)
在elasticSearch.unmarshallComponents = true中添加Config.groovy。
应该在插件的grails-app/conf/DefaultElasticSearch.groovy文件中提供默认值，但不知何故它未正确加载。
Also see issue#62 on the Github repository
传输模式需要在grails应用程序外部运行独立的ES实例。
修改 关于这个问题：
属性Comment.post未映射为[component]，但已找到损坏的搜索命中。
您需要在可搜索的关闭中将您的关联映射为可搜索的component或reference。插件文档声明默认情况下使用可搜索的引用，但它在某种程度上不再正确，并且doc有点过时了。
在以前版本中删除了可搜索引用的默认值，原因是我此刻无法回想起来，因此未来版本中可能会恢复默认行为......
以下示例：
class Comment {
Post post
static belongsTo = [post:Post]
static searchable = {
post component:true
}
}
The documentation explaining the difference between the 2 behaviors