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我有这个简单的GET请求来获取基于topicId信息存储在数据库作为1486485753923＃2错误春季数据JPA
@RequestMapping(path = "/get_topic_details", method = RequestMethod.GET)
public ResponseEntity get_topic_details(@RequestParam(value="topicId") long topicId) throws Exception {
System.out.println("Topic id is " + topicId);
TopicBean topicBean = topicService.findByTopicId(topicId);
return new ResponseEntity(topicBean, HttpStatus.OK);
}
库：
@Repository
public interface TopicRepository extends JpaRepository<TopicBean, Long>{
List<TopicBean> findTop10ByUsername(String username);
Page<TopicBean> findAllByPage(Pageable pageable);
// @Query("SELECT t FROM TopicBean t WHERE (t.topicId) = (:topicId)")
TopicBean findByTopicId(long topicId);
@Transactional
Long deleteByTopicId(String topicId);
List<TopicBean> findByUsername(String username);
}
而我得到这个错误：
2017-02-17 13:44:50.542 DEBUG 4828 --- [nio-8080-exec-1] .m.m.a.ExceptionHandlerExceptionResolver : Resolving exception from handler [public org.springframework.http.ResponseEntity seconds47.restAPI.TopicsRest.get_topic_details(long) throws java.lang.Exception]: org.springframework.web.util.NestedServletException: Handler dispatch failed; nested exception is java.lang.StackOverflowError
org.springframework.web.util.NestedServletException: Handler dispatch failed; nested exception is java.lang.StackOverflowError
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:978) ~[spring-webmvc-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) ~[spring-webmvc-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) [spring-webmvc-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) [spring-webmvc-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:622) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) [spring-webmvc-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) [tomcat-embed-websocket-8.5.6.jar:8.5.6]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) [spring-web-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:89) [spring-web-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77) [spring-web-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) [spring-web-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:108) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:784) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:802) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1410) [tomcat-embed-core-8.5.6.jar:8.5.6]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.6.jar:8.5.6]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_102]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_102]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.6.jar:8.5.6]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_102]
打印调试信息：
2017-02-17 13:44:51.132 DEBUG 4828 --- [nio-8080-exec-1] o.s.w.s.DispatcherServlet : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/error]
2017-02-17 13:44:51.132 DEBUG 4828 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /error
2017-02-17 13:44:51.134 DEBUG 4828 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Returning handler method [public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)]
2017-02-17 13:44:51.134 DEBUG 4828 --- [nio-8080-exec-1] o.s.w.s.DispatcherServlet : Last-Modified value for [/error] is: -1
2017-02-17 13:44:51.270 DEBUG 4828 --- [nio-8080-exec-1] o.s.w.s.m.m.a.HttpEntityMethodProcessor : Written [{timestamp=Fri Feb 17 13:44:51 IST 2017, status=500, error=Internal Server Error, exception=java.lang.StackOverflowError, message=No message available, path=/get_topic_details}] as "application/json" using [org.springfr[email protected]2e3900dc]
2017-02-17 13:44:51.272 DEBUG 4828 --- [nio-8080-exec-1] o.s.w.s.DispatcherServlet : Null ModelAndView returned to DispatcherServlet with name 'dispatcherServlet': assuming HandlerAdapter completed request handling
2017-02-17 13:44:51.272 DEBUG 4828 --- [nio-8080-exec-1] o.s.w.s.DispatcherServlet : Successfully completed request
2017-02-17 13:44:51.306 DEBUG 4828 --- [nio-8080-exec-2] o.s.w.s.DispatcherServlet : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/get_comments_by_topicId]
2017-02-17 13:44:51.307 DEBUG 4828 --- [nio-8080-exec-2] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /get_comments_by_topicId
2017-02-17 13:44:51.308 DEBUG 4828 --- [nio-8080-exec-2] s.w.s.m.m.a.RequestMappingHandlerMapping : Returning handler method [public java.util.List<seconds47.beans.CommentBean> seconds47.restAPI.CommentRest.getCommentsByTopicId(java.lang.String)]
2017-02-17 13:44:51.308 DEBUG 4828 --- [nio-8080-exec-2] o.s.w.s.DispatcherServlet : Last-Modified value for [/get_comments_by_topicId] is: -1
2017-02-17 13:44:51.325 DEBUG 4828 --- [nio-8080-exec-2] o.h.j.c.CriteriaQueryImpl : Rendered criteria query -> select generatedAlias0 from CommentBean as generatedAlias0 where generatedAlias0.topicId=:param0
2017-02-17 13:44:51.347 DEBUG 4828 --- [nio-8080-exec-2] o.h.h.i.QueryTranslatorFactoryInitiator : QueryTranslatorFactory : [email protected]7
2017-02-17 13:44:51.347 INFO 4828 --- [nio-8080-exec-2] o.h.h.i.QueryTranslatorFactoryInitiator : HHH000397: Using ASTQueryTranslatorFactory
2017-02-17 13:44:51.422 DEBUG 4828 --- [nio-8080-exec-2] o.h.h.i.a.QueryTranslatorImpl : parse() - HQL: select generatedAlias0 from seconds47.beans.CommentBean as generatedAlias0 where generatedAlias0.topicId=:param0
2017-02-17 13:44:51.444 DEBUG 4828 --- [nio-8080-exec-2] o.h.h.i.a.QueryTranslatorImpl : --- HQL AST ---
\-[QUERY] Node: 'query'
+-[SELECT_FROM] Node: 'SELECT_FROM'
| +-[FROM] Node: 'from'
| | \-[RANGE] Node: 'RANGE'
| | +-[DOT] Node: '.'
| | | +-[DOT] Node: '.'
| | | | +-[IDENT] Node: 'seconds47'
| | | | \-[IDENT] Node: 'beans'
| | | \-[IDENT] Node: 'CommentBean'
| | \-[ALIAS] Node: 'generatedAlias0'
| \-[SELECT] Node: 'select'
| \-[IDENT] Node: 'generatedAlias0'
\-[WHERE] Node: 'where'
\-[EQ] Node: '='
+-[DOT] Node: '.'
| +-[IDENT] Node: 'generatedAlias0'
| \-[IDENT] Node: 'topicId'
\-[COLON] Node: ':'
\-[IDENT] Node: 'param0'
2017-02-17 13:44:51.444 DEBUG 4828 --- [nio-8080-exec-2] o.h.h.i.a.ErrorCounter : throwQueryException() : no errors
2017-02-17 13:44:51.508 DEBUG 4828 --- [nio-8080-exec-2] o.h.h.i.a.HqlSqlBaseWalker : select << begin [level=1, statement=select]
2017-02-17 13:44:51.540 DEBUG 4828 --- [nio-8080-exec-2] o.h.h.i.a.t.FromElement : FromClause{level=1} : seconds47.beans.CommentBean (generatedAlias0) -> commentbea0_
2017-02-17 13:44:51.542 DEBUG 4828 --- [nio-8080-exec-2] o.h.h.i.a.t.FromReferenceNode : Resolved : generatedAlias0 -> commentbea0_.id
2017-02-17 13:44:51.550 DEBUG 4828 --- [nio-8080-exec-2] o.h.h.i.a.t.FromReferenceNode : Resolved : generatedAlias0 -> commentbea0_.id
2017-02-17 13:44:51.552 DEBUG 4828 --- [nio-8080-exec-2] o.h.h.i.a.t.DotNode : getDataType() : topicId -> [email protected]
2017-02-17 13:44:51.553 DEBUG 4828 --- [nio-8080-exec-2] o.h.h.i.a.t.FromReferenceNode : Resolved : generatedAlias0.topicId -> commentbea0_.topicId
2017-02-17 13:44:51.557 DEBUG 4828 --- [nio-8080-exec-2] o.h.h.i.a.HqlSqlBaseWalker : select : finishing up [level=1, statement=select]
2017-02-17 13:44:51.557 DEBUG 4828 --- [nio-8080-exec-2] o.h.h.i.a.HqlSqlWalker : processQuery() : (SELECT ({select clause} commentbea0_.id) (FromClause{level=1} comments commentbea0_) (where (= (commentbea0_.topicId commentbea0_.id topicId) ?)))
2017-02-17 13:44:51.572 DEBUG 4828 --- [nio-8080-exec-2] o.h.h.i.a.u.JoinProcessor : Using FROM fragment [comments commentbea0_]
2017-02-17 13:44:51.572 DEBUG 4828 --- [nio-8080-exec-2] o.h.h.i.a.HqlSqlBaseWalker : select >> end [level=1, statement=select]
2017-02-17 13:44:51.573 DEBUG 4828 --- [nio-8080-exec-2] o.h.h.i.a.QueryTranslatorImpl : --- SQL AST ---
\-[SELECT] QueryNode: 'SELECT' querySpaces (comments)
+-[SELECT_CLAUSE] SelectClause: '{select clause}'
| +-[ALIAS_REF] IdentNode: 'commentbea0_.id as id1_2_' {alias=generatedAlias0, className=seconds47.beans.CommentBean, tableAlias=commentbea0_}
| \-[SQL_TOKEN] SqlFragment: 'commentbea0_.commentDate as commentD2_2_, commentbea0_.commentId as commentI3_2_, commentbea0_.comments as comments4_2_, commentbea0_.topicId as topicId5_2_, commentbea0_.userImage as userImag6_2_, commentbea0_.username as username7_2_'
+-[FROM] FromClause: 'from' FromClause{level=1, fromElementCounter=1, fromElements=1, fromElementByClassAlias=[generatedAlias0], fromElementByTableAlias=[commentbea0_], fromElementsByPath=[], collectionJoinFromElementsByPath=[], impliedElements=[]}
| \-[FROM_FRAGMENT] FromElement: 'comments commentbea0_' FromElement{explicit,not a collection join,not a fetch join,fetch non-lazy properties,classAlias=generatedAlias0,role=null,tableName=comments,tableAlias=commentbea0_,origin=null,columns={,className=seconds47.beans.CommentBean}}
\-[WHERE] SqlNode: 'where'
\-[EQ] BinaryLogicOperatorNode: '='
+-[DOT] DotNode: 'commentbea0_.topicId' {propertyName=topicId,dereferenceType=PRIMITIVE,getPropertyPath=topicId,path=generatedAlias0.topicId,tableAlias=commentbea0_,className=seconds47.beans.CommentBean,classAlias=generatedAlias0}
| +-[ALIAS_REF] IdentNode: 'commentbea0_.id' {alias=generatedAlias0, className=seconds47.beans.CommentBean, tableAlias=commentbea0_}
| \-[IDENT] IdentNode: 'topicId' {originalText=topicId}
\-[NAMED_PARAM] ParameterNode: '?' {name=param0, [email protected]}
2017-02-17 13:44:51.573 DEBUG 4828 --- [nio-8080-exec-2] o.h.h.i.a.ErrorCounter : throwQueryException() : no errors
2017-02-17 13:44:51.585 DEBUG 4828 --- [nio-8080-exec-2] o.h.h.i.a.QueryTranslatorImpl : HQL: select generatedAlias0 from seconds47.beans.CommentBean as generatedAlias0 where generatedAlias0.topicId=:param0
2017-02-17 13:44:51.586 DEBUG 4828 --- [nio-8080-exec-2] o.h.h.i.a.QueryTranslatorImpl : SQL: select commentbea0_.id as id1_2_, commentbea0_.commentDate as commentD2_2_, commentbea0_.commentId as commentI3_2_, commentbea0_.comments as comments4_2_, commentbea0_.topicId as topicId5_2_, commentbea0_.userImage as userImag6_2_, commentbea0_.username as username7_2_ from comments commentbea0_ where commentbea0_.topicId=?
2017-02-17 13:44:51.586 DEBUG 4828 --- [nio-8080-exec-2] o.h.h.i.a.ErrorCounter : throwQueryException() : no errors
2017-02-17 13:44:51.645 DEBUG 4828 --- [nio-8080-exec-2] o.h.SQL : select commentbea0_.id as id1_2_, commentbea0_.commentDate as commentD2_2_, commentbea0_.commentId as commentI3_2_, commentbea0_.comments as comments4_2_, commentbea0_.topicId as topicId5_2_, commentbea0_.userImage as userImag6_2_, commentbea0_.username as username7_2_ from comments commentbea0_ where commentbea0_.topicId=?
2017-02-17 13:44:51.702 DEBUG 4828 --- [nio-8080-exec-2] m.m.a.RequestResponseBodyMethodProcessor : Written [[]] as "application/json" using [org.springfr[email protected]2e3900dc]
2017-02-17 13:44:51.702 DEBUG 4828 --- [nio-8080-exec-2] o.s.w.s.DispatcherServlet : Null ModelAndView returned to DispatcherServlet with name 'dispatcherServlet': assuming HandlerAdapter completed request handling
2017-02-17 13:44:51.702 DEBUG 4828 --- [nio-8080-exec-2] o.s.w.s.DispatcherServlet : Successfully completed request
我不明白这里有什么问题。
任何机构请帮助。我一直试图从最近两天来解决这个问题。
你是否从查询中得到这个错误，或者当你返回响应？ – Patrick
@Patrick当我用请求 – kittu
查询时，我可以看到你有一个实体“评论”（或类似的东西）链接到你的'主题'实体。什么是你的实体配置？你如何定义外键？你使用延迟加载？ – alfcope