Question

我有实体和带有集合的dto以及oneToMany / manyToOne双向关系

例如：

public class Author implements Serializable {
    private int id;
    private String firstname;
    @OneToMany(mappedBy = "author")
    private Collection<Book> bookList;
    //GETTERS/SETTERS
}

public class Book implements Serializable {
    @ManyToOne
    @JoinColumn(name = "author_id", referencedColumnName = "id", nullable = false, insertable = false, updatable = false)
    private Author author;
    @ManyToOne
    @JoinColumn(name = "categorie_id", referencedColumnName = "id", nullable = false, insertable = false, updatable = false)
    private Categorie categorie;
    @OneToMany(mappedBy = "book")
    private Collection<Edition> editionList;
    //GETTERS/SETTERS
}

public class Categorie implements Serializable {
    private String name;
    @OneToMany(mappedBy = "categorie")
    private Collection<Book> bookList;
    //GETTERS/SETTERS
}

我使用ModelMapper：

    modelMapper.getConfiguration().setMatchingStrategy(MatchingStrategies.STRICT);
   modelMapper.getConfiguration().setFieldAccessLevel(Configuration.AccessLevel.PRIVATE);
modelMapper.getConfiguration().setFieldMatchingEnabled(true);

但是当我尝试将集合和实体映射到DTO时，出现错误。

ModelMapper映射错误：

1）将org.library.webservice.model.Author映射到org.library.webservice.generation.AuthorDTO错误

1个错误 org.modelmapper.MappingException：ModelMapper映射错误：

1）将org.library.webservice.model.Author映射到org.library.webservice.generation.AuthorDTO错误

1个错误 org.modelmapper.internal.Errors.throwMappingExceptionIfErrorsExist（Errors.java:374）在 org.modelmapper.internal.MappingEngineImpl.map（MappingEngineImpl.java:69）在org.modelmapper.ModelMapper.mapInternal（ModelMapper.java:497）处 org.modelmapper.ModelMapper.map（ModelMapper.java:340）在 org.library.webservice.MapperUtils.map（MapperUtils.java:29）位于 org.library.webservice.MapperUtils.lambda $ map $ 0（MapperUtils.java:38）在 java.util.stream.ReferencePipeline $ 3 $ 1.accept（ReferencePipeline.java:193）在 java.util.ArrayList $ ArrayListSpliterator.forEachRemaining（ArrayList.java:1374）在 java.util.stream.AbstractPipeline.copyInto（AbstractPipeline.java:481）在 java.util.stream.AbstractPipeline.wrapAndCopyInto（AbstractPipeline.java:471）在 java.util.stream.ReduceOps $ ReduceOp.evaluateSequential（ReduceOps.java:708）在 java.util.stream.AbstractPipeline.evaluate（AbstractPipeline.java:234）在 java.util.stream.ReferencePipeline.collect（ReferencePipeline.java:499）在org.library.webservice.MapperUtils.map（MapperUtils.java:38）处 org.library.webservice.AbstractService.findAll（AbstractService.java:25）在 org.library.webservice.service.AuthorService.findAllAuthor（AuthorService.java:27）在sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）处 sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62）在 sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）在java.lang.reflect.Method.invoke（Method.java:498）在 org.glassfish.webservices.InstanceResolverImpl $ 1.invoke（InstanceResolverImpl.java:144）在com.sun.xml.ws.server.InvokerTube $ 2.invoke（InvokerTube.java:149）在 com.sun.xml.ws.server.sei.SEIInvokerTube.processRequest（SEIInvokerTube.java:88）在com.sun.xml.ws.api.pipe.Fiber .__ doRun（Fiber.java:1136）处 com.sun.xml.ws.api.pipe.Fiber._doRun（Fiber.java:1050）在 com.sun.xml.ws.api.pipe.Fiber.doRun（Fiber.java:1019）在 com.sun.xml.ws.api.pipe.Fiber.runSync（Fiber.java:877）在 com.sun.xml.ws.api.pipe.helper.AbstractTubeImpl.process（AbstractTubeImpl.java:136）在 org.glassfish.webservices.MonitoringPipe.process（MonitoringPipe.java:142）在 com.sun.xml.ws.api.pipe.helper.PipeAdapter.processRequest（PipeAdapter.java:119）在com.sun.xml.ws.api.pipe.Fiber .__ doRun（Fiber.java:1136）处 com.sun.xml.ws.api.pipe.Fiber._doRun（Fiber.java:1050）在 com.sun.xml.ws.api.pipe.Fiber.doRun（Fiber.java:1019）在 com.sun.xml.ws.api.pipe.Fiber.runSync（Fiber.java:877）在 com.sun.xml.ws.api.pipe.helper.AbstractTubeImpl.process（AbstractTubeImpl.java:136）在 com.sun.enterprise.security.webservices.CommonServerSecurityPipe.processRequest（CommonServerSecurityPipe.java:209）在 com.sun.enterprise.security.webservices.CommonServerSecurityPipe.process（CommonServerSecurityPipe.java:141）在 com.sun.xml.ws.api.pipe.helper.PipeAdapter.processRequest（PipeAdapter.java:119）在com.sun.xml.ws.api.pipe.Fiber .__ doRun（Fiber.java:1136）处 com.sun.xml.ws.api.pipe.Fiber._doRun（Fiber.java:1050）在 com.sun.xml.ws.api.pipe.Fiber.doRun（Fiber.java:1019）在 com.sun.xml.ws.api.pipe.Fiber.runSync（Fiber.java:877）在 com.sun.xml.ws.server.WSEndpointImpl $ 2.process（WSEndpointImpl.java:419）在 com.sun.xml.ws.transport.http.HttpAdapter $ HttpToolkit.handle（HttpAdapter.java:868）在 com.sun.xml.ws.transport.http.HttpAdapter.handle（HttpAdapter.java:422）在 com.sun.xml.ws.transport.http.servlet.ServletAdapter.handle（ServletAdapter.java:169）在 org.glassfish.webservices.JAXWSServlet.doPost（JAXWSServlet.java:169）在javax.servlet.http.HttpServlet.service（HttpServlet.java:706）处 javax.servlet.http.HttpServlet.service（HttpServlet.java:791）在 org.apache.catalina.core.StandardWrapper.service（StandardWrapper.java:1580）在 org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:258）在 org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:160）在 org.apache.catalina.core.StandardPipeline.doInvoke（StandardPipeline.java:652）在 org.apache.catalina.core.StandardPipeline.invoke（StandardPipeline.java:591）在com.sun.enterprise.web.WebPipeline.invoke（WebPipeline.java:99）处 org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:155）在 org.apache.catalina.connector.CoyoteAdapter.doService（CoyoteAdapter.java:371）在 org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:238）在 com.sun.enterprise.v3.services.impl.ContainerMapper $ HttpHandlerCallable.call（ContainerMapper.java:463）在 com.sun.enterprise.v3.services.impl.ContainerMapper.service（ContainerMapper.java:168）在 org.glassfish.grizzly.http.server.HttpHandler.runService（HttpHandler.java:206）在 org.glassfish.grizzly.http.server.HttpHandler.doHandle（HttpHandler.java:180）在 org.glassfish.grizzly.http.server.HttpServerFilter.handleRead（HttpServerFilter.java:242）在 org.glassfish.grizzly.filterchain.ExecutorResolver $ 9.execute（ExecutorResolver.java:119）在 org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter（DefaultFilterChain.java:284）在 org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart（DefaultFilterChain.java:201）在 org.glassfish.grizzly.filterchain.DefaultFilterChain.execute（DefaultFilterChain.java:133）在 org.glassfish.grizzly.filterchain.DefaultFilterChain.process（DefaultFilterChain.java:112）在 org.glassfish.grizzly.ProcessorExecutor.execute（ProcessorExecutor.java:77）在 org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent（TCPNIOTransport.java:539）在 org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent（AbstractIOStrategy.java:112）在 org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0（WorkerThreadIOStrategy.java:117）在 org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access $ 100（WorkerThreadIOStrategy.java:56）在 org.glassfish.grizzly.strategies.WorkerThreadIOStrategy $ WorkerThreadRunnable.run（WorkerThreadIOStrategy.java:137）在 org.glassfish.grizzly.threadpool.AbstractThreadPool $ Worker.doWork（AbstractThreadPool.java:593）在 org.glassfish.grizzly.threadpool.AbstractThreadPool $ Worker.run（AbstractThreadPool.java:573）在java.lang.Thread.run（Thread.java:745）造成原因： java.lang.StackOverflowError在 java.nio.charset.CharsetDecoder。（CharsetDecoder.java:233）在 sun.nio.cs.UTF_8 $ Decoder。（UTF_8.java:84）在 sun.nio.cs.UTF_8 $ Decoder。（UTF_8.java:81）在 sun.nio.cs.UTF_8.newDecoder（UTF_8.java:68）在 java.lang.StringCoding $ StringDecoder。（StringCoding.java:131）在 java.lang.StringCoding $ StringDecoder。（StringCoding.java:122）在 java.lang.StringCoding.decode（StringCoding.java:187）在 java.lang.String。（String.java:426）在 org.postgresql.core.Encoding.decode（Encoding.java:184）位于 org.postgresql.core.PGStream.receiveString（PGStream.java:328）在 org.postgresql.core.v3.QueryExecutorImpl.receiveCommandStatus（QueryExecutorImpl.java:2480）在 org.postgresql.core.v3.QueryExecutorImpl.processResults（QueryExecutorImpl.java:2041）在 org.postgresql.core.v3.QueryExecutorImpl.execute（QueryExecutorImpl.java:288）在 org.postgresql.jdbc.PgStatement.executeInternal（PgStatement.java:430）在org.postgresql.jdbc.PgStatement.execute（PgStatement.java:356）处 org.postgresql.jdbc.PgPreparedStatement.executeWithFlags（PgPreparedStatement.java:168）在 org.postgresql.jdbc.PgPreparedStatement.executeQuery（PgPreparedStatement.java:116）在 org.apache.commons.dbcp2.DelegatingPreparedStatement.executeQuery（DelegatingPreparedStatement.java:82）在 org.apache.commons.dbcp2.DelegatingPreparedStatement.executeQuery（DelegatingPreparedStatement.java:82）在 org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract（ResultSetReturnImpl.java:60）在 org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.getResultSet（AbstractLoadPlanBasedLoader.java:419）在 org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeQueryStatement（AbstractLoadPlanBasedLoader.java:191）在 org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad（AbstractLoadPlanBasedLoader.java:121）在 org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad（AbstractLoadPlanBasedLoader.java:86）在 org.hibernate.loader.entity.plan.AbstractLoadPlanBasedEntityLoader.load（AbstractLoadPlanBasedEntityLoader.java:185）在 org.hibernate.persister.entity.AbstractEntityPersister.load（AbstractEntityPersister.java:4265）在 org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource（DefaultLoadEventListener.java:509）在 org.hibernate.event.internal.DefaultLoadEventListener.doLoad（DefaultLoadEventListener.java:479）在 org.hibernate.event.internal.DefaultLoadEventListener.load（DefaultLoadEventListener.java:220）在 org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad（DefaultLoadEventListener.java:279）在 org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad（DefaultLoadEventListener.java:122）在 org.hibernate.event.internal.DefaultLoadEventListener.onLoad（DefaultLoadEventListener.java:90）在org.hibernate.internal.SessionImpl.fireLoad（SessionImpl.java:1257）在 org.hibernate.internal.SessionImpl.internalLoad（SessionImpl.java:1140）在 org.hibernate.type.EntityType.resolveIdentifier（EntityType.java:682）在org.hibernate.type.EntityType.resolve（EntityType.java:464）处 org.hibernate.type.ManyToOneType.resolve（ManyToOneType.java:239）位于 org.hibernate.engine.internal.TwoPhaseLoad.doInitializeEntity（TwoPhaseLoad.java:172）在 org.hibernate.engine.internal.TwoPhaseLoad.initializeEntity（TwoPhaseLoad.java:129）在 org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.performTwoPhaseLoad（AbstractRowReader.java:238）在 org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.finishUp（AbstractRowReader.java:209）在 org.hibernate.loader.plan.exec.process.internal.ResultSetProcessorImpl.extractResults（ResultSetProcessorImpl.java:133）在 org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad（AbstractLoadPlanBasedLoader.java:122）在 org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad（AbstractLoadPlanBasedLoader.java:86）在 org.hibernate.loader.collection.plan.AbstractLoadPlanBasedCollectionInitializer.initialize（AbstractLoadPlanBasedCollectionInitializer.java:87）在 org.hibernate.persister.collection.AbstractCollectionPersister.initialize（AbstractCollectionPersister.java:691）在 org.hibernate.event.internal.DefaultInitializeCollectionEventListener.onInitializeCollection（DefaultInitializeCollectionEventListener.java:75）在 org.hibernate.internal.SessionImpl.initializeCollection（SessionImpl.java:2246）在 org.hibernate.collection.internal.AbstractPersistentCollection $ 4.doWork（AbstractPersistentCollection.java:571）在 org.hibernate.collection.internal.AbstractPersistentCollection.withTemporarySessionIfNeeded（AbstractPersistentCollection.java:253）在 org.hibernate.collection.internal.AbstractPersistentCollection.initialize（AbstractPersistentCollection.java:567）在 org.hibernate.collection.internal.AbstractPersistentCollection.read（AbstractPersistentCollection.java:138）在 org.hibernate.collection.internal.AbstractPersistentCollection $ 1.doWork（AbstractPersistentCollection.java:167）在 org.hibernate.collection.internal.AbstractPersistentCollection $ 1.doWork（AbstractPersistentCollection.java:152）在 org.hibernate.collection.internal.AbstractPersistentCollection.withTemporarySessionIfNeeded（AbstractPersistentCollection.java:253）在 org.hibernate.collection.internal.AbstractPersistentCollection.readSize（AbstractPersistentCollection.java:151）在 org.hibernate.collection.internal.PersistentBag.size（PersistentBag.java:261）在 org.modelmapper.internal.converter.IterableConverter.getSourceLength（IterableConverter.java:87）在 org.modelmapper.internal.converter.IterableConverter.convert（IterableConverter.java:38）在 org.modelmapper.internal.MappingEngineImpl.convert（MappingEngineImpl.java:336） [.................]

当我删除实体上的收藏集时，这是可行的有什么问题吗？

谢谢

带有ModelMapper和实体集合的StackOverflowError

0 个答案: