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Xin chào và cảm ơn vì xem ;-)Hibernate ClassCastException trong GWT tổ chức chế độ chỉ
vấn đề của chúng tôi/lỗi là:
javax.persistence.PersistenceException: [PersistenceUnit: PUname] Unable to build EntityManagerFactory
...
Caused by: org.hibernate.HibernateException: Could not instantiate dialect class
...
Caused by: java.lang.ClassCastException: org.hibernate.dialect.MySQLDialect cannot be cast to org.hibernate.dialect.Dialect
...
(xem toàn bộ stack trace ở phía dưới)
Nó xảy ra trong ứng dụng web dựa trên GWT sử dụng các công nghệ sau:
- Maven
- Hibernate EntityManager/JPA
- Guice
- GWT
- GWT-P
- GWT Maven Plugin
- ...
Thực tế với stress là nó không làm việc trong Tomcat. Chỉ trong chế độ phát triển được gọi là chế độ được lưu trữ (với Jetty), sử dụng GWT Maven Plugin (với mục tiêu gwt: run), chúng tôi nhận được ClassCastException. Chúng tôi đã chơi với các phụ thuộc Hibernate mà không có may mắn (thêm hibernate-validator và/hoặc hibernate-jpa-2.0-api). ClassCastException được ném khi khởi động JPA trước khi bất kỳ dịch vụ nào thực sự được sử dụng. BTW: JPA được thiết lập sử dụng Guice:
install(new JpaPersistModule("PUname"));
filter("/*").through(PersistFilter.class);
Nó có thể là đáng nói đến là việc vô hiệu hóa các thiết lập phương ngữ (trong persistence.xml) tạo ra ClassCastException khác cũng trên JPA khởi động:
javax.persistence.PersistenceException: [PersistenceUnit: dsmgmt] Unable to build EntityManagerFactory
...
Caused by: org.hibernate.HibernateException: Unable to instantiate specified TransactionFactory class [org.hibernate.engine.transaction.internal.jdbc.JdbcTransactionFactory]
...
Caused by: java.lang.ClassCastException: org.hibernate.engine.transaction.internal.jdbc.JdbcTransactionFactory cannot be cast to org.hibernate.engine.transaction.spi.TransactionFactory
...
Tại sao nó phá vỡ trong Jetty? Điều gì có thể gây ra nó hoặc làm thế nào nó có thể được cố định?
File: META-INF/persistence.xml
<persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1.0" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
<persistence-unit name="PUname" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<class>our.test.class</class>
<properties>
<property name="hibernate.connection.username" value="user"/>
<property name="hibernate.connection.password" value="pass"/>
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
<property name="hibernate.connection.url" value="jdbc:mysql://machine:3306/db"/>
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>
<property name="hibernate.hbm2ddl.auto" value="update"/>
</properties>
</persistence-unit>
</persistence>
lọ của chúng tôi trong webapp:
445.288 antlr-2.7.7.jar
150.774 antlr-runtime-3.1.3.jar
4.467 aopalliance-1.0.jar
57.963 classmate-0.5.4.jar
575.389 commons-collections-3.2.1.jar
52.543 commons-exec-1.1.jar
59.590 commons-fileupload-1.2.2.jar
163.151 commons-io-2.1.jar
284.220 commons-lang-2.6.jar
313.898 dom4j-1.6.1.jar
131.929 dsmgmt-shared-0.1-SNAPSHOT.jar
1.006.424 ehcache-core-2.4.3.jar
710.492 guice-3.0.jar
36.998 guice-assistedinject-3.0.jar
27.633 guice-persist-3.0.jar
65.012 guice-servlet-3.0.jar
5.004.997 gwt-servlet-2.3.0.jar
28.339 gwtp-dispatch-server-0.6.jar
17.184 gwtp-dispatch-server-guice-0.6.jar
30.402 gwtp-dispatch-shared-0.6.jar
81.426 hibernate-commons-annotations-4.0.0.Final.jar
4.347.499 hibernate-core-4.0.0.CR6.jar
127.259 hibernate-ehcache-4.0.0.CR6.jar
471.832 hibernate-entitymanager-4.0.0.CR6.jar
102.661 hibernate-jpa-2.0-api-1.0.1.Final.jar
366.592 hibernate-validator-4.2.0.Final.jar
70.928 jandex-1.0.3.Final.jar
644.148 javassist-3.12.1.GA.jar
2.497 javax.inject-1.jar
60.542 jboss-logging-3.1.0.CR1.jar
11.209 jboss-transaction-api_1.1_spec-1.0.0.Final.jar
859.016 jna-3.2.3.jar
213.781 jsch-0.1.44-1.jar
281.579 jsoup-1.6.1.jar
481.535 log4j-1.2.16.jar
789.885 mysql-connector-java-5.1.18.jar
1.351.561 org.eclipse.jgit-1.0.0.201106090707-r.jar
601.287 pd4ml-3.80b1.jar
149.846 pd4ml-ss-css-3.80b1.jar
25.962 slf4j-api-1.6.4.jar
9.748 slf4j-log4j12-1.6.4.jar
743.673 sqljet-1.0.4.jar
172.023 stringtemplate-3.2.jar
1.889.196 svnkit-1.3.5.jar
251.371 trilead-ssh2-build213-svnkit-1.3-patch.jar
47.433 validation-api-1.0.0.GA.jar
109.318 xml-apis-1.0.b2.jar
Các stacktrace đầy đủ:
javax.persistence.PersistenceException: [PersistenceUnit: PUname] Unable to build EntityManagerFactory
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:916)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:887)
at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:56)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:63)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:47)
at com.google.inject.persist.jpa.JpaPersistService.start(JpaPersistService.java:94)
at com.google.inject.persist.PersistFilter.init(PersistFilter.java:77)
at com.google.inject.servlet.FilterDefinition.init(FilterDefinition.java:114)
at com.google.inject.servlet.ManagedFilterPipeline.initPipeline(ManagedFilterPipeline.java:98)
at com.google.inject.servlet.GuiceFilter.init(GuiceFilter.java:172)
at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:97)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:593)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1220)
at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:513)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448)
at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:468)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.handler.RequestLogHandler.doStart(RequestLogHandler.java:115)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.Server.doStart(Server.java:222)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:672)
at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509)
at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1068)
at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:811)
at com.google.gwt.dev.DevMode.main(DevMode.java:311)
Caused by: org.hibernate.HibernateException: Could not instantiate dialect class
at org.hibernate.service.jdbc.dialect.internal.DialectFactoryImpl.constructDialect(DialectFactoryImpl.java:82)
at org.hibernate.service.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:64)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:142)
at org.hibernate.service.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:81)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:160)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:133)
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:71)
at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2259)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2255)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1724)
at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:76)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:907)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:887)
at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:56)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:63)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:47)
at com.google.inject.persist.jpa.JpaPersistService.start(JpaPersistService.java:94)
at com.google.inject.persist.PersistFilter.init(PersistFilter.java:77)
at com.google.inject.servlet.FilterDefinition.init(FilterDefinition.java:114)
at com.google.inject.servlet.ManagedFilterPipeline.initPipeline(ManagedFilterPipeline.java:98)
at com.google.inject.servlet.GuiceFilter.init(GuiceFilter.java:172)
at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:97)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:593)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1220)
at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:513)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448)
at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:468)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.handler.RequestLogHandler.doStart(RequestLogHandler.java:115)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.Server.doStart(Server.java:222)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:672)
at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509)
at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1068)
at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:811)
at com.google.gwt.dev.DevMode.main(DevMode.java:311)
Caused by: java.lang.ClassCastException: org.hibernate.dialect.MySQLDialect cannot be cast to org.hibernate.dialect.Dialect
at org.hibernate.service.jdbc.dialect.internal.DialectFactoryImpl.constructDialect(DialectFactoryImpl.java:73)
at org.hibernate.service.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:64)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:142)
at org.hibernate.service.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:81)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:160)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:133)
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:71)
at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2259)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2255)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1724)
at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:76)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:907)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:887)
at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:56)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:63)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:47)
at com.google.inject.persist.jpa.JpaPersistService.start(JpaPersistService.java:94)
at com.google.inject.persist.PersistFilter.init(PersistFilter.java:77)
at com.google.inject.servlet.FilterDefinition.init(FilterDefinition.java:114)
at com.google.inject.servlet.ManagedFilterPipeline.initPipeline(ManagedFilterPipeline.java:98)
at com.google.inject.servlet.GuiceFilter.init(GuiceFilter.java:172)
at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:97)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:593)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1220)
at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:513)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448)
at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:468)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.handler.RequestLogHandler.doStart(RequestLogHandler.java:115)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.Server.doStart(Server.java:222)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:672)
at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509)
at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1068)
at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:811)
at com.google.gwt.dev.DevMode.main(DevMode.java:311)
Trân trọng, Alexander