无法实例化默认的 tuplizer 异常

Question

最近我将休眠从 3.1 更新到 4.3，我正在尝试使用注释而不是 xml.With Xml 一切正常，注释抛出一堆 exceptions.And我坚持的最后一个是下面的堆栈跟踪，请阐明 it.I 非常需要帮助，因为堆栈跟踪没有给我任何特定的工作区域。我在用休眠 4.3 Java 助手 3.18

我尝试使用每个人都建议的 javaassist jar，但没有帮助 me.However 我有疑问，hibernate 4.5 不推荐使用 buildSessionFactory，这是否是罪魁祸首？如果有任何帮助，只需包括我的 HibernateUtils

                connProperties.setProperty( "hibernate.connection.datasource", "java:comp/env/" + MASTER_JDBC_RESOURCE_NAME );
                configuration = new Configuration();
                configuration.addProperties(connProperties);
                sessionFactory = configuration.configure().buildSessionFactory();
                Properties hibernateProperties = configuration.getProperties();
                for (Object k : hibernateProperties.keySet()) {
                    System.out.println("Hibernate Key "+k.toString());
                }
                String testCon = hibernateProperties.getProperty("hibernate.test_connections");
                testConnections = StringUtils.stringToBool(testCon);

我的堆栈跟踪

org.hibernate.HibernateException: Unable to instantiate default tuplizer [org.hibernate.tuple.component.PojoComponentTuplizer] at org.hibernate.tuple.component.ComponentTuplizerFactory.constructTuplizer(ComponentTuplizerFactory.java:101) at org.hibernate.tuple.component.ComponentTuplizerFactory.constructDefaultTuplizer(ComponentTuplizerFactory.java:122) at org.hibernate.tuple.component.ComponentMetamodel.(ComponentMetamodel.java:81) at org.hibernate.mapping.Component.getType(Component.java:180) at org.hibernate.mapping.SimpleValue.isValid(SimpleValue.java:322) at org.hibernate.mapping.RootClass.validate(RootClass.java:271) at org.hibernate.cfg.Configuration.validate(Configuration.java:1360) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1851) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1930) at wadetech.DB.base.HibernateUtils.(HibernateUtils.java:111) at wadetech.DB.base.BaseDAO.(BaseDAO.java:43) at wadetech.DB.DAOS.__MaintenanceDAO.(__MaintenanceDAO.java:10) at com.at.project.utils.runtime.RuntimeModifier.HasExecuted(RuntimeModifier.java:127) at wadetech.listeners.ModificationScriptStartupListener.contextInitialized(ModificationScriptStartupListener.java:47) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5016) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5528) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1575) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1565) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:526) at org.hibernate.tuple.component.ComponentTuplizerFactory.constructTuplizer(ComponentTuplizerFactory.java:98) ... 22 more Caused by: org.hibernate.PropertyNotFoundException: Could not find a setter for property bytes in class java.lang.String at org.hibernate.property.BasicPropertyAccessor.createSetter(BasicPropertyAccessor.java:246) at org.hibernate.property.BasicPropertyAccessor.getSetter(BasicPropertyAccessor.java:240) at org.hibernate.mapping.Property.getSetter(Property.java:328) at org.hibernate.tuple.component.PojoComponentTuplizer.buildSetter(PojoComponentTuplizer.java:159) at org.hibernate.tuple.component.AbstractComponentTuplizer.(AbstractComponentTuplizer.java:65) at org.hibernate.tuple.component.PojoComponentTuplizer.(PojoComponentTuplizer.java:59) ... 27 more

感谢您的帮助

Answer 1

我在谷歌上搜索了一个解决方案，不幸的是，大多数为其他人解决的答案都没有帮助 me.A 下面提到了几个投票最多的答案：

使用 javaassist.jar 并确保您使用它时与您的休眠版本兼容。对于 hibernate 4.3.11 javaassist 3.18 没问题。
确保为所有属性定义匹配 getters/setters。

我的案例与案例 2 类似，所以如果有人遇到这些错误并且如果案例 1 对您有帮助，您唯一能做的就是全面检查并比较您的实体 class table 和列名。对我来说，我的任务是将映射从 XML 移动到注释，并且由于此迁移而面临问题的任何人都需要交叉检查其实体 class 与相应的 .hbm.xml 文件。

无法实例化默认的 tuplizer 异常

Unable to instantiate default tuplizer Exception

java

mapping

annotations

hibernate

exception