Question

IllegalArgumentException occurred calling getter of 谁给看看这个错

Caused by: org.hibernate.PropertyAccessException: IllegalArgumentException occurred calling getter of entity.Emp.empId
at org.hibernate.property.BasicPropertyAccessor$BasicGetter.get(BasicPropertyAccessor.java:171)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.getIdentifier(AbstractEntityTuplizer.java:176)
at org.hibernate.persister.entity.AbstractEntityPersister.getIdentifier(AbstractEntityPersister.java:3582)
at org.hibernate.persister.entity.AbstractEntityPersister.isTransient(AbstractEntityPersister.java:3298)
at org.hibernate.engine.ForeignKeys.isTransient(ForeignKeys.java:181)
at org.hibernate.engine.ForeignKeys.getEntityIdentifierIfNotUnsaved(ForeignKeys.java:218)
at org.hibernate.type.EntityType.getIdentifier(EntityType.java:407)
at org.hibernate.type.ManyToOneType.nullSafeSet(ManyToOneType.java:87)
at org.hibernate.param.PositionalParameterSpecification.bind(PositionalParameterSpecification.java:45)
at org.hibernate.loader.hql.QueryLoader.bindParameterValues(QueryLoader.java:491)
at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1567)
at org.hibernate.loader.Loader.doQuery(Loader.java:673)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
at org.hibernate.loader.Loader.doList(Loader.java:2217)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2108)
at org.hibernate.loader.Loader.list(Loader.java:2103)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:378)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:340)
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1122)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
at org.springframework.orm.hibernate3.HibernateTemplate$30.doInHibernate(HibernateTemplate.java:921)
at org.springframework.orm.hibernate3.HibernateTemplate$30.doInHibernate(HibernateTemplate.java:1)
at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:406)
... 20 more
Caused by: java.lang.IllegalArgumentException: object is not an instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.hibernate.property.BasicPropertyAccessor$BasicGetter.get(BasicPropertyAccessor.java:145)
... 43 more

为什么用？加参数就不行？而用=+参数就可以呢，所有类的set get方法没问题啊

Answer 1

find(String queryString , Object value); 我看你id是int类型的，改成String或者Integer