上周遇到了这个问题，参数异常，我以为是hibernate 的关系，结果换了JDBC来弄就好了，也没去深究到底是什么原因。今天又遇到这个问题了，和师父同时解决了这个问题。
问题概述：
在由数据库里的表反转实体（自动生成）之后，进行Hibernate查询，tomcat报java.lang.IllegalArgumentException参数异常。如下。
1 2013-12-30 16:37:54 org.apache.catalina.core.StandardWrapperValve invoke 2 严重: Servlet.service() for servlet struts threw exception 3 java.lang.IllegalArgumentException 4 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 5 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 6 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 7 at java.lang.reflect.Method.invoke(Method.java:597) 8 at org.hibernate.property.BasicPropertyAccessor$BasicSetter.set(BasicPropertyAccessor.java:66) 9 at org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropertyValues(AbstractEntityTuplizer.java:360) 10 at org.hibernate.tuple.entity.PojoEntityTuplizer.setPropertyValues(PojoEntityTuplizer.java:221) 11 at org.hibernate.persister.entity.AbstractEntityPersister.setPropertyValues(AbstractEntityPersister.java:3594) 12 at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:152) 13 at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:877) 14 at org.hibernate.loader.Loader.doQuery(Loader.java:752) 15 at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259) 16 at org.hibernate.loader.Loader.doList(Loader.java:2228) 17 at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2125) 18 at org.hibernate.loader.Loader.list(Loader.java:2120) 19 at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:118) 20 at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1596) 21 at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:306) 22 at cn.gx.lms.orgmanager.dao.CustomOrgManagerDaoImpl.queryLiftTypeDic(CustomOrgManagerDaoImpl.java:1924) 23 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 24 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 25 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 26 at java.lang.reflect.Method.invoke(Method.java:597) 27 at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307) 28 at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182) 29 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149) 30 at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106) 31 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) 32 at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) 33 at $Proxy22.queryLiftTypeDic(Unknown Source) 34 at cn.gx.lms.orgmanager.service.CustomOrgManagerServiceImpl.queryLiftTypeDic(CustomOrgManagerServiceImpl.java:611) 35 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 36 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 37 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 38 at java.lang.reflect.Method.invoke(Method.java:597) 39 at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307) 40 at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182) 41 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149) 42 at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106) 43 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) 44 at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) 45 at $Proxy27.queryLiftTypeDic(Unknown Source) 46 at cn.gx.lms.orgmanager.action.CustomOrgManagerAction.liftTypeAndScopeAdd(CustomOrgManagerAction.java:2114) 47 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 48 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 49 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 50 at java.lang.reflect.Method.invoke(Method.java:597) 51 at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:269) 52 at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:170) 53 at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58) 54 at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67) 55 at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51) 56 at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190) 57 at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304) 58 at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190) 59 at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283) 60 at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913) 61 at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449) 62 at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) 63 at javax.servlet.http.HttpServlet.service(HttpServlet.java:723) 64 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) 65 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 66 at cn.gx.lms.common.filter.CodeEncodeClass.doFilter(CodeEncodeClass.java:29) 67 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 68 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 69 at cn.gx.lms.common.filter.AntiSqlInjectionfilter.doFilter(AntiSqlInjectionfilter.java:53) 70 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 71 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 72 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) 73 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) 74 at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:470) 75 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) 76 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) 77 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) 78 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) 79 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861) 80 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606) 81 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) 82 at java.lang.Thread.run(Thread.java:619)
在DAO层的检索如下（采用Criteria面向对象的检索）：
1 @SuppressWarnings("unchecked") 2 @Transactional(propagation = Propagation.NOT_SUPPORTED) 3 public List<LmsLiftTypeDic> queryLiftTypeDic(Map<String, String> conditions) { 4 Criteria c = super.getSessionFactory().getCurrentSession() 5 .createCriteria(LmsLiftTypeDic.class); 6 String dicType = conditions.get("dicType"); 7 if (StringUtil.validateStringNotNull(dicType)) { 8 c.add(Restrictions.eq("dicType", dicType)); 9 } 10 return c.list(); 11 }
实体对应的hbm文件：
1 <?xml version="1.0" encoding="utf-8"?> 2 <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" 3 "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> 4 <!-- Mapping file autogenerated by MyEclipse Persistence Tools --> 5 <hibernate-mapping> 6 <class name="cn.gx.lms.domain.LmsLiftTypeDic" table="LMS_LIFT_TYPE_DIC"> 7 <id name="rowId" type="string"> 8 <column name="ROW_ID" length="32" /> 9 <generator class="uuid.hex" /> 10 </id> 11 <property name="dicName" type="string"> 12 <column name="DIC_NAME" length="200" /> 13 </property> 14 <property name="dicType" type="string"> 15 <column name="DIC_TYPE" length="1" /> 16 </property> 17 <property name="orderNum" type="int"> 18 <column name="ORDER_NUM" /> 19 </property> 20 <property name="createTime" type="date"> 21 <column name="CREATE_TIME" length="7" /> 22 </property> 23 <property name="extends1" type="string"> 24 <column name="EXTENDS_1" length="200" /> 25 </property> 26 <property name="extends2" type="date"> 27 <column name="EXTENDS_2" length="7" /> 28 </property> 29 <property name="extends3" type="int"> 30 <column name="EXTENDS_3" /> 31 </property> 32 </class> 33 </hibernate-mapping>
经测试，数据库中的number类型经Myeclipse的反向生成实体后，自动生成的类型为long，不可与之对应。将hbm文件和实体类中的long改为int对应的类型即可。目测是myeclipse的生成实体的问题，我再也不相信自动生成这回事儿了。。想省事，还是自己好好检查一番吧。