Hibernate中Query.list()方法报IllegalArgumentException异常

　　最近在使用Hibernate开发项目，在写好hql语句，并初始化Query对象，执行Query.list()方法时，应用报IllegalArgumentException异常。经网上查询，现已经基本决定原因，是由于在利用hibernate逆向工程生成实体类和映射文件时，数据库字段的numeric类型被逆向成了java实体类中的Doubel类型，然后我觉得这里不应该用包装类，手贱就改成了基本数据类型double，这一改出了问题，数据库中字段的数据类型和java实体类中的属性类型对不上了，出现了IllegalArgumentException异常。解决方法当然是将double类型改回Double类型。我想，如果大家也有这个异常，基本可以断定是由于数据库中的字段的数据类型和java实体类中的属性类型不匹配造成的。

　　现在将我解决问题的过程给大家描述一下：

1：出问题的代码位置：Query.list()方法

public PageModel queryByPage(String where, int start, int limit) {

        StringBuffer hql = new StringBuffer("SELECT Object(o) FROM DsImageVideoData AS o WHERE 1=1");
        StringBuffer hql_count = new StringBuffer("SELECT Count(o) FROM DsImageVideoData AS o WHERE 1=1");

        Session session = hibernateTemplate.getSessionFactory().openSession();    //获得hibernate session对象
        Query query = session.createQuery(hql.toString());    // 获得对应hql语句的查询对象query
        Query query_count = session.createQuery(hql_count.toString()); // 获得对应hql_count语句的查询对象query

        int pageTmp = start;
        int switchPage = (pageTmp - ) * limit;
        query.setFirstResult(switchPage);
        query.setMaxResults();
        PageModel page = new PageModel();
        page.setPageNumber(start);
        page.setObjectsPerPage(limit);
        page.setFullListSize(Integer.valueOf(query_count.list().get().toString()));
        page.setData(query.list());    //query.list()作用是执行查询，出现异常
        return page;
    }

　　以上代码中的page.setData(query.list());出现异常。

2. 异常信息

 严重: Servlet.service() for servlet dispatcher threw exception
 java.lang.IllegalArgumentException
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:)
     at java.lang.reflect.Method.invoke(Method.java:)
     at org.hibernate.property.BasicPropertyAccessor$BasicSetter.set(BasicPropertyAccessor.java:)
     at org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropertyValues(AbstractEntityTuplizer.java:)
     at org.hibernate.tuple.entity.PojoEntityTuplizer.setPropertyValues(PojoEntityTuplizer.java:)
     at org.hibernate.persister.entity.AbstractEntityPersister.setPropertyValues(AbstractEntityPersister.java:)
     at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:)
     at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:)
     at org.hibernate.loader.Loader.doQuery(Loader.java:)
     at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:)
     at org.hibernate.loader.Loader.doList(Loader.java:)
     at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:)
     at org.hibernate.loader.Loader.list(Loader.java:)
     at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:)
     at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:)
     at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:)
     at org.hibernate.impl.SessionImpl.list(SessionImpl.java:)
     at org.hibernate.impl.QueryImpl.list(QueryImpl.java:)
     at com.c503.poss.dao.disaster.DsDisasterDamageDaoImpl.queryByPage(DsDisasterDamageDaoImpl.java:)
     at com.c503.poss.service.disaster.DsDisasterDamageServiceImpl.findByCommon(DsDisasterDamageServiceImpl.java:)
     at com.c503.poss.service.disaster.DsDisasterDamageServiceImpl.findDisasterDamage(DsDisasterDamageServiceImpl.java:)
     at com.c503.poss.ctrl.disaster.DsDisasterDamageController.findDisasterDamage(DsDisasterDamageController.java:)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:)
     at java.lang.reflect.Method.invoke(Method.java:)
     at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.doInvokeMethod(HandlerMethodInvoker.java:)
     at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:)
     at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:)
     at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:)
     at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:)
     at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:)
     at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:)
     at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
     at com.c503.poss.ctrl.sm.SecurityFilter.doFilter(SecurityFilter.java:)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
     at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:)
     at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:)
     at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:)
     at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:)
     at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:)
     at java.lang.Thread.run(Thread.java:)

3. 数据库相关表字段设计，相关字段为data_size和data_time_length

4. 出问题的实体类为：红色的double字体处出错

 package com.c503.poss.model.disaster;

 import java.util.Date;

 /**
  * DsImageVideoData entity. @author MyEclipse Persistence Tools
  */

 public class DsImageVideoData {

     // Fields    

      private Integer id;
      private DsTower dsTowerByEndTowerId;
      private DsLine dsLine;
      private DsTower dsTowerByStartTowerId;
      private DsDisaster dsDisaster;
      private String disasterTypeName;
      private String dataKind;
      private String dataName;
      private String storagePath;
      private double dataSize;
      private double dataTimeLength;
      private String dataFormat;
      private String dataType;
      private String phase;
      private Date time;

     // Constructors

     /** default constructor */
     public DsImageVideoData() {
     }

     /** minimal constructor */
     public DsImageVideoData(DsLine dsLine, DsDisaster dsDisaster) {
         this.dsLine = dsLine;
         this.dsDisaster = dsDisaster;
     }

     // Property accessors

     public Integer getId() {
         return this.id;
     }

     public void setId(Integer id) {
         this.id = id;
     }

     public DsTower getDsTowerByEndTowerId() {
         return this.dsTowerByEndTowerId;
     }

     public void setDsTowerByEndTowerId(DsTower dsTowerByEndTowerId) {
         this.dsTowerByEndTowerId = dsTowerByEndTowerId;
     }

     public DsLine getDsLine() {
         return this.dsLine;
     }

     public void setDsLine(DsLine dsLine) {
         this.dsLine = dsLine;
     }

     public DsTower getDsTowerByStartTowerId() {
         return this.dsTowerByStartTowerId;
     }

     public void setDsTowerByStartTowerId(DsTower dsTowerByStartTowerId) {
         this.dsTowerByStartTowerId = dsTowerByStartTowerId;
     }

     public DsDisaster getDsDisaster() {
         return this.dsDisaster;
     }

     public void setDsDisaster(DsDisaster dsDisaster) {
         this.dsDisaster = dsDisaster;
     }

     public String getDisasterTypeName() {
         return this.disasterTypeName;
     }

     public void setDisasterTypeName(String disasterTypeName) {
         this.disasterTypeName = disasterTypeName;
     }

     public String getDataKind() {
         return this.dataKind;
     }

     public void setDataKind(String dataKind) {
         this.dataKind = dataKind;
     }

     public String getDataName() {
         return this.dataName;
     }

     public void setDataName(String dataName) {
         this.dataName = dataName;
     }

     public String getStoragePath() {
         return this.storagePath;
     }

     public void setStoragePath(String storagePath) {
         this.storagePath = storagePath;
     }

     public double getDataSize() {
         return this.dataSize;
     }

     public void setDataSize(double dataSize) {
         this.dataSize = dataSize;
     }

     public double getDataTimeLength() {
         return this.dataTimeLength;
     }

     public void setDataTimeLength(double dataTimeLength) {
         this.dataTimeLength = dataTimeLength;
     }

     public String getDataFormat() {
         return this.dataFormat;
     }

     public void setDataFormat(String dataFormat) {
         this.dataFormat = dataFormat;
     }

     public String getDataType() {
         return this.dataType;
     }

     public void setDataType(String dataType) {
         this.dataType = dataType;
     }

     public String getPhase() {
         return this.phase;
     }

     public void setPhase(String phase) {
         this.phase = phase;
     }

     public Date getTime() {
         return this.time;
     }

     public void setTime(Date time) {
         this.time = time;
     }
 }

5. 改进

　　将步骤3中实体类中的属性dataSize和dataTimeLength的数据类型给回Double（包括setter和getter中的方法）

【重要参考】：http://www.cnblogs.com/lucky2u/p/3498046.html