无法转换org.postgresql.util.PGobject类型的对象

时间：2014-04-24 13:16:23

标签： hibernate postgresql jpa postgis hibernate-spatial

我在使用Hibernate Spatial和PostGIS时遇到问题。我有一个像这样的字段的实体：

public class LocationBean {
  @Id
  @GeneratedValue(strategy = GenerationType.AUTO)
  private long id;

  @Type(type = "org.hibernate.spatial.GeometryType")
  private Point location;
}

我遇到的问题是我无法从数据库中加载任何这些实体，除非该实体的location为null。如果它不为null，我会收到以下错误：

Exception: Can't convert object of type org.postgresql.util.PGobject
javax.el.ELException: /protected/topPanel/searchBar.xhtml @27,57 completeMethod="#{toppanelbb.completeSearchBar}": java.lang.IllegalArgumentException: Can't convert object of type org.postgresql.util.PGobject
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:111)
at org.primefaces.component.autocomplete.AutoComplete.broadcast(AutoComplete.java:337)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790)
at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:931)
at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:78)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:344)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:70)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
at org.glassfish.tyrus.servlet.TyrusServletFilter.doFilter(TyrusServletFilter.java:253)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
at org.ocpsoft.rewrite.servlet.RewriteFilter.doFilter(RewriteFilter.java:205)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:316)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:357)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544)
at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.IllegalArgumentException: Can't convert object of type org.postgresql.util.PGobject
at org.hibernate.spatial.dialect.postgis.PGGeometryValueExtractor.toJTS(PGGeometryValueExtractor.java:113)
at org.hibernate.spatial.dialect.AbstractJTSGeometryValueExtractor.doExtract(AbstractJTSGeometryValueExtractor.java:50)
at org.hibernate.type.descriptor.sql.BasicExtractor.extract(BasicExtractor.java:64)
at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:267)
at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:263)
at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:253)
at org.hibernate.type.AbstractStandardBasicType.hydrate(AbstractStandardBasicType.java:338)
at org.hibernate.persister.entity.AbstractEntityPersister.hydrate(AbstractEntityPersister.java:2969)
at org.hibernate.loader.Loader.loadFromResultSet(Loader.java:1695)
at org.hibernate.loader.Loader.instanceNotYetLoaded(Loader.java:1627)
at org.hibernate.loader.Loader.getRow(Loader.java:1514)
at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:725)
at org.hibernate.loader.Loader.processResultSet(Loader.java:952)
at org.hibernate.loader.Loader.doQuery(Loader.java:920)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:354)
at org.hibernate.loader.Loader.doList(Loader.java:2553)
at org.hibernate.loader.Loader.doList(Loader.java:2539)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2369)
at org.hibernate.loader.Loader.list(Loader.java:2364)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:496)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:387)
at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:231)
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1264)
at org.hibernate.internal.QueryImpl.list(QueryImpl.java:103)
at org.hibernate.jpa.internal.QueryImpl.list(QueryImpl.java:573)
at org.hibernate.jpa.internal.QueryImpl.getResultList(QueryImpl.java:449)
at com.sun.enterprise.container.common.impl.QueryWrapper.getResultList(QueryWrapper.java:84)
at com.dobe.app.backingbeans.TopPanelBackingBean.completeSearchBar(TopPanelBackingBean.java:289)
at com.dobe.app.backingbeans.TopPanelBackingBean$Proxy$_$$_WeldClientProxy.completeSearchBar(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.sun.el.parser.AstValue.invoke(AstValue.java:275)
at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:304)
at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:40)
at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
... 45 more

奇怪的是，我可以坚持下去，但不能加载它们。例如，如果我做了类似的事情：

LocationBean loc = new LocationBean();
loc.setLocation(new GeometryFactory.createPoint(new Coordinate(lon, lat));
// persist to db...

正确地将该点正确存储在Postgresql数据库中并查询它是否有效。只有当我加载它时，它才起作用。

除了位置字段之外，我还可以加载类中的其他字段。例如：

Query query = em.createQuery("SELECT l.id from LocationBean l  WHERE within(v.location, :filter) = true", Long.class);

可行，但是：

Query query = em.createQuery("SELECT l from LocationBean l  WHERE within(v.location, :filter) = true", LocationBean.class);

不会。

这些是我的pom.xml中的依赖项：

    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>4.3.5.Final</version>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-entitymanager</artifactId>
        <version>4.3.5.Final</version>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-spatial</artifactId>
        <version>4.3-SNAPSHOT</version>
    </dependency>
    <dependency>
        <groupId>postgresql</groupId>
        <artifactId>postgresql</artifactId>
        <version>9.2-1002.jdbc4</version>
    </dependency>
    <dependency>
        <groupId>org.postgis</groupId>
        <artifactId>postgis-jdbc</artifactId>
        <version>1.5.2</version>
    </dependency>

我能尝试什么想法？我目前有一个解决方法，我只使用持久化的GeometryType进行查询，但是不能将它加载到java对象中，但我对这个解决方案不满意。谢谢！

1 个答案:

答案 0 :(得分：7)

我遇到了类似的问题 我使用以下内容：

  1. Tomcat 8.0.3
  2. Hibernate版本4.3.6与Hibernate Spatial
  3. Tomcat的JDBC连接池

    4. 由于类的加载方式，会发生错误 您可能在tomcat lib文件夹中有postgres驱动程序jar，在应用程序的WEB-INF / lib文件夹中有postgis jar。
    您必须将两个jar文件放在同一个地方，并且只放在那个地方。

    如果您收到以下异常：

      

    java.lang.IllegalArgumentException：无法转换org.postgis.PGgeometry类型的对象

    ...你在两个地方都有jar（tomcat lib和WEB-INF / lib）。这是我遇到的问题。只需确保罐子不会进入WEB_INF / lib文件夹。

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