Iname.open()类型转换异常

  本人将shp文件导入到空间数据库，发生错误，一直没解决，请各位帮助。

  private void IFeatureDataConverter_ConvertFeatureClass_Example(IWorkspace sourceWorkspace, IWorkspace targetWorkspace, String nameOfSourceFeatureClass, String nameOfTargetFeatureClass){
        try{
      //create source workspace name
         IFeatureDataset pFeatureDataset=((IFeatureWorkspace) targetWorkspace).openFeatureDataset("TestArcGisFile"); //存在数据库的要素数据集;
         IFeatureDatasetName pOutFeatureDSName = (IFeatureDatasetName)new FeatureDatasetName();
         pOutFeatureDSName = (IFeatureDatasetName)pFeatureDataset.getFullName();
         IDataset sourceWorkspaceDataset = (IDataset)sourceWorkspace;
         IDataset targetWorkspaceDataset = (IDataset)targetWorkspace;
         IName sourceWorkspaceDatasetName = sourceWorkspaceDataset.getFullName();
         IName targetWorkspaceDatasetName = targetWorkspaceDataset.getFullName();
         IWorkspaceName sourceWorkspaceName = (IWorkspaceName)sourceWorkspaceDatasetName;
         sourceWorkspaceName.setWorkspaceFactoryProgID("esriDataSourcesFile.ShapefileWorkspaceFactory");
         sourceWorkspaceName.setPathName(shapeFileFolder);
         IWorkspaceName targetWorkspaceName = (IWorkspaceName)targetWorkspaceDatasetName;
         //create source dataset name       
         IFeatureClassName sourceFeatureClassName = new FeatureClassName();
         IDatasetName sourceDatasetName = (IDatasetName)sourceFeatureClassName;
         sourceDatasetName.setWorkspaceNameByRef(sourceWorkspaceName);
         sourceDatasetName.setName(nameOfSourceFeatureClass);     
        
         //create target dataset name       
         IFeatureClassName targetFeatureClassName = new FeatureClassName();
         IDatasetName targetDatasetName = (IDatasetName)targetFeatureClassName;
         targetDatasetName.setWorkspaceNameByRef(targetWorkspaceName);
         targetDatasetName.setName(nameOfTargetFeatureClass);
         //Open input Featureclass to get field definitions.
        
        
         IName sourceName = (IName)sourceWorkspaceName;
         System.out.println("sourceName.open()==="+sourceName.open());
         IFeatureClass sourceFeatureClass =(IFeatureClass)sourceName.open();  ///出现异常
       
    
         //Validate the field names because you are converting between different workspace types.       
         IFieldChecker fieldChecker = new FieldChecker();
         IFields targetFeatureClassFields[] = new IFields[1];
         IFields sourceFeatureClassFields = sourceFeatureClass.getFields();
         IEnumFieldError[] enumFieldError = new IEnumFieldError[1];
         // Most importantly set the input and validate workspaces! 
         fieldChecker.setInputWorkspace(sourceWorkspace);
         fieldChecker.setValidateWorkspaceByRef(targetWorkspace);
         fieldChecker.validate(sourceFeatureClassFields,enumFieldError,targetFeatureClassFields);
         if (enumFieldError != null){
             System.out.println("Errors were encountered during field validation.");
         }
         String shapeFieldName = sourceFeatureClass.getShapeFieldName();
         int shapeFieldIndex = sourceFeatureClass.findField(shapeFieldName);
         IField shapeField = sourceFeatureClassFields.getField(shapeFieldIndex);
         // Get the geometry definition from the shape field and clone it.
         IGeometryDef geometryDef = shapeField.getGeometryDef();
         IClone geometryDefClone = (IClone)geometryDef;
         IClone targetGeometryDefClone = geometryDefClone.esri_clone();
         IGeometryDef targetGeometryDef = (IGeometryDef)targetGeometryDefClone;
         // Cast the IGeometryDef to the IGeometryDefEdit interface.
         IGeometryDefEdit targetGeometryDefEdit = (IGeometryDefEdit)
             targetGeometryDef;
         // Set the IGeometryDefEdit properties.
         targetGeometryDefEdit.setGridCount(1);
         targetGeometryDefEdit.setGridSize(0, 0.75);
         IQueryFilter queryFilter = new QueryFilter();
         queryFilter.setWhereClause("");
         IFeatureDataConverter featureDataConverter = new FeatureDataConverter();
         IEnumInvalidObject enumInvalidObject=featureDataConverter.convertFeatureClass(sourceFeatureClassName,
             queryFilter, pOutFeatureDSName, targetFeatureClassName, targetGeometryDef,targetFeatureClassFields[0], "", 1000, 0);
         // Check for errors.
         IInvalidObjectInfo invalidObjectInfo = null;
         enumInvalidObject.reset();
      
        
         while ((invalidObjectInfo = enumInvalidObject.next()) != null){
             System.out.println("Errors occurred for the following feature: " +invalidObjectInfo.getInvalidObjectID());
         }
         System.out.println("导入成功");
        } catch (Exception e) {
   e.printStackTrace();
         System.out.println("导入失败");
  }
     }

 

错误异常为：

java.lang.ClassCastException: com.esri.arcgis.interop.NativeObjRef cannot be cast to com.esri.arcgis.geodatabase.IFeatureClass
 at com.trendcom.shapeFile.ShapeFileOpration.IFeatureDataConverter_ConvertFeatureClass_Example(ShapeFileOpration.java:123)
 at com.trendcom.shapeFile.ShapeFileOpration.ConvertShapeFile2GDB(ShapeFileOpration.java:51)
 at com.trendcom.shapeFile.ShapeFileOpration.main(ShapeFileOpration.java:45)