如何连接和操作personal geodatabase

import com.esri.arcgis.datasourcesGDB.AccessWorkspaceFactory;<br>import com.esri.arcgis.geodatabase.ICursor;<br>import com.esri.arcgis.geodatabase.IFeatureWorkspace;<br>import com.esri.arcgis.geodatabase.IFeatureWorkspaceProxy;<br>import com.esri.arcgis.geodatabase.IQueryFilter;<br>import com.esri.arcgis.geodatabase.IRow;<br>import com.esri.arcgis.geodatabase.ITable;<br>import com.esri.arcgis.geodatabase.IWorkspace;<br>import com.esri.arcgis.geodatabase.IWorkspaceFactory;<br>import com.esri.arcgis.geodatabase.QueryFilter;<br>import com.esri.arcgis.system.EngineInitializer;<br>import com.esri.arcgis.system.AoInitialize;<br>import com.esri.arcgis.system.esriLicenseExtensionCode;<br>import com.esri.arcgis.system.esriLicenseProductCode;<br>import com.esri.arcgis.systemUI.esriCommandStyles;<br>import com.linar.jintegra.AutomationException;<br>import java.io.IOException;<br><br>import javax.swing.*;<br>import java.awt.*;<br><br><br>public class Geodatabase extends JFrame{<br>    <br>    String people = null;<br>    JFrame frame;<br>    JLabel label; <br>    JLabel peoplela;<br>    <br>    JButton ok; <br>    <br>    JTextArea number;<br>    <br>    <br>    IFeatureWorkspace pFeatWorkspace;<br>    IWorkspace pWorkspace;<br>    String dbLocation;<br>    <br>    <br>    <br>    public Geodatabase () throws Exception{<br>        <br>      setSize(400,200);<br>      setTitle("Selected road population");<br>      getContentPane().setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout());<br>      JLabel label = new JLabel();<br>      JLabel peoplela = new JLabel(this.people);<br>      JButton ok = new JButton();<br>      setVisible(true); <br>      <br>      // add label<br>      label.setFont(new java.awt.Font("Arial", 0, 12));<br>      label.setText("Selected road population is : ");<br>      getContentPane().add(label, new org.netbeans.lib.awtextra.AbsoluteConstraints(10, 30, 200, 20));<br>      <br>      // add ok button<br>      ok.setFont(new java.awt.Font("Arial", 0, 10));<br>      ok.setToolTipText("ok");<br>      ok.setLabel("ok");<br>      ok.setMargin(new java.awt.Insets(2, 2, 2, 2));<br>      getContentPane().add(ok, new org.netbeans.lib.awtextra.AbsoluteConstraints(160, 80, 60, 20));<br>      ok.addActionListener(new java.awt.event.ActionListener() {<br>            public void actionPerformed(java.awt.event.ActionEvent evt) {<br>                okActionPerformed(evt);<br>            }<br>        });<br>      this.dbLocation ="D:\\08\\database.mdb";<br>      this.openPDB();<br>    <br>    }<br>   private static void licenseCheckOut(){<br>   try{<br>    AoInitialize aoInit = new AoInitialize(); aoInit.initialize(<br>        esriLicenseProductCode.esriLicenseProductCodeEngine );<br>        aoInit.checkOutExtension(esriLicenseExtensionCode.esriLicenseExtensionCode3DAnalyst);<br>        System.out.println("licenseChecked out");<br>   }catch (IOException e){<br>       System.out.println("Program Exit: Unable to initialize ArcObjects");<br>       System.exit(0);<br>   }<br> }<br>    // open a personal database with a known path and name<br>   //http://edndoc.esri.com/arcobjects/9.2/NET/c778d2bb-eb36-4793-9c89-20795811c5eb.htm<br>    public void openPDB() throws Exception {      <br>        IWorkspaceFactory pWorkFactory = new  AccessWorkspaceFactory();  <br>        pWorkspace = pWorkFactory.openFromFile(this.dbLocation, 0); <br>        System.out.println("good");<br>        this.pFeatWorkspace = new IFeatureWorkspaceProxy(pWorkspace);<br>        <br>    }<br>    // Opens the SelectedRd table from database<br>    private ITable openTable()throws Exception {<br>        <br>        ITable table = this.pFeatWorkspace.openTable("Bomb_type");<br>        return table;<br>    }<br>    //Specifies a query filter that retrieves all the values from the TNT column.<br>     private IQueryFilter queryFilter() throws Exception{<br>        IQueryFilter queryFilter = new QueryFilter();<br>        return queryFilter;<br>    }<br>     // return database location<br>     <br>     public String locationPDB()throws Exception {<br>        String path = this.pWorkspace.getPathName();<br>        return path;<br>    }<br>      private int rows()throws Exception {<br>        ITable table=openTable();<br>        IQueryFilter queryFilter = queryFilter();<br>        int count1 = table.rowCount(queryFilter);////The number of Rows selected by the specified query.<br>        return count1;<br>        <br>    }<br>       <br>     // Gets all the values from the TNT column from the<br>     //table as a String array. <br>     <br>    public String[] getValues() throws Exception {<br>        Geodatabase database = new Geodatabase();<br>        int rowscount = database.rows();//<br>        String  [] fields = new String [rowscount];<br>        IQueryFilter queryFilter = queryFilter();<br>        ITable table = openTable();<br>        int fieldind = table.findField("TNT");<br>        // ITable_search.An object cursor that can be used to fetch row objects selected by the specified query.<br>        //return value. An reference to a com.esri.arcgis.geodatabase.ICursor<br>        ICursor curs = table.ITable_search(queryFilter, false);<br>        //Provides access to members that return information about the row, <br>        //the table the row belongs to and storing and deleting the row.<br>        IRow row = curs.nextRow();<br>        int j= 0;<br>        while (row != null){   <br>            fields [j] = String.valueOf(row.getValue(fieldind));<br>            row = curs.nextRow();<br>            j++;<br>        }<br>        <br>        return fields;<br>    }<br>      // add all the value fromTNT together. <br>      public int count(String[]field)throws Exception{<br>          System.out.println("count");<br>          int count = 0;<br>          field = this.getValues();         <br>          for (int i=0; i<=field.length;i++){<br>              count += Integer.parseInt(field);<br>              System.out.println(count);<br>          }<br>          return count;<br>          <br>       <br>      }<br>    public void okActionPerformed(java.awt.event.ActionEvent evt){<br>        <br>        System.exit(0);<br>    }<br>    public void printVa (int countPeople){<br>        <br>        <br>    }<br>    public static void main (String []args){<br>       <br>       System.out.println("I'm initializing the use of ArcObjects");<br>       EngineInitializer.initializeVisualBeans();<br>       System.out.println("done.\nNext licensing:");<br>       licenseCheckOut();<br>       System.out.println("No errors. We may have succeeded!");<br>        try {<br>            Geodatabase test = new Geodatabase(); <br>            System.out.println("Geodatabase()called"); <br>        }<br>        catch (Exception e){<br>            System.out.println("exception occur");<br>        }<br>        <br>    }<br>    <br>    <br>     <br><br>}

这是我第一次发贴,出了一些错. 我前面写的话怎莫没了. <br>
上面是我的代码,但是好像有点毛病. 好像还是没有连到我的数据库, 因为执行有没有打印出来System.out.println(count);<br>
请高手们帮我看看, 那里出了错. <br>
先谢了

<img src="images/post/smile/dvbbs/em01.gif" />