wen1995wen 2015-11-07 09:56 采纳率: 0%
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已结题

myeclipse的jtable为何获取不到数据库的内容

package main;
import java.sql.ResultSet;
import java.sql.Statement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.util.Vector;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;

public class DisplayPerson extends javax.swing.JFrame {

/** Creates new form display */
public DisplayPerson() {
      createTableModel();
}

 private void createTableModel() {
     JTable JTableView = new JTable();
     jScrollPane1 = new javax.swing.JScrollPane();
     DefaultTableModel JTableModel = new DefaultTableModel(200,2);
     JTableModel.addColumn("PersonId");
     JTableModel.addColumn("age");
     JTableView.setModel(JTableModel);

    setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

    JTableView.setModel(new javax.swing.table.DefaultTableModel(
            new Object[][] { }, new String[] { "PersonId",
                    "age"}));
    jScrollPane1.setViewportView(JTableView);
    javax.swing.GroupLayout layout = new javax.swing.GroupLayout(
            getContentPane());
    getContentPane().setLayout(layout);
    layout.setHorizontalGroup(layout.createParallelGroup(
            javax.swing.GroupLayout.Alignment.LEADING).addGroup(
            layout.createSequentialGroup()
                    .addContainerGap()
                    .addComponent(jScrollPane1,
                            javax.swing.GroupLayout.PREFERRED_SIZE, 375,
                            javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addContainerGap(13, Short.MAX_VALUE)));
    layout.setVerticalGroup(layout.createParallelGroup(
            javax.swing.GroupLayout.Alignment.LEADING).addGroup(
            layout.createSequentialGroup()
                    .addContainerGap()
                    .addComponent(jScrollPane1,
                            javax.swing.GroupLayout.PREFERRED_SIZE, 275,
                            javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE,
                            Short.MAX_VALUE)));

    pack();

     String driverName = "com.microsoft.sqlserver.jdbc.SQLServerDriver";   //加载JDBC驱动  
       String dbURL = "jdbc:sqlserver://127.0.0.1:1433; DatabaseName=student";  
       String userName = "root";    
       String userPwd = "123";  
       Connection dbConn;  
       try {  
       Class.forName(driverName);  
       dbConn = DriverManager.getConnection(dbURL, userName, userPwd);  
       System.out.println("Connection Successful!"); 
       Statement st = dbConn.createStatement();
       ResultSet rs =  st.executeQuery("select * from Person");
       while (rs.next())
       {
              Vector<Integer> vcRows = new Vector<Integer>();
              vcRows.addElement(rs.getInt(1));
              vcRows.addElement(rs.getInt(2));
              // JTableModel.addRow(rs.getInt(1)); //error
              // JTableModel.addRow(rs.getString(2)); //error
              JTableModel.addRow(vcRows); //添加一行记录到表格模板中
       }
       //5.关闭连接
       rs.close();
       st.close();
       dbConn.close();
      // DBConnection.closeStmtAndCon();  //关闭相关连接
       } catch (Exception e) {  
       e.printStackTrace();  
       }  

}

public static void main(String args[]) {
    java.awt.EventQueue.invokeLater(new Runnable() {
        public void run() {
            new DisplayPerson().setVisible(true);

        }
    });
}

//GEN-BEGIN:variables
// Variables declaration - do not modify
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTable JTableView;


// End of variables declaration//GEN-END:variables

}

  • 写回答

2条回答 默认 最新

  • 毕小宝 博客专家认证 2015-11-08 06:13
    关注

    没有环境不能帮忙测试,只能靠你自己单步调试下,看看数据库查询是否有结果呢?

    评论

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