根据表名获得字段名

根据表名获得字段名

//开发工具Eclipse3.2,SQLServer2000
 

import  java.sql.Connection;
import  java.sql.DriverManager;
import  java.sql.ResultSet;
import  java.sql.SQLException;
import  java.sql.Statement;

/**/ /*
 *@author 我为J狂 建立日期 2007-5-4
 *
 */

public   class  MetaDataTest
{
    public static void main(String[] args)
    {
        System.out.println(" 表mytable中的字段： " + getAllFields(" mytable ")); // 取出数据库db中的表mytable中的所有字段名
    }

    public static String getAllFields(String myTable)
    {
        Connection con = null;
        Statement st = null;
        ResultSet rs = null;
        String allFields = " ";
        String str = " ";
        java.sql.ResultSetMetaData rsm = null;
        try
        {
            Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
            con = DriverManager
                    .getConnection(
                            "jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=db",
                            "sa", "");
            st = con.createStatement();
            rs = st.executeQuery("select * from " + myTable);
            rsm = rs.getMetaData();
            int num = rsm.getColumnCount();
            for (int i = 1; i <= num; i++)
            {
                allFields = str + rsm.getColumnName(i) + " ";
                str = allFields;
            }
        } catch (Exception ex)
        {
            ex.printStackTrace();
            return "";
        } finally
        {
            if (rs != null)
            {

                try
                {
                    rs.close();
                } catch (SQLException e)
                {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                rs = null;
            }
            if (st != null)
            {

                try
                {
                    st.close();
                } catch (SQLException e)
                {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                st = null;
            }
            if (con != null)
            {

                try
                {
                    con.close();
                } catch (SQLException e)
                {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                con = null;
            }
        }
        return allFields;
    }
}