java查询数据库列名，输出需要编写的代码

    /**
     * 此方法是按照查询的结果集分离表名，所以是按顺序显示的
     * @param tableName  数据库表名字
     * @author txf
     */
    public void getAllUsers( String tableName){
        Connection conn = DbConnection.getConn();
        String sql="select * from  "+tableName+" where rownum=1 ";
        PreparedStatement stmt=null;
        ResultSet rs=null;
        String name="";
        try {
                stmt=conn.prepareStatement(sql);
                rs=stmt.executeQuery();
               ResultSetMetaData rsmd = rs.getMetaData() ;
               for (int i=1;i<=rsmd.getColumnCount() ;i++){
                 name=rsmd.getColumnName(i);
                    //if(s.get("memo")==null)pstmt.setString(13, ""); else pstmt.setString(13, s.get("memo").toString());
                 System.out.println("if(s.get(\""+name.toLowerCase()+"\")==null) pstmt.setString("+i+", \"\");else pstmt.setString("+i+", s.get(\""+name.toLowerCase()+"\").toString());");
                 //System.out.print(name+",");
                 //System.out.print("?,");
               }
        } catch (SQLException e) {
            e.printStackTrace();
        } finally{
            DbConnection.close(rs, null, stmt, conn);
        }
        
    }