mysql数据库模式信息提取

此程序实现将mysql数据库的模式信息展示出来。下面我简要地说明一下。
1.树形结构的实现。
 SimplePanel pl=new SimplePanel();
private void buildFrameLayout(){
try{ pane = getContentPane();
//关闭面板
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//BorderLayout布局管理器
JPanel panel = new JPanel();
final JScrollPane scrollPane = new JScrollPane();
//panel.setBounds(24, 10, 173, 317);
panel.add(scrollPane);
//初始化根节点
DefaultMutableTreeNode root=new DefaultMutableTreeNode(connection.getCatalog());
//获得表名
Vector<Object> vector = getTableNames();
DefaultMutableTreeNode menu_accp = null;

for(int i = 0; i < vector.size(); i++){
String strName = (String)vector.get(i);
//初始化枝节点
menu_accp = new DefaultMutableTreeNode(strName);
Vector<Object> vectorColumn = getColumnNames(strName);
DefaultMutableTreeNode menu_accp_son = null;
//添加枝节点数据
root.add(menu_accp);
for(int j = 0; j < vectorColumn.size(); j++){
//初始化叶子节点
menu_accp_son = new DefaultMutableTreeNode((String)vectorColumn.get(j));
//添加叶子节点数据
menu_accp.add(menu_accp_son);
}

}
tree = new JTree(root);
TreeSelectionModel model = tree.getSelectionModel();
//一次只能选择一个树节点
model.setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
//显示树
scrollPane.setViewportView(tree);
pane.add(panel,BorderLayout.WEST);
//注册点击节点事件
tree.addTreeSelectionListener(new TreeSelectionListener() {
public void valueChanged(TreeSelectionEvent e) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) tree
.getLastSelectedPathComponent();
// 可选用户对象
Object nodeInfo = node.getUserObject();
if (node.getLevel()==0) {
//根节点不处理
} else if (node.getLevel()==1){
//枝节点
pl.getPanel(connection, nodeInfo.toString(),node.getParent().toString(),node.getLevel());