高手请进，菜鸟别进！来者有分，有关jTree的问题！在线等待！急！

BenLadeng5225 2002-12-13 02:24:37
先看看代码，：
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import com.borland.dx.sql.dataset.*;
import com.borland.dbswing.*;
import javax.swing.tree.*;
///////////////////////////////////////////////////
public class main2Frame2 extends JFrame implements ActionListener{
private JPanel contentPane;
private BorderLayout borderLayout1 = new BorderLayout();
private JScrollPane jScrollPane1 = new JScrollPane();
private JTree jTree1;
private MenuBar menuBar1 = new MenuBar();
Menu menu1 = new Menu("文件");
MenuItem menuItem1 = new MenuItem("打开");
MenuItem menuItem2 = new MenuItem("保存");
MenuItem menuItem3 = new MenuItem("关闭");
Menu menu2 = new Menu("编辑");
MenuItem menuItem4 = new MenuItem("剪切");
MenuItem menuItem5 = new MenuItem("拷贝");
MenuItem menuItem6 = new MenuItem("粘贴");
Menu menu3 = new Menu("帮助");
MenuItem menuItem7 = new MenuItem("帮助");
MenuItem menuItem8= new MenuItem("关于我们");
private QueryDataSet queryDataSet1 = new QueryDataSet();
private TableScrollPane tableScrollPane1 = new TableScrollPane();
private JdbTable jdbTable1 = new JdbTable();
private Database database1 = new Database();
///////////////////////////////////////////////////////Construct the frame
public main2Frame2() {
enableEvents(AWTEvent.WINDOW_EVENT_MASK);
try {
jbInit();
}
catch(Exception e) {
e.printStackTrace();

}
}
//////////////////////////////////////////////////////////Component initialization

private void jbInit() throws Exception {
this.setMenuBar(menuBar1);
menuItem1.setShortcut(new MenuShortcut(79));
menuItem2.setShortcut(new MenuShortcut(83));
menuItem3.setShortcut(new MenuShortcut(65, true));
menuItem5.setShortcut(new MenuShortcut(67));
menuItem6.setShortcut(new MenuShortcut(86));
menuItem7.setShortcut(new MenuShortcut(90, true));
menuItem8.setShortcut(new MenuShortcut(84, true));
menuItem4.setShortcut(new MenuShortcut(88));
menuBar1.add(menu1);
menuBar1.add(menu2);
menuBar1.add(menu3);
menu1.add(menuItem1);
menu1.add(menuItem2);
menu1.add(menuItem3);
menu2.add(menuItem4);
menu2.add(menuItem5);
menu2.add(menuItem6);
menu3.add(menuItem7);
menu3.add(menuItem8);
//////////////////////////////////////////////////
DefaultMutableTreeNode root = new DefaultMutableTreeNode("中小学学生查询系统");
DefaultMutableTreeNode node1 = new DefaultMutableTreeNode("语文");
DefaultMutableTreeNode node2 = new DefaultMutableTreeNode("数学");
DefaultMutableTreeNode node3 = new DefaultMutableTreeNode("英语");
DefaultMutableTreeNode node4 = new DefaultMutableTreeNode("信息");
DefaultMutableTreeNode node5 = new DefaultMutableTreeNode("其他");
///////////////////////////////////////////////////
DefaultTreeModel treeModel = new DefaultTreeModel(root);
treeModel.insertNodeInto(node1, root, root.getChildCount());
treeModel.insertNodeInto(node2, root, root.getChildCount());
treeModel.insertNodeInto(node3, root, root.getChildCount());
treeModel.insertNodeInto(node4, root, root.getChildCount());
treeModel.insertNodeInto(node5, root, root.getChildCount());
//////////////////////////////////////////////////////////////
jTree1 = new JTree(treeModel);

//////////////////////////////////////
//setIconImage(Toolkit.getDefaultToolkit().createImage(main2Frame2.class.getResource("[Your Icon]")));
contentPane = (JPanel) this.getContentPane();
contentPane.setLayout(borderLayout1);
this.setSize(new Dimension(400, 300));
this.setTitle("中小学学生查询系统");
contentPane.add(jScrollPane1, BorderLayout.WEST);
contentPane.add(tableScrollPane1, BorderLayout.CENTER);
tableScrollPane1.getViewport().add(jdbTable1, null);
jScrollPane1.getViewport().add(jTree1, null);
///////////////////////////////////////
DefaultTreeCellRenderer cellRenderer = (DefaultTreeCellRenderer)jTree1.getCellRenderer();
cellRenderer.setLeafIcon(new ImageIcon("ip.gif"));
cellRenderer.setOpenIcon(new ImageIcon("text.gif"));
cellRenderer.setClosedIcon(new ImageIcon("ip.gif"));
///////////////////////////////////////
cellRenderer.setFont(new Font("宋体",Font.PLAIN,12));
cellRenderer.setBackgroundNonSelectionColor(Color.white);
cellRenderer.setBackgroundSelectionColor(Color.yellow);
cellRenderer.setBorderSelectionColor(Color.red);
cellRenderer.setTextNonSelectionColor(Color.black);
cellRenderer.setTextSelectionColor(Color.blue);
///////////////////////////////////////
jTree1.setEditable(false);
database1.setConnection(new com.borland.dx.sql.dataset.ConnectionDescriptor("jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=master", "sa", "", false, "com.microsoft.jdbc.sqlserver.SQLServerDriver"));
database1.setDatabaseName("");
queryDataSet1.setQuery(new com.borland.dx.sql.dataset.QueryDescriptor(database1, "SELECT * FROM sysobjects", null, true, Load.ALL));
jdbTable1.setDataSet(queryDataSet1);

/////////////////////////////////////////////

jTree1.addMouseListener(new MouseAdapter(){
public void mouseClicked(MouseEvent e){
TreePath tp=jTree1.getPathForLocation(e.getX(),e.getY());
if(tp.toString().equals("语文")){//点击语文时的响应
queryDataSet1.close();
queryDataSet1.setQuery(new com.borland.dx.sql.dataset.QueryDescriptor(database1, "select * from sysobjects", null, true, Load.ALL));
jdbTable1.setDataSet(queryDataSet1);
}
if(tp.toString().equals("数学")){//点击数学时的响应
queryDataSet1.close();
queryDataSet1.setQuery(new com.borland.dx.sql.dataset.QueryDescriptor(database1, "select * from sysaltfiles", null, true, Load.ALL));
jdbTable1.setDataSet(queryDataSet1);
}
if(tp.toString().equals("英语")){//点击英语时的响应
queryDataSet1.close();
queryDataSet1.setQuery(new com.borland.dx.sql.dataset.QueryDescriptor(database1, "select * from syscacheobjects", null, true, Load.ALL));
jdbTable1.setDataSet(queryDataSet1);
}
if(tp.toString().equals("信息")){//点击信息时的响应
queryDataSet1.close();
queryDataSet1.setQuery(new com.borland.dx.sql.dataset.QueryDescriptor(database1, "select * from syscharsets", null, true, Load.ALL));
jdbTable1.setDataSet(queryDataSet1);
} }
});
/////////////////////////////////////////////////////////
////////// //Overridden so we can exit when window is closed
protected void processWindowEvent(WindowEvent e) {
super.processWindowEvent(e);
if (e.getID() == WindowEvent.WINDOW_CLOSING) {
System.exit(0);
}
}
}
...全文
32 12 打赏 收藏 转发到动态 举报
写回复
用AI写文章
12 条回复
切换为时间正序
请发表友善的回复…
发表回复
haode 2002-12-16
  • 打赏
  • 举报
 回复
呵呵，抱歉抱歉

来晚了

PS：来了也不一定会做，惭愧惭愧
Iforgot 2002-12-14
  • 打赏
  • 举报
 回复
呵呵，都搞定了啊！ 实在不好意思。^_^
BenLadeng5225 2002-12-14
  • 打赏
  • 举报
 回复
清风鱼，呵呵，朋友一场，送50分给你！呵呵！保持联系！
BenLadeng5225 2002-12-14
  • 打赏
  • 举报
 回复
kk_wyx(桃花岛):谢谢你，问题解决，请到http://expert.csdn.net/Expert/topic/1258/1258979.xml?temp=6.797427E-02
领分，这150分都是你的。
kk_wyx 2002-12-13
  • 打赏
  • 举报
 回复
给分吧
kk_wyx 2002-12-13
  • 打赏
  • 举报
 回复
修改如下：

jTree1.addMouseListener(new MouseAdapter(){
public void mouseClicked(MouseEvent e){
TreePath tp=jTree1.getPathForLocation(e.getX(),e.getY());
String kk = tp.getLastPathComponent().toString();

if(kk.toString().equals("语文")){//点击语文时的响应
queryDataSet1.close();
queryDataSet1.setQuery(new com.borland.dx.sql.dataset.QueryDescriptor(database1, "select * from sysobjects", null, true, Load.ALL));
jdbTable1.setDataSet(queryDataSet1);
}
if(kk.toString().equals("数学")){//点击语文时的响应
queryDataSet1.close();
queryDataSet1.setQuery(new com.borland.dx.sql.dataset.QueryDescriptor(database1, "select * from sysaltfiles", null, true, Load.ALL));
jdbTable1.setDataSet(queryDataSet1);
}
if(kk.toString().equals("英语")){//点击语文时的响应
queryDataSet1.close();
queryDataSet1.setQuery(new com.borland.dx.sql.dataset.QueryDescriptor(database1, "select * from syscacheobjects", null, true, Load.ALL));
jdbTable1.setDataSet(queryDataSet1);
}
if(kk.toString().equals("信息")){//点击语文时的响应
queryDataSet1.close();
queryDataSet1.setQuery(new com.borland.dx.sql.dataset.QueryDescriptor(database1, "select * from syscharsets", null, true, Load.ALL));
jdbTable1.setDataSet(queryDataSet1);
} }
});
kk_wyx 2002-12-13
  • 打赏
  • 举报
 回复
你的代码有问题：按如下改即可

用到

TreePath tp=jTree1.getPathForLocation(e.getX(),e.getY());
String kk = tp.getLastPathComponent().toString();
之后有kk进行比较
study_body 2002-12-13
  • 打赏
  • 举报
 回复
没有用过，收藏
Iforgot 2002-12-13
  • 打赏
  • 举报
 回复
我回去看看，没用过JTree，还有就是最近一直加班，几乎没时间。^_^

不过，我会尽快回来给各答复的，能搞定或不能。 ^_^
BenLadeng5225 2002-12-13
  • 打赏
  • 举报
 回复
我的代码
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import com.borland.dx.sql.dataset.*;
import com.borland.dbswing.*;
import javax.swing.tree.*;
///////////////////////////////////////////////////
public class main2Frame2 extends JFrame implements ActionListener{
private JPanel contentPane;
private BorderLayout borderLayout1 = new BorderLayout();
private JScrollPane jScrollPane1 = new JScrollPane();
private JTree jTree1;
private MenuBar menuBar1 = new MenuBar();
Menu menu1 = new Menu("文件");
MenuItem menuItem1 = new MenuItem("打开");
MenuItem menuItem2 = new MenuItem("保存");
MenuItem menuItem3 = new MenuItem("关闭");
Menu menu2 = new Menu("编辑");
MenuItem menuItem4 = new MenuItem("剪切");
MenuItem menuItem5 = new MenuItem("拷贝");
MenuItem menuItem6 = new MenuItem("粘贴");
Menu menu3 = new Menu("帮助");
MenuItem menuItem7 = new MenuItem("帮助");
MenuItem menuItem8= new MenuItem("关于我们");
private QueryDataSet queryDataSet1 = new QueryDataSet();
private TableScrollPane tableScrollPane1 = new TableScrollPane();
private JdbTable jdbTable1 = new JdbTable();
private Database database1 = new Database();
///////////////////////////////////////////////////////Construct the frame
public main2Frame2() {
enableEvents(AWTEvent.WINDOW_EVENT_MASK);
try {
jbInit();
}
catch(Exception e) {
e.printStackTrace();

}
}
//////////////////////////////////////////////////////////Component initialization

private void jbInit() throws Exception {
this.setMenuBar(menuBar1);
menuItem1.setShortcut(new MenuShortcut(79));
menuItem2.setShortcut(new MenuShortcut(83));
menuItem3.setShortcut(new MenuShortcut(65, true));
menuItem5.setShortcut(new MenuShortcut(67));
menuItem6.setShortcut(new MenuShortcut(86));
menuItem7.setShortcut(new MenuShortcut(90, true));
menuItem8.setShortcut(new MenuShortcut(84, true));
menuItem4.setShortcut(new MenuShortcut(88));
menuBar1.add(menu1);
menuBar1.add(menu2);
menuBar1.add(menu3);
menu1.add(menuItem1);
menu1.add(menuItem2);
menu1.add(menuItem3);
menu2.add(menuItem4);
menu2.add(menuItem5);
menu2.add(menuItem6);
menu3.add(menuItem7);
menu3.add(menuItem8);


//////////////////////////////////////////////////
DefaultMutableTreeNode root = new DefaultMutableTreeNode("中小学学生查询系统");
DefaultMutableTreeNode node1 = new DefaultMutableTreeNode("语文");
DefaultMutableTreeNode node2 = new DefaultMutableTreeNode("数学");
DefaultMutableTreeNode node3 = new DefaultMutableTreeNode("英语");
DefaultMutableTreeNode node4 = new DefaultMutableTreeNode("信息");
DefaultMutableTreeNode node5 = new DefaultMutableTreeNode("其他");
///////////////////////////////////////////////////
DefaultTreeModel treeModel = new DefaultTreeModel(root);
treeModel.insertNodeInto(node1, root, root.getChildCount());
treeModel.insertNodeInto(node2, root, root.getChildCount());
treeModel.insertNodeInto(node3, root, root.getChildCount());
treeModel.insertNodeInto(node4, root, root.getChildCount());
treeModel.insertNodeInto(node5, root, root.getChildCount());
//////////////////////////////////////////////////////////////
jTree1 = new JTree(treeModel);

//////////////////////////////////////
//setIconImage(Toolkit.getDefaultToolkit().createImage(main2Frame2.class.getResource("[Your Icon]")));
contentPane = (JPanel) this.getContentPane();
contentPane.setLayout(borderLayout1);
this.setSize(new Dimension(400, 300));
this.setTitle("中小学学生查询系统");
contentPane.add(jScrollPane1, BorderLayout.WEST);
contentPane.add(tableScrollPane1, BorderLayout.CENTER);
tableScrollPane1.getViewport().add(jdbTable1, null);
jScrollPane1.getViewport().add(jTree1, null);
///////////////////////////////////////
DefaultTreeCellRenderer cellRenderer = (DefaultTreeCellRenderer)jTree1.getCellRenderer();
cellRenderer.setLeafIcon(new ImageIcon("ip.gif"));
cellRenderer.setOpenIcon(new ImageIcon("text.gif"));
cellRenderer.setClosedIcon(new ImageIcon("ip.gif"));
///////////////////////////////////////
cellRenderer.setFont(new Font("宋体",Font.PLAIN,12));
cellRenderer.setBackgroundNonSelectionColor(Color.white);
cellRenderer.setBackgroundSelectionColor(Color.yellow);
cellRenderer.setBorderSelectionColor(Color.red);
cellRenderer.setTextNonSelectionColor(Color.black);
cellRenderer.setTextSelectionColor(Color.blue);
///////////////////////////////////////
jTree1.setEditable(false);
database1.setConnection(new com.borland.dx.sql.dataset.ConnectionDescriptor("jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=master", "sa", "", false, "com.microsoft.jdbc.sqlserver.SQLServerDriver"));
database1.setDatabaseName("");
queryDataSet1.setQuery(new com.borland.dx.sql.dataset.QueryDescriptor(database1, "SELECT * FROM sysobjects", null, true, Load.ALL));
jdbTable1.setDataSet(queryDataSet1);
jTree1.addMouseListener(new MouseAdapter(){
public void mouseClicked(MouseEvent e){
TreePath tp=jTree1.getPathForLocation(e.getX(),e.getY());
if(tp.toString().equals("语文")){//点击语文时的响应
queryDataSet1.close();
queryDataSet1.setQuery(new com.borland.dx.sql.dataset.QueryDescriptor(database1, "select * from sysobjects", null, true, Load.ALL));
jdbTable1.setDataSet(queryDataSet1);
}
if(tp.toString().equals("数学")){//点击语文时的响应
queryDataSet1.close();
queryDataSet1.setQuery(new com.borland.dx.sql.dataset.QueryDescriptor(database1, "select * from sysaltfiles", null, true, Load.ALL));
jdbTable1.setDataSet(queryDataSet1);
}
if(tp.toString().equals("英语")){//点击语文时的响应
queryDataSet1.close();
queryDataSet1.setQuery(new com.borland.dx.sql.dataset.QueryDescriptor(database1, "select * from syscacheobjects", null, true, Load.ALL));
jdbTable1.setDataSet(queryDataSet1);
}
if(tp.toString().equals("信息")){//点击语文时的响应
queryDataSet1.close();
queryDataSet1.setQuery(new com.borland.dx.sql.dataset.QueryDescriptor(database1, "select * from syscharsets", null, true, Load.ALL));
jdbTable1.setDataSet(queryDataSet1);
} }
});
/////////////////////////////////////////////////
menuItem1.addActionListener(this);
menuItem2.addActionListener(this);
menuItem3.addActionListener(this);
menuItem4.addActionListener(this);
menuItem5.addActionListener(this);
menuItem6.addActionListener(this);
menuItem7.addActionListener(this);
menuItem8.addActionListener(this);
}
////////////////////////////////////////////
public void actionPerformed(ActionEvent e){
if(e.getSource()== menuItem1){}
if(e.getSource()== menuItem2){}
if(e.getSource()== menuItem3){}
if(e.getSource()== menuItem4){}
}
//Overridden so we can exit when window is closed
protected void processWindowEvent(WindowEvent e) {
super.processWindowEvent(e);
if (e.getID() == WindowEvent.WINDOW_CLOSING) {
System.exit(0);
}
}
}
BenLadeng5225 2002-12-13
  • 打赏
  • 举报
 回复
谁能解决这个问题，我在开贴送他200分！急啊！快呀！
BenLadeng5225 2002-12-13
  • 打赏
  • 举报
 回复
为什么我点击树接点时，右边窗口的数据库显示没有改变，我用的是jbuider 7,和
SQL server.怎样才能使TREE中的各接点产生mouseClicked事件响应。难道不是

TreePath tp=jTree1.getPathForLocation(e.getX(),e.getY());
if(tp.toString().equals("语文")){//点击语文时的响应
queryDataSet1.close();
queryDataSet1.setQuery(new com.borland.dx.sql.dataset.QueryDescriptor(database1, "select * from sysobjects", null, true, Load.ALL));
jdbTable1.setDataSet(queryDataSet1);
这样为什么不行？
如何使用JTree，JTree使用方法
JTree的使用 JTree的使用 JTree的使用
jtree
jtree中加checkbox，实用哦。
JTree的用法
JTree的用法
jTree和jTable 双向联动
实现jTable和jTree的双向联动，点击jTree会选中jTable单元格，点击jTable会选中jTree节点。
JTree(节点带有checkbox)代码实例
JTree(节点带有checkbox)代码实例
Java SE

62,614

社区成员

307,327

社区内容

发帖
与我相关
我的任务
社区描述
Java 2 Standard Edition
社区管理员
  • Java SE
加入社区
  • 近7日
  • 近30日
  • 至今

加载中

查看更多榜单
社区公告
暂无公告

试试用AI创作助手写篇文章吧

+ 用AI写文章