想在JTree与JTable之间实现Drag and Drop jfc里面jtree和jtable都不支持drag,要自己做中间的datasource和定义自己的drag source和Data Transfer Phase ,有难度 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 是不是要自己写Transfer Handler 看看是否有帮助?package aabbcc;import javax.swing.JTree;import java.awt.dnd.DragGestureListener;import java.awt.dnd.DragSourceListener;import java.awt.dnd.DragSourceDragEvent;import java.awt.dnd.DragSourceEvent;import java.awt.dnd.DragSourceDropEvent;import java.awt.dnd.DragGestureEvent;import java.awt.dnd.DragSource;import javax.swing.tree.DefaultMutableTreeNode;import java.awt.datatransfer.StringSelection;/** * <p>Title: JTree之间的拖拽中的DragSourceTree</p> * <p>Description:通过向从“源树”中拖拽结点在目标树中重新构造一棵树,实现JTree之间的拖拽单向拖拽,这个类是“源树”。 </p> * @author awaysrain(绝对零度) * @version 1.0 */public class DragSourceTree extends JTree implements DragGestureListener, DragSourceListener { private DragSource dragSource = null; /** * Construct the source tree */ public DragSourceTree() { super(); dragSource = DragSource.getDefaultDragSource(); dragSource.createDefaultDragGestureRecognizer(this, java.awt.dnd.DnDConstants. ACTION_COPY_OR_MOVE, this); } /** * Construct the source tree * @param treeNode DefaultMutableTreeNode */ public DragSourceTree(DefaultMutableTreeNode treeNode) { super(treeNode); dragSource = DragSource.getDefaultDragSource(); dragSource.createDefaultDragGestureRecognizer(this, java.awt.dnd.DnDConstants. ACTION_COPY_OR_MOVE, this); } /** * dragGestureRecognized * * @param dge DragGestureEvent */ public void dragGestureRecognized(DragGestureEvent dge) { java.awt.Cursor cursor = null; cursor = DragSource.DefaultCopyDrop; //set cursor java.awt.Point jap = dge.getDragOrigin(); //drag point int x = (int) jap.getX(); int y = (int) jap.getY(); javax.swing.tree.TreePath tp = this.getPathForLocation(x, y); //get drag node path if (tp != null) { DefaultMutableTreeNode node1 = (DefaultMutableTreeNode) tp.getLastPathComponent(); //get drag node serializableNode(node1); //Serializable node object } //event start dge.startDrag(cursor, new StringSelection("drag"), this); } /** * dragEnter * * @param dsde DragSourceDragEvent */ public void dragEnter(DragSourceDragEvent dsde) { } /** * dragOver * * @param dsde DragSourceDragEvent */ public void dragOver(DragSourceDragEvent dsde) { } /** * dropActionChanged * * @param dsde DragSourceDragEvent */ public void dropActionChanged(DragSourceDragEvent dsde) { } /** * dragDropEnd * * @param dsde DragSourceDropEvent */ public void dragDropEnd(DragSourceDropEvent dsde) { } /** * dragExit * * @param dse DragSourceEvent */ public void dragExit(DragSourceEvent dse) { } /** *Serializable node * * @param node DefaultMutableTreeNode */ private void serializableNode(DefaultMutableTreeNode node) { try { java.io.FileOutputStream objfile = new java.io.FileOutputStream( "DragNode.OBJ"); java.io.ObjectOutputStream p = new java.io.ObjectOutputStream(objfile); p.writeObject(node); p.flush(); objfile.close(); } catch (java.io.IOException e) { System.out.println(e.toString()); } }} DragTargetTree.java --------------------------------------------------------------------------------package aabbcc; import javax.swing.JTree;import java.awt.dnd.DropTargetListener;import java.awt.dnd.DropTargetDragEvent;import java.awt.dnd.DropTargetDropEvent;import java.awt.dnd.DropTargetEvent;import java.awt.dnd.DropTarget;import java.io.*;import java.io.*;import javax.swing.tree.DefaultMutableTreeNode;/** * <p>Title: JTree之间的拖拽中的DragTargetTree</p> * <p>Description:通过向从“源树”中拖拽结点在目标树中重新构造一棵树,实现JTree之间的拖拽单向拖拽,这个类是“目的树” </p> * @author awaysrain(绝对零度) * @version 1.0 */public class DragTargetTree extends JTree implements DropTargetListener { /** * Construct the target tree */ public DragTargetTree() { super(); DropTarget dropTarget = new DropTarget(this, java.awt.dnd.DnDConstants. ACTION_COPY_OR_MOVE, this); } /** * Construct the target tree * @param treeNode DefaultMutableTreeNode */ public DragTargetTree(DefaultMutableTreeNode treeNode) { super(treeNode); DropTarget dropTarget = new DropTarget(this, java.awt.dnd.DnDConstants. ACTION_COPY_OR_MOVE, this); } /** * dragEnter * * @param dtde DropTargetDragEvent */ public void dragEnter(DropTargetDragEvent dtde) { } /** * dragOver * * @param dtde DropTargetDragEvent */ public void dragOver(DropTargetDragEvent dtde) { } /** * dropActionChanged * * @param dtde DropTargetDragEvent */ public void dropActionChanged(DropTargetDragEvent dtde) { } /** * drop * * @param dtde DropTargetDropEvent */ public void drop(DropTargetDropEvent dtde) { dtde.acceptDrop(java.awt.dnd.DnDConstants.ACTION_COPY); //accept drop java.awt.Point ap = dtde.getLocation(); // get event point int x = (int) ap.getX(); int y = (int) ap.getY(); javax.swing.tree.DefaultMutableTreeNode parnode; javax.swing.tree.TreePath tp = this.getPathForLocation(x, y); if (tp != null) { try { //get drop tree node with treepath javax.swing.tree.DefaultMutableTreeNode no1 = (javax.swing.tree.DefaultMutableTreeNode) tp.getLastPathComponent(); parnode = no1; int index = parnode.getChildCount(); // get drop tree mode javax.swing.tree.DefaultTreeModel tm = (javax.swing.tree.DefaultTreeModel)this.getModel(); javax.swing.tree.DefaultMutableTreeNode node2 = new javax.swing.tree.DefaultMutableTreeNode(); node2 = readNode(); tm.insertNodeInto(node2, parnode, index); } catch (java.lang.Exception e) { System.out.println(e.toString()); } } } /** * dragExit * * @param dte DropTargetEvent */ public void dragExit(DropTargetEvent dte) { } /** * * read the node * @return DefaultMutableTreeNode */ private DefaultMutableTreeNode readNode() { FileInputStream objfile = null; try { objfile = new java.io.FileInputStream("DragNode.OBJ"); ObjectInputStream q = new ObjectInputStream(objfile); DefaultMutableTreeNode node = (DefaultMutableTreeNode) q.readObject(); return node; } catch (Exception ex) { return null; } }} Demo.java--------------------------------------------------------------------------------package aabbcc; import java.awt.*;import java.awt.event.*;import javax.swing.*;import com.borland.jbcl.layout.*;/** * <p>Title: JTree之间的拖拽测试</p> * <p>Description:通过向从“源树”中拖拽结点在目标树中重新构造一棵树,实现JTree之间的拖拽单向拖拽,这个类测试的类 </p> * @author awaysrain(绝对零度) */public class Demo extends JFrame { JPanel contentPane; JScrollPane jScrollPane1 = new JScrollPane(); XYLayout xYLayout1 = new XYLayout(); DragSourceTree jTree1 = new DragSourceTree(); JScrollPane jScrollPane2 = new JScrollPane(); DragTargetTree jTree2 = new DragTargetTree(); JLabel jLabel1 = new JLabel(); JLabel jLabel2 = new JLabel(); //Construct the frame public Demo () { enableEvents(AWTEvent.WINDOW_EVENT_MASK); try { jbInit(); } catch(Exception e) { e.printStackTrace(); } } //Component initialization private void jbInit() throws Exception { contentPane = (JPanel) this.getContentPane(); contentPane.setLayout(xYLayout1); this.setSize(new Dimension(400, 300)); this.setTitle("Demo"); jLabel1.setFont(new java.awt.Font("DialogInput", 0, 16)); jLabel1.setText("源树"); jLabel2.setEnabled(true); jLabel2.setFont(new java.awt.Font("DialogInput", 0, 16)); jLabel2.setDebugGraphicsOptions(0); jLabel2.setDoubleBuffered(false); jLabel2.setVerifyInputWhenFocusTarget(true); jLabel2.setDisplayedMnemonic('0'); jLabel2.setText("目标树"); jLabel2.setVerticalAlignment(javax.swing.SwingConstants.CENTER); jLabel2.setVerticalTextPosition(javax.swing.SwingConstants.CENTER); contentPane.add(jLabel1, new XYConstraints(35, 8, 139, 27)); contentPane.add(jLabel2, new XYConstraints(214, 10, 149, 20)); contentPane.add(jScrollPane2, new XYConstraints(211, 31, 159, 231)); contentPane.add(jScrollPane1, new XYConstraints(25, 31, 153, 230)); jScrollPane1.getViewport().add(jTree1, null); jScrollPane2.getViewport().add(jTree2, null); } //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); } }} 求代码 POJO是什么?听了很多年了,理解得不深刻 。 我发誓我会过的有声有色 Hibernate查询结果如何封装成一个自定义实体 异常问题 高手请进 mootools的函数问题 权限的问题 WebSphere里面不能使用setCharacterEncoding(java.lang.String)?请高手救命呀!!! <Context path="?" docBase="?" ....>搞不懂,望指点一二 关于EJB发布的问题 开发CMP,编译时出现问题,急需高手解决 是不是可以用EJB三种BEAN中的哪一种代替数据库连接池?
import java.awt.dnd.DragGestureListener;
import java.awt.dnd.DragSourceListener;
import java.awt.dnd.DragSourceDragEvent;
import java.awt.dnd.DragSourceEvent;
import java.awt.dnd.DragSourceDropEvent;
import java.awt.dnd.DragGestureEvent;
import java.awt.dnd.DragSource;
import javax.swing.tree.DefaultMutableTreeNode;
import java.awt.datatransfer.StringSelection;/**
* <p>Title: JTree之间的拖拽中的DragSourceTree</p>
* <p>Description:通过向从“源树”中拖拽结点在目标树中重新构造一棵树,实现JTree之间的拖拽单向拖拽,这个类是“源树”。 </p>
* @author awaysrain(绝对零度)
* @version 1.0
*/public class DragSourceTree
extends JTree
implements DragGestureListener, DragSourceListener {
private DragSource dragSource = null;
/**
* Construct the source tree
*/
public DragSourceTree() {
super();
dragSource = DragSource.getDefaultDragSource();
dragSource.createDefaultDragGestureRecognizer(this,
java.awt.dnd.DnDConstants.
ACTION_COPY_OR_MOVE, this);
}
/**
* Construct the source tree
* @param treeNode DefaultMutableTreeNode
*/
public DragSourceTree(DefaultMutableTreeNode treeNode) {
super(treeNode);
dragSource = DragSource.getDefaultDragSource();
dragSource.createDefaultDragGestureRecognizer(this,
java.awt.dnd.DnDConstants.
ACTION_COPY_OR_MOVE, this);
} /**
* dragGestureRecognized
*
* @param dge DragGestureEvent
*/
public void dragGestureRecognized(DragGestureEvent dge) {
java.awt.Cursor cursor = null;
cursor = DragSource.DefaultCopyDrop; //set cursor
java.awt.Point jap = dge.getDragOrigin(); //drag point
int x = (int) jap.getX();
int y = (int) jap.getY();
javax.swing.tree.TreePath tp = this.getPathForLocation(x, y); //get drag node path
if (tp != null) {
DefaultMutableTreeNode node1 = (DefaultMutableTreeNode)
tp.getLastPathComponent(); //get drag node
serializableNode(node1); //Serializable node object
}
//event start
dge.startDrag(cursor, new StringSelection("drag"), this); } /**
* dragEnter
*
* @param dsde DragSourceDragEvent
*/
public void dragEnter(DragSourceDragEvent dsde) {
} /**
* dragOver
*
* @param dsde DragSourceDragEvent
*/
public void dragOver(DragSourceDragEvent dsde) {
} /**
* dropActionChanged
*
* @param dsde DragSourceDragEvent
*/
public void dropActionChanged(DragSourceDragEvent dsde) {
} /**
* dragDropEnd
*
* @param dsde DragSourceDropEvent
*/
public void dragDropEnd(DragSourceDropEvent dsde) {
} /**
* dragExit
*
* @param dse DragSourceEvent
*/
public void dragExit(DragSourceEvent dse) {
}
/**
*Serializable node
*
* @param node DefaultMutableTreeNode
*/
private void serializableNode(DefaultMutableTreeNode node) {
try {
java.io.FileOutputStream objfile = new java.io.FileOutputStream(
"DragNode.OBJ");
java.io.ObjectOutputStream p = new java.io.ObjectOutputStream(objfile);
p.writeObject(node);
p.flush();
objfile.close();
}
catch (java.io.IOException e) {
System.out.println(e.toString());
} }
}
--------------------------------------------------------------------------------package aabbcc; import javax.swing.JTree;
import java.awt.dnd.DropTargetListener;
import java.awt.dnd.DropTargetDragEvent;
import java.awt.dnd.DropTargetDropEvent;
import java.awt.dnd.DropTargetEvent;
import java.awt.dnd.DropTarget;
import java.io.*;
import java.io.*;
import javax.swing.tree.DefaultMutableTreeNode;/**
* <p>Title: JTree之间的拖拽中的DragTargetTree</p>
* <p>Description:通过向从“源树”中拖拽结点在目标树中重新构造一棵树,实现JTree之间的拖拽单向拖拽,这个类是“目的树” </p>
* @author awaysrain(绝对零度)
* @version 1.0
*/public class DragTargetTree
extends JTree
implements DropTargetListener {
/**
* Construct the target tree
*/
public DragTargetTree() {
super();
DropTarget dropTarget = new DropTarget(this,
java.awt.dnd.DnDConstants.
ACTION_COPY_OR_MOVE, this);
}
/**
* Construct the target tree
* @param treeNode DefaultMutableTreeNode
*/
public DragTargetTree(DefaultMutableTreeNode treeNode) {
super(treeNode);
DropTarget dropTarget = new DropTarget(this,
java.awt.dnd.DnDConstants.
ACTION_COPY_OR_MOVE, this);
}
/**
* dragEnter
*
* @param dtde DropTargetDragEvent
*/
public void dragEnter(DropTargetDragEvent dtde) {
} /**
* dragOver
*
* @param dtde DropTargetDragEvent
*/
public void dragOver(DropTargetDragEvent dtde) {
} /**
* dropActionChanged
*
* @param dtde DropTargetDragEvent
*/
public void dropActionChanged(DropTargetDragEvent dtde) {
} /**
* drop
*
* @param dtde DropTargetDropEvent
*/
public void drop(DropTargetDropEvent dtde) {
dtde.acceptDrop(java.awt.dnd.DnDConstants.ACTION_COPY); //accept drop
java.awt.Point ap = dtde.getLocation(); // get event point
int x = (int) ap.getX();
int y = (int) ap.getY();
javax.swing.tree.DefaultMutableTreeNode parnode;
javax.swing.tree.TreePath tp = this.getPathForLocation(x, y);
if (tp != null) {
try {
//get drop tree node with treepath
javax.swing.tree.DefaultMutableTreeNode no1 =
(javax.swing.tree.DefaultMutableTreeNode) tp.getLastPathComponent();
parnode = no1;
int index = parnode.getChildCount();
// get drop tree mode
javax.swing.tree.DefaultTreeModel tm =
(javax.swing.tree.DefaultTreeModel)this.getModel();
javax.swing.tree.DefaultMutableTreeNode node2 =
new javax.swing.tree.DefaultMutableTreeNode();
node2 = readNode();
tm.insertNodeInto(node2, parnode, index);
}
catch (java.lang.Exception e) {
System.out.println(e.toString());
}
} } /**
* dragExit
*
* @param dte DropTargetEvent
*/
public void dragExit(DropTargetEvent dte) {
} /**
*
* read the node
* @return DefaultMutableTreeNode
*/
private DefaultMutableTreeNode readNode() { FileInputStream objfile = null;
try {
objfile = new java.io.FileInputStream("DragNode.OBJ");
ObjectInputStream q = new ObjectInputStream(objfile);
DefaultMutableTreeNode node = (DefaultMutableTreeNode) q.readObject();
return node;
}
catch (Exception ex) {
return null;
}
}
}
import java.awt.event.*;
import javax.swing.*;
import com.borland.jbcl.layout.*;/**
* <p>Title: JTree之间的拖拽测试</p>
* <p>Description:通过向从“源树”中拖拽结点在目标树中重新构造一棵树,实现JTree之间的拖拽单向拖拽,这个类测试的类 </p>
* @author awaysrain(绝对零度)
*/
public class Demo extends JFrame {
JPanel contentPane;
JScrollPane jScrollPane1 = new JScrollPane();
XYLayout xYLayout1 = new XYLayout();
DragSourceTree jTree1 = new DragSourceTree();
JScrollPane jScrollPane2 = new JScrollPane();
DragTargetTree jTree2 = new DragTargetTree();
JLabel jLabel1 = new JLabel();
JLabel jLabel2 = new JLabel(); //Construct the frame
public Demo () {
enableEvents(AWTEvent.WINDOW_EVENT_MASK);
try {
jbInit();
}
catch(Exception e) {
e.printStackTrace();
}
} //Component initialization
private void jbInit() throws Exception {
contentPane = (JPanel) this.getContentPane();
contentPane.setLayout(xYLayout1);
this.setSize(new Dimension(400, 300));
this.setTitle("Demo");
jLabel1.setFont(new java.awt.Font("DialogInput", 0, 16));
jLabel1.setText("源树");
jLabel2.setEnabled(true);
jLabel2.setFont(new java.awt.Font("DialogInput", 0, 16));
jLabel2.setDebugGraphicsOptions(0);
jLabel2.setDoubleBuffered(false);
jLabel2.setVerifyInputWhenFocusTarget(true);
jLabel2.setDisplayedMnemonic('0');
jLabel2.setText("目标树");
jLabel2.setVerticalAlignment(javax.swing.SwingConstants.CENTER);
jLabel2.setVerticalTextPosition(javax.swing.SwingConstants.CENTER);
contentPane.add(jLabel1, new XYConstraints(35, 8, 139, 27));
contentPane.add(jLabel2, new XYConstraints(214, 10, 149, 20));
contentPane.add(jScrollPane2, new XYConstraints(211, 31, 159, 231));
contentPane.add(jScrollPane1, new XYConstraints(25, 31, 153, 230));
jScrollPane1.getViewport().add(jTree1, null);
jScrollPane2.getViewport().add(jTree2, null);
} //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);
}
}
}