uploadpanel.java

该系统是一个基于p2p的即时聊天系统

     * 对文件或者目录重新命名
     *
     * @param name 新的名称
     */
    public void rename(String name) {
        DefaultMutableTreeNode node = getSelectedNode();
        if (node != FILE_ROOT) {
            ZipEntry entry = (ZipEntry) node.getUserObject();
            toolkit.rename(entry, name);
            boolean isDir = entry.isDirectory();
            String parentName = "";
            node = (DefaultMutableTreeNode) node.getParent();
            if (node != FILE_ROOT) {
                parentName = ((ZipEntry) node.getUserObject()).getName();
            }
            reloadEntries();
            node = getNode(parentName);
            fileSystemTree.expandPath(new TreePath(node.getPath()));
            for (int i = 0; i < node.getChildCount(); i++) {
                DefaultMutableTreeNode child = (DefaultMutableTreeNode) node
                    .getChildAt(i);
                ZipEntry entry2 = (ZipEntry) child.getUserObject();
                if (entry2.isDirectory() == isDir) {
                    String name2 = toolkit.getShortName(entry2);
                    if (name2.equals(name) == true) {
                        fileSystemTree
                            .setSelectionPath(new TreePath(child.getPath()));
                        break;
                    }
                }
            }
        }
    }
    /**
     * 从选中的节点中提取文件到指定的目录下
     *
     * @param dir 指定的目录
     */
    public void extractFile(File dir) {
        DefaultMutableTreeNode node = getSelectedNode();
        if (node == FILE_ROOT) {
            toolkit.extractFile(dir, toolkit.getEntries().toArray(), null);
        } else {
            ZipEntry entry = (ZipEntry) node.getUserObject();
            if (entry.isDirectory()) {
                List entries = new ArrayList();
                for (int i = 0; i < toolkit.getEntries().size(); i++) {
                    ZipEntry entry2 = (ZipEntry) toolkit.getEntries().get(i);
                    if (entry2.getName().startsWith(entry.getName())) {
                        entries.add(entry2);
                    }
                }
                String name = toolkit.getShortName(entry) + DELIMITER;
                String omit = entry.getName();
                omit = omit.substring(0, omit.length() - name.length());
                toolkit.extractFile(dir, entries.toArray(), omit);
            } else {
                String name = toolkit.getShortName(entry);
                String omit = entry.getName();
                omit = omit.substring(0, omit.length() - name.length());
                toolkit.extractFile(dir, new Object[] {entry}, omit);
            }
        }
        extractFile(null, null);
    }
    /**
     * 提取指定的文件到指定的目录下
     *
     * @param file 指定文件的文件名
     * @param dir 指定的目录
     */
    public void extractFile(String file, File dir) {
        ZipEntry entry = null;
        List entries = toolkit.getEntries();
        for (int i = 0; i < entries.size(); i++) {
            entry = (ZipEntry) entries.get(i);
            if (entry.getName().equals(file)) {
                break;
            } else {
                entry = null;
            }
        }
        if (entry != null) {
            String shortName = toolkit.getShortName(entry);
            String omit = entry.getName();
            omit = omit.substring(0, omit.length() - shortName.length());
            toolkit.extractFile(dir, new Object[] {entry}, omit);
        }
    }
    /**
     * 刷新
     */
    public void refresh() {
        String file = getSelectedFile();
        if (file != null && file.endsWith(DELIMITER) == false) {
            SetShareAction.getInstance().setEnabled(true);
        } else {
            SetShareAction.getInstance().setEnabled(false);
        }
        handlerUserViewPanel();
    }
    /*------------------------------------------------------------------------*
     *                                私有方法                                *
     *------------------------------------------------------------------------*/
    /**
     * 处理用户视图
     */
    private void handlerUserViewPanel() {
        if (ViewPanel.getInstance().getUserID().length() > 0
            && getSelectedFile() != null) {
            unloadUsers();
            try {
                XmlRpc.setDriver("org.apache.xerces.parsers.SAXParser");
                XmlRpcClient client = new XmlRpcClient(genURL());
                String response = client.execute(genRequest()).toString();
                SAXBuilder builder = new SAXBuilder();
                StringReader reader = new StringReader(response);
                Document document = builder.build(reader);
                Element root = document.getRootElement();
                List friends = root.getChild("Friends").getChildren();
                for (int i = 0; i < friends.size(); i++) {
                    Element friend = (Element) friends.get(i);
                    String id = friend.getAttributeValue("id");
                    DefaultMutableTreeNode n = new DefaultMutableTreeNode(id);
                    userSystemModel.insertNodeInto(
                        n, USER_ROOT, USER_ROOT.getChildCount());
                }
                userSystemTree.setSelectionRow(0);
                userSystemTree.expandRow(0);
            } catch (ClassNotFoundException e) {
                JOptionPane.showMessageDialog(Smart.getInstance(),
                    "系统找不到类库“org.apache.xerces.parsers.SAXParser”！",
                    StringShop.HINT_TITLE, JOptionPane.INFORMATION_MESSAGE);
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (XmlRpcException e) {
                e.printStackTrace();
            } catch (IOException e) {
                JOptionPane.showMessageDialog(Smart.getInstance(),
                    "文件服务已关闭，请稍候再试！", StringShop.HINT_TITLE,
                    JOptionPane.INFORMATION_MESSAGE);
            } catch (JDOMException e) {
                JOptionPane.showMessageDialog(Smart.getInstance(),
                    "操作失败，请稍候再试！", StringShop.HINT_TITLE,
                    JOptionPane.INFORMATION_MESSAGE);
            }
        }
    }
    /**
     * 生成请求URL
     *
     * @return 生成的请求URL
     */
    private String genURL() {
        StringBuffer url = new StringBuffer();
        url.append("http://");
        url.append(XMLConfig.getServicesIP());
        url.append(":");
        url.append(XMLConfig.getFilePort());
        url.append(DELIMITER);
        return url.toString();
    }
    /**
     * 生成XML-RPC请求消息
     *
     * @return 生成的XML-RPC请求消息
     */
    private XmlRpcRequest genRequest() {
        //请求方法
        StringBuffer method = new StringBuffer();
        method.append(XMLConfig.getFileClass());
        method.append(".");
        method.append(XMLConfig.getFileMethod());
        //请求参数
        Vector params = new Vector();
        XMLOutputter outputter = new XMLOutputter();
        params.addElement(outputter.outputString(genDocument()));
        return new XmlRpcRequest(method.toString(), params);
    }
    /**
     * 生成XML文档
     *
     * @return 生成的XML文档
     */
    private Document genDocument() {
        Element request = new Element("Request");
        Element share = new Element("Share");
        request.addContent(share);
        share.setAttribute("id", ViewPanel.getInstance().getUserID());
        share.setAttribute("file", getSelectedFile());
        return new Document(request);
    }
    /**
     * 设置树型组件的附加选项
     *
     * @param tree 待设置的树型组件
     */
    private void setTree(JTree tree) {
        DefaultTreeSelectionModel model = new DefaultTreeSelectionModel();
        model.setSelectionMode(model.SINGLE_TREE_SELECTION);
        tree.setSelectionModel(model);
        tree.setSelectionRow(0);
        tree.expandRow(0);
    }
    /**
     * 在文件系统树上查找具有实体名称的节点
     *
     * @param text 指定的实体名称
     * @return 文件系统树上查找具有实体名称的节点
     */
    private DefaultMutableTreeNode getNode(String text) {
        DefaultMutableTreeNode parent = FILE_ROOT;
        StringTokenizer st = new StringTokenizer(text, DELIMITER);
        if (st.hasMoreTokens() == true) {
            StringBuffer sb = new StringBuffer();
            while (st.hasMoreTokens()) {
                sb.append(st.nextToken());
                sb.append(DELIMITER);
                for (int j = 0; j < parent.getChildCount(); j++) {
                    DefaultMutableTreeNode parent2 =
                        (DefaultMutableTreeNode) parent.getChildAt(j);
                    ZipEntry entry = (ZipEntry) parent2.getUserObject();
                    if (sb.toString().equals(entry.getName())) {
                        parent = parent2;
                        break;
                    }
                }
            }
        }
        return parent;
    }
    /**
     * 装载实体
     */
    private void loadEntries() {
        toolkit.openFile(new File(XMLConfig.getUploadFile()));
        List entries = toolkit.getEntries();
        for (int i = 0; i < entries.size(); i++) {
            ZipEntry entry = (ZipEntry) entries.get(i);
            DefaultMutableTreeNode child = new DefaultMutableTreeNode(entry);
            String name = entry.getName();
            String parentName = name;
            if (entry.isDirectory() == true) {
                name = name.substring(0, name.length() - 1);
                int index = name.lastIndexOf(DELIMITER);
                if (index != -1) {
                    parentName = name.substring(0, index + 1);
                }
            } else {
                int index = name.lastIndexOf(DELIMITER);
                if (index != -1) {
                    parentName = name.substring(0, index + 1);
                }
            }
            DefaultMutableTreeNode parent = getNode(parentName);
            boolean inserted = false;
            for (int j = 0; j < parent.getChildCount(); j++) {
                DefaultMutableTreeNode sibling =
                    (DefaultMutableTreeNode) parent.getChildAt(j);
                ZipEntry entry2 = (ZipEntry) sibling.getUserObject();
                if (toolkit.compare(entry, entry2) < 0) {
                    fileSystemModel.insertNodeInto(child, parent, j);
                    inserted = true;
                    break;
                }
            }
            if (inserted == false) {
                fileSystemModel.insertNodeInto(
                    child, parent, parent.getChildCount());
            }
        }
        fileSystemTree.expandRow(0);
    }
    /**
     * 卸载实体
     */
    private void unloadEntries() {
        int count = FILE_ROOT.getChildCount();
        for (int i = 0; i < count; i++) {
            fileSystemModel.removeNodeFromParent(
                (DefaultMutableTreeNode) FILE_ROOT.getChildAt(0));
        }
    }
    /**
     * 重载实体