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Save Document object to XML file

/**
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* write to the .xml file
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* @param doc
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* @param encoding
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* @param file
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* @param tab
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*/
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public void write2xml(Document doc, String encoding, String file, int tab) {
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if (doc == null) {
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return;
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}
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StringBuffer sb = new StringBuffer();
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// head
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sb.append("<?xml version=\"1.0\" encoding=\"" + encoding + "\"?>\n");
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this.writeFormal(doc.getDocumentElement(), sb, tab);
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// save data from memory to the *.xml file
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FileOutputStream fos = null;
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BufferedOutputStream bos = null;
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try {
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fos = new FileOutputStream(file);
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bos = new BufferedOutputStream(fos);
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bos.write(sb.toString().getBytes(encoding));
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bos.close();
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fos.close();
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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try {
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if (bos != null) {
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bos.close();
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}
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if (fos != null) {
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fos.close();
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}
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} catch (IOException e1) {
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e1.printStackTrace();
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}
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} catch (IOException e) {
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e.printStackTrace();
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try {
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if (bos != null) {
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bos.close();
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}
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if (fos != null) {
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fos.close();
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}
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} catch (IOException e1) {
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e1.printStackTrace();
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}
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}
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}
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/** private function */
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private void writeFormal(Element e, StringBuffer sb, int intTab) {
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org.w3c.dom.NodeList list = e.getElementsByTagName("*");
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// if e has not child
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if (list != null) {
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// blank
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for (int i=0; i<intTab; i++) {
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sb.append("\t");
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}
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// node name
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sb.append("<" + e.getNodeName() + ">\n");
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// node value
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if (list.getLength() == 0) {
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String value = e.getFirstChild().getNodeValue().trim();
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if (value.length() > 0) {
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// blank
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for (int i=0; i<intTab; i++) {
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sb.append("\t");
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}
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sb.append("\t" + value + "\n");
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}
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}
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else {
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org.w3c.dom.Node node;
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Element eChild;
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// write the child
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org.w3c.dom.NodeList listChild = e.getChildNodes();
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for (int i=0; i<list.getLength(); i++) {
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node = list.item(i);
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// check if "node" is the close child
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boolean bBeChild = false;
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for (int k=0; k<listChild.getLength(); k++) {
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if (listChild.item(k).equals(node)) {
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bBeChild = true;
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break;
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}
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}
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// if "node" is the close child
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if (bBeChild == true) {
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eChild = (Element) node;
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this.writeFormal(eChild, sb, intTab+1);
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} // if (bBeChild == true)
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} // for (int i=0; i<list.getLength(); i++)
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}
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// blank
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for (int i=0; i<intTab; i++) {
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sb.append("\t");
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}
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// end of node name
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sb.append("</" + e.getNodeName() + ">\n");
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} // if (list != null)
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}

posted on 2007-12-30 20:04 johnsdilon 閱讀(284) 評論(0) 編輯收藏

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