Android代码小记之Xml解析工具类

import java.io.ByteArrayInputStream;

import java.util.HashMap;

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;

import org.w3c.dom.Element;

import org.w3c.dom.Node;

import org.w3c.dom.NodeList;

import org.w3c.dom.Text;

public class XmlUtil {
@SuppressWarnings({ "unchecked", "rawtypes" })
public static HashMap UnPackageXml(String xmlStr) {
HashMap rst = new HashMap();
try {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
ByteArrayInputStream stream = new ByteArrayInputStream(xmlStr.getBytes("UTF-8"));
Document doc = builder.parse(stream);
Element root = doc.getDocumentElement();
NodeList children = root.getChildNodes();
getAllLeafNode(null, children, rst);
} catch (Exception e) {
e.printStackTrace();
rst = null;
}
// if (rst.isEmpty())
// rst = null;
return rst;

}

private static void getAllLeafNode(String parentNodeName, NodeList nodeList, HashMap<String, String> rst) {

for (int i = 0; i < nodeList.getLength(); i++) {
Node child = nodeList.item(i);

if (child.getNodeType() == Node.ELEMENT_NODE) {
Element childElement = (Element) child;
String name = childElement.getTagName().trim();
String pathName = name;
if (parentNodeName != null && !parentNodeName.equals("")) {
pathName = parentNodeName + "." + name;
}
pathName = getPathNodeNameFromList(rst, pathName, 0);
if (isLeaf(childElement)) {
Text textnode = (Text) childElement.getFirstChild();
if (textnode != null) {
String text = textnode.getData().trim();
if (text != null && !text.equals("")) {
rst.put(pathName, text);
}
}
} else {
NodeList childList = childElement.getChildNodes();
getAllLeafNode(pathName, childList, rst);
}
}
}
}

private static String getPathNodeNameFromList(HashMap<String, String> rst, String name, int count) {
if (rst.containsKey(name)) {
String nn = name;
if (nn.indexOf("[") > 0) {
nn = nn.substring(0, nn.indexOf("["));
}
nn = nn + "[" + count + "]";
return getPathNodeNameFromList(rst, nn, ++count);
} else {
return name;
}
}

private static boolean isLeaf(Element ele) {
if (ele.getChildNodes().getLength() == 0) {
return true;
}
if (ele.getChildNodes().getLength() == 1) {
Node child = ele.getChildNodes().item(0);
if (child.getNodeType() != Node.ELEMENT_NODE) {
return true;
}
}
return false;
}

// public static void main(String[] args) {
// String returnStr =
// "<?xml version=\"1.0\" encoding=\"UTF-8\"?><response><content_sid>B03RYWO6G3C12A933S970D8CPRK4OS</content_sid><music><sms_num>1065843601</sms_num><sms>Q01PX1M9ZURMTTZTelUydWZKdXl2aEczZkJMUkxwYWs3SDdJRzEtMnlKcTh6NHJCVWFUYXJLNjByVmZnWkVOYmNCLXJzUDBYUzAxRVZCZjl3a0FlLTlhUXE0dGtVSG5PMm0tU0RDMkwyVFBuamQtSmc9QEkxLjBAMTAwMQ==</sms>
 </music></response>";
// HashMap<?, ?> m = XmlUtil.UnPackageXml(returnStr);
// System.out.println(m.get("music.sms_num"));
// System.out.println(m.get("music.sms"));
// }

}