android 解析xml

標籤：

android下使用DocumentBuilder 解析xml時，有不少坑，主要是遍曆子節點時要注意。

 

假設有如下xml檔案

<GuessStock><Release><VersionCode>2</VersionCode><VersionName>0.2</VersionName><Description>New version for test</Description><Url>http://guessstock.qiniudn.com/GuessStock.apk</Url><CheckSum/><Date>2014-09-21 17:33:00</Date></Release></GuessStock>

 

解析代碼如下：

            InputStream stream = new DefaultHttpClient()                    .execute(new HttpGet(url)).getEntity().getContent();            DocumentBuilder myDocBuilder = DocumentBuilderFactory.newInstance()                    .newDocumentBuilder();            Document myDoc = myDocBuilder.parse(new InputSource(stream));            Element root = myDoc.getDocumentElement();            NodeList releaseNode = root.getElementsByTagName("Release");            if (releaseNode.getLength() < 1) {                Log.v(TAG, "No release node found");                return;            }            for (int i = 0; i < nodeList.getLength(); i++) {                String name = "";                String value = "";                Node node = nodeList.item(i);                if ((node.getNodeName().equals("#text"))                        || (node.getChildNodes().getLength() > 3)                        || (node.getTextContent().trim().equals("") || node.getTextContent() == null)) {                    Log.w(TAG, "Invalid node.");                    continue;                }                name = node.getNodeName();                value = node.getTextContent();                if (name.equals("VersionCode")) {                    releaseInfo.versionCode = Integer.valueOf(value);                } else if (name.equals("VersionName")) {                    releaseInfo.versionName = value;                } else if (name.equals("Description")) {                    releaseInfo.whatsNew = value;                } else if (name.equals("Url")) {                    releaseInfo.url = value;                } else if (name.equals("CheckSum")) {                    releaseInfo.checkSum = value;                } else if (name.equals("Date")) {                    releaseInfo.date = value;                }            }

 

android 解析xml