xml解析

方法一：

String s\_xml1 = "<xml>" +
    "<head>lalalalal</head>" +
    "<body>1234</body>" +
    "</xml>";

try {
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = documentBuilderFactory.newDocumentBuilder();
Document document = builder.parse(new InputSource(new StringReader(s\_xml1)));
Element element = document.getDocumentElement();
NodeList childNodes = element.getChildNodes();
if (childNodes != null) {
    for (int i = 0; i < childNodes.getLength(); i++) {
        Node item = childNodes.item(i);
        String name = item.getNodeName();
        String nodeValue = item.getNodeValue();
        String textContent = item.getTextContent();
        Log.i("xx-----", name + "---" + nodeValue + "---" + textContent);
    }
}
} catch (Exception e) {
e.printStackTrace();
}

方法二：

public void s() {
    //创建一个DocumentBuilderFactory的对象
    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    //创建一个DocumentBuilder的对象
    String xmlStr = "<?xml version=\\"1.0\\" encoding=\\"utf-8\\"?><html><head><title METANAME=\\"MobilePayPlatform\\" CONTENT=\\"amount=1,amt\_type=RMB,mer\_date=20180619,mer\_id=69002429,mer\_priv=7242A100005259,order\_id=707794189,platDate=20180619,ret\_code=00200014,ret\_msg=支付结果不明，请稍后调用订单查询接口获取订单状态！,sign\_type=RSA,trade\_state=TRADE\_FAIL,version=4.0,sign=rZhSnK+5zMzEoeKAODq0liT0BdPjqjkSKJTHrGzuHJLPJ3gsrS8qh06C5ZM0qHOG8FGmTlPq22VBAgPDMSsM8zvKTTKGDlwbSBzAZ8U1xMsewo+/w6tRHWlT39rKo1CreIKZ1OSDtiyTPy+DKnGey6AEohB3Y52zPROTiBH5nz8=\\"/></head><body></body></html>";

    StringReader sr = new StringReader(xmlStr);
    InputSource is = new InputSource(sr);

    HashMap<String, String> hashMap = new HashMap<String, String>();
    try {
        //创建DocumentBuilder对象
        DocumentBuilder db = dbf.newDocumentBuilder();
        //通过DocumentBuilder对象的parser方法加载books.xml文件到当前项目下
        Document document = db.parse(is);
        //获取所有book节点的集合
        NodeList bookList = document.getElementsByTagName("title");
        //通过nodelist的getLength()方法可以获取bookList的长度
  System.out.println("一共有" + bookList.getLength() + "个title节点");

        for (int i = 0; i < bookList.getLength(); i++) {
            Node book = bookList.item(i);

            NamedNodeMap attrs = book.getAttributes();
System.out.println("第 " + (i + 1) + "个title节点共有" + attrs.getLength() + "个属性");

            for (int j = 0; j < attrs.getLength(); j++) {
                //通过item(index)方法获取book节点的某一个属性
                Node attr = attrs.item(j);

                if (attr.getNodeName().equals("CONTENT")) {

                    String name = attr.getNodeName();
                    String value = attr.getNodeValue();
                    //获取属性名
//                  System.out.print("属性名：" + name);
                    //获取属性值
//               System.out.println("--属性值: " + value);

                    String\[\] splitValue = value.split(",");

                    for (int k = 0; k < splitValue.length; k++) {

                        String resultValue = splitValue\[k\];

                        String\[\] splitResult = resultValue.split("=");

                        hashMap.put(splitResult\[0\], splitResult\[1\]);

                    }
                }
            }

        }
        for (String key : hashMap.keySet()) {
            System.out.println("key= " + key + " and value= " + hashMap.get(key));
        }

    } catch (Exception e) {
        e.printStackTrace();
    }
}

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