如何在 XML Pull Parser 中获取特定节点值答案

【问题标题】：How to get a specific node value in XML Pull Parser如何在 XML Pull Parser 中获取特定节点值
【发布时间】：2015-06-08 05:50:35
【问题描述】：

我正在使用以下代码来解析XML，它已经从官方Android Docs中引用：

XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
factory.setNamespaceAware(true);
XmlPullParser xpp = factory.newPullParser();

xpp.setInput(new StringReader(response));
int eventType = xpp.getEventType();
while (eventType != XmlPullParser.END_DOCUMENT) {
    if (eventType == XmlPullParser.START_DOCUMENT) {
        System.out.println("Start document");
    } else if (eventType == XmlPullParser.START_TAG) {
        System.out.println("Start tag " + xpp.getName());
    } else if (eventType == XmlPullParser.END_TAG) {
        System.out.println("End tag " + xpp.getName());
    } else if (eventType == XmlPullParser.TEXT) {
    //    System.out.println("Text " + xpp.getText());



    }
    eventType = xpp.next();
}
System.out.println("End document");

在控制台上：

06-08 11:13:25.557  24857-24883/ex.com.receipts I/System.out﹕ Start document
06-08 11:13:25.557  24857-24883/ex.com.receipts I/System.out﹕ Start tag exareceipts
06-08 11:13:25.557  24857-24883/ex.com.receipts I/System.out﹕ Start tag email
06-08 11:13:25.557  24857-24883/ex.com.receipts I/System.out﹕ End tag email
06-08 11:13:25.557  24857-24883/ex.com.receipts I/System.out﹕ Start tag authentication_status
06-08 11:13:25.557  24857-24883/ex.com.receipts I/System.out﹕ End tag authentication_status
06-08 11:13:25.557  24857-24883/ex.com.receipts I/System.out﹕ End tag exareceipts
06-08 11:13:25.557  24857-24883/ex.com.receipts I/System.out﹕ End document

但是我只对名称为 authentication_status 的节点感兴趣，我知道我需要检查：

if(xpp.getName().equalsIgnoreCase("authentication_status")){
    //logic for getting node value
}

我真的很困惑和不确定 - 将这段代码放在哪里。

【问题讨论】：

请对不赞成票发表评论？
^ ass，这是一个基于 DOM 的问题。

标签： java android xml xmlpullparser android-xmlpullparser

【解决方案1】：

好的，方法如下：

 XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
                            factory.setNamespaceAware(true);
                            XmlPullParser xpp = factory.newPullParser();

                            String tagName = null;

                            xpp.setInput(new StringReader(response));
                            int eventType = xpp.getEventType();
                            while (eventType != XmlPullParser.END_DOCUMENT) {
                                if (eventType == XmlPullParser.START_DOCUMENT) {
                                    System.out.println("Start document");
                                } else if (eventType == XmlPullParser.START_TAG) {
                                    System.out.println("Start tag " + xpp.getName());
                                    tagName =  xpp.getName();
                                } else if (eventType == XmlPullParser.END_TAG) {
                                    System.out.println("End tag " + xpp.getName());
                                } else if (eventType == XmlPullParser.TEXT) {

                                    if(tagName.equalsIgnoreCase("authentication_status")){
                                        System.out.println("Text tagName " + xpp.getText());
                                    }




                                }
                                eventType = xpp.next();
                            }
                            System.out.println("End document");

【讨论】：