pull解析xml文件,和sax和dom一样 都可以脱离android单独使用,pull和sax的原理一样,不一样的地方是pull读取xml文件后调用方法返回的是数字,
读取到xml的声明返回数字0 START_DOCUMENT;
读取到xml的结束返回数字1 END_DOCUMENT ;
读取到xml的开始标签返回数字2 START_TAG
读取到xml的结束标签返回数字3 END_TAG
读取到xml的文本返回数字4 TEXT
pull是开源的项目 源码下载地址http://www.php.cn/
被解析的xml文档和android dom 解析xml方式 中的xml文档一样,命名为pullTest.xml.
private String pullParseXml(InputStream inputStream) { String result = ""; //解析全部的xml boolean isParse = true; try { // 创建一个xmlPullParser的工厂 XmlPullParserFactory factory = XmlPullParserFactory.newInstance(); // 获取一个解析实例 XmlPullParser parse = factory.newPullParser(); // 设置输入流的编码格式 parse.setInput(inputStream, "UTF-8"); // 当前事件的类型 int eventType = parse.getEventType(); while (XmlPullParser.END_DOCUMENT != eventType) { // 当前节点的名称 String nodeName = parse.getName(); switch (eventType) { case XmlPullParser.START_TAG: if ("group".equals(nodeName)) { // 解析<group>节点中的属性值,getAttributeCount()获取属性的个数 for (int i = 0; i < parse.getAttributeCount(); i++) { // 属性名称 String groupName = parse.getAttributeName(i); // 属性名称对应的值 String nameValue = parse.getAttributeValue(i); result = result + groupName + " = " + nameValue; } result += "\n"; } else if ("person".equals(nodeName)) { String personName = parse.getAttributeValue(0); String age = parse.getAttributeValue(1); result = result + "personName = " + personName + "age =" + age + "\n"; } else if ("chinese".equals(nodeName)) { //节点对应的文本 String chinese = parse.nextText(); Pattern p = Pattern.compile("\\s*|\t|\r|\n"); Matcher m = p.matcher(chinese); chinese = m.replaceAll(""); result = result + "chinese = " + chinese; } else if ("english".equals(nodeName)) { String english = parse.nextText(); Pattern p = Pattern.compile("\\s*|\t|\r|\n"); Matcher m = p.matcher(english); english = m.replaceAll(""); result = result + "english = " + english + "\n"; } break; case XmlPullParser.END_TAG: //在解析到一个group节点完成时,退出解析xml文件 // if("group".equals(nodeName)){ // eventType = XmlPullParser.END_DOCUMENT; // isParse = false; // } break; default: break; } //整个xml文件全部解析 if(isParse){ eventType = parse.next(); } } } catch (XmlPullParserException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return result; }
pull和sax不同最主要的体现在pull可以由客户随时终止解析xml.sax解析,只能从文档头一直读到尾,中间不能停止也不能对文件进行修改。直到解析完了整个文档才会返回。
//在解析到一个group节点完成时,退出解析xml文件 // if("group".equals(nodeName)){ // eventType = XmlPullParser.END_DOCUMENT; // isParse = false; // }
只要满足退出解析的条件,只需要设置如下代码即可。
eventType = XmlPullParser.END_DOCUMENT;
pull解析方式用到的方法,大部分我都在代码中注释了。
以上就是android pull 解析xml方式 的内容,更多相关内容请关注PHP中文网(www.php.cn)!

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