1.sax方式

/** * 使用sax解析 */public class SaxParse{    /**     * sax解析器     */    private SAXParser parser;        public SaxParse(){        try {            SAXParserFactory f = SAXParserFactory.newInstance();            parser = f.newSAXParser();        } catch (ParserConfigurationException e) {            e.printStackTrace();        } catch (Exception e) {            e.printStackTrace();        }    }    public List
     
       doParse(InputStream is) {        try {            XmlHandler h = new XmlHandler();            parser.parse(is,h);            return h.getpersons();        } catch (Exception e) {            e.printStackTrace();        }        return null;    }        /**     * 处理器     */    class XmlHandler extends DefaultHandler{        List
      
        persons = null ;        Person person = null ;                //当前元素名称        private String currEleName;                /**         * 文本节点触发该方法         */        public void characters(char[] ch, int start, int length)throws SAXException {            String str = new String(ch,start,length);            //name            if("name".equals(currEleName)){                person.name = str ;            }            else if("age".equals(currEleName)){                person.age = Integer.parseInt(str);            }        }        public void endDocument() throws SAXException {        }        /**         * 元素结束         */        public void endElement(String uri, String localName, String qName)                throws SAXException {            if("person".equals(localName)){                persons.add(person);            }            //将当前元素置空            else if(("name".equals(currEleName)) || ("age".equals(currEleName))){                this.currEleName = "" ;            }        }        /**         * 文档开始事件         */        public void startDocument() throws SAXException {            persons = new ArrayList
       
        ();        }        /**         * 元素开始事件         * localName:本地名         * uri:名字空间         * qName:限定名,前缀 + 本地名         */        public void startElement(String uri, String localName, String qName,                Attributes attributes) throws SAXException {            //实例化person对象            if("person".equals(localName)){                person = new Person();                person.id = Integer.parseInt(attributes.getValue(0));            }            //name元素            else if("name".equals(localName)){                this.currEleName = "name" ;            }            //name元素            else if("age".equals(localName)){                this.currEleName = "age" ;            }        }                public List
        
          getpersons(){            return persons ;        }    }}
        
       
      
     

2.dom方式

/** * DOM解析 */public class DomParse{    //    private DocumentBuilder builder;        public DomParse(){        try {            DocumentBuilderFactory f = DocumentBuilderFactory.newInstance();            this.builder = f.newDocumentBuilder();        } catch (Exception e) {            e.printStackTrace();        }    }        public List
     
       doParse(InputStream is) {        List
      
        persons = new ArrayList
       
        ();        Person person = null ;        try {            Document doc = builder.parse(is);            NodeList list = doc.getElementsByTagName("person");            Element ele = null ;            for(int i = 0 ; i < list.getLength() ; i ++){                ele = (Element) list.item(i);                person = new Person();                person.id = Integer.parseInt(ele.getAttribute("id"));                person.name = getSubElementTextContent(ele,"name");                person.age = Integer.parseInt(getSubElementTextContent(ele,"age"));                persons.add(person);            }        } catch (Exception e) {            e.printStackTrace();        }        return persons;    }    /**     * 得到指定的资源中中间的文本内容     */    private String getSubElementTextContent(Element ele, String tagName) {        NodeList list = ele.getElementsByTagName(tagName);        Element e = (Element) list.item(0);        //得到中间的文本节点        return e.getTextContent();    }}
       
      
     

3.pull方式

/** * pull解析,拉模式,可以手动控制下一个事件是否触发. */public class PullParse{    public List
     
       doParse(InputStream is) {        List
      
        persons = null ;        Person person = null ;        try {            XmlPullParser parser = Xml.newPullParser();            //设置解析数据源            parser.setInput(is, "utf-8");            //取得事件的类型            int eventType = parser.getEventType();            String eleName = null ;            while(eventType != XmlPullParser.END_DOCUMENT){                switch(eventType){                    //文档开始                    case XmlPullParser.START_DOCUMENT:                        persons = new ArrayList
       
        ();                        break ;                    //元素开始                    case XmlPullParser.START_TAG:                        eleName = parser.getName();                        if("person".equals(eleName)){                            person = new Person();                            person.id = Integer.parseInt(parser.getAttributeValue(0));                        }                        else if("name".equals(eleName)){                            person.name = parser.nextText();                        }                        else if("age".equals(eleName)){                            person.age = Integer.parseInt(parser.nextText());                        }                        break ;                    //标记结束                    case XmlPullParser.END_TAG:                        eleName = parser.getName();                        if("person".equals(eleName)){                            persons.add(person);                        }                        break ;                }                //手动激活下个事件的触发                eventType = parser.next();            }        } catch (Exception e) {            e.printStackTrace();        }        return persons;    }}
       
      
     

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