Java-解析-SAX

主函数：
package packet;

import java.io.IOException;
import java.util.List;

import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

public class jx {
public static void main(String[] args) throws Exception, IOException {
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser parser = factory.newSAXParser();
MyHandler mh = new MyHandler();
parser.parse(“http://flash.weather.com.cn/wmaps/xml/china.xml“, mh);
List list = mh.getData();
System.out.println(list);
}
}

MyHandler 类
package packet;

import java.util.ArrayList;
import java.util.List;

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

public class MyHandler extends DefaultHandler {

private String tag;private List<City> list;private City city;public List<City> getData() {    return list;}@Overridepublic void startDocument() throws SAXException {    // 文档开始事件，只执行一次，创建集合    list = new ArrayList<>();}// 开始标签@Overridepublic void startElement(String uri, String localName, String qName,        Attributes attributes) throws SAXException {    // 保存当前正在解析的标签    tag = qName;    // 判断开始标签是student，表示一个学生开始解析，创建学生对象    if ("city".equals(qName)) {        city = new City();        int n = attributes.getLength();        for (int i = 0; i < n; i++) {            String name = attributes.getQName(i);            String value = attributes.getValue(i);            if (name.equals("quName")) {                city.quName = value;            }            if (name.equals("pyName")) {                city.pyName = value;            }            if (name.equals("cityname")) {                city.cityname = value;            }            if (name.equals("state1")) {                city.state1 = value;            }            if (name.equals("state2")) {                city.state2 = value;            }            if (name.equals("stateDetailed")) {                city.stateDetailed = value;            }            if (name.equals("tem1")) {                city.tem1 = value;            }            if (name.equals("tem2")) {                city.tem2 = value;            }            if (name.equals("windState")) {                city.windState = value;            }        }    }}// 结束标签@Overridepublic void endElement(String uri, String localName, String qName)        throws SAXException {    // 改变tag值，当结束标签执行结束之后，在执行characters方法时，不进入任何分支    tag = "";    // 判断结束标签是否是student，如果是，表示一个学生解析结束，将学生对象存储到List集合    if ("city".equals(qName)) {        list.add(city);    }}

}

class City {
String quName;
String pyName;
String cityname;
String state1;
String state2;
String stateDetailed;
String tem1;
String tem2;
String windState;

@Overridepublic String toString() {    return "City [quName=" + quName + ", pyName=" + pyName + ", cityname="            + cityname + ", state1=" + state1 + ",state2=" + state2            + ", stateDetailed=" + stateDetailed + ", tem1=" + tem1            + ", tem2=" + tem2 + ", windState=" + windState + "]";}

}