简单地解析XML文件

SAXParserFactory factory=SAXParserFactory.newInstance();
SAXParser parser=factory.newSAXParser();
XMLReader reader=parser.getXMLReader();
//handler是一个ContentHandler实现类的实例
reader.setContentHandler(handler);

public class MyHandler implements ContentHandler{
boolean flag_lat,flag_lng,flag_location,flag_address;
String str_address,str_lat,str_lng;
public String getData()
{
return "地址: " + str_address + "\n经度: " + str_lng + "\n纬度: " + str_lat;
}
public void startElement(String uri, String localName, String qName,
Attributes atts) throws SAXException {
if (localName.equals("formatted_address")) {
flag_address = true;
}
if(localName.equals("location"))
{
flag_location=true;
}
if(flag_location==true)
{
if(localName.equals("lat"))
{
flag_lat=true;
}
if(localName.equals("lng"))
{
flag_lng=true;
}
}
}
public void characters(char[] ch, int start, int length)
throws SAXException {
if(flag_lat == true)
{
str_lat=new String(ch,start,length);
}
if (flag_address == true) {
str_address = new String(ch, start, length);
}
if(flag_lng== true)
{
str_lng=new String(ch,start,length);
}
}
public void endElement(String uri, String localName, String qName)
throws SAXException {
if (localName.equals("lat")) {
flag_lat=false;
}
if(localName.equals("lng"))
{
flag_lng=false;
}
if(localName.equals("location"))
{
flag_location=false;
}
if (localName.equals("formatted_address")) {
flag_address = false;
}
}
}