Pull Parse XML file

Pull Parse XML file

• Write an XML file yourself, save some weather information

Get the XML file

    InputStream is = getClassLoader().getResourceAsStream("weather.xml");

Get the pull parser.

    XmlPullParser xp = Xml.newPullParser();

Start parsing

• Get the event type

   int type = Xp.geteventtype ();  

• There are five main types of events

  • START_ The event type of the Document:xml header
  • end_document:xml tail
  • start_tag: The event type of the start node
  • end_tag: Event type of end node
  • text: The event type of the text node

• If the event type obtained is not end_document, the parsing is not complete, if it is, the parsing is complete, and the while loop ends

   while (Type! = xmlpullparser.end_document)  

• When we resolve to different nodes, we need to do different things, so we can judge the name of the current node.

  • When parsing to the start node of weather, the new list
  • When resolving to the start node of city, the city object is created and the object is created to make it easier to save the text that will be parsed

  • When parsing to the name start node, gets the text content of the next node, same as temp, PM

    Case xmlpullparser.start_tag://Gets the name of the current node if ("Weather". Equals (Xp.getname ())) {citys = new arraylist<city> ()    ;    } else if ("City". Equals (Xp.getname ())) {city = new city ();        } else if ("name". Equals (Xp.getname ())) {//Gets the text of the next node of the current node String name = Xp.nexttext ();    City.setname (name);        } else if ("temp". Equals (Xp.getname ())) {String temp = Xp.nexttext ();    City.settemp (temp);        } else if ("PM". Equals (Xp.getname ())) {String pm = Xp.nexttext ();    CITY.SETPM (PM); } break;

•   case XmlPullParser.END_TAG:if (' City '. Equals (Xp.getname ())) {Citys.add (city); }

 　　　　　　 //get the resource file to the SRC folderInputStream is = getClassLoader (). getResourceAsStream ("Weather.xml"); //get the Pull parser objectXmlpullparser XP =Xml.newpullparser (); //Initialize        Try{xp.setinput (IS,"GBK"); //gets the event type of the current node, with the event type's judgment, we can know what node the current node is, thus determining what we should do            intType =Xp.geteventtype (); City City=NULL;  while(Type! =xmlpullparser.end_document) {                //depending on the type of node, different operations are done                Switch(type) { CaseXmlpullparser.start_tag://gets the name of the current node                    if("Weather". Equals (Xp.getname ())) {                        //Create a City collection object to hold the city's JavaBeanCityList =NewArraylist<city>(); }                    Else if("City". Equals (Xp.getname ())) {                        //Create a JavaBean object for CityCity =NewCity (); }                    Else if("Name". Equals (Xp.getname ())) {                        //gets the text of the next node of the current nodeString name =Xp.nexttext ();                    City.setname (name); }                    Else if("Temp". Equals (Xp.getname ())) {                        //gets the text of the next node of the current nodeString temp =Xp.nexttext ();                    City.settemp (temp); }                    Else if("PM". Equals (Xp.getname ())) {                        //gets the text of the next node of the current nodeString pm =Xp.nexttext ();                    CITY.SETPM (PM); }                     Break;  CaseXmlpullparser.end_tag:if("City". Equals (Xp.getname ())) {                        //put the city's JavaBean in the collectionCitylist.add (city); }                     Break; }                                //move the pointer to the next node and return the event type for that nodeType =Xp.next (); }                         for(city c:citylist) {System.out.println (c.tostring ()); }        } Catch(Exception e) {//TODO auto-generated Catch blockE.printstacktrace (); } 

Pull Parse XML file