我要评论package com.test;
import java.io.file;
import java.io.fileinputstream;
import java.util.arraylist;
import java.util.list;
import javax.xml.parsers.saxparser;
import javax.xml.parsers.saxparserfactory;
import org.xml.sax.attributes;
import org.xml.sax.saxexception;
import org.xml.sax.helpers.defaulthandler;
public class saxxml {
public static void main(string[] args) {
file file = new file("e:/people.xml");
try {
saxparserfactory spf = saxparserfactory.newinstance();
saxparser parser = spf.newsaxparser();
saxhandler handler = new saxhandler("people");
parser.parse(new fileinputstream(file), handler);
list<people> peoplelist = handler.getpeoples();
for(people people : peoplelist){
system.out.println(people.getid()+"\t"+people.getname()+"\t"+people.getenglishname()+"\t"+people.getage());
}
} catch (exception e) {
// todo auto-generated catch block
e.printstacktrace();
}
}
}
class saxhandler extends defaulthandler {
private list<people> peoples = null;
private people people;
private string currenttag = null;
private string currentvalue = null;
private string nodename = null;
public list<people> getpeoples() {
return peoples;
}
public saxhandler(string nodename) {
this.nodename = nodename;
}
@override
public void startdocument() throws saxexception {
// todo 当读到一个开始标签的时候，会触发这个方法
super.startdocument();
peoples = new arraylist<people>();
}
@override
public void enddocument() throws saxexception {
// todo 自动生成的方法存根
super.enddocument();
}
@override
public void startelement(string uri, string localname, string name,
attributes attributes) throws saxexception {
// todo 当遇到文档的开头的时候，调用这个方法
super.startelement(uri, localname, name, attributes);
if (name.equals(nodename)) {
people = new people();
}
if (attributes != null && people != null) {
for (int i = 0; i < attributes.getlength(); i++) {
if(attributes.getqname(i).equals("id")){
people.setid(attributes.getvalue(i));
}
else if(attributes.getqname(i).equals("en")){
people.setenglishname(attributes.getvalue(i));
}
}
}
currenttag = name;
}
@override
public void characters(char[] ch, int start, int length)
throws saxexception {
// todo 这个方法用来处理在xml文件中读到的内容
super.characters(ch, start, length);
if (currenttag != null && people != null) {
currentvalue = new string(ch, start, length);
if (currentvalue != null && !currentvalue.trim().equals("") && !currentvalue.trim().equals("\n")) {
if(currenttag.equals("name")){
people.setname(currentvalue);
}
else if(currenttag.equals("age")){
people.setage(currentvalue);
}
}
}
currenttag = null;
currentvalue = null;
}
@override
public void endelement(string uri, string localname, string name)
throws saxexception {
// todo 在遇到结束标签的时候，调用这个方法
super.endelement(uri, localname, name);
if (name.equals(nodename)) {
peoples.add(people);
}
}
}
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