java解析xml之dom解析xml示例分享

package com.test;

import java.io.file;
import java.util.arraylist;
import java.util.list;
import javax.xml.parsers.documentbuilder;
import javax.xml.parsers.documentbuilderfactory;
import org.w3c.dom.document;
import org.w3c.dom.element;
import org.w3c.dom.node;
import org.w3c.dom.nodelist;

public class domxml {

    public static void main(string[] args) {
        try {
            file file = new file("e:/people.xml"); 
            documentbuilderfactory factory = documentbuilderfactory.newinstance();  
            documentbuilder builder = factory.newdocumentbuilder();  
            document document = builder.parse(file);  
            element element = document.getdocumentelement();

            list<people> peoplelist = new arraylist<people>();
            nodelist peoplenodes = element.getelementsbytagname("people");
            for(int i=0;i<peoplenodes.getlength();i++){  
                people people = new people();
                element peopleelement = (element) peoplenodes.item(i);
                people.setid(peopleelement.getattribute("id"));
                nodelist childpeoplenodes = peopleelement.getchildnodes();
                for(int j=0;j<childpeoplenodes.getlength();j++){
                    //dom解析时候注意子节点前面的空格也会被解析
                    if(childpeoplenodes.item(j) instanceof element){
                        element childpeopleelement = (element) childpeoplenodes.item(j);
                        if(childpeopleelement.getnodetype()==node.element_node){ 
                            if(childpeopleelement.getnodename().equals("name")){
                                people.setenglishname(childpeopleelement.getattribute("en"));
                                people.setname(childpeopleelement.gettextcontent());
                            }
                            else if(childpeopleelement.getnodename().equals("age")){
                                people.setage(childpeopleelement.gettextcontent());   
                            }
                        }
                    }
                }
                peoplelist.add(people);
            }

            for(people people : peoplelist){
                system.out.println(people.getid()+"\t"+people.getname()+"\t"+people.getenglishname()+"\t"+people.getage());
            }

        } catch (exception e) {
            // todo 自动生成的 catch 块
            e.printstacktrace();
        }

       
    }
}