package com.fenuang.sec;

import java.io.File;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;

import javax.print.Doc;

import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;

import com.fenuang.demo4j.contest;

public class trueuse {

	public static void main(String[] args) {
		// TODO Auto-generated method stub

		try {
			// 例項化一個類用於新增xml檔案
			List<contest> list = new ArrayList<>();

			SAXReader reader = new SAXReader();
			Document doc = reader.read(new File("./conf/test.xml"));
			// 讀取指定標籤
			Iterator<Element> eleit = doc.getRootElement().elementIterator("user");

			ArrayList newlist = new ArrayList(); // 建立新集合
			while (eleit.hasNext()) {

				Element ele = eleit.next();
				contest con = new contest();
				con.setId(ele.attributeValue("id"));
				con.setName(ele.elementText("name"));
				con.setEmail(ele.elementText("email"));
				con.setQq(ele.elementText("qq"));
				con.setWife(ele.elementText("wife"));
				list.add(con);

				Iterator it = list.iterator(); // 通過老集合獲取迭代器
				while (it.hasNext()) { // 遍歷老集合
					Object obj = it.next(); // 得到老集合的元素
					if (!newlist.contains(obj)) {
						newlist.add(obj);
					}
				}

			}

			System.out.println(list.get(0));
			// System.out.println(" =======");
			System.out.println(list.get(1));
			// System.out.println(" =======");
			System.out.println(list.get(2));

		} catch (

		Exception e) {
			e.printStackTrace();
		}

	}

}
 

下面是用於儲存元素的類

package com.fenuang.demo4j;

import org.omg.Messaging.SyncScopeHelper;

public class contest {
	private String id;
	private String name;
	private String email;
	private String qq;
	private String wife;

	/**
	 * @param id
	 * @param name
	 * @param email
	 * @param qq
	 * @param wife
	 */
	public contest(String id, String name, String email, String qq, String wife) {
		super();
		this.id = id;
		this.name = name;
		this.email = email;
		this.qq = qq;
		this.wife = wife;
	}

	/**
	 * @param id
	 * @param name
	 * @param email
	 * @param qq
	 * @param wife
	 */
	public contest() {

	}

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getEmail() {
		return email;
	}

	public void setEmail(String email) {
		this.email = email;
	}

	public String getQq() {
		return qq;
	}

	public void setQq(String qq) {
		this.qq = qq;
	}

	public String getWife() {
		return wife;
	}

	public void setWife(String wife) {
		this.wife = wife;
	}

	@Override
	public String toString() {
		// TODO Auto-generated method stub
		return this.email + "--" + this.id + "--" + this.name + "--" + this.qq + "--" + this.wife+"	";

		
	}

}
 

<?xml version="1.0" encoding="utf-8"?>

<contestList>
	<user id="001">
		<name>王五</name>
		<email>2222222</email>
		<qq>4fenuang</qq>
		<wife>6fenuang</wife>
	</user>

	<user id="002">
		<name>李四</name>
		<email>4444444</email>
		<qq>4fenuang</qq>
		<wife>6fenuang</wife>
	</user>


	<user id="003">
		<name>張三</name>
		<email>2fenuang</email>
		<qq>333333</qq>
		<wife>6fenuang</wife>
	</user>



</contestList>