XPath对XML文档的解析

package it.xiehe.xml;

import java.io.File;
import java.util.List;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Node;
import org.dom4j.io.SAXReader;

/*
 * @模拟用户登录验证
 * @xml充当数据库存放数据
 */
public class DemoXPath {

    // XPath 用户登录验证
    public static void main(String[] args) throws Exception {
        // 用户信息如下
        String name = "aaa";
        String password = "123";

        SAXReader reader = new SAXReader();
        Document document = reader.read(new File("src/users.xml"));

        Node node = document.selectSingleNode("//user[@name=‘" + name
                + "‘ and @password=‘" + password + "‘]");
        // List list =
        // document.selectNodes("//user[@name=‘"+name+"‘ and @password=‘"+password+"‘]");
        if (node == null) {
            System.out.println("密码或账号出错了！");
        } else {
            //
            System.out.println("登录成功！");
        }
    }

}
-------------------------users----------------------------
<?xml version="1.0" encoding="UTF-8"?>
<users>
 <user name="aaa" password="123" phone="456"></user>
 <user name="bbb" password="789" phone="123"></user>
</users>