JAVA开发_XML处理

读取并加载XML文件

import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;

import com.alibaba.fastjson.JSON;
import com.lianpay.share.domain.SubMenu;
import com.lianpay.share.domain.SuperMenu;


public class MenusElementMode{

    private InputStream stream;
    private Element xmlRoot;
    @SuppressWarnings("rawtypes")
    private List groupWebElementList;
    @SuppressWarnings({ "rawtypes", "unused" })
    private List webElementList = new ArrayList();
    private static MenusElementMode comInstance = null;
    private MenusElementMode(String fileName) throws Exception{
        SAXBuilder sb = new SAXBuilder();
        stream = this.getClass().getResourceAsStream(fileName);
        Document doc = sb.build(stream);
        xmlRoot = doc.getRootElement(); //得到根元素
        groupWebElementList = xmlRoot.getChildren("menu");
        stream.close();
    }
    /**
     * 获取菜单实体类
     * @return
     * @throws Exception
     */
    public static MenusElementMode getInstance(String busi_trader) throws Exception {
            if (null == comInstance) {
                comInstance = new MenusElementMode("ComMenuElement.xml");
            }
            return comInstance;
        }
    }
    /**
     * 获取菜单列表
     * @return
     */
    public List<SuperMenu> getMenuList() {
        List<SuperMenu> superMenuList = new ArrayList<SuperMenu>();
        List<SubMenu> subMenuList;
        String id = "";
        String name = "";
        String url = "";
        SuperMenu superMenu = null;
        Element element = null;
        SubMenu subMenu = null;
        Element childElement = null;
        @SuppressWarnings("rawtypes")
        List childElementList = null;
        for (int i = 0; i < groupWebElementList.size(); i++) {
            superMenu = new SuperMenu();
            subMenuList = new ArrayList<SubMenu>();
            element = (Element) groupWebElementList.get(i);
            id = element.getAttributeValue("id");
            name = element.getAttributeValue("name");
            url = element.getAttributeValue("url");
            superMenu.setId(id);
            superMenu.setName(name);
            superMenu.setUrl(url);
            childElementList = element.getChildren("item");
            // 存在子分支的菜单
            for (int j = 0; j < childElementList.size(); j++) {
                subMenu = new SubMenu();
                childElement = (Element) childElementList.get(j);
                id = childElement.getAttributeValue("id");
                name = childElement.getAttributeValue("name");
                url = childElement.getAttributeValue("url");
                subMenu.setId(id);
                subMenu.setName(name);
                subMenu.setUrl(url);
                subMenuList.add(subMenu);
            }
            superMenu.setSubMenuList(subMenuList);
            superMenuList.add(superMenu);
        }
        return superMenuList;
    }
    /**
     * @return Returns the stream.
     */
    public InputStream getStream() {
        return stream;
    }

    /**
     * @param stream
     *            The stream to set.
     */
    public void setStream(InputStream stream) {
        this.stream = stream;
    }

    /**
     * @return Returns the xmlRoot.
     */
    public Element getXmlRoot() {
        return xmlRoot;
    }

    /**
     * @param xmlRoot
     *            The xmlRoot to set.
     */
    public void setXmlRoot(Element xmlRoot) {
        this.xmlRoot = xmlRoot;
    }


    public static void main(String[] args) throws JDOMException, IOException {
        List<SuperMenu> superMenuList;
        try {
            superMenuList = MenusElementMode.getInstance("1001").getMenuList();
            System.out.print(JSON.toJSONString(superMenuList));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

XML格式

<?xml version="1.0" encoding="UTF-8"?>
<menus>
    <menu id="1" name="我的首页" url="">
        <item id="1" name="首页" url="/index.htm"></item>
        <item id="2" name="个人信息" url="/traderOperQuery.htm"></item>
        <item id="3" name="商户信息" url="/traderInfoQuery.htm"></item>
    </menu>
</menus>

<script type="text/javascript"> $(function () { $('pre.prettyprint code').each(function () { var lines = $(this).text().split('\n').length; var $numbering = $('<ul/>').addClass('pre-numbering').hide(); $(this).addClass('has-numbering').parent().append($numbering); for (i = 1; i <= lines; i++) { $numbering.append($('<li/>').text(i)); }; $numbering.fadeIn(1700); }); }); </script>