XML格式化及解析

XML格式化工具：notepad++   下载地址 http://rj.baidu.com/soft/detail/13478.html?ald    一个教程地址：http://jingyan.baidu.com/album/4b07be3c69172648b380f383.html  

一个很好的notepad教程地址： http://www.crifan.com/files/doc/docbook/rec_soft_npp/release/htmls/npp_func_add_comment.html

一个解析xml 成map的简单的工具类，只支持如下如下格式化的xml 

<object>
    <栏目>李树鹏</栏目>
    <request_day>22</request_day>
    <day>22</day>
    <name>tttt</name>
</object>

XMLValueObject类的全部代码：

import java.io.StringReader;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;

public class XMLValueObject implements java.io.Serializable {

    private static final long serialVersionUID = -3163892375347045824L;

    private static Logger logger = Logger.getLogger(XMLValueObject.class);

    private Map<String, List<String>> map;

    public XMLValueObject() {
        map = new LinkedHashMap<String, List<String>>();
    }

    public void put(String key, String value) {
        if (value == null) {
            return;
        }

        List<String> list = map.get(key);
        if (list == null) {
            list = new ArrayList<String>();
            map.put(key, list);
        }
        list.removeAll(list);
        list.add(value);
    }

    public void put(String key, String[] values) {
        if (values == null || values.length == 0) {
            return;
        }

        List<String> list = map.get(key);
        if (list == null) {
            list = new ArrayList<String>();
            map.put(key, list);
        }
        for (String value : values) {
            list.add(value);
        }
    }

    public Object get(String key) {
        List<String> list = map.get(key);
        return list == null || list.isEmpty() ? null : list.get(0);
    }

    public Object[] getArray(String key) {
        List<String> list = map.get(key);
        return list == null ? new String[0] : list.toArray(new String[0]);
    }

    @SuppressWarnings("unchecked")
    public void fromXML(String xml) {
     try{
         if (StringUtils.isEmpty(xml)) {
             return;
         }
        StringReader in = new StringReader(xml);
        SAXReader reader = new SAXReader(false);
        Document doc = null;
        try {
            doc = reader.read(in);
        }
        catch (DocumentException e) {
            logger.error("Could not read XML[" + xml + "]", e);
        }
        finally {
            in.close();
        }

        Element root = doc.getRootElement();
        List<Element> children = (List<Element>) root.elements();
        for (Element child : children) {
            put(child.getName(), child.getText());
        } 
        
     }catch(Exception e)
     {
         //System.out.print("错误"+e.getMessage()+"："+xml);
         e.printStackTrace();
     }
        
    }

    public String toXML() {
        Document doc = DocumentHelper.createDocument();
        Element root = doc.addElement("object");
        //root.addAttribute("class", XMLValueObject.class.getName());

        for (Map.Entry<String, List<String>> entry : map.entrySet()) {
            String key = entry.getKey();
            List<String> list = entry.getValue();

            for (String value : list) {
                Element child = root.addElement(key);
                child.addText(value);
            }
        }

        return doc.asXML();
    }
    
    public Map<String, List<String>> getMap() {
        return map;
    }

    public void setMap(Map<String, List<String>> map) {
        this.map = map;
    }
}

测试代码：

public static void main(String[] args) {
        XMLValueObject vo = new XMLValueObject();
        vo.fromXML("<object><栏目>李树鹏</栏目><request_day>22</request_day><day>22</day><name>tttt</name></object>");
        System.out.println(vo.get("栏目"));
        vo.put("temp", "1212");
        System.out.println(vo.toXML());
    }