把xml转换成map

发布时间：2020-12-15 23:16:18 所属栏目：百科来源：网络整理

导读：传过来一个xml文件,需要转换成Map,能够应对不用结构的xml,而不是只针对固定格式的xml. 转换规则: 1.主要是Map与List的互相嵌套 2.同名称的节点会被装进List 如下面的xml文件: Xml代码 ? xml version = "1.0" encoding = "UTF-8" ? GmMail template_id 2 / to

传过来一个xml文件,需要转换成Map,能够应对不用结构的xml,而不是只针对固定格式的xml.
转换规则:
1.主要是Map与List的互相嵌套
2.同名称的节点会被装进List

如下面的xml文件:

    Xml代码 
    
  
 <?xmlversion="1.0"encoding="UTF-8"?>
<GmMail>
template_id>2</to_address>test@corp.gm.comto_alias>tommessage>XML-未来世界Messagerecipient_name>xml-tomsend_address>xml-test@163.comsender_comp_name>xml-gmsubject>xml-helloguysselected_itemsitem_groupitem_url>http://china.gm.comitem_name>gm中文站item_desc>gm中文站descitem_desc2>gm中文站desc2item_desc3>gm中文站desc3item_desc4>gm中文站desc4items_source>products>http://www.gm.com>gm>gmdescattachmentsattachment-groupattachment_url http://china.gm.com/pics/com.cn.gm/story/frsc.jpg
attachment_name>黄晓豫attachment_descdesc1>attach-desc1desc2>attach-desc2desc3>attach-desc3desc4>attach-desc4 http://china.gm.com/pics/com.cn.gm/story/wr.jpg
>张中汉desc_groupdesc_item>desc_item_1>desc_item_2>desc_item_3>desc_item_4>desc_item_5>

转换后的的Map(转换成字符串的效果):

Java代码

{message=XML-未来世界Message,selected_items={items_source=products,item_group=[{item_name=gm中文站,item_desc=gm中文站desc,item_desc2=gm中文站desc2,item_desc4=gm中文站desc4,item_url=http://china.gm.com,item_desc3=gm中文站desc3},{item_name=gm,item_desc=gmdesc,item_url=http://www.gm.com}]},to_alias=tom,desc_group={desc_item=[desc_item_1,desc_item_2,desc_item_3,desc_item_4,desc_item_5]},sender_comp_name=xml-gm,subject=xml-helloguys,to_address=test@corp.gm.com,template_id=2,attachments={attachment-group=[{attachment_url=http://china.gm.com/pics/com.cn.gm/story/frsc.jpg,attachment_name=黄晓豫,attachment_desc={desc3=attach-desc3,desc4=attach-desc4,desc1=attach-desc1,desc2=attach-desc2}},{attachment_url=http://china.gm.com/pics/com.cn.gm/story/wr.jpg,attachment_name=张中汉,attachment_desc=[{desc1=attach-desc1,desc2=attach-desc2},{desc1=attach-desc1,desc2=attach-desc2}]}]},recipient_name=xml-tom,send_address=xml-test@163.com}

xml处理用的dom4j
下面是实现转换的主要类XmlUtils:
packagexml.dom4j;

importjava.util.ArrayList;

importjava.util.HashMap;

importjava.util.Iterator;

importjava.util.List;

importjava.util.Map;

importorg.dom4j.Document;

importorg.dom4j.Element;

publicclassXmlUtils{

staticMap<String,Object>Dom2Map(Documentdoc){

Map<String,Object>map=newHashMap<String,Object>();

if(doc==null)

returnmap;

Elementroot=doc.getRootElement();

for(Iteratoriterator=root.elementIterator();iterator.hasNext();){

Elemente=(Element)iterator.next();

//System.out.println(e.getName());

Listlist=e.elements();

if(list.size()>0){

map.put(e.getName(),Dom2Map(e));

}else

}

staticMapDom2Map(Elemente){

Mapmap=newHashMap();

for(inti=0;i<list.size();i++){

Elementiter=(Element)list.get(i);

ListmapList=newArrayList();

if(iter.elements().size()> Mapm=Dom2Map(iter);

if(map.get(iter.getName())!=null){

Objectobj=map.get(iter.getName());

if(!obj.getClass().getName().equals("java.util.ArrayList")){

mapList= mapList.add(obj);

mapList.add(m);

if(obj.getClass().getName().equals("java.util.ArrayList")){

mapList=(List)obj;

map.put(iter.getName(),mapList);

else{

mapList.add(iter.getText());

}

下面是一个创建xml的类(不重要,可以忽略,只是用来生成一个xml以便测试,可以自己写)
importorg.dom4j.DocumentHelper;

classCreateXml{

/**

*@paramargs

staticvoidmain(String[]args){

//TODOAuto-generatedmethodstub

publicDocumentcreateXml(){

Documentdoc=DocumentHelper.createDocument();

Elemente=doc.addElement("GmMail");

e.addElement("template_id").setText("2");

e.addElement("to_address").setText("test@corp.gm.com");

e.addElement("to_alias").setText("tom");

e.addElement("message").setText("XML-未来世界Message");

e.addElement("recipient_name").setText("xml-tom");

e.addElement("send_address").setText("xml-test@163.com");

e.addElement("sender_comp_name").setText("xml-gm");

e.addElement("subject").setText("xml-helloguys");

ElementSelecteditems=e.addElement("selected_items");

ElementitemsGroup=Selecteditems.addElement("item_group");

//Elementitem=itemsGroup.addElement("item");

itemsGroup.addElement("item_url").setText("http://china.gm.com");

itemsGroup.addElement("item_name").setText("gm中文站");

itemsGroup.addElement("item_desc").setText("gm中文站desc");

itemsGroup.addElement("item_desc2").setText("gm中文站desc2");

itemsGroup.addElement("item_desc3").setText("gm中文站desc3");

itemsGroup.addElement("item_desc4").setText("gm中文站desc4");

Selecteditems.addElement("items_source").setText("products");

itemsGroup=Selecteditems.addElement("item_group");

itemsGroup.addElement("item_url").setText("http://www.gm.com");

itemsGroup.addElement("item_name").setText("gm");

itemsGroup.addElement("item_desc").setText("gmdesc");

Elementattachment=e.addElement("attachments");

ElementattachmentGroup=attachment.addElement("attachment-group");

attachmentGroup.addElement("attachment_url").setText("http://china.gm.com/pics/com.cn.gm/story/frsc.jpg");

attachmentGroup.addElement("attachment_name").setText("黄晓豫");

ElementattachmentDesc=attachmentGroup.addElement("attachment_desc");

attachmentDesc.addElement("desc1").setText("attach-desc1");

attachmentDesc.addElement("desc2").setText("attach-desc2");

attachmentDesc.addElement("desc3").setText("attach-desc3");

attachmentDesc.addElement("desc4").setText("attach-desc4");

attachmentGroup=attachment.addElement("attachment-group");

attachmentGroup.addElement("attachment_url").setText("http://china.gm.com/pics/com.cn.gm/story/wr.jpg");

attachmentGroup.addElement("attachment_name").setText("张中汉");

attachmentDesc=attachmentGroup.addElement("attachment_desc");

ElementdescGroup=e.addElement("desc_group");

descGroup.addElement("desc_item").setText("desc_item_1");

descGroup.addElement("desc_item").setText("desc_item_2");

descGroup.addElement("desc_item").setText("desc_item_3");

descGroup.addElement("desc_item").setText("desc_item_4");

descGroup.addElement("desc_item").setText("desc_item_5");

returndoc;

下面是main调用类:

Java代码

CreateXmlcreate=newCreateXml();
Documentdoc=create.createXml();
StringstrXml=doc.asXML();
System.out.println(strXml);
Mapmap=XmlUtils.Dom2Map(doc);
System.out.println(map.toString());
}

转发：http://ziyu-1.iteye.com/blog/469003

（编辑：李大同）

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