http://ziyu-1.iteye.com/blog/469003
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:
1 <?xml version="1.0" encoding="UTF-8"?> 2 <GmMail> 3 <template_id>2</template_id> 4 <to_address>[email protected]</to_address> 5 <to_alias>tom</to_alias> 6 <message>XML-未来世界 Message</message> 7 <recipient_name>xml-tom</recipient_name> 8 <send_address>[email protected]</send_address> 9 <sender_comp_name>xml-gm</sender_comp_name> 10 <subject>xml-hello guys</subject> 11 <selected_items> 12 <item_group> 13 <item_url>http://china.gm.com</item_url> 14 <item_name>gm中文站</item_name> 15 <item_desc>gm中文站desc</item_desc> 16 <item_desc2>gm中文站desc2</item_desc2> 17 <item_desc3>gm中文站desc3</item_desc3> 18 <item_desc4>gm中文站desc4</item_desc4> 19 </item_group> 20 <items_source>products</items_source> 21 <item_group> 22 <item_url>http://www.gm.com</item_url> 23 <item_name>gm</item_name> 24 <item_desc>gmdesc</item_desc> 25 </item_group> 26 </selected_items> 27 <attachments> 28 <attachment-group> 29 <attachment_url> 30 http://china.gm.com/pics/com.cn.gm/story/frsc.jpg 31 </attachment_url> 32 <attachment_name>黄晓豫</attachment_name> 33 <attachment_desc> 34 <desc1>attach-desc1</desc1> 35 <desc2>attach-desc2</desc2> 36 <desc3>attach-desc3</desc3> 37 <desc4>attach-desc4</desc4> 38 </attachment_desc> 39 </attachment-group> 40 <attachment-group> 41 <attachment_url> 42 http://china.gm.com/pics/com.cn.gm/story/wr.jpg 43 </attachment_url> 44 <attachment_name>张中汉</attachment_name> 45 <attachment_desc> 46 <desc1>attach-desc1</desc1> 47 <desc2>attach-desc2</desc2> 48 </attachment_desc> 49 <attachment_desc> 50 <desc1>attach-desc1</desc1> 51 <desc2>attach-desc2</desc2> 52 </attachment_desc> 53 </attachment-group> 54 </attachments> 55 <desc_group> 56 <desc_item>desc_item_1</desc_item> 57 <desc_item>desc_item_2</desc_item> 58 <desc_item>desc_item_3</desc_item> 59 <desc_item>desc_item_4</desc_item> 60 <desc_item>desc_item_5</desc_item> 61 </desc_group> 62 </GmMail>
转换后的的Map(转换成字符串的效果):
{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-hello guys, [email protected], 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, [email protected]}
xml处理用的dom4j
下面是实现转换的主要类XmlUtils:
1 package xml.dom4j;
2
3 import java.util.ArrayList;
4 import java.util.HashMap;
5 import java.util.Iterator;
6 import java.util.List;
7 import java.util.Map;
8
9 import org.dom4j.Document;
10 import org.dom4j.Element;
11
12 public class XmlUtils {
13
14 public static Map<String, Object> Dom2Map(Document doc){
15 Map<String, Object> map = new HashMap<String, Object>();
16 if(doc == null)
17 return map;
18 Element root = doc.getRootElement();
19 for (Iterator iterator = root.elementIterator(); iterator.hasNext();) {
20 Element e = (Element) iterator.next();
21 //System.out.println(e.getName());
22 List list = e.elements();
23 if(list.size() > 0){
24 map.put(e.getName(), Dom2Map(e));
25 }else
26 map.put(e.getName(), e.getText());
27 }
28 return map;
29 }
30
31
32 public static Map Dom2Map(Element e){
33 Map map = new HashMap();
34 List list = e.elements();
35 if(list.size() > 0){
36 for (int i = 0;i < list.size(); i++) {
37 Element iter = (Element) list.get(i);
38 List mapList = new ArrayList();
39
40 if(iter.elements().size() > 0){
41 Map m = Dom2Map(iter);
42 if(map.get(iter.getName()) != null){
43 Object obj = map.get(iter.getName());
44 if(!obj.getClass().getName().equals("java.util.ArrayList")){
45 mapList = new ArrayList();
46 mapList.add(obj);
47 mapList.add(m);
48 }
49 if(obj.getClass().getName().equals("java.util.ArrayList")){
50 mapList = (List) obj;
51 mapList.add(m);
52 }
53 map.put(iter.getName(), mapList);
54 }else
55 map.put(iter.getName(), m);
56 }
57 else{
58 if(map.get(iter.getName()) != null){
59 Object obj = map.get(iter.getName());
60 if(!obj.getClass().getName().equals("java.util.ArrayList")){
61 mapList = new ArrayList();
62 mapList.add(obj);
63 mapList.add(iter.getText());
64 }
65 if(obj.getClass().getName().equals("java.util.ArrayList")){
66 mapList = (List) obj;
67 mapList.add(iter.getText());
68 }
69 map.put(iter.getName(), mapList);
70 }else
71 map.put(iter.getName(), iter.getText());
72 }
73 }
74 }else
75 map.put(e.getName(), e.getText());
76 return map;
77 }
78
79 }
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)
1 package xml.dom4j;
2
3 import org.dom4j.Document;
4 import org.dom4j.DocumentHelper;
5 import org.dom4j.Element;
6
7 public class CreateXml {
8
9 /**
10 * @param args
11 */
12 public static void main(String[] args) {
13 // TODO Auto-generated method stub
14
15 }
16
17 public Document createXml(){
18 Document doc = DocumentHelper.createDocument();
19 Element e = doc.addElement("GmMail");
20 e.addElement("template_id").setText("2");
21 e.addElement("to_address").setText("[email protected]");
22 e.addElement("to_alias").setText("tom");
23 e.addElement("message").setText("XML-未来世界 Message");
24 e.addElement("recipient_name").setText("xml-tom");
25 e.addElement("send_address").setText("[email protected]");
26 e.addElement("sender_comp_name").setText("xml-gm");
27 e.addElement("subject").setText("xml-hello guys");
28 Element Selecteditems = e.addElement("selected_items");
29
30 Element itemsGroup = Selecteditems.addElement("item_group");
31 //Element item = itemsGroup.addElement("item");
32 itemsGroup.addElement("item_url").setText("http://china.gm.com");
33 itemsGroup.addElement("item_name").setText("gm中文站");
34 itemsGroup.addElement("item_desc").setText("gm中文站desc");
35 itemsGroup.addElement("item_desc2").setText("gm中文站desc2");
36 itemsGroup.addElement("item_desc3").setText("gm中文站desc3");
37 itemsGroup.addElement("item_desc4").setText("gm中文站desc4");
38 Selecteditems.addElement("items_source").setText("products");
39 itemsGroup = Selecteditems.addElement("item_group");
40 itemsGroup.addElement("item_url").setText("http://www.gm.com");
41 itemsGroup.addElement("item_name").setText("gm");
42 itemsGroup.addElement("item_desc").setText("gmdesc");
43 Element attachment = e.addElement("attachments");
44 Element attachmentGroup = attachment.addElement("attachment-group");
45 attachmentGroup.addElement("attachment_url").setText("http://china.gm.com/pics/com.cn.gm/story/frsc.jpg");
46 attachmentGroup.addElement("attachment_name").setText("黄晓豫");
47 Element attachmentDesc = attachmentGroup.addElement("attachment_desc");
48 attachmentDesc.addElement("desc1").setText("attach-desc1");
49 attachmentDesc.addElement("desc2").setText("attach-desc2");
50 attachmentDesc.addElement("desc3").setText("attach-desc3");
51 attachmentDesc.addElement("desc4").setText("attach-desc4");
52 attachmentGroup = attachment.addElement("attachment-group");
53 attachmentGroup.addElement("attachment_url").setText("http://china.gm.com/pics/com.cn.gm/story/wr.jpg");
54 attachmentGroup.addElement("attachment_name").setText("张中汉");
55 attachmentDesc = attachmentGroup.addElement("attachment_desc");
56 attachmentDesc.addElement("desc1").setText("attach-desc1");
57 attachmentDesc.addElement("desc2").setText("attach-desc2");
58 attachmentDesc = attachmentGroup.addElement("attachment_desc");
59 attachmentDesc.addElement("desc1").setText("attach-desc1");
60 attachmentDesc.addElement("desc2").setText("attach-desc2");
61 Element descGroup = e.addElement("desc_group");
62 descGroup.addElement("desc_item").setText("desc_item_1");
63 descGroup.addElement("desc_item").setText("desc_item_2");
64 descGroup.addElement("desc_item").setText("desc_item_3");
65 descGroup.addElement("desc_item").setText("desc_item_4");
66 descGroup.addElement("desc_item").setText("desc_item_5");
67 return doc;
68 }
69 }
下面是main调用类:
1 package xml.dom4j;
2
3 import java.util.Map;
4
5 import org.dom4j.Document;
6
7 public class Demo {
8
9 public static void main(String[] args){
10 CreateXml create = new CreateXml();
11 Document doc = create.createXml();
12 String strXml = doc.asXML();
13 System.out.println(strXml);
14
15 Map map = XmlUtils.Dom2Map(doc);
16
17 System.out.println(map.toString());
18 }
19
20 }
时间： 2024-10-14 13:49:14