我的数据格式如下(HashMap列表)
{TeamName=India, Name=Sachin, Score=170}
{TeamName=India, Name=Sehwag, Score=120}
{TeamName=Sri-Lanka, Name=Sangakara, Score=20}
{TeamName=Sri-Lanka, Name=Murali, Score=20}
{TeamName=Sri-Lanka, Name=Jayasurya, Score=70}
以下是所需的输出
<node id="1" label="India" >
<node id="1.1" label="Sachin" Score="170" />
<node id="1.2" label="Sehwag" Score="120" />
</node>
<node id="2" label="Sri-Lanka">
<node id="2.1" label="Sangakara" Score="20" />
<node id="2.2" label="Murali" Score="20" />
<node id="2.3" label="Jayasurya" Score="70" />
</node>
<node id="3" label="World-XI">
<node id="2.2" label="Murali" Score="20" />
<node id="1.1" label="Sachin" Score="170" />
</node>
现在,我已经能够生成上述结构,但是有问题,“node id = 3”中的id需要重复,而不是重新创建为3.1 / 3.2。
另一个是,它不一定是节点3是最后一个,我只能迭代它,但可能有许多其他节点。
以下是上面的一段代码,有什么建议吗?
Map hm = new HashMap();
Element em = null;
try {
int serverId = 0;
int clientId = 0;
DocumentBuilderFactory documentBuilderFactory =
DocumentBuilderFactory.newInstance();
DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
Document document = documentBuilder.newDocument();
Element rootElement = document.createElement("CricketDetails");
document.appendChild(rootElement);
for (int i=0; i < l.size(); i++) {
hm = (HashMap) l.get(i);
sortListIP.add(hm.get("TeamName"));
}
Collections.sort(sortListIP);
HashSet h = new HashSet(sortListIP);
sortListIP.clear();
sortListIP.addAll(h);
for (int i=0; i < sortListIP.size(); i++) {
++serverId;
clientId = 0;
em = document.createElement("node");
em.setAttribute("id", ""+serverId);
em.setAttribute("TeamName", ""+sortListIP.get(i));
for (int j=0; j < l.size();j++) {
hm = (HashMap) l.get(j);
if (sortListIP.get(i).equals(hm.get("TeamName"))) {
Element em_child = document.createElement("node");
++clientId;
em_child.setAttribute("id", serverId+"."+clientId);
em_child.setAttribute("label", (String) hm.get("Name"));
em.appendChild(em_child);
rootElement.appendChild(em);
}
}
}
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource source = new DOMSource(document);
StreamResult result = new StreamResult("cricketDetails.xml");
transformer.transform(source, result);
P.S。定义的格式可能不正确,但只需要这样的预期输出!
答案 0 :(得分:1)
如果要修改使用代码生成的节点的属性id,请相应地修改包含em_child.setAttribute("id", serverId+"."+clientId);
的行。父节点id的生成方式类似。
我不确定您的xml是否只是不完整,但在XML中您需要拥有根或文档实体。
“[XML]文档以”root“开头 或文件实体。“ - http://www.w3.org/TR/REC-xml/#sec-documents