Question

似乎无法追查我获得HIERARCHY_REQUEST_ERR: An attempt was made to insert a node where it is not permitted.

的原因

这是我的片段中的实际写作

DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
Document doc = docBuilder.newDocument();
Element rootElement;
Element childElement;

/* iterate through list */
Iterator<Map<String,String>> mapItrList = mapList.iterator();
Map<String, String> tempMap;
String[] tempKeySet;

while(mapItrList.hasNext())
{
    tempMap = mapItrList.next();

    /* process each data */

    rootElement = doc.createElement(key);
    rootElement.setAttribute("id", tempMap.get(key));
    doc.appendChild(rootElement);


    tempKeySet = tempMap.keySet().toString().replace("[", "").replace("]", "").split(",");

    for(int temp = 0; temp < tempKeySet.length; temp++)
    {   
        if(!tempKeySet[temp].equals(key))
        {
            childElement = doc.createElement("col");
            childElement.setAttribute("id", tempKeySet[temp].toString());
            childElement.appendChild(doc.createTextNode(tempMap.get(tempKeySet[temp])));
            rootElement.appendChild(childElement);
        }
        else
        {
            /* do nothing */
        }

    }

}


// write the content into xml file
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource source = new DOMSource(doc);
//StreamResult result = new StreamResult(new File("file.xml"));
StreamResult result =  new StreamResult(System.out);

transformer.transform(source, result);

System.out.println("File saved!");

预期的XML结果

<Outer id="asdf">
    <col id="asdf">
        asdf
    </col>
    <col id="asdf3">
        asdf
    </col>
    ...
</Outer>
<Outer id="asdf">
    <col id="asdf">
        asdf
    </col>
    <col id="asdf3">
        asdf
    </col>
    ...
</Outer>
<Outer id="asdf">
    <col id="asdf">
        asdf
    </col>
    <col id="asdf3">
        asdf
    </col>
    ...
</Outer>
...

主要提示：

tempMap有这种结构

{
 Status1=status1, 
 Status2=status2, 
 Type=myType, 
 Status3=status3,
 Status4=status4
}

键指的是XML上的<Outer>

col指的是内循环

只是你知道为什么有一个while，因为我迭代了一个Map列表所以它预计会有很多在Map内部还有许多输入，因此在while循环的第一次迭代中，预期的xml将如下所示

<Outer id="asdf">
    <col id="asdf">
        asdf
    </col>
    <col id="asdf3">
        asdf
    </col>
    ...
</Outer>

但似乎有一个错误，即我无法追踪..

============================ UPDATE =============== =============

kdgregory所指出的有同样问题的人的利益你必须指定一个基本元素。这解决了我的情况

使用java编写XML会导致HIERARCHY_REQUEST_ERR

0 个答案: