如何在java中使用jdom从节点中删除子节点？ [英] How to remove a child from from a node using jdom in java?

问题描述

我有一个xml结构如下：

I have a xml structure as follows:

<rurl modify="0" children="yes" index="8" name="R-URL">
    <status>enabled</status>
    <rurl-link priority="3">http</rurl-link>
    <rurl-link priority="5">http://localhost:80</rurl-link>
    <rurl-link priority="4">abc</rurl-link>
    <rurl-link priority="3">b</rurl-link>
    <rurl-link priority="2">a</rurl-link>
    <rurl-link priority="1">newlinkkkkkkk</rurl-link>
</rurl>

现在，我想删除一个子节点，其中text等于http。目前我正在使用此代码：

Now, I want to remove a child node, where text is equal to http. currently I am using this code:

while(subchilditr.hasNext()){
    Element subchild = (Element)subchilditr.next();
    if (subchild.getText().equalsIgnoreCase(text)) {
        message = subchild.getText();
        update = "Success";
        subchild.removeAttribute("priority");
        subchild.removeContent();
    }

但它并没有从xml文件中完全删除子元素。它离开了我

But it is not completely removing the sub element from xml file. It leaves me with

<rurl-link/>

有什么建议吗？

推荐答案

你需要这样做：

List<Element> elements = new ArrayList<Element>();

while (subchilditr.hasNext()) {
    Element subchild = (Element) subchilditr.next();
    if (subchild.getText().equalsIgnoreCase(text)) {
        elements.add(subchild);
    }
}

for (Element element : elements) {
    element.getParent().removeContent(element);
}

如果您尝试删除循环内的元素，您将获得一个 ConcurrentModificationException 。

If you try to remove an element inside of the loop you'll get a ConcurrentModificationException.

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