Java 如何从另一个xml文件动态更新xml文件?
我想从另一个xml文件更新一个xml文件。我使用了一个xml文件,如下所示: one.xmlJava 如何从另一个xml文件动态更新xml文件?,java,android,xml,updatexml,Java,Android,Xml,Updatexml,我想从另一个xml文件更新一个xml文件。我使用了一个xml文件,如下所示: one.xml <?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" android:background="#00BFFF">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<LinearLayout
android:id="@+id/linearLayout1"
android:layout_width="fill_parent"
android:layout_height="wrap_content" android:gravity="center" android:visibility="visible">
</LinearLayout>
<LinearLayout
android:id="@+id/linearLayout2"
android:layout_width="fill_parent"
android:layout_height="wrap_content" android:gravity="center" android:visibility="visible">
</LinearLayout>
</LinearLayout>
</ScrollView>
two.xml如下所示:
<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
<map>
<int name="linearLayout1" value="8" />
<int name="linearLayout2" value="0" />
</map>
从以上两个xml文件中,我想将属性值更改为1。xml何时 如果
从two.xml开始,我想将one.xml文件更新为where LinearLayoutandroid:id=“@+id/linearLayout1”然后将属性值更改为android:visibility=“gone”这是您想要的代码
DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
Document doc = docBuilder.parse("/home/riddhish/developerworkspace/SplitString/src/com/updatexmlwithjava/two.xml");
DocumentTraversal traversal = (DocumentTraversal) doc;
Node a = doc.getDocumentElement();
NodeIterator iterator = traversal.createNodeIterator(a, NodeFilter.SHOW_ELEMENT, null, true);
/**
*检查逻辑
**/
/**
*读取one.xml并设置android:visibility=“gone”的逻辑
**/
/**
*重写one.xml的逻辑
**/
这是你想要的代码
DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
Document doc = docBuilder.parse("/home/riddhish/developerworkspace/SplitString/src/com/updatexmlwithjava/two.xml");
DocumentTraversal traversal = (DocumentTraversal) doc;
Node a = doc.getDocumentElement();
NodeIterator iterator = traversal.createNodeIterator(a, NodeFilter.SHOW_ELEMENT, null, true);
/**
*检查逻辑
**/
/**
*读取one.xml并设置android:visibility=“gone”的逻辑
**/
/**
*重写one.xml的逻辑
**/
“如果**从**2.xml更改属性值one.xml”,解释更多信息。我想更新one.xml文件如果是windows,您的平台是什么?使用“\\”读取文件会发生什么,这不是您想要的代码?“如果**从**2.xml更改属性值one.xml”,解释更多信息。我想更新一个.xml文件如果是windows,你的平台是什么?使用“\\”读取文件会发生什么,这不是你想要的代码?谢谢你的回答,但它只适用于linearLayout1。如果有人修改了2.xml,那么我们应该如何动态编写。你有getAttribute(),GetTaName(),getTextContent()用于动态检查属性值,因此这取决于您的逻辑设置方式。感谢您的回答,但它仅适用于linearLayout1。如果有人修改了two.xml,那么我们应该如何动态编写。您可以使用getAttribute()、getTagName()、getTextContent()动态检查属性值,所以,这取决于你的逻辑,你想如何设置。
boolean flag=false;
for (Node n = iterator.nextNode(); n != null; n = iterator.nextNode()) {
Element e = (Element) n;
if ("int".equals(e.getTagName())) {
if(e.getAttribute("name").equals("linearLayout1")){
if(e.getAttribute("value").equals("8"))
flag=true;
}
}
}
docFactory = DocumentBuilderFactory.newInstance();
docBuilder = docFactory.newDocumentBuilder();
doc = docBuilder.parse("/home/riddhish/developerworkspace/SplitString/src/com/updatexmlwithjava/one.xml");
traversal = (DocumentTraversal) doc;
a = doc.getDocumentElement();
iterator = traversal.createNodeIterator(a, NodeFilter.SHOW_ELEMENT, null, true);
for (Node n = iterator.nextNode(); n != null; n = iterator.nextNode()) {
Element e = (Element) n;
if ("LinearLayout".equals(e.getTagName())) {
if(e.getAttribute("android:id").equals("@+id/linearLayout1")){
if(flag==true){
System.out.println(""+e.getAttribute("android:visibility"));
e.setAttribute("android:visibility", "gone");
}
}
}
}
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource source = new DOMSource(doc);
StreamResult result = new StreamResult(new File("/home/riddhish/developerworkspace/SplitString/src/com/updatexmlwithjava/one.xml"));
iterator = traversal.createNodeIterator(a, NodeFilter.SHOW_ELEMENT, null, true);
doc = docBuilder.newDocument();
Element rootElement = doc.createElement("ScrollView");
doc.appendChild(rootElement);
for (Node n = iterator.nextNode(); n != null; n = iterator.nextNode()) {
rootElement.appendChild(doc.importNode(n, true));
}
transformer.transform(source, result);