xml-attribute | 易学教程

Writing XML attributes and namespace declarations in a specific order

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问题 I am trying to make an XML file with a root element: <urn:Command complete="true" xmlns:urn="namespaceURI"> So I have an element Command a namespace namespaceURI a prefix urn and finally an attribute string with name complete a value true and no namespace. The code I have made to do this returns: <urn:Command xmlns:urn="namespaceURI" complete="true"> So the problem is I would like the attribute string to be before the namespace definition in the XML file and I can't find a similar problem on

Should I use Elements or Attributes in XML? [duplicate]

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This question already has an answer here: XML attribute vs XML element 20 answers I am learning about XML Attributes from W3Schools . The author mentions the following (emphasis mine): XML Elements vs. Attributes <person sex="female"> <firstname>Anna</firstname> <lastname>Smith</lastname> </person> <person> <sex>female</sex> <firstname>Anna</firstname> <lastname>Smith</lastname> </person> In the first example sex is an attribute. In the last, sex is an element. Both examples provide the same information. There are no rules about when to use attributes and when to use elements. Attributes are

Extracting Attributes from XML Fields in SQL Server 2008 Table

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问题 I have a table with several columns, one of which is a xml column. I do not have a namespace to use in the query. The XML data is always the same structure for all records. Contrived Data create table #temp (id int, name varchar(32), xml_data xml) insert into #temp values (1, 'one', '<data><info x="42" y="99">Red</info></data>'), (2, 'two', '<data><info x="27" y="72">Blue</info></data>'), (3, 'three', '<data><info x="16" y="51">Green</info></data>'), (4, 'four', '<data><info x="12" y="37"

How do I include &, <, > etc in XML attribute values

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问题 I want to create an XML file which will be used to store the structure of a Java program. I am able to successfully parse the Java program and create the tags as required. The problem arises when I try to include the source code inside my tags, since Java source code may use a vast number of entity reference and reserved characters like & , < , > , & . I am not able to create a valid XML. My XML should go like this: <?xml version="1.0"?> <prg name="prg_name"> <class name= "class_name> <parent

how to get the attribute value of an xml node using java

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问题 I've an xml which looks like this: { <xml><ep><source type="xml">...</source><source type="text">..</source></ep></xml>} here i wanna retrieve the value of "source type" where type s an attribute. I 'd tried like this,But its not working: DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance(); try { DocumentBuilder builder = domFactory.newDocumentBuilder(); Document dDoc = builder.parse("D:/workspace1/ereader/src/main/webapp/configurations/config.xml"); System.out.println

Activity Layout: Fragment class: vs android:name attributes

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I've read the documentation about Fragments in the Android Developer Guide and I've seen that sometimes they specify the class to instantiate with the Fragment tag attribute android:name and sometime they use the class: attribute: <fragment android:name="com.example.news.ArticleReaderFragment" android:id="@+id/viewer" android:layout_weight="2" android:layout_width="0dp" android:layout_height="match_parent" /> <fragment class="com.example.android.apis.app.FragmentLayout$TitlesFragment" android:id="@+id/titles" android:layout_weight="1" android:layout_width="0px" android:layout_height="match

Is an xml attribute without a value, valid?

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问题 I want to have an XML attribute without any value, which simply has one meaning when it exists or does not exist. Is that valid? 回答1: An attribute must be specified with the following syntax: Name Eq AttValue where Name is a legal XML name, Eq is = optionally preceded or followed by whitespace, and AttValue is a legal attribute value. This definition is true for both XML 1.0 and XML 1.1. If you are trying to specify an attribute as below: <car owned/> then no, that is not valid. If you are

Activity Layout: Fragment class: vs android:name attributes

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问题 I\'ve read the documentation about Fragments in the Android Developer Guide and I\'ve seen that sometimes they specify the class to instantiate with the Fragment tag attribute android:name and sometime they use the class: attribute: <fragment android:name=\"com.example.news.ArticleReaderFragment\" android:id=\"@+id/viewer\" android:layout_weight=\"2\" android:layout_width=\"0dp\" android:layout_height=\"match_parent\" /> <fragment class=\"com.example.android.apis.app.FragmentLayout

Android : difference between invisible and gone?

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问题 What is the difference between invisible and gone for the View visibility status? 回答1: INVISIBLE: This view is invisible, but it still takes up space for layout purposes. GONE: This view is invisible, and it doesn't take any space for layout purposes. 回答2: From Documentation you can say that View.GONE This view is invisible, and it doesn't take any space for layout purposes. View.INVISIBLE This view is invisible, but it still takes up space for layout purposes. Lets clear the idea with some