Among them, "xml" is the processing instruction name, version="1.0" encoding="gb2312" is the processing instruction information.
4.2 XML and CSS
CSS can be used to set the display mode of XML files, that is, add the following statement at the head of the XML file, below the XML declaration:
Let’s use examples to introduce how to use CSS to display XML files. First create a css file, the code is as follows:
flowers.css: A CSS style that displays XML files
using using using using using using through through out through out through out through out through out through ‐ ‐ toward ‐ ‐‐ ‐ , and that the code is as follows:
flowers.css red}
price{display:block}
Then, use this css style in the flowers.xml file, that is, add the following statement below the XML declaration in the flowers.xml file:
The complete program code is as follows:
ex4_3_01.xml: Use CSS to display XML files
shop1
lower>
;/Vendor>
shop3 How this example appears in the browser The effect is shown in Figure 4.2. Figure 4.2 Using CSS to display XML files When using CSS to display XML files, there is no selectivity. That is to say, all data under the root element will be displayed, and the structure and structure of the original file cannot be changed. The order of content. In addition, CSS does not support Chinese tags because CSS is not a style language specifically developed for XML, but the XSL introduced below will do. XSL is specially designed for XML and is more complex than CSS. 4.3 XSLThe effect of using CSS to display XML files introduced in the previous section is not very satisfactory. In fact, CSS is mainly suitable for HTML files. For data files such as XML, CSS is not suitable, especially for those When the file contents need to be rearranged and displayed according to different conditions, XSL can be used. XSL is currently the most powerful and flexible style language. It is specially designed for applying XML. It is much more complex than CSS. However, it is currently not well supported and not yet finalized. Use XSL to set the display mode of the XML file, that is, add the following statement to the head of the XML file, below the XML declaration: Below we use examples to introduce how to use XSL to display XML files. First create an xsl file, the code is as follows: flowers.xsl: xsl file used to display XML files
sl:for-each select ="//Flowers/Flower">
We can watch Output: An XSL file is just like an empty HTML file, and a traditional HTML file is produced by filling in an XML file.
An XSL file must first have an XML declaration (i.e. the first line), because XSL is actually a special XML file. The root element of XSL is xsl:stylesheet, that is, an XSL document must start with the tag and end with the tag. The xmlns:xsl attribute is used to set the XSL name domain.
The root element of XSL is usually composed of one or more template elements. In this example, it only contains a single template. It starts with the tag and ends with the tag. Use The match attribute can select qualified nodes in the XML file, that is, set the template name. For the top-level template, match is set to "/", which represents the root element of the entire XML file.
Then get the required data from the XML file. The easiest way to get the data is:
If you want to get multiple elements, you need to Use the xsl:for-each element in the following format:
…..
Connect Next, we need to use this xsl file in the flowers.xml file, that is, add the following statement under the XML declaration in the flowers.xml file:
The complete program code is as follows:
ex4_4_01.xml: Using XSL to display XML files
;
/Name>
$4.30
$3.50
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The speed of mobile XML to PDF depends on the following factors: the complexity of XML structure. Mobile hardware configuration conversion method (library, algorithm) code quality optimization methods (select efficient libraries, optimize algorithms, cache data, and utilize multi-threading). Overall, there is no absolute answer and it needs to be optimized according to the specific situation.
It is impossible to complete XML to PDF conversion directly on your phone with a single application. It is necessary to use cloud services, which can be achieved through two steps: 1. Convert XML to PDF in the cloud, 2. Access or download the converted PDF file on the mobile phone.
It is not easy to convert XML to PDF directly on your phone, but it can be achieved with the help of cloud services. It is recommended to use a lightweight mobile app to upload XML files and receive generated PDFs, and convert them with cloud APIs. Cloud APIs use serverless computing services, and choosing the right platform is crucial. Complexity, error handling, security, and optimization strategies need to be considered when handling XML parsing and PDF generation. The entire process requires the front-end app and the back-end API to work together, and it requires some understanding of a variety of technologies.
To open a web.xml file, you can use the following methods: Use a text editor (such as Notepad or TextEdit) to edit commands using an integrated development environment (such as Eclipse or NetBeans) (Windows: notepad web.xml; Mac/Linux: open -a TextEdit web.xml)
An application that converts XML directly to PDF cannot be found because they are two fundamentally different formats. XML is used to store data, while PDF is used to display documents. To complete the transformation, you can use programming languages and libraries such as Python and ReportLab to parse XML data and generate PDF documents.
XML formatting tools can type code according to rules to improve readability and understanding. When selecting a tool, pay attention to customization capabilities, handling of special circumstances, performance and ease of use. Commonly used tool types include online tools, IDE plug-ins, and command-line tools.
Use most text editors to open XML files; if you need a more intuitive tree display, you can use an XML editor, such as Oxygen XML Editor or XMLSpy; if you process XML data in a program, you need to use a programming language (such as Python) and XML libraries (such as xml.etree.ElementTree) to parse.
There are two ways to export XML to PDF: using XSLT and using XML data binding libraries. XSLT: Create an XSLT stylesheet, specify the PDF format to convert XML data using the XSLT processor. XML Data binding library: Import XML Data binding library Create PDF Document object loading XML data export PDF files. Which method is better for PDF files depends on the requirements. XSLT provides flexibility, while the data binding library is simple to implement; for simple conversions, the data binding library is better, and for complex conversions, XSLT is more suitable.
