Analysis
The REXSL framework is a Java class library for developing rich client applications, which provides a technical principle based on XML.This article will analyze the technical principles of the REXSL framework and provide some related Java code examples.
The REXSL framework uses XSLT (Extensible Stylesheet Language Transformations) technology and XML (Extensible Markup Language) to achieve the development of rich client applications.Its core principle is to convert XML data into a suitable format by using the XSLT style table, and then display these data content on the client.
First, we need to understand XSLT technology.XSLT is a language for XML document conversion. It uses an XSLT style table to convert a XML document into another XML document, HTML page or other text formats.In the REXSL framework, the XSLT style table is used to convert the data transmitted by the server to the format that can be displayed on the client.
Below is a simple example of converting XML data to HTML using the XSLT style table:
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamSource;
import javax.xml.transform.stream.StreamResult;
public class XSLTExample {
public static void main(String[] args) throws Exception {
// Define XML data
String xml = "<data><name>John</name><age>25</age></data>";
// Define the XSLT style table
String xslt = "<xsl:stylesheet xmlns:xsl='http://www.w3.org/1999/XSL/Transform' version='1.0'>"+
"<xsl:template match='/data'>"+
"<html>"+
"<body>"+
"<h1><xsl:value-of select='name'/></h1>"+
"<p>Age: <xsl:value-of select='age'/></p>"+
"</body>"+
"</html>"+
"</xsl:template>"+
"</xsl:stylesheet>";
// Create transformerFactory instance
TransformerFactory factory = TransformerFactory.newInstance();
// Create a transformer instance
Transformer transformer = factory.newTransformer(new StreamSource(xslt));
// Define the input source and output results
StreamSource xmlInput = new StreamSource(new StringReader(xml));
StreamResult htmlOutput = new StreamResult(System.out);
// Use the XSLT style table to convert
transformer.transform(xmlInput, htmlOutput);
}
}
In the above example, we define a XML data containing names and age.Then, we used the XSLT style table to define a template and specify how to convert these data to the HTML page.Finally, we use the Java code to pass the XML data and XSLT style tables to the Transformer instance and output the conversion result to the console.
In the REXSL framework, similar principles are used to transmit data from the server to the client in XML format, and use the XSLT style table to convert the format required by the client.In this way, the REXSL framework realizes the development of rich client applications.
To sum up, the Java class library technology principle of the REXSL framework is based on the conversion process of XSLT style tables and XML data.By defining the appropriate XSLT style table, the REXSL framework can convert the data transmitted by the server to the format that can be displayed by the client.This technical principle provides convenience for the development of rich client applications.
