Understand the original JSR 173 stream API for XML in the Java class library.
JSR 173 Stream API For XML Reference Implementation framework is a Java class library for XML processing.It provides a set of interfaces and classes that enable developers to easily read, write and operate XML documents.This framework is based on XML flow interpreters and generators, which can achieve efficient XML processing.
Using the JSR 173 stream API for XML, the developer can use the XML document as an input stream for analysis, or write the XML information into the output stream.In addition, it also provides the function of processing and modifying XML documents, such as creating, deleting and modifying element nodes, attribute nodes, etc.
Below is a simple Java code example, demonstrating how to use the JSR 173 stream API for XML to resolve a XML document:
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
public class XMLParserExample {
public static void main(String[] args) {
try {
// Create XML input streaming factory
XMLInputFactory factory = XMLInputFactory.newInstance();
// Create XML input stream reader according to XML document
XMLStreamReader reader = factory.createXMLStreamReader(new FileInputStream("example.xml"));
// Start parsing XML document
while (reader.hasNext()) {
int event = reader.next();
if (event == XMLStreamReader.START_ELEMENT) {
// Treat the starting element node
String elementName = reader.getLocalName();
System.out.println ("Starting element node:" + ElementName);
} else if (event == XMLStreamReader.END_ELEMENT) {
// Treatment the end element node
String elementName = reader.getLocalName();
System.out.println ("Ending element node:" + ElementName);
} else if (event == XMLStreamReader.CHARACTERS) {
// Treatment character data
String text = reader.getText().trim();
if (!text.isEmpty()) {
System.out.println ("character data:" + text);
}
}
}
// Close the reader
reader.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (XMLStreamException e) {
e.printStackTrace();
}
}
}
In this example, we use XMLINPUTFACTORY to create the XMLSTREAMREADER object, and then traverse the XML document node by calling the Next () method.According to different events, we can perform corresponding operations, such as processing starting element nodes, ending element nodes, and character data.
In summary, the JSR 173 stream API for XML reference framework is a powerful Java class library that provides high -efficiency processing and operation functions of XML documents.By using this framework, developers can easily analyze, generate, and modify XML documents to meet various XML processing needs.
