server/XMLReader/XMLPacketMaker.java

import java.io.*;
import java.util.ArrayList;

import org.xml.sax.*;

import javax.xml.parsers.SAXParserFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;

// Paul Mutton, pjm2@ukc.ac.uk

// XMLPacketMaker - Creates an XMLPacket object.
public class XMLPacketMaker extends HandlerBase {

    // No-args constructor.  Generally not used.
    public XMLPacketMaker () {
        this.xml = "<packet></packet>";
    }

    // Constructor for accepting XML input.
    public XMLPacketMaker (String xml) {
        this.xml = xml;
    }

    public XMLPacket createXMLPacket() {

        // Create the XMLPacket to store values in.
        XMLPacket packet = new XMLPacket();

        // Use the default (non-validating) parser
        SAXParserFactory factory = SAXParserFactory.newInstance();
        try {

            // Parse the input
            SAXParser saxParser = factory.newSAXParser();
            saxParser.parse(xml, new XMLPacketParser(packet));

        }
        catch (IOException e){
            System.out.println("IOException: "+e);
        }
        catch (Throwable t) {
            System.out.println("XMLPacketMaker - I just received an XML packet that did not contain valid XML.");
            //System.out.println(e);
            t.printStackTrace();
            return null;
        }
        
        return packet;
    }
    
    String xml;
}
Revision:	1.12
Committed:	Fri Nov 17 12:44:47 2000 UTC (24 years ago) by pjm2
Branch:	MAIN
Changes since 1.11:	+6 -6 lines
Log Message:	Altered test.xml to have a declaration of the file format. XMLPacketMaker has slightly different error handling.
#	User	Rev	Content
1	pjm2	1.3	import java.io.*;
2			import java.util.ArrayList;
3
4			import org.xml.sax.*;
5
6	pjm2	1.7	import javax.xml.parsers.SAXParserFactory;
7			import javax.xml.parsers.ParserConfigurationException;
8			import javax.xml.parsers.SAXParser;
9	pjm2	1.3
10	pjm2	1.7	// Paul Mutton, pjm2@ukc.ac.uk
11	pjm2	1.3
12	pjm2	1.7	// XMLPacketMaker - Creates an XMLPacket object.
13	pjm2	1.3	public class XMLPacketMaker extends HandlerBase {
14	pjm2	1.5
15	pjm2	1.10	// No-args constructor. Generally not used.
16	pjm2	1.5	public XMLPacketMaker () {
17	pjm2	1.10	this.xml = "<packet></packet>";
18	pjm2	1.5	}
19
20	pjm2	1.10	// Constructor for accepting XML input.
21			public XMLPacketMaker (String xml) {
22			this.xml = xml;
23	pjm2	1.5	}
24
25	pjm2	1.10	public XMLPacket createXMLPacket() {
26
27			// Create the XMLPacket to store values in.
28			XMLPacket packet = new XMLPacket();
29	pjm2	1.3
30			// Use the default (non-validating) parser
31			SAXParserFactory factory = SAXParserFactory.newInstance();
32			try {
33	pjm2	1.5
34	pjm2	1.3	// Parse the input
35			SAXParser saxParser = factory.newSAXParser();
36	pjm2	1.10	saxParser.parse(xml, new XMLPacketParser(packet));
37	pjm2	1.5
38	pjm2	1.10	}
39	pjm2	1.12	catch (IOException e){
40			System.out.println("IOException: "+e);
41			}
42			catch (Throwable t) {
43	pjm2	1.11	System.out.println("XMLPacketMaker - I just received an XML packet that did not contain valid XML.");
44	pjm2	1.12	//System.out.println(e);
45			t.printStackTrace();
46	pjm2	1.11	return null;
47	pjm2	1.3	}
48	pjm2	1.10
49			return packet;
50	pjm2	1.3	}
51	pjm2	1.8
52	pjm2	1.10	String xml;
53	pjm2	1.3	}