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Added support to import XML packet to XML Document object.

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#story[820]
This commit is contained in:
Alistair McIntyre
2017-04-25 17:38:26 +12:00
parent 00c1a89f58
commit 8cbd1cc4aa
1 changed files with 40 additions and 7 deletions
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src/main/java/seng302/models/parsers/StreamParser.java
+40 -7
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@@ -1,25 +1,24 @@
package seng302.models.parsers;
import org.w3c.dom.Element;
import org.w3c.dom.Document;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.ArrayList;
import java.io.StringReader;
import java.util.Arrays;
import java.util.Map;
/**
* Created by kre39 on 23/04/17.
*/
public class StreamParser {
static void parsePacket(StreamPacket packet) {
static void parsePacket(StreamPacket packet) {
switch (packet.getType()){
case HEARTBEAT:
extractHeartBeat(packet);
@@ -74,7 +73,41 @@ public class StreamParser {
}
private static void extractXmlMessage(StreamPacket packet){
static void extractXmlMessage(StreamPacket packet){
byte[] payload = packet.getPayload();
String xmlMessage = "";
ByteArrayInputStream payloadStream = new ByteArrayInputStream(payload);
//Bunch of data we don't want (Message Version Number, AckNumber, Timestamp)
payloadStream.skip(9);
int xmlMessageSubType = payloadStream.read();
payloadStream.skip(2);
//checks the length of the xml message itself
int xmlMessageLength = payloadStream.read() | payloadStream.read() << 8;
//Converts XML message to string to be parsed
int currentChar;
while (payloadStream.available() > 0 && (currentChar = payloadStream.read()) != 0) {
xmlMessage += (char)currentChar;
}
//Create XML document Object
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = null;
try {
db = dbf.newDocumentBuilder();
Document doc = db.parse(new InputSource(new StringReader(xmlMessage)));
// TODO: 25/04/17 ajm412: Check that the object matches expected structure and return Document object.
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}