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2010-06-01T05:18:07Z

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в 17:44, 31 мая 2010

2010-05-31T17:44:27Z

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== Debugging utilities for XmlStreamReader ==



<source lang="java">
/* Copyright 2004 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Revised from xml beans
import javax.xml.stream.XMLStreamReader;
/**
* debugging utilities for XmlStreamReader
*/
public final class XmlStreamUtils {
public static String printEvent(XMLStreamReader xmlr) {
StringBuffer b = new StringBuffer();
b.append("EVENT:[" + xmlr.getLocation().getLineNumber() + "]["
+ xmlr.getLocation().getColumnNumber() + "] ");
b.append(getName(xmlr.getEventType()));
b.append(" [");
switch (xmlr.getEventType()) {
case XMLStreamReader.START_ELEMENT:
b.append("<");
printName(xmlr, b);
for (int i = 0; i < xmlr.getNamespaceCount(); i++) {
b.append(" ");
String n = xmlr.getNamespacePrefix(i);
if ("xmlns".equals(n)) {
b.append("xmlns=\"" + xmlr.getNamespaceURI(i) + "\"");
} else {
b.append("xmlns:" + n);
b.append("=\"");
b.append(xmlr.getNamespaceURI(i));
b.append("\"");
}
}
for (int i = 0; i < xmlr.getAttributeCount(); i++) {
b.append(" ");
printName(xmlr.getAttributePrefix(i), xmlr.getAttributeNamespace(i), xmlr
.getAttributeLocalName(i), b);
b.append("=\"");
b.append(xmlr.getAttributeValue(i));
b.append("\"");
}
b.append(">");
break;
case XMLStreamReader.END_ELEMENT:
b.append("</");
printName(xmlr, b);
for (int i = 0; i < xmlr.getNamespaceCount(); i++) {
b.append(" ");
String n = xmlr.getNamespacePrefix(i);
if ("xmlns".equals(n)) {
b.append("xmlns=\"" + xmlr.getNamespaceURI(i) + "\"");
} else {
b.append("xmlns:" + n);
b.append("=\"");
b.append(xmlr.getNamespaceURI(i));
b.append("\"");
}
}
b.append(">");
break;
case XMLStreamReader.SPACE:
case XMLStreamReader.CHARACTERS:
// b.append(xmlr.getText());
int start = xmlr.getTextStart();
int length = xmlr.getTextLength();
b.append(new String(xmlr.getTextCharacters(), start, length));
break;
case XMLStreamReader.PROCESSING_INSTRUCTION:
String target = xmlr.getPITarget();
if (target == null)
target = "";
String data = xmlr.getPIData();
if (data == null)
data = "";
b.append("<?");
b.append(target + " " + data);
b.append("?>");
break;
case XMLStreamReader.CDATA:
b.append("<![CDATA[");
if (xmlr.hasText())
b.append(xmlr.getText());
b.append("]]>");
break;
case XMLStreamReader.ruMENT:
b.append("");
break;
case XMLStreamReader.ENTITY_REFERENCE:
b.append(xmlr.getLocalName() + "=");
if (xmlr.hasText())
b.append("[" + xmlr.getText() + "]");
break;
case XMLStreamReader.START_DOCUMENT:
b.append("<?xml");
b.append(" version="" + xmlr.getVersion() + """);
b.append(" encoding="" + xmlr.getCharacterEncodingScheme() + """);
if (xmlr.isStandalone())
b.append(" standalone="yes"");
else
b.append(" standalone="no"");
b.append("?>");
break;
}
b.append("]");
return b.toString();
}
private static void printName(String prefix, String uri, String localName, StringBuffer b) {
if (uri != null && !("".equals(uri)))
b.append("["" + uri + ""]:");
if (prefix != null && !("".equals(prefix)))
b.append(prefix + ":");
if (localName != null)
b.append(localName);
}
private static void printName(XMLStreamReader xmlr, StringBuffer b) {
if (xmlr.hasName()) {
String prefix = xmlr.getPrefix();
String uri = xmlr.getNamespaceURI();
String localName = xmlr.getLocalName();
printName(prefix, uri, localName, b);
}
}
public static String getName(int eventType) {
switch (eventType) {
case XMLStreamReader.START_ELEMENT:
return "START_ELEMENT";
case XMLStreamReader.END_ELEMENT:
return "END_ELEMENT";
case XMLStreamReader.PROCESSING_INSTRUCTION:
return "PROCESSING_INSTRUCTION";
case XMLStreamReader.CHARACTERS:
return "CHARACTERS";
case XMLStreamReader.SPACE:
return "SPACE";
case XMLStreamReader.ruMENT:
return "COMMENT";
case XMLStreamReader.START_DOCUMENT:
return "START_DOCUMENT";
case XMLStreamReader.END_DOCUMENT:
return "END_DOCUMENT";
case XMLStreamReader.ENTITY_REFERENCE:
return "ENTITY_REFERENCE";
case XMLStreamReader.ATTRIBUTE:
return "ATTRIBUTE";
case XMLStreamReader.DTD:
return "DTD";
case XMLStreamReader.CDATA:
return "CDATA";
case XMLStreamReader.NAMESPACE:
return "NAMESPACE";
}
return "UNKNOWN_EVENT_TYPE";
}
public static int getType(String val) {
if (val.equals("START_ELEMENT"))
return XMLStreamReader.START_ELEMENT;
if (val.equals("SPACE"))
return XMLStreamReader.SPACE;
if (val.equals("END_ELEMENT"))
return XMLStreamReader.END_ELEMENT;
if (val.equals("PROCESSING_INSTRUCTION"))
return XMLStreamReader.PROCESSING_INSTRUCTION;
if (val.equals("CHARACTERS"))
return XMLStreamReader.CHARACTERS;
if (val.equals("COMMENT"))
return XMLStreamReader.ruMENT;
if (val.equals("START_DOCUMENT"))
return XMLStreamReader.START_DOCUMENT;
if (val.equals("END_DOCUMENT"))
return XMLStreamReader.END_DOCUMENT;
if (val.equals("ATTRIBUTE"))
return XMLStreamReader.ATTRIBUTE;
if (val.equals("DTD"))
return XMLStreamReader.DTD;
if (val.equals("CDATA"))
return XMLStreamReader.CDATA;
if (val.equals("NAMESPACE"))
return XMLStreamReader.NAMESPACE;
return -1;
}
}</source>



== XMLStreamReader with events ==



<source lang="java">
import java.io.FileInputStream;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamReader;
public class EntityReferenceTest {
public static void main(String[] args) throws Exception {
XMLInputFactory inputFactory = XMLInputFactory.newInstance();
inputFactory.setProperty(XMLInputFactory.IS_COALESCING, Boolean.TRUE);
inputFactory.setProperty(XMLInputFactory.IS_REPLACING_ENTITY_REFERENCES, Boolean.TRUE);
XMLStreamReader reader = inputFactory.createXMLStreamReader(new FileInputStream("e.xml"));
while (reader.hasNext()) {
int event = reader.next();
if (event == XMLStreamConstants.CHARACTERS)
System.out.println(reader.getText());
else if (event == XMLStreamConstants.ENTITY_REFERENCE) {
System.out.println("en: " + reader.getLocalName());
System.out.println("er: " + reader.getText());
}
}
inputFactory.setProperty(XMLInputFactory.IS_REPLACING_ENTITY_REFERENCES, Boolean.FALSE);
reader = inputFactory.createXMLStreamReader(new FileInputStream("e.xml"));
while (reader.hasNext()) {
int event = reader.next();
if (event == XMLStreamConstants.CHARACTERS)
System.out.println(reader.getText());
else if (event == XMLStreamConstants.ENTITY_REFERENCE) {
System.out.println("en: " + reader.getLocalName());
System.out.println("er: " + reader.getText());
}
}
}
}</source>

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Admin: 1 версия

в 17:44, 31 мая 2010