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Easy Redis Java client and Real-Time Data Platform. Valkey compatible. Sync/Async/RxJava3/Reactive API. Client side caching. Over 50 Redis based Java objects and services: JCache API, Apache Tomcat, Hibernate, Spring, Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Scheduler, RPC
package com.fasterxml.jackson.databind.ext;
import java.io.IOException;
import java.io.StringWriter;
import javax.xml.XMLConstants;
import javax.xml.transform.*;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Node;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatVisitorWrapper;
import com.fasterxml.jackson.databind.ser.std.StdSerializer;
@SuppressWarnings("serial")
public class DOMSerializer extends StdSerializer
{
protected final TransformerFactory transformerFactory;
public DOMSerializer() {
super(Node.class);
try {
transformerFactory = TransformerFactory.newInstance();
transformerFactory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
// 22-Mar-2023, tatu: [databind#3837] add these 2 settings further
setTransformerFactoryAttribute(transformerFactory, XMLConstants.ACCESS_EXTERNAL_DTD, "");
setTransformerFactoryAttribute(transformerFactory, XMLConstants.ACCESS_EXTERNAL_STYLESHEET, "");
} catch (Exception e) {
throw new IllegalStateException("Could not instantiate `TransformerFactory`: "+e.getMessage(), e);
}
}
@Override
public void serialize(Node value, JsonGenerator g, SerializerProvider provider)
throws IOException
{
try {
Transformer transformer = transformerFactory.newTransformer();
transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
transformer.setOutputProperty(OutputKeys.INDENT, "no");
StreamResult result = new StreamResult(new StringWriter());
transformer.transform(new DOMSource(value), result);
g.writeString(result.getWriter().toString());
} catch (TransformerConfigurationException e) {
throw new IllegalStateException("Could not create XML Transformer for writing DOM `Node` value: "+e.getMessage(), e);
} catch (TransformerException e) {
provider.reportMappingProblem(e, "DOM `Node` value serialization failed: %s", e.getMessage());
}
}
/**
* @deprecated Since 2.15
*/
@Deprecated
@Override
public JsonNode getSchema(SerializerProvider provider, java.lang.reflect.Type typeHint) {
// Well... it is serialized as String
return createSchemaNode("string", true);
}
@Override
public void acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor, JavaType typeHint) throws JsonMappingException {
if (visitor != null) visitor.expectAnyFormat(typeHint);
}
private static void setTransformerFactoryAttribute(final TransformerFactory transformerFactory,
final String name, final Object value) {
try {
transformerFactory.setAttribute(name, value);
} catch (Exception e) {
System.err.println("[DOMSerializer] Failed to set TransformerFactory attribute: " + name);
}
}
}
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