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narkisr on 08/11/08

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Serialization of Java object to AMF

/ Published in: Java

A working example that uses BlaszDS in order to serialize Java object into AMF (this code should be cleaned up a bit), in order for it to compile and work it is required to add flex-messaging-core.jar and flex-messaging-common.jar to the classpath.

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package amfdemo;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.HashMap;

import flex.messaging.io.SerializationContext;
import flex.messaging.io.amf.Amf3Input;
import flex.messaging.io.amf.Amf3Output;
import javax.xml.parsers.DocumentBuilderFactory;

public class AmfTest {

public static void main(String[] args) {
        try {

SerializationContext context = getSerializationContext();

TestBean testBean = new TestBean();
            testBean.setByte(new Byte((byte) 9));
            testBean.setBigDecimal(new BigDecimal("9.9"));
            testBean.setBoolean(new Boolean("true"));
            testBean.setCharacter(new Character('c'));
            testBean.setCalendar(Calendar.getInstance());
            testBean.setDate(Calendar.getInstance().getTime());
            testBean.setDouble(new Double(999.9));
            testBean.setFloat(new Float(99.9f));
            testBean.setInteger(new Integer("999"));
            testBean.setList(new ArrayList());
            testBean.setLong(new Long(99999));
            testBean.setMap(new HashMap());
            testBean.setDocument(DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument());
            testBean.setShort(new Short("99"));
            testBean.setString("test");

ByteArrayOutputStream bout = new ByteArrayOutputStream();
            Amf3Output amf3Output = new Amf3Output(context);
            amf3Output.setOutputStream(bout);
            amf3Output.writeObject(testBean);
            amf3Output.flush();
            amf3Output.close();

InputStream bIn = new ByteArrayInputStream(bout.toByteArray());
            Amf3Input amf3Input = new Amf3Input(context);
            amf3Input.setInputStream(bIn);
            TestBean o = (TestBean) amf3Input.readObject();

System.out.println(o.getByte().equals(testBean.getByte()));
            System.out.println(o.getBigDecimal().equals(testBean.getBigDecimal()));
            System.out.println(o.getBoolean().equals(testBean.getBoolean()));
            System.out.println(o.getCharacter().equals(testBean.getCharacter()));
            System.out.println(o.getCalendar().equals(testBean.getCalendar()));
            System.out.println(o.getDate().equals(testBean.getDate()));
            System.out.println(o.getDouble().equals(testBean.getDouble()));
            System.out.println(o.getFloat().equals(testBean.getFloat()));
            System.out.println(o.getInteger().equals(testBean.getInteger()));
            System.out.println(o.getLong().equals(testBean.getLong()));
            System.out.println(o.getString().equals(testBean.getString()));

} catch (Exception e) {
            e.printStackTrace();
        }
    }

public static SerializationContext getSerializationContext() {

//Threadlocal SerializationContent
        SerializationContext serializationContext = SerializationContext.getSerializationContext();
        serializationContext.enableSmallMessages = true;
        serializationContext.instantiateTypes = true;
        //use _remoteClass field
        serializationContext.supportRemoteClass = true;
        //false  Legacy Flex 1.5 behavior was to return a java.util.Collection for Array
        //ture New Flex 2+ behavior is to return Object[] for AS3 Array
        serializationContext.legacyCollection = false;

serializationContext.legacyMap = false;
        //false Legacy flash.xml.XMLDocument Type
        //true New E4X XML Type
        serializationContext.legacyXMLDocument = false;

//determines whether the constructed Document is name-space aware
        serializationContext.legacyXMLNamespaces = false;
        serializationContext.legacyThrowable = false;
        serializationContext.legacyBigNumbers = false;

serializationContext.restoreReferences = false;
        serializationContext.logPropertyErrors = false;
        serializationContext.ignorePropertyErrors = true;
        return serializationContext;

/*
    serializationContext.enableSmallMessages = serialization.getPropertyAsBoolean(ENABLE_SMALL_MESSAGES, true);
    serializationContext.instantiateTypes = serialization.getPropertyAsBoolean(INSTANTIATE_TYPES, true);
    serializationContext.supportRemoteClass = serialization.getPropertyAsBoolean(SUPPORT_REMOTE_CLASS, false);
    serializationContext.legacyCollection = serialization.getPropertyAsBoolean(LEGACY_COLLECTION, false);
    serializationContext.legacyMap = serialization.getPropertyAsBoolean(LEGACY_MAP, false);
    serializationContext.legacyXMLDocument = serialization.getPropertyAsBoolean(LEGACY_XML, false);
    serializationContext.legacyXMLNamespaces = serialization.getPropertyAsBoolean(LEGACY_XML_NAMESPACES, false);
    serializationContext.legacyThrowable = serialization.getPropertyAsBoolean(LEGACY_THROWABLE, false);
    serializationContext.legacyBigNumbers = serialization.getPropertyAsBoolean(LEGACY_BIG_NUMBERS, false);
    boolean showStacktraces = serialization.getPropertyAsBoolean(SHOW_STACKTRACES, false);
    if (showStacktraces && Log.isWarn())
    log.warn("The " + SHOW_STACKTRACES + " configuration option is deprecated and non-functional. Please remove this from your configuration file.");
    serializationContext.restoreReferences = serialization.getPropertyAsBoolean(RESTORE_REFERENCES, false);
    serializationContext.logPropertyErrors = serialization.getPropertyAsBoolean(LOG_PROPERTY_ERRORS, false);
    serializationContext.ignorePropertyErrors = serialization.getPropertyAsBoolean(IGNORE_PROPERTY_ERRORS, true);
     */
    }
}

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