How to provide streaming in J2EE web application?

Hi Friends,
I want to build web application which will provide streaming of data.
This data may be in raw data, binary, files, audio, video etc. As we are using HTTP protocol for web application, then how to do streaming between server and client using HTTP protocol i.e in request response manner.
If we want to send response of ~1 GB to client using servlet, then it's good idea that we should use data streaming concept. For data streaming if we use request/response architecture then servlet should send ~1 GB data in one go. Is it possible? And if we use data streaming tech. Is it our responsibility to do framing, maintaining data sequence, encoding/decoding, merge data and then store on client side?
Any help will be appreciated.
Thanks

One idea is RTP
http://java.sun.com/products/java-media/jmf/2.1.1/solutions/

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How a J2EE web application access CR reports stored on the CR Server XI?

Hi,
I'll be working on some crystal report templates that will eventually be hosted/publish on the CR Server XI.
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1. How my J2EE web application access those reports?
2. Do my web application uses some CR API for the connectivity and integration?
3. What will happen to the database connectivity of the report template? since the report are created locally.
4. Can the report template be edited/updated on the server?
5. How the CR XI login functionality be involve in the integration (web application ---> CR Server XI)?
6. Is the J2EE web application be deployed on similar web/application server where the CR Server XI resides?
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Regards,
Rulix Batistil
Genesis Networks Pte Ltd
www.gen-net.com.sg

1) Your application connects via the Java SDK using the appropriate JAR files.
2) It can. You can set the database information at runtime or use the already populated information from Enterprise.
3) Same as 2. Typically when you save the report to Enterprise you set up the database information there so that it runs against the database you want without prompting. You can change this via code to hit whatever equivalent database you want.
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5) You will log in via code. The information on how to do so is in the SDK documentation, which I will link.
6) It can be deployed to the same machine as CR Server, though we recommend against that. Typically you will want to deploy it to a seperate web server and allow it to connect to the CR Server across the network.
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[BOE Developer Library|http://devlibrary.businessobjects.com/BusinessObjectsXIR2SP2/en/devsuite.htm]
You will find the Java SDK information under the BusinessObjects Enterprise SDK section.
Best Regards,
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Hi
See this Thread
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Re: Servlet not getting loaded when put in a jar file
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Hello all,
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Well if you need your Forms accesible from a browser you don't need to convert them to Java - you just use Forms on the Web - http://otn.oracle.com/formsupgrade
If you still want to convert to Java have a look at the Forms page for more info:
http://otn.oracle.com/products/forms
and also here:
http://www.oracle.com/technology/products/jdev/collateral/4gl/formsdesignerj2ee.html

Help:How can I run the J2EE Client Application? Thanks

Help:How can I run the J2EE Client Application that will access the remote J2EE1.4 application server which runs on another host computer?
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The following are the code of the enterprise java bean and it's home interface .
The client code is also provided.
The enterprise java bean:
package converter;
import java.rmi.RemoteException;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;
import java.math.*;
public class ConverterBean implements SessionBean {
BigDecimal yenRate = new BigDecimal("121.6000");
BigDecimal euroRate = new BigDecimal("0.0077");
public ConverterBean() {
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BigDecimal result = dollars.multiply(yenRate);
return result.setScale(2, BigDecimal.ROUND_UP);
public BigDecimal yenToEuro(BigDecimal yen) {
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return result.setScale(2, BigDecimal.ROUND_UP);
public void ejbCreate() {
public void ejbRemove() {
public void ejbActivate() {
public void ejbPassivate() {
public void setSessionContext(SessionContext sc) {
The bean's remote home interface :
package converter;
import java.rmi.RemoteException;
import javax.ejb.CreateException;
import javax.ejb.EJBHome;
public interface ConverterHome extends EJBHome {
Converter create() throws RemoteException, CreateException;
The bean's remote interface:
package converter;
import javax.ejb.EJBObject;
import java.rmi.RemoteException;
import java.math.*;
public interface Converter extends EJBObject {
public BigDecimal dollarToYen(BigDecimal dollars) throws RemoteException;
public BigDecimal yenToEuro(BigDecimal yen) throws RemoteException;
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import converter.Converter;
import converter.ConverterHome;
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import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
import java.math.BigDecimal;
public class ConverterClient {
public static void main(String[] args) {
try {
Context initial = new InitialContext();
System.setProperty("java.naming.factory.initial","org.jnp.interfaces.NamingContextFactory");
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(ConverterHome) PortableRemoteObject.narrow(objref,
ConverterHome.class);
Converter currencyConverter = home.create();
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BigDecimal amount = currencyConverter.dollarToYen(param);
System.out.println(amount);
amount = currencyConverter.yenToEuro(param);
System.out.println(amount);
System.exit(0);
} catch (Exception ex) {
System.err.println("Caught an unexpected exception!");
ex.printStackTrace();
}

Surprisingly I find an upsurge in the number of posts with this same problem. I recently found a post which gave a nice link for this. Follow the steps and it should help:
http://docs.sun.com/source/819-0079/dgacc.html#wp1022105

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hi, i am a newbie to portal content development. My team have developed a J2EE web application to be run on the portal. Is it possible to consume a Portal Service from J2EE web application? If possible, deeply appreciate if you could provide some guidelines. Kindly advise. Thanks.

Hi Theodore Yu,
You need to expose your portal service as a webservice to consume it in a j2ee web application.
For exposing a portal service to webservice check this link
http://help.sap.com/saphelp_nw04/helpdata/en/43/cb213e578c0262e10000000a11466f/frameset.htm
Thanks,
Padmaja
Edited by: Padmaja Pedapudi on May 20, 2008 2:03 PM

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Hi friends,
<br>
I had worked with Oracle9i 9.0.3 . But it's my first experience with Oracle 10g . I have installed Oracle 10g Infrastructure , Metadata Repository and one Middle tier - Forms and i hope i have followed The Oracle 10g installation guide Properly. Anyway installation is successful.
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<br>
Deployment failed: Nested exception
Root Cause: deploy failed!: ; nested exception is:
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<br>
<br>
where JmsReceiverMdb is the deployment file containing the message driven beans.
<br>
Thanks in advance,
paskal

Hi,
Thanks for responding . I am sending the file contents of ejb-jar.xml, orion-ejb-jar.xml, jms.xml.
Could you also check whether dtds versions of 10g and 9i in these xmls are conflicting? If you can specify your email-id i can send these file as attachments.
Hope you could strike the right spot.
ejb-jar.xml
<?xml version = '1.0' encoding = 'windows-1252'?>
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
<ejb-jar>
<enterprise-beans>
<session>
<description>Session Bean ( Stateless )</description>
<display-name>spomPmConfigSSB</display-name>
<ejb-name>spomPmConfigSSB</ejb-name>
<home>jnipackage.spomPmConfigSSBHome</home>
<remote>jnipackage.spomPmConfigSSB</remote>
<ejb-class>jnipackage.impl.spomPmConfigSSBBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
</session>
<message-driven>
<description>Message Driven Bean</description>
<display-name>JmsReceiverMdb</display-name>
<ejb-name>JmsReceiverMdb</ejb-name>
<ejb-class>jnipackage.impl.JmsReceiverMdbBean</ejb-class>
<transaction-type>Container</transaction-type>
<acknowledge-mode>Auto-acknowledge</acknowledge-mode>
<resource-ref>
<res-ref-name>jms/alarmTopicConnectionFactory</res-ref-name>
<res-type>javax.jms.TopicConnectionFactory</res-type>
<res-auth>Container</res-auth>
<res-sharing-scope>Shareable</res-sharing-scope>
</resource-ref>
<resource-env-ref>
<resource-env-ref-name>jms/alarmTopic</resource-env-ref-name>
<resource-env-ref-type>javax.jms.Topic</resource-env-ref-type>
</resource-env-ref>
</message-driven>
</enterprise-beans>
<assembly-descriptor>
<container-transaction>
<method>
<ejb-name>JmsReceiverMdb</ejb-name>
<method-name>*</method-name>
</method>
<trans-attribute>Required</trans-attribute>
</container-transaction>
<container-transaction>
<method>
<ejb-name>spomPmConfigSSB</ejb-name>
<method-name>*</method-name>
</method>
<trans-attribute>Supports</trans-attribute>
</container-transaction>
</assembly-descriptor>
</ejb-jar>
Orion-ejb-jar.xml
<?xml version = '1.0' encoding = 'windows-1252'?>
<!DOCTYPE orion-ejb-jar PUBLIC "-//Evermind//DTD Enterprise JavaBeans 1.1 runtime//EN" "http://xmlns.oracle.com/ias/dtds/orion-ejb-jar.dtd">
<orion-ejb-jar>
<enterprise-beans>
<message-driven-deployment name="JmsReceiverMdb" max-instances="100" min-instances="0">
<resource-ref-mapping name="jms/alarmTopicConnectionFactory"/>
</message-driven-deployment>
<session-deployment name="spomPmConfigSSB"/>
</enterprise-beans>
<assembly-descriptor>
<default-method-access>
<security-role-mapping impliesAll="true" name="<default-ejb-caller-role>"/>
</default-method-access>
</assembly-descriptor>
</orion-ejb-jar>
jms.xml
<?xml version="1.0" standalone='yes'?>
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<jms-server port="9127">

<queue name="Demo Queue" location="jms/demoQueue">
<description>A dummy queue</description>
</queue>

<topic name="Demo Topic" location="jms/demoTopic">
<description>A dummy topic</description>
</topic>

<topic name="AlarmQueue" location="jms/alarmTopic">
<description>A topic</description>
</topic>
<topic name="FaultTextQueue" location="jms/faultTextTopic">
<description>A topic</description>
</topic>
<topic name="FaultTopologyQueue" location="jms/faultTopologyTopic">
<description>A topic</description>
</topic>

<log>
<file path="../log/jms.log"/>

</log>
<queue name="jms/OracleSyndicateQueue" location="jms/OracleSyndicateQueue">
<description>Oracle Syndication Services Queue</description>
</queue>

<queue-connection-factory location="jms/OracleSyndicateQueueConnectionFactory"/>
<queue name="jms/OracleUddiReplicationQueue"
location="jms/OracleUddiReplicationQueue">
<description>Queue for replication scheduler</description>
</queue>

<queue-connection-factory location="jms/OracleUddiReplicationQueueConnectionFactory"/>
<queue name="jms/OracleWebClippingQueue"
location="jms/OracleWebClippingQueue">
<description>Queue for Web Clipping</description>
</queue>

<queue-connection-factory location="jms/OracleWebClippingQueueConnectionFactory"/>
</jms-server>

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hi
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Hi,
I want to send sms from web application to mobile phones at the time of registration. Its verymuch greatful to me, if you let me know, how to send from jsp to mobile. because from your post, i got, you already know about sending sms from jsp to mobile.
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[email protected]
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How to provide streaming in J2EE web application?

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