There are two examples below: one is a standard STATELESSBEAN, one is simplified STATELESSBEAN
Calculator.java // Calculator interface: plus, reduce
Package Org.jboss.tutorial.Stateless.Bean;
Public Interface Calculator
{
INT Add (int X, int y);
Int subtract (int X, int y);
}
CalculatorBean.java
Package Org.jboss.tutorial.Stateless.Bean;
Import javax.ejb.stateless;
@StateLess // Tag CalculatorBean is the implementation of local and remote interfaces for local and remote interfaces
Public Class CalculatorBean Implements CalculatorRemote, CalculatorLocal
{
Public Int Add (int X, int y)
{
Return X Y;
}
Public int subtract (int X, int y)
{
Return X - Y;
}
}
CalculatorLocal.java
Package Org.jboss.tutorial.Stateless.Bean;
Import javax.ejb.local;
@Local // Mark is a local interface, inheriting the calculator interface
Public Interface CalculatorLocal Extends Calculator
{
}
CalculatorRemote.java
Package Org.jboss.tutorial.Stateless.Bean;
Import javax.ejb.remote;
@Remote / / Mark as remote interface, inherited the calculator interface
Public Interface CalculatorRemote Extends Calculator
{
}
Client
Client.java
Package Org.jboss.tutorial.Stateless.Client;
Import org.jboss.tutorial.Stateless.Bean.calculator;
Import org.jboss.tutorial.Stateless.Bean.calculatorRemote;
Import javax.naming.initialcontext;
Public Class Client
{
Public static void main (string [] args) Throws Exception
{
InitialContext CTX = New InitialContext ();
/ / Find remote interface
Calculator Calculator = (Calculator) ctx.lookup (CalculatorRemote.class.getName ());
System.out.Println ("1 1 =" Calculator.Add (1, 1));
System.out.println ("1 - 1 =" Calculator.Subtract (1, 1));
}
}
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STATELESSBEAN features can be implemented in just three programs.
Calculator.java
Package org.jboss.tutorial.stateless.bean; import javax.ejb.remote
@Remote / / Tag calculator as a remote interface directly
Public Interface Calculator
{
INT Add (int X, int y);
Int subtract (int X, int y);
}
CalculatorBean.java
Package Org.jboss.tutorial.Stateless.Bean;
Import javax.ejb.stateless;
@StateLess
Public Class CalculatorBean Implements Calculator // Really implemented a calculator interface
{
Public Int Add (int X, int y)
{
Return X Y;
}
Public int subtract (int X, int y)
{
Return X - Y;
}
}
Client:
Client.java
Package Org.jboss.tutorial.Stateless.Client;
Import org.jboss.tutorial.Stateless.Bean.calculator;
Import javax.naming.initialcontext;
Public Class Client
{
Public static void main (string [] args) Throws Exception
{
InitialContext CTX = New InitialContext ();
Calculator Calculator = (Calculator) ctx.lookup (Calculator.class.getName ());
// Just look up the interface marked as Remote.
System.out.Println ("1 1 =" Calculator.Add (1, 1));
System.out.println ("1 - 1 =" Calculator.Subtract (1, 1));
}
}
There is no log4j.properties in jboss-ejb-3.0_preview_5.zip, there is no such thing as a lack of appender
Log4j.properties
Log4j.Appender.r = org.apache.log4j.rollingfileappender
Log4j.Appender.r.file = record.log
Log4j.Appender.r.Layout = org.apache.log4j.patternlayout
Log4j.Appender.r.Layout.conversionPattern =% p% d {hh: mm: ss}% T% c {1} -% M% N
Log4j.Appender.r.maxbackupindex = 1
Log4j.Appender.r.maxfilesize = 100kb
Log4j.Appender.stdout.Layout = Org.apache.log4j.patternlayout
Log4j.Appender.stdout.Layout.conversionPattern =% 5P [% T] (% F:% L) -% M% N
Log4j.appender.stdout = org.apache.log4j.consoleAppender
Log4j.rootlogger = stdout, r
Run: Refer to Installing.html
Under Windows
Open the command prompt cmd to jboss_home / binrun.bat -c all
Use ANT
After Build, run.
discuss:
The simplified version is to see the Statefull source code in jboss-ejb-3.0_preview_5.zip, in EJB SPE 3.0, it seems to be deleted this interface, I think it simplifies a lot of interfaces, effective development J2EE Application
