Ejb3.0 entry-level instance

Compared with ejb2, ejb3 is much easier to develop. All things can be done with annotations. You do not need to deploy the description file...

All jar packages under jboss6/client should be put into classpath, compress the interface of the EJB server into a jar package into the client, or copy the interface Java file.

How can I view the JNDI Of The EJB container?

When JBoss is started, view the Console

4:05:06, 985 info [jbossaskernel] and supplies:
4:05:06, 985 info [jbossaskernel] JNDI: bean12/remote-com.ly.bean.Bean1
4:05:06, 985 info [jbossaskernel] class: COM. ly. Bean. bean1
4:05:06, 985 info [jbossaskernel] class: COM. ly. Bean. bean2
4:05:07, 001 info [jbossaskernel] JNDI: bean12/remote-com.ly.bean.Bean2
4:05:07, 001 info [jbossaskernel]
JNDI: bean12/remote
4:05:07, 001 info [jbossaskernel] JNDI: bean12

The main architecture of the EJB server is as follows:

-Src
├ ── Com
│ └ ── Ly
│ ├ ── Bean
│ Bean1.java
│ Bean2.java
│ Bean3.java
│
│ ─ ── Impl
│ Bean1impl. Java
│ Bean2impl. Java
│
└-META-INF
Manifest. MF

package com.ly.bean;import javax.ejb.Remote;@Remotepublic interface Bean1 {  public void sayBean1();}

package com.ly.bean;import javax.ejb.Remote;@Remotepublic interface Bean2 {  public void sayBean2();}

package com.ly.bean;import javax.ejb.Remote;@Remotepublic interface Bean3 {  public void sayBean3();}

package com.ly.impl;import javax.ejb.Stateless;import com.ly.bean.Bean1;import com.ly.bean.Bean2;@Stateless(name="bean12")public class Bean1Impl implements Bean1,Bean2 {    public void sayBean1() {      System.out.println("bean1.........");    }    public void sayBean2() {     System.out.println("bean2.........");    }}

package com.ly.impl;import javax.ejb.EJB;import javax.ejb.Stateless;import com.ly.bean.Bean1;import com.ly.bean.Bean2;import com.ly.bean.Bean3;@Stateless(name="bean3")public class Bean2Impl implements Bean3 {    @EJB(beanName="bean12")    Bean1 bean1;     Bean2 bean2;    public void sayBean3() {      bean1.sayBean1();      bean2.sayBean2();      System.out.println("bean3.........");    }    @EJB(mappedName="bean12/remote")    public void setBean2(Bean2 bean2) {        this.bean2 = bean2;    }}

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~

The client code is as follows:

Import Java. util. properties; import javax. naming. context; import javax. naming. initialcontext; import COM. ly. bean. bean3;/*** the JBoss black screen client output is as follows * <br/> * 14:05:09, 481 info [Org. JBoss. bootstrap. impl. base. server. abstractserver [6.0.0.final "Neo"] started in 34 S: 101 Ms <br/> 14:05:37, 717 info [stdout] bean1 ......... <br/> 14:05:37, 733 info [stdout] bean2 ......... <br/> 14:05:37, 733 info [stdout] bean3 ......... <br/> * @ author administrator **/public class client {public static void main (string ARGs []) throws exception {properties pro = new properties (); pro. setproperty ("Java. naming. factory. initial "," org. jnp. interfaces. namingcontextfactory "); pro. setproperty ("Java. naming. provider. URL "," localhost: 1099 "); pro. setproperty ("Java. naming. factory. URL. pkgs "," org. JBoss. naming "); Context context = new initialcontext (Pro); bean3 bean = (bean3) context. lookup ("bean3/remote"); bean. saybean3 (); // Remote Server execution saybean3 method }}

The output in the JBoss startup console is as follows:

N ajp-127.0.0.1-8009
14:05:09, 481 info [org. JBoss. Bootstrap. impl. Base. server. abstractserver] jbossas
[6.0.0.final "Neo"] started in 34 seconds: 101 Ms
14:05:37, 717 info [stdout] bean1 .........
14:05:37, 733 info [stdout] bean2 .........
14:05:37, 733 info [stdout] bean3 .........