Wildfly上的EJB从另一个Wildfly调用远程EJB [英] EJB on Wildfly calling remote EJB from another Wildfly
问题描述
我知道，有类似的问题，但他们中没有一个真正帮助我的问题。
其中一个持有一个休息的应用程序，当它收到GET时触发无状态会话bean
SenderBean 。 此后，此无状态会话bean应该调用位于另一个wildfly实例上的远程无状态会话bean
PrintBean 的方法。 我将开始解释我迄今为止做过的事情（也许我错过了一些东西，我对Java EE和Wildfly来说都是新手。）
我将使用 SenderBean 发件人调用Wildfly实例， PrintBean Receiver 。
我创建了一个应用程序用户命名为 Stefan 密码 stefan ，属于客人 接收者。
在发件人中，在 standalone-full.xml 中，我添加了一个安全领域
< security-realm name =ejb-security-realm>
<服务器身份>
< secret value =c3R1ZmFu/>
< / server-identityities>
< / security-realm>
到< security-realms> 部分。
我还添加了一个outbound-socket-binding通过放置
< outbound-socket-binding name =remote -ejb>
< remote-destination host =localhostport =8080/>
< / outbound-socket-binding>
到< socket-binding-group ...> 部分。
最后，我创建了一个出站连接，通过放置
< outbound-connections>
< remote-outbound-connection name =remote-ejb-connectionoutbound-socket-binding-ref =remote-ejbusername =Stefansecurity-realm =ejb-security-realm> ;
<属性>
< property name =SASL_POLICY_NOANONYMOUSvalue =false/>
< property name =SSL_ENABLEDvalue =false/>
< / properties>
< / remote-outbound-connection>
< / outbound-connections>
进入<子系统xmlns =urn：jboss：domain：remoting ：2.0> 部分。
使用CLI命令启动发件人 standalone.bat -c standalone-full.xml -Djboss.socket.binding.port-offset = 100 -Djboss.node.name = Sender 和接收者 with standalone.bat -c standalone-full.xml -Djboss.node.name = Receiver 。
发件人上的本地无状态会话Bean称为 SenderBean ：
@Stateless
public class SenderBean implements SenderService {
private static final Logger logger = Logger.getLogger（SenderBean .class.getSimpleName（））;
public void send（）{
logger.info（Trying to invoke）;
this.invoke（）;
}
private void invoke（）{
属性clientProperties = new Properties（）;
clientProperties.put（remote.connections，default）;
clientProperties.put（remote.connection.default.port，8080）;
clientProperties.put（remote.connection.default.host，localhost）;
属性属性= new Properties（）;
properties.put（Context.URL_PKG_PREFIXES，org.jboss.ejb.client.naming）;
try {
Context context = new InitialContext（properties）;
context = new InitialContext（properties）;
对象x = context.lookup（ejb：baseproject-ear-01.00.00-SNAPSHOT / testdomain-service-01.00.00-SNAPSHOT / Receiver / PrintBean！com.schubert.baseproject.testdomain.service.PrintService ）;
logger.info（获取一些对象+ x.toString（））;
logger.info（Trying to cast。）;
PrintService s =（PrintService）x;
logger.info（Cast successful）;
logger.info（使用远程ejb打印+ s.print（Markus））;
} catch（NamingException e）{
e.printStackTrace（）;
}
}
}
而$ code>接收者包含 PrintBean ：
@Stateless
@Remote（PrintService.class）
public class PrintBean实现PrintService {
@Override
public String print（String name）{
返回你好+名字;
}
}
现在的问题是，我总是得到一个code> IllegalStateException 说EJBCLIENT000025：没有EJB接收器可用于处理...
我可能会做错事吗？我对EJB和Wildfly来说相当新鲜。
您可以在 GitHub 上找到项目设置。
您应该将文件jboss-ejb-client.xml添加到发件人EAR（而不是WAR）中。将它放在application.xml旁边。
jboss-ejb-client.xml内容：
< JBoss的-EJB-客户机GT;
< client-context>
< ejb-recipients>
< remoting-ejb-receiver outbound-connection-ref =remote-ejb-connection/>
< / ejb-recipients>
< / client-context>
< / jboss-ejb-client>
在发件人bean中有两行足够：
Context context = new InitialContext（）;
对象x = context.lookup（ejb：baseproject-ear-01.00.00-SNAPSHOT / testdomain-service-01.00.00-SNAPSHOT / PrintBean！com.schubert.baseproject.testdomain.service.PrintService）;
请注意，我从路径中删除了Receiver /。您可以在服务器日志中找到JNDI绑定。
my current problem in general is, that i have two Wildfly 8.2.0Final instances running on my machine.
I know, there are similar questions, but none of them really help with my problem.
One of them holds a restful application that triggers a stateless session bean SenderBean when it receives a GET.
Afterwards, this stateless session bean should invoke a method from a remote stateless session bean PrintBean, which is located on the other wildfly instance.
I'll start of by explaining what i have done so far (maybe i missed something, i'm quite new to Java EE and Wildfly).
I'm going to call the Wildfly instance with the SenderBean the Sender and the one with the PrintBean the Receiver.
I created an Application user named Stefan with Password stefan, belonging to group guest on the Receiver.
On the Sender, in the standalone-full.xml, i added a Security-Realm by putting
<security-realm name="ejb-security-realm">
<server-identities>
<secret value="c3R1ZmFu"/>
</server-identities>
</security-realm>
into the <security-realms> section.
I also added a outbound-socket-binding by putting
<outbound-socket-binding name="remote-ejb">
<remote-destination host="localhost" port="8080"/>
</outbound-socket-binding>
into the <socket-binding-group ...> section.
Last, i created an outbound-connection, by putting
<outbound-connections>
<remote-outbound-connection name="remote-ejb-connection" outbound-socket-binding-ref="remote-ejb" username="Stefan" security-realm="ejb-security-realm">
<properties>
<property name="SASL_POLICY_NOANONYMOUS" value="false"/>
<property name="SSL_ENABLED" value="false"/>
</properties>
</remote-outbound-connection>
</outbound-connections>
into the <subsystem xmlns="urn:jboss:domain:remoting:2.0"> section.
I start the Sender with the CLI command standalone.bat -c standalone-full.xml -Djboss.socket.binding.port-offset=100 -Djboss.node.name=Sender and the Receiver with standalone.bat -c standalone-full.xml -Djboss.node.name=Receiver.
The Local Stateless Session Bean on the Sender is called SenderBean:
@Stateless
public class SenderBean implements SenderService {
private static final Logger logger = Logger.getLogger(SenderBean.class.getSimpleName());
public void send(){
logger.info("Trying to invoke");
this.invoke();
}
private void invoke() {
Properties clientProperties = new Properties();
clientProperties.put("remote.connections", "default");
clientProperties.put("remote.connection.default.port", "8080");
clientProperties.put("remote.connection.default.host", "localhost");
Properties properties = new Properties();
properties.put(Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming");
try {
Context context = new InitialContext(properties);
context = new InitialContext(properties);
Object x = context.lookup("ejb:baseproject-ear-01.00.00-SNAPSHOT/testdomain-service-01.00.00-SNAPSHOT/Receiver/PrintBean!com.schubert.baseproject.testdomain.service.PrintService");
logger.info("Obtained some object "+x.toString());
logger.info("Trying to cast.");
PrintService s = (PrintService) x;
logger.info("Cast successful");
logger.info("Printing using remote ejb: "+s.print("Markus"));
} catch (NamingException e) {
e.printStackTrace();
}
}
}
And the Receiver contains the PrintBean:
@Stateless
@Remote(PrintService.class)
public class PrintBean implements PrintService {
@Override
public String print(String name) {
return "Hello " + name;
}
}
the problem now is, I always get a IllegalStateException that says EJBCLIENT000025: No EJB receiver available for handling ...
Am I maybe doing something very wrong? I am fairly new to EJBs and Wildfly. You can find the project setup on GitHub.
You should add file jboss-ejb-client.xml to your sender EAR (not to WAR). Place it next to application.xml.
jboss-ejb-client.xml content:
<jboss-ejb-client>
<client-context>
<ejb-receivers>
<remoting-ejb-receiver outbound-connection-ref="remote-ejb-connection"/>
</ejb-receivers>
</client-context>
</jboss-ejb-client>
In sender bean two lines are enough:
Context context = new InitialContext();
Object x = context.lookup("ejb:baseproject-ear-01.00.00-SNAPSHOT/testdomain-service-01.00.00-SNAPSHOT/PrintBean!com.schubert.baseproject.testdomain.service.PrintService");
Note that I removed "Receiver/" from path. You can find JNDI bindings in server log.
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