EJB 3.1的JNDI名称在JBoss 7上运行 [英] JNDI name for EJB 3.1 running on JBoss 7

问题描述

我试图在JBoss 7上运行这个EJB示例，但总是会抛出NameNotFoundException。

我尝试测试的EJB是：Calculator。当我在JBoss 7上部署它时，显示服务器控制台中的下一行：

  java：global / CalculadoraProject / Calculator！demo。 CalculatorRemote 
 java：app / CalculadoraProject / Calculator！demo.CalculatorRemote 
 java：module / Calculator！demo.CalculatorRemote 
 java：jboss / exports / CalculadoraProject / Calculator！demo.CalculatorRemote 
 java：全局/ CalculadoraProject / Calculator 
 java：app / CalculadoraProject / Calculator 
 java：模块/计算器
  

计算器bean代码是这样的：

 包演示; 
 import javax.ejb.Stateless; 
 
 @Stateless 
 public class Calculator implements CalculatorRemote 
 {
 @Override 
 public double sum（double a，double b）
 {
返回a + b; 
} 
} 
  

远程接口代码是：

 包演示; 
 import javax.ejb.Remote; 
 
 @Remote 
 public interface CalculatorRemote 
 {
 public double sum（double a，double b）; 
} 
  

必须通过JNDI连接EJB的主要代码是：

 包演示; 
 import java.util.Properties; 
 import javax.naming.Context; 
 import javax.naming.InitialContext; 
 
 public class Test 
 {
 public static void main（String [] args）throws异常
 {
上下文ctx = getInitialContext（）; 
 
 String jndiName =??? 
 CalculatorRemote c =（CalculatorRemote）ctx.lookup（jndiName）; 
 
 System.out.println（c.sum（2,2））; 
} 
 
 private static上下文getInitialContext（）throws异常
 {
属性p = new Properties（）; 
 p.put（java.naming.factory.initial，org.jboss.naming.remote.client.InitialContextFactory）; 
 p.put（java.naming.provider.url，remote：// localhost：4447）; 
 
返回新的InitialContext（p）; 
} 
} 
  

第一个错误是：身份验证失败。所以，我在服务器中创建一个用于ApplicationRealm的管理用户用户：usr：test，pwd：test123然后修改getInitialContext（）看起来像这样：

 属性p = new Properties（）; 
 p.put（java.naming.factory.initial，org.jboss.naming.remote.client.InitialContextFactory）; 
 p.put（java.naming.provider.url，remote：// localhost：4447）; 
 p.put（Context.SECURITY_PRINCIPAL，test）; 
 p.put（Context.SECURITY_CREDENTIALS，test123）; 
  

下一个错误是：javax.naming.NameNotFoundException：????????

所以，我想问：我必须用什么名字来查找我的Calculator bean？

谢谢！

解决方案

1）通过使用全局JNDI名称。

  java：global / CalculadoraProject / Calculator！demo.CalculatorRemote 
  

2 ）通过使用ejb JNDI名称。如果您仍然收到错误，请稍加斜线。应该是正确的，如果你有所需的libs，并没有语法错误在其他代码。

  ejb：/ CalculadoraProject /Calculator!demo.CalculatorRemote 
  

JNDI结构

对于无状态bean： p>

  ejb：< app-name> /< module-name> /< distinct-name> /< bean-name> ;！<完全限定-类名的最远程接口> 
  

对于有状态的bean：

  EJB：其中APP-名称> /<模块名称> /<不同-名称> /<豆名称><完全限定-类名的最远程！ -interface>？stateful 
  

值得阅读的链接：


< a href =https://docs.jboss.org/author/display/AS71/EJB+invocations+from+a+remote+client+using+JNDI =nofollow> https：//docs.jboss。 org / author / display / AS71 / EJB + invocations + from + a + remote + client + using + JNDI


https://docs.jboss.org/作者/显示/ AS71 /远程+ EJB +调用+通过+ JNDI + - + EJB +客户端+ API +或+远程命名+项目

希望这有助于：）

I'm trying to run this EJB example on JBoss 7 but it always throws NameNotFoundException.

The EJB that I try to test is: Calculator. When I deploy it on JBoss 7 show this next lines in the server console:

java:global/CalculadoraProject/Calculator!demo.CalculatorRemote
java:app/CalculadoraProject/Calculator!demo.CalculatorRemote
java:module/Calculator!demo.CalculatorRemote
java:jboss/exported/CalculadoraProject/Calculator!demo.CalculatorRemote
java:global/CalculadoraProject/Calculator
java:app/CalculadoraProject/Calculator
java:module/Calculator

The Calculator bean code is this:

package demo;
import javax.ejb.Stateless;

@Stateless
public class Calculator implements CalculatorRemote
{
    @Override
    public double sum(double a, double b)
    {
        return a+b;
    }
}

And the remote interface code is:

package demo;
import javax.ejb.Remote;

@Remote
public interface CalculatorRemote
{
    public double sum(double a,double b);
}

The main code which must connect the EJB through JNDI is:

package demo;
import java.util.Properties;
import javax.naming.Context;
import javax.naming.InitialContext;

public class Test
{
    public static void main(String[] args) throws Exception
    {
        Context ctx=getInitialContext();

        String jndiName="?????????????";
        CalculatorRemote c = (CalculatorRemote)ctx.lookup(jndiName);

        System.out.println( c.sum(2,2) );
    }

    private static Context getInitialContext() throws Exception
    {
        Properties p=new Properties();
        p.put("java.naming.factory.initial","org.jboss.naming.remote.client.InitialContextFactory");
        p.put("java.naming.provider.url","remote://localhost:4447");

        return new InitialContext(p);
    }
}

First error is: Authentication failed. So, I create an "Management User" user for "ApplicationRealm" into the server: usr: test, pwd: test123 and then modify getInitialContext() to look like this:

Properties p=new Properties();        
p.put("java.naming.factory.initial","org.jboss.naming.remote.client.InitialContextFactory");
p.put("java.naming.provider.url","remote://localhost:4447");
p.put(Context.SECURITY_PRINCIPAL,"test");
p.put(Context.SECURITY_CREDENTIALS,"test123");

The next error is: javax.naming.NameNotFoundException: ?????????????

So, I want ask: What name must I use to lookup my Calculator bean?

Thanks!

解决方案

1) by using global JNDI name.

java:global/CalculadoraProject/Calculator!demo.CalculatorRemote

2) by using ejb JNDI name. Play with slashes a little if you still get the error. Should be correct if you have the required libs and don't have syntax errors in other places of code.

ejb:/CalculadoraProject/Calculator!demo.CalculatorRemote

JNDI structure
For stateless beans:

ejb:<app-name>/<module-name>/<distinct-name>/<bean-name>!<fully-qualified-classname-of-the-remote-interface>

For stateful beans:

ejb:<app-name>/<module-name>/<distinct-name>/<bean-name>!<fully-qualified-classname-of-the-remote-interface>?stateful

Links worth reading:
https://docs.jboss.org/author/display/AS71/EJB+invocations+from+a+remote+client+using+JNDI
https://docs.jboss.org/author/display/AS71/Remote+EJB+invocations+via+JNDI+-+EJB+client+API+or+remote-naming+project

Hope this helped :)

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