Question

我正在使用WildFly 8.1.0最终版本。

我的应用程序是部署在WAR中的JavaEE Web应用程序（没有EJB模块.ear）。

我想使用JNDI以编程方式使用他的名字调用本地EJB。

EJB只是使用@Stateless注释（没有本地或远程接口）

我尝试以下功能：

private <E extends DomainObject> CrudService<E> lookUp(Class<E> cl) {
    try {
        final Hashtable jndiProperties = new Hashtable();
        jndiProperties.put(Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming");
        final Context context = new InitialContext(jndiProperties);
        // The app name is the application name of the deployed EJBs. This is typically the ear name
        // without the .ear suffix. However, the application name could be overridden in the application.xml of the
        // EJB deployment on the server.
        // Since we haven't deployed the application as a .ear, the app name for us will be an empty string
        final String appName = "";
        // This is the module name of the deployed EJBs on the server. This is typically the jar name of the
        // EJB deployment, without the .jar suffix, but can be overridden via the ejb-jar.xml
        // In this example, we have deployed the EJBs in a jboss-as-ejb-remote-app.jar, so the module name is
        // jboss-as-ejb-remote-app
        final String moduleName = "jboss-as-ejb-remote-app";
        // AS7 allows each deployment to have an (optional) distinct name. We haven't specified a distinct name for
        // our EJB deployment, so this is an empty string
        final String distinctName = "";
        // The EJB name which by default is the simple class name of the bean implementation class
        final String serviceName = cl.getSimpleName() + "Service";
        // let's do the lookup
        return (CrudService<E>) context.lookup("ejb:" + appName + "/" + moduleName + "/" + distinctName + "/" + serviceName );
        //return (CrudService<E>) context.lookup(serviceName);
    } catch (NamingException e) {
        log.error("NamingException {}",e) ;
        throw new RuntimeException(e) ;
    }
}

但它不起作用（显然它是远程EJB的）

但是我没有在WildFly的WAR中找到本地EJB的任何示例，我不知道该怎么做，我不经常使用JNDI ......

我找到了一个用@Named注释EJB的工作（value =＆＃34; EjbClassName＆＃34;）并使用JSF调用它们。

FacesContext context = FacesContext.getCurrentInstance() ;
return context.getApplication().evaluateExpressionGet(context, "#{"+cl.getSimpleName()+"Service}", CrudService.class) ;

它正在工作，

但我不想使用JSF，因为它与视图层无关。

Answer 1

感谢Yamada，JNDI名称出现在启动时的服务器日志中

此解决方案有效：

private <E extends DomainObject> CrudService<E> lookUp(@NonNull Class<E> entityClass) throws NamingException {
    try {
        final Hashtable jndiProperties = new Hashtable();
        jndiProperties.put(Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming");
        final Context context = new InitialContext(jndiProperties);
        return (CrudService<E>) context.lookup("java:module/"+entityClass.getSimpleName()+"Service");
    } catch (NamingException e) {
        log.error("lookUp({}) throws NamingException {}",entityClass.getSimpleName(),e.getMessage()) ;
        throw e ;
    }
}

没有使用@LocalBean注释EJB

Answer 2

来自手机的简短回答：使用@LocalBean获取bean的无接口视图。将此添加到无状态会话Bean，您应该在服务器的jndi视图中找到它。

部署在WAR中的本地EJB的WildFly JNDI查找

2 个答案: