无法创建远程连接 [根异常是 java.lang.RuntimeException：操作失败，状态为 WAITING]

Question

我创建了两个项目：服务器端和客户端。我通过部署服务器端取得了成功，但我无法从客户端连接到它。这是我的代码：

RemoteCalculator.java：

package com.calculator;
import javax.ejb.Remote;

@Remote
public interface RemoteCalculator {
    int add( int op1, int op2 );
}

---

CalculatorBean.java：

package com.calculator;
import javax.ejb.Stateless;

@Stateless
public class CalculatorBean implements RemoteCalculator {
    @Override
    public int add( int op1, int op2 ) {
        return op1 + op2;
    }
}

---

我用 maven 组装它。这里我向您展示调用部分：

EJB_Client.java：

public class EJBClient {
    private static void invokeStatelessBean() throws NamingException {
        RemoteCalculator statelessRemoteCalculator = lookupRemoteStatelessCalculator();
        int sum = statelessRemoteCalculator.add( 3, 4 );
        System.out.println( "sum = " + sum );
    }

    private static RemoteCalculator lookupRemoteStatelessCalculator() throws NamingException {
        Security.addProvider( new JBossSaslProvider() );
        final Hashtable<String, String> p = new Hashtable<String, String>();
        p.put( Context.PROVIDER_URL, "remote://127.0.0.1:1099" );
        p.put( Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming" );
        p.put( Context.SECURITY_PRINCIPAL, "admin" );
        p.put( Context.SECURITY_CREDENTIALS, "jboss" );
        final Context context = new InitialContext( p );

        return ( RemoteCalculator ) context
            .lookup( "java:/ejb-remote-stateless-1.0-SNAPSHOT/CalculatorBean!com.calculator.RemoteCalculator" );
}

    public static void main( String... args ) throws NamingException {
        invokeStatelessBean();
    }
}

---

在运行主方法时，我得到了这个日志：

Exception in thread "main" javax.naming.NamingException: Failed to create remoting connection [Root exception is java.lang.RuntimeException: Operation failed with status WAITING]
    at org.jboss.naming.remote.client.ClientUtil.namingException(ClientUtil.java:36)
    at org.jboss.naming.remote.client.InitialContextFactory.getInitialContext(InitialContextFactory.java:121)
    at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:684)
    at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:307)
    at javax.naming.InitialContext.init(InitialContext.java:242)
    at javax.naming.InitialContext.<init>(InitialContext.java:216)
    at Main.lookupRemoteStatelessCalculator(Main.java:31)
    at Main.main(Main.java:46)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: java.lang.RuntimeException: Operation failed with status WAITING
    at org.jboss.naming.remote.protocol.IoFutureHelper.get(IoFutureHelper.java:89)
    at org.jboss.naming.remote.client.NamingStoreCache.getRemoteNamingStore(NamingStoreCache.java:56)
    at org.jboss.naming.remote.client.InitialContextFactory.getOrCreateCachedNamingStore(InitialContextFactory.java:166)
    at org.jboss.naming.remote.client.InitialContextFactory.getOrCreateNamingStore(InitialContextFactory.java:139)
    at org.jboss.naming.remote.client.InitialContextFactory.getInitialContext(InitialContextFactory.java:104)
    ... 11 more

请告诉我，出了什么问题？

Answer 1

我遇到了这个问题，解决这个问题的方法是将用户添加到“application-roles.properties”文件中。