Java 从EJB会话Bean调用Springbean

我想从EJB会话bean调用Springbean。下面是我想要实现的一个示例场景

Spring接口： 春豆： EJB接口： EJB会话Bean： （请注意，我在Spring对象上使用了

@Autowired

）

---

我的应用程序未能从EJB加载

ReqSpring

对象，并且始终生成

NullPointerException

。知道为什么会发生这种情况吗？

您不能像这样将

Spring

Bean注入

EJB

，因为

EJB

不是由

Spring

容器管理的。无论如何，通过使用

SpringBeanAutowiringInterceptor

，您将能够做到这一点。尝试使用此批注：

@Stateless(name = "EjbWS", mappedName = "EjbWS")
@WebService(name = "EjbService", portName = "EjbServicePort")
@Interceptors(SpringBeanAutowiringInterceptor.class)
public class EjbServiceBean implements EjbService {

    @Autowired
    private ReqSpring reqSpring;

    public EjbServiceBean() {
    }

    @WebMethod
    public String echo(@WebParam(name="msg")String msg) {
        System.out.println("ReqSpring = "+reqSpring);
        return reqSpring.processMsg(msg);
    }
}

---

谢谢，但上面说是由以下原因引起的

：java.lang.IllegalStateException:JBAS011048:无法构造组件实例

您的错误可能在其他地方，您可以发布stacktrace吗

@Component
public class ReqStringImpl implements ReqSpring{

    public String processMsg(String msg) {
        return "Msg ["+msg+"] is processed";
    }
}

@Remote
public interface EjbService{
    String echo(String msg);
}

@Stateless(name = "EjbWS", mappedName = "EjbWS")
@WebService(name = "EjbService", portName = "EjbServicePort")
public class EjbServiceBean implements EjbService {

    =====> @Autowired
    =====> private ReqSpring reqSpring;

    public EjbServiceBean() {
    }

    @WebMethod
    public String echo(@WebParam(name="msg")String msg) {
            // This is printing null
        System.out.println("ReqSpring = "+reqSpring);
        return reqSpring.processMsg(msg);
    }
}

@Stateless(name = "EjbWS", mappedName = "EjbWS")
@WebService(name = "EjbService", portName = "EjbServicePort")
@Interceptors(SpringBeanAutowiringInterceptor.class)
public class EjbServiceBean implements EjbService {

    @Autowired
    private ReqSpring reqSpring;

    public EjbServiceBean() {
    }

    @WebMethod
    public String echo(@WebParam(name="msg")String msg) {
        System.out.println("ReqSpring = "+reqSpring);
        return reqSpring.processMsg(msg);
    }
}