SOA 服务使用 spring 获取空 ejb 实例

Question

我有一个实现 apache cxf Web 服务和 ejb 对象的 maven 项目，我正在尝试使用 spring 注入 ejb 实例，当我运行程序时，spring 容器将 ejb bean 作为空返回。我不明白如何将 ejb 实现与春豆联系起来。

该项目有一个apache cxf实现，这样：

ServiceBindingImpl

@WebService(endpointInterface = "cl.flying.binding.ServiceBinding")
public class ServiceBindingImpl implements ServiceBinding { 
    private ServiceBusinessLocal serviceEjb
    public void setServiceEjb(ServiceBusinessLocal serviceEjb) {
        this.serviceEjb = serviceEjb
    }
    public String sayHello(String request) {
        return serviceEjb.sayHello(request);
    }
}

It also has a spring configuration in order to achieve DI, applicationContext.xml

<bean id="serviceEjb"
    class="org.springframework.ejb.access.LocalStatelessSessionProxyFactoryBean" scope="request">
    <property name="jndiName" value="ejb/ServiceBusinessImpl" />
    <property name="businessInterface" value="cl.service.business.ServiceBusinessLocal" />
    <property name="resourceRef" value="true" />
</bean>
<bean id="ServiceController" class="cl.flying.binding.ServiceBindingImpl">
    <property name="serviceEjb" ref="serviceEjb" />
</bean>

这就是业务层，无状态 ejb 实现：

@Stateless(mappedName="ejb/ServiceBusiness")
public class ServiceBusinessImpl implements ServiceBusinessLocal
    public String sayHello(String request) {
        return "hello: " + request;
    }
}

How can I instantiate the ejb object?

Answer 1

Here is the bean configuration file I used as part POC sometime back

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:jee="http://www.springframework.org/schema/jee"
    xmlns:util="http://www.springframework.org/schema/util"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.2.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
        http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd">
    <jee:remote-slsb id="calculatorRemote" business-interface="com.kp.swasthik.remote.CalculatorRemote" jndi-name="java:kp-ejb/Calculator!com.kp.swasthik.remote.CalculatorRemote" lookup-home-on-startup="true" >
        <jee:environment>
             java.naming.factory.initial=org.jboss.naming.remote.client.InitialContextFactory
             java.naming.provider.url=http-remoting://localhost:8080
             jboss.naming.client.ejb.context=true
             java.naming.security.principal=username
             java.naming.security.credentials=password
        </jee:environment>
    </jee:remote-slsb>
    <context:component-scan base-package="com.kp.swasthik.jaxws"></context:component-scan>
    <util:properties id="remoteRef">
        <prop key="java.naming.factory.initial">org.jboss.naming.remote.client.InitialContextFactory</prop>
        <prop key="java.naming.provider.url">remote://localhost:4447</prop>
        <prop key="java.naming.factory.url.pkgs">org.jboss.ejb.client.naming</prop>
    </util:properties>
</beans>

并注入豆子，如下所示。

@Service
@WebService
public class KPService {
    @Autowired
    CalculatorRemote calc;
    @WebMethod
    public int add(int a, int b){
        return calc.add(a, b);
    }

    @WebMethod
    public Result subtract(Input num){
         return calc.subtract(num);
    }
}

注意：上述配置适用于 Wildfly/JBOSS EAP，您可能需要根据应用服务器进行相应更改