Spring升级后RmiRegistryFactoryBean弃用，ConnectorServerFactoryBean适配方案咨询

升级Spring版本后，org.springframework.remoting.rmi.RmiRegistryFactoryBean类已被弃用，当前配置中ConnectorServerFactoryBean依赖该registry实例，需要找到该类的替代方案，或实现不依赖registry创建ConnectorServerFactoryBean。原配置如下：

<bean id="registry"
    class="org.springframework.remoting.rmi.RmiRegistryFactoryBean"
>
    <property name="port" value="{jmx.port}" />
    <property name="clientSocketFactory" ref="sslRMIClientSocketFactory" />
    <property name="serverSocketFactory" ref="sslRMIServerSocketFactory" />
</bean>

<bean id="serverConnector"
    class="org.springframework.jmx.support.ConnectorServerFactoryBean"
    depends-on="registry"
>
    <property name="serviceUrl"
        value="service:jmx:rmi://0.0.0.0:{jmx.port}/jndi/rmi://0.0.0.0:{jmx.port}/drsrmi" />
    <property name="environment"
    >
        <map>
            <entry key="jmx.remote.jndi.rebind" value="true"/>
            <entry key="jmx.remote.tls.need.client.authentication" value="true"/>
            <entry key="jmx.remote.rmi.server.socket.factory" value-ref="sslRMIServerSocketFactory"/>
            <entry key="jmx.remote.rmi.client.socket.factory" value-ref="sslRMIClientSocketFactory"/>
            <entry key="com.sun.jndi.rmi.factory.socket" value-ref="sslRMIClientSocketFactory"/>
        </map>
    </property>
</bean>

方案一：替代RmiRegistryFactoryBean创建RMI注册表 #

Spring弃用RmiRegistryFactoryBean后，可直接使用JDK原生的java.rmi.registry.LocateRegistry类创建RMI注册表，通过XML的factory-method实现Spring管理：

<!-- 替代原registry bean，使用JDK原生API创建带SSL支持的RMI注册表 -->
<bean id="registry" class="java.rmi.registry.LocateRegistry" factory-method="createRegistry">
    <constructor-arg value="{jmx.port}" />
    <constructor-arg ref="sslRMIClientSocketFactory" />
    <constructor-arg ref="sslRMIServerSocketFactory" />
</bean>

<!-- ConnectorServerFactoryBean配置保持不变，依然依赖registry实例 -->
<bean id="serverConnector"
    class="org.springframework.jmx.support.ConnectorServerFactoryBean"
    depends-on="registry"
>
    <property name="serviceUrl"
        value="service:jmx:rmi://0.0.0.0:{jmx.port}/jndi/rmi://0.0.0.0:{jmx.port}/drsrmi" />
    <property name="environment">
        <map>
            <entry key="jmx.remote.jndi.rebind" value="true"/>
            <entry key="jmx.remote.tls.need.client.authentication" value="true"/>
            <entry key="jmx.remote.rmi.server.socket.factory" value-ref="sslRMIServerSocketFactory"/>
            <entry key="jmx.remote.rmi.client.socket.factory" value-ref="sslRMIClientSocketFactory"/>
            <entry key="com.sun.jndi.rmi.factory.socket" value-ref="sslRMIClientSocketFactory"/>
        </map>
    </property>
</bean>

方案二：不依赖预先创建的RMI注册表 #

JMX的RMI连接器支持自动创建RMI注册表，只要指定端口未被占用，无需预先定义registry bean，只需移除depends-on="registry"配置即可：

<!-- 移除原registry bean，由JMX连接器自动创建RMI注册表 -->
<bean id="serverConnector"
    class="org.springframework.jmx.support.ConnectorServerFactoryBean"
>
    <property name="serviceUrl"
        value="service:jmx:rmi://0.0.0.0:{jmx.port}/jndi/rmi://0.0.0.0:{jmx.port}/drsrmi" />
    <property name="environment">
        <map>
            <entry key="jmx.remote.jndi.rebind" value="true"/>
            <entry key="jmx.remote.tls.need.client.authentication" value="true"/>
            <entry key="jmx.remote.rmi.server.socket.factory" value-ref="sslRMIServerSocketFactory"/>
            <entry key="jmx.remote.rmi.client.socket.factory" value-ref="sslRMIClientSocketFactory"/>
            <entry key="com.sun.jndi.rmi.factory.socket" value-ref="sslRMIClientSocketFactory"/>
        </map>
    </property>
</bean>

注意：自动创建注册表时，若指定端口已被占用会抛出绑定异常，需确保端口可用。

内容的提问来源于stack exchange，提问作者SRG