实现泛化（服务器端泛化）

package com.foo;
public class MyGenericService implements GenericService {
 
    public Object $invoke(String methodName, String[] parameterTypes, Object[] args) throws GenericException {
        if ("sayHello".equals(methodName)) {
            return "Welcome " + args[0];
        }
    }
}

<bean id="genericService" class="com. foo. MyGenericService" />
<dubbo:service interface="com.foo.BarService" ref="genericService" />

...
// Use org.apache.dubbo.rpc.service.GenericService to replace all interface implementations
GenericService xxxService = new XxxGenericService();

// This instance is very heavy, and it encapsulates all connections with the registry and service providers, please cache
ServiceConfig<GenericService> service = new ServiceConfig<GenericService>();
// Weakly typed interface name
service.setInterface("com.xxx.XxxService");
service.setVersion("1.0.0");
// point to a generic service implementation
service.setRef(xxxService);
 
// expose and register services
service. export();