Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.6.0:compile (default-compile) on project  dubbo-rpc-xml: Compilation failure 

dubbo\dubbo-rpc\dubbo-rpc-xml\src\main\java\org\apache\dubbo\xml\rpc\protocol\xmlrpc\XmlRpcProtocol.java:[154,4] 错误: Override 不是可重复的注释类型



if (e != null) {
            Class<?> cls = e.getClass();
            if (SocketTimeoutException.class.equals(cls)) {
                return RpcException.TIMEOUT_EXCEPTION;
            } else if (IOException.class.isAssignableFrom(cls)) {
                return RpcException.NETWORK_EXCEPTION;
            } else if (ClassNotFoundException.class.isAssignableFrom(cls)) {
                return RpcException.SERIALIZATION_EXCEPTION;
            }
        }
        return super.getErrorCode(e);
    }
    @Override
    public void destroy() {
        super.destroy();
        for (String key : new ArrayList<>(serverMap.keySet())) {
            HttpServer server = serverMap.remove(key);
            if (server != null) {
                try {
                    if (logger.isInfoEnabled()) {
                        logger.info("Close xml server " + server.getUrl());
                    }
                    server.close();
                } catch (Throwable t) {
                    logger.warn(t.getMessage(), t);
                }
            }
        }
    }
}