如果我想在apache-camel中有一个ftp自定义组件，如何将ftp uri参数设置为ftpConfiguration？我尝试使用Uri param注解来获取uri参数，但是失败了。有人知道吗？下面是我的示例代码：

public class FtpConfigurationExt extends FtpConfiguration {
    private static final Logger LOGGER = LoggerFactory.getLogger(FtpConfigurationExt.class);

    @UriParam(name = "ftpCommands")
    private String ftpCommands;

    public FtpConfigurationExt() {
        super();
    }

    public FtpConfigurationExt(URI uri) {
        super(uri);
        setProtocol("ftp"); 
    }

    public String getFtpCommands() {
        return ftpCommands;
    }

    public void setFtpCommands(String ftpCommands) {
        LOGGER.info(" FtpConfigurationExt ftpCommands : " + ftpCommands);
        this.ftpCommands = ftpCommands;
    }
}