客户端有个日志
/logs/rocketmqlogs/rocketmq_client.log
INFO级别一直打，想要修改级别，只需要做如下操作即可，在启动类设置属性即可

System.setProperty(ClientLogger.CLIENT_LOG_LEVEL,"WARN");

ClientLogger.CLIENT_LOG_LEVEL对应字符串：rocketmq.client.logLevel
rocketmq中会根据此属性来设置日志运行水平，具体代码如下

ClientLogger.java

private static InternalLogger createLogger(final String loggerName) {
        #这里设置运行级别，所以只需要改变这个属性值即可
        String clientLogLevel = System.getProperty(CLIENT_LOG_LEVEL, "INFO");
        boolean additive = "true".equalsIgnoreCase(System.getProperty(CLIENT_LOG_ADDITIVE));
        InternalLogger logger = InternalLoggerFactory.getLogger(loggerName);
        InnerLoggerFactory.InnerLogger innerLogger = (InnerLoggerFactory.InnerLogger) logger;
        Logger realLogger = innerLogger.getLogger();
        if (rocketmqClientAppender == null) {
            createClientAppender();
        }
        realLogger.addAppender(rocketmqClientAppender);
        realLogger.setLevel(Level.toLevel(clientLogLevel));
        realLogger.setAdditivity(additive);
        return logger;
    }