在一次哦测试中，sonar-qube总是报Use the built-in formatting to contruct this argument,

在网上查了一下，原来它是推荐这样做：

log.info("#{} {} is completed.",index,task);

下面是全部代码，供你参考：

package logbackCfg;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class BuildinTester {
private final static Logger log = LoggerFactory.getLogger(BuildinTester.class);

public static void main(String\[\] args) {  
    int index=3;  
    String task="cleanExpiredData";

    // Traditional way to contruct a log msg  
    log.info("#"+index+" "+task+" is completed.");

    // Built-in formatting to contruct a log msg  
    log.info("#{} {} is completed.",index,task);  
}  

}

--2020-02-28--