public void info(String format, Object argArray[])
{
if(logger.isInfoEnabled())
{
FormattingTuple ft = MessageFormatter.arrayFormat(format, argArray);
logger.log(FQCN, Level.INFO, ft.getMessage(), ft.getThrowable());
}
}
private final Logger log = LoggerFactory.getLogger(getClass());
log.info("backlog={}", new Object[]{backlog});//backlog为Java对象,可重写toString()方法来实现输出具体属性
输出如下：
backlog=Backlog [backlogId=null, employeeId=36, backlogHead=Test, backlogBody=时间：2016-10-1,地点：二楼四号会议室, createDate=Tue Nov 01 16:44:03 CST 2016, scheduledDate=Mon Feb 01 16:44:03 CST 2016]
private final Logger log = LoggerFactory.getLogger(getClass());
log.info("add Backlog -> employeeId={}, backlogHead={}, scheduledDate={}", new Object[]{
backlog.getEmployeeId(), backlog.getBacklogHead(), backlog.getScheduledDate()});
输出如下：
add Backlog -> employeeId=36, backlogHead=Test, scheduledDate=Mon Feb 01 16:44:03 CST 2016]
public void info(String msg)
{
logger.log(FQCN, Level.INFO, msg, null);
}
log.info("backlog=" + backlog);
输出结果：
backlog=Backlog [backlogId=null, employeeId=36, backlogHead=Test, backlogBody=时间：2016-10-1,地点：二楼四号会议室, createDate=Tue Nov 01 16:44:03 CST 2016, scheduledDate=Mon Feb 01 16:44:03 CST 2016]
public void info(String format, Object arg)
{
if(logger.isInfoEnabled())
{
FormattingTuple ft = MessageFormatter.format(format, arg);
logger.log(FQCN, Level.INFO, ft.getMessage(), ft.getThrowable());
}
}
log.info("delete backlog -> backlogId={}", backlogId);
输出如下：
delete backlog -> backlogId=69
总结：如果第二个参数是Object，则第一个String参数里要有”{}”对应，如果是Object[]数组，数组里有几个对象，前面的String参数就要有几个{}花括号对应。
不知道项目里用的是啥 ** 版本的 log4j
居然不能传入变长参数
logger.info(String.format("%s %s %s", username, feature, "1111"));
只好采用这种方式啦
以上为个人经验，希望能给大家一个参考，也希望大家多多支持。
