log4j.properties中的这些属性是什么意思? [英] What does these properties in log4j.properties mean?

问题描述

log4j.rootCategory字段可以具有4个不同的值，即:

log4j.rootCategory feild in log4j.properties can have 4 different values namely:

DEBUG,WARN,INFO and ERROR.您能告诉我哪种情况最适合吗?

DEBUG,WARN,INFO and ERROR. Can you tell me which is most suitable for what cases?

推荐答案

从最不严重到最严重:

ALL < DEBUG < INFO < WARN < ERROR < FATAL < OFF

如果您选择其中之一，log4j将打印该类型和更严重类型的所有消息.

If you choose one of them log4j will print all messages of that type and of more severe type.

目的:

• ALL:打印所有消息*
• DEBUG:调试消息
• INFO:没问题的信息
• WARN:不是错误，而是可能导致将来出现错误的东西
• ERROR:出了点问题，应用程序管理的问题，应用程序是否可以停止，通常必须报告
• FATAL:导致应用程序崩溃的错误
• OFF:不打印任何消息*

• ALL: prints all messages*
• DEBUG: debug messages
• INFO: information that aren't problems
• WARN: not error but something that could cause a future error
• ERROR: something went wrong, a problem that the application manages, the application could be stopped or not, usually must be reported
• FATAL: an error that crashes the application
• OFF: prints no messages*

(*)这些只是关键字；对于这些类别，没有方法all(msg)和off(msg)，就像我们有error(msg)或debug(msg)一样.

(*) these are only keywords; for these categories there are no methods all(msg) and off(msg), like we have error(msg) or debug(msg).

通常在开发过程中，我设置为ALL或DEBUG，而在部署时，我设置为INFO或WARN.

Usually during development I set to ALL or DEBUG, while when deployed I set to INFO or WARN.

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