log4.properties应该在类路径上吗？ [英] Should log4.properties be on the classpath?

问题描述

我在将log4j.properties文件放在classpath上时遇到了一些问题。我可以在开发时使用它（Eclipse Indigo）但是，当我将我的应用程序导出为JAR时，我不能。

I'm having some problems putting my log4j.properties file on classpath. I can use it when I'm developing (Eclipse Indigo) but, when I export my app as a JAR, I can't.

我手工制作导出的JAR的MANIFEST.MF文件：

I've made by hand a MANIFEST.MF file for the exported JAR:

Manifest-Version: 1.0
Main-Class: main.Program
Class-Path: lib/log4j.properties lib/log4j-1.2.15.jar

然后把JAR放在这个文件组织上：

And then with put the JAR on this file organization:

folder
  |-------- app.jar
  |-------- lib
             |--------- log4j.properties
             |--------- log4j-1.2.15.jar

当我尝试运行app.jar时，他们找到log4j.jar但不是log4j.properties：

When I try to run app.jar, they find log4j.jar but not log4j.properties:

log4j:WARN No appenders could be found for logger (main.Program).
log4j:WARN Please initialize the log4j system properly.

我的 log4j.properties 文件就像这样：

log4j.rootLogger=INFO, stdout, file

PATTERN=[%d] [%p] [%c{1}]: %m%n

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=${PATTERN}

log4j.appender.file=org.apache.log4j.DailyRollingFileAppender
log4j.appender.file.DatePattern='.'yyyy-MM-dd
log4j.appender.file.File=${logger_file_path}
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=${PATTERN}

推荐答案

不要将 log4j.properties 本身放在类路径中，而是包含该文件的目录。

Do not put the log4j.properties itself in the classpath, but the directory that contains that file.

Class-Path: lib lib/log4j-1.2.15.jar

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