blocks|key|992904|text|将log4j.properties放在运行时类路径中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|992905|这个forum展示了一些关于可能的方法的文章。|992906|entityMap|0|LINK|mutability|MUTABLE|url|https://www.coderanch.com/t/106042/vc/Eclipse-add-log-properties-classpath^0|1|G|0|2|5|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|S|8|@]|D|@$9|T|A|U|1|V]]|E|$]]|$1|H|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]]]

Put <code>log4j.properties</code> in the runtime classpath.

This <a href="https://www.coderanch.com/t/106042/vc/Eclipse-add-log-properties-classpath" rel="nofollow noreferrer">forum</a> shows some posts about possible ways to do it.

blocks|key|992963|text|最好的方法是创建一个名为resources的特殊源文件夹，并将其用于包括log4j.properties在内的所有资源。所以，就把它放在那里吧。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|992964|在由Dynamic+Web+Project自动创建的Java+Resources文件夹上，右键单击并添加一个新的Source文件夹，并将其命名为'resources‘。然后，这里的文件将被导出到classes目录的war文件中|992965|entityMap^0|C|9|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|N|8|@]|D|@]|E|$]]]|I|$]]

The best way is to create special source folder named <code>resources</code> and use it for all resource including log4j.properties. So, just put it there. 

On the Java Resources folder that was automatically created by the Dynamic Web Project, right click and add a new Source Folder and name it 'resources'. Files here will then be exported to the war file to the classes directory

blocks|key|778659|text|IMO最安全的方法是指向run/debug配置中的文件|type|unstyled|depth|inlineStyleRanges|entityRanges|data|778660|-Dlog4j.configuration=file:mylogging.properties|code-block|syntax|javascript|778661|好了！请注意:在使用eclipse启动配置时，file:协议的规范是必需的。|offset|length|style|CODE|778662|这样，日志记录器将不会捕获类路径中以前出现的任何logging.properties，也不会捕获JDK中的默认one。|778663|另外，考虑实际使用log4j.xml，它具有更丰富的表达式语法，并且允许更多的东西(log4j.xml比log4j.properties优先。|778664|entityMap^0|0|0|N|5|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@$I|V|J|W|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

The safest way IMO is to point at the file in your run/debug config

<pre><code>-Dlog4j.configuration=file:mylogging.properties
</code></pre>

! Be aware: when using the eclipse launch configurations the specification of the <code>file:</code> protocol is mandatory.

In this way the logger will not catch any logging.properties that come before in the classpath nor the default one in the JDK.

Also, consider actually use the log4j.xml which has a richer expression syntax and will allow more things (log4j.xml tahe precedence over log4j.properties.

blocks|key|993069|text|您可以根据需要将其添加到任何位置，在运行项目时，请配置类路径并添加log4j.properties文件的位置，方法是单击:运行->运行配置->类路径选项卡->单击用户条目->高级->选择添加文件夹->选择log4j.properties文件的位置|type|unstyled|depth|inlineStyleRanges|entityRanges|data|993070|然后运行->+OK+->|993071|并且它应该被加载|993072|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

you can add it any where you want, when you run your project, configure the classpath and add the location of the log4j.properties files by clicking on: 
Run->Run Configuration -> [classpath tab] -> click on user Entries -> Advanced -> Select Add Folder -> select the location of your log4j.properties file

and then -> OK -> run

and it should get loaded

blocks|key|778783|text|通常我会把它放在一个特殊的文件夹"res“或"resources”中，但对于web应用程序，我会将带有ant任务的log4j.properties复制到WEB-INF/classes目录中。这与让文件位于src/文件夹的根目录相同，但通常我更喜欢将其放在一个专用的文件夹中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|778784|对于Maven，通常放在文件夹src/main/resources中，就像这个other+post中回答的那样。那里的所有资源都将转到根类路径中的构建(例如target/classes/)|778785|如果你想要一个强大的记录器，你也可以看看slf4j+library，它是一个记录器的外观，可以在后面使用log4j实现。|778786|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/6757339/628006|1|https://www.slf4j.org/^0|1L|G|0|F|I|26|F|13|A|0|0|K|D|1|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@$9|11|A|12|1|13]]|E|$]]|$1|H|3|I|5|6|7|14|8|@]|D|@$9|15|A|16|1|17]]|E|$]]|$1|J|3|-4|5|6|7|18|8|@]|D|@]|E|$]]]|K|$L|$5|M|N|O|E|$P|Q]]|R|$5|M|N|O|E|$P|S]]]]

In general I put it in a special folder "res" or "resources as already said, but after for the web application, I copy the <code>log4j.properties</code> with the ant task to the WEB-INF/classes directory. It is the same like letting the file at the root of the src/ folder but generally I prefer to see it in a dedicated folder.

With Maven, the usual place to put is in the folder <code>src/main/resources</code> as answered in this <a href="https://stackoverflow.com/a/6757339/628006">other post</a>.
All resources there will go to your build in the root classpath (e.g. <code>target/classes/</code>)

If you want a powerful logger, you can have also a look to <a href="https://www.slf4j.org" rel="nofollow noreferrer">slf4j library</a> which is a logger facade and can use the log4j implementation behind.

blocks|key|778842|text|您不希望将log4j.properties与您的项目打包为可部署的--正如其他发布者所提到的，这不是一个好主意。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|778843|找到Eclipse在运行您的应用程序时所指向的根Tomcat安装，并将log4j.properties文件添加到那里的适当位置。对于Tomcat7，正确的位置是|778844|${TOMCAT_HOME}/lib|778845|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

You do not want to have the log4j.properties packaged with your project deployable -- that is a bad idea, as other posters have mentioned.

Find the root Tomcat installation that Eclipse is pointing to when it runs your application, and add the log4j.properties file in the proper place there. For Tomcat 7, the right place is

${TOMCAT_HOME}/lib

Where in my Eclipse project should I add the <code>log4j.properties</code> file so that it will work as intended?

Where is the correct location to put Log4j.properties in an Eclipse project?

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