blocks|key|1444260|text|如前所述，log4j.properties应该在类路径中包含的目录中，我想补充的是，在mavenized项目中，src/main/resources/log4j.properties是一个很好的位置|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1444261|entityMap^0|1K|Z|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

As already stated, log4j.properties should be in a directory included in the classpath, I want to add that in a mavenized project a good place can be <code>src/main/resources/log4j.properties</code>

blocks|key|1229006|text|您可以使用VM参数-Dlog4j.configuration="file:/C:/workspace3/local/log4j.properties“指定配置文件位置|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1229007|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

You can specify config file location with VM argument -Dlog4j.configuration="file:/C:/workspace3/local/log4j.properties"

blocks|key|1229401|text|对于基于Maven的项目，将您的资源放在src/+log4j.properties+/log4j.properties中。没别的事可做！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1229402|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

For a Maven Based Project keep your log4j.properties in src/main/resources. Nothing else to do!

blocks|key|1444308|text|如果您将log4j.properties放在src中，则不需要使用以下语句-|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1444309|PropertyConfigurator.configure("log4j.properties");|code-block|syntax|javascript|1444310|它将被自动获取，因为属性文件在类路径中。|1444311|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

If you put log4j.properties inside src, you don't need to use the statement - 

<pre><code>PropertyConfigurator.configure("log4j.properties");
</code></pre>

It will be taken automatically as the properties file is in the classpath.

blocks|key|1444020|text|尝试：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1444021|PropertyConfigurator.configure(getClass().getResource("/controlador/log4j.properties"));|code-block|syntax|javascript|1444022|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try:

<pre><code>PropertyConfigurator.configure(getClass().getResource("/controlador/log4j.properties"));
</code></pre>

blocks|key|1443920|text|该文件应该位于WEB-INF/classes目录中。此目录结构应打包在war文件中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1443921|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

The file should be located in the WEB-INF/classes directory.
This directory structure should be packaged within the war file.

blocks|key|1229059|text|已经提供了一些技术上正确的具体答案，但一般来说，它可以在运行时类路径上的任何地方，即JVM寻找类的任何地方。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1229060|这可以是Eclipse中的/src目录或已部署应用程序中的WEB-INF/classes目录，但最好了解类路径的概念以及将文件放在其中的原因，不要只将WEB-INF/classes当作一个“魔术”目录。|1229061|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

A few technically correct specific answers already provided but in general, it can be anywhere on the runtime classpath, i.e. wherever classes are sought by the JVM.

This could be the /src dir in Eclipse or the WEB-INF/classes directory in your deployed app, but it's best to be aware of the classpath concept and why the file is placed in it, don't just treat WEB-INF/classes as a "magic" directory.

blocks|key|1229238|text|我发现Glassfish默认将Glassfish安装位置\glassfish\domainsyour+domain\作为默认工作目录...如前所述，您可以将log4j.properties文件放在此位置，并使用PropertyConfigurator在代码中对其进行初始化。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1229239|Properties+props+=+System.getProperties();
System.out.println("Current+working+directory+is+"+%2B+props.getProperty("user.dir"));
PropertyConfigurator.configure("log4j.properties");|code-block|syntax|javascript|1229240|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I found that Glassfish by default is looking at [Glassfish install location]\glassfish\domains[your domain]\ as the default working directory... you can drop the log4j.properties file in this location and initialize it in your code using PropertyConfigurator as previously mentioned...

<pre><code>Properties props = System.getProperties();
System.out.println("Current working directory is " + props.getProperty("user.dir"));
PropertyConfigurator.configure("log4j.properties");
</code></pre>

blocks|key|1229436|text|您的标准项目设置将具有类似以下内容的项目结构：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1229437|src/main/java
src/main/resources|code-block|syntax|javascript|1229438|将log4j.properties放在资源文件夹中，如果资源文件夹不存在，则可以创建该文件夹|1229439|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Your standard project setup will have a project structure something like:
<pre><code>src/main/java
src/main/resources
</code></pre>
You place log4j.properties inside the resources folder, you can create the resources folder if one does not exist

blocks|key|1229128|text|我不知道这是不是正确的way.But它解决了我的问题。使用PropertyConfigurator.configure("config//log4j.properties")；将log4j.properties文件放入“项目文件夹”/config|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1229129|它可以与IDE一起工作，但不能在自己运行jar文件时工作。当您自己运行jar文件时，只需将log4j.properties文件复制到jar文件为in.when的文件夹中，jar文件和属性文件在同一目录下即可正常运行。|1229130|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

I don't know this is correct way.But it solved my problem.
put log4j.properties file in "project folder"/config and use PropertyConfigurator.configure("config//log4j.properties");

it will works with IDE but not when run the jar file yourself.
when you run the jar file by yourself just copy the log4j.properties file in to the folder that jar file is in.when the jar and property file in same directory it runs well.

blocks|key|1229659|text|对我来说，当我把文件放在资源文件夹中时，它就起作用了。另外，它是我的项目的一个war文件。我的建议是确保文件名为log4j.properties，因为我的项目无法识别"log4j2.properties“|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1229660|​|1229661|📷|atomic|offset|length|1229662|1229663|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/11f27a78b796dc526a1f3c13c88827c5.png|imageAlt^0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@$G|V|H|W|1|X]]|A|$]]|$1|I|3|C|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q|R|-4]]]]

For me, it worked when I put the file inside the resources folder.
Also, it was a war file for my project. My recommendation is to ensure that the name of the file is log4j.properties, as my project didn't recognize &quot;log4j2.properties&quot;
<a href="https://i.stack.imgur.com/JHwsU.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/JHwsU.png" alt="log4j.properties in src/main/resources" /></a>

blocks|key|1444438|text|实际上，我刚刚在一个标准的Java项目结构中遇到了这个问题，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1444439|\myproject
++++\src
++++\libs
++++\res\log4j.properties|code-block|syntax|javascript|1444440|在Eclipse中，我需要将res文件夹添加到构建路径，但是，在Intellij中，我需要将res文件夹标记为资源，如链接的屏幕截图所示：right+click+on+the+res+folder+and+mark+as+resources。|offset|length|1444441|entityMap|0|LINK|mutability|MUTABLE|url|https://i.stack.imgur.com/ZgPRL.png^0|0|0|1X|1F|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]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

Actually, I've just experienced this problem in a stardard Java project structure as follows:

<pre><code>\myproject
 \src
 \libs
 \res\log4j.properties
</code></pre>

In Eclipse I need to add the res folder to build path, however, in Intellij, I need to mark the res folder as resouces as the linked screenshot shows: <a href="https://i.stack.imgur.com/ZgPRL.png" rel="nofollow noreferrer">right click on the res folder and mark as resources</a>.

blocks|key|1229522|text|如果已经在项目结构中定义了PropertyConfigurator.configure("log4j.properties");，则不需要在Log4J类中指定log4j.properties。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1229523|在Web动态项目中：|1229524|您需要将log4j.properties保存在WebContent+->+WEB-INF+->+log4j.properties下|1229525|我希望这能对你有所帮助。|1229526|entityMap^0|D|1F|0|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Q|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|R|8|@]|D|@]|E|$]]|$1|J|3|K|5|6|7|S|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|M|$]]

You don't need to specify <code>PropertyConfigurator.configure("log4j.properties");</code> in your Log4J class, If you have already defined the log4j.properties in your project structure.

In case of Web Dynamic Project: -

You need to save your log4j.properties under WebContent -> WEB-INF -> log4j.properties

I hope this may help you.

blocks|key|1229561|text|打开spark-shell|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1229562|然后键入System.getenv("SPARK_CONF_DIR")|1229563|这将打印您的log4j.properties应该放到的位置。|1229564|entityMap^0|2|B|0|4|V|0|6|G|0^^$0|@$1|2|3|4|5|6|7|L|8|@$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|R|8|@$9|S|A|T|B|C]]|D|@]|E|$]]|$1|J|3|-4|5|6|7|U|8|@]|D|@]|E|$]]]|K|$]]

Open <code>spark-shell</code>
Then type <code>System.getenv(&quot;SPARK_CONF_DIR&quot;)</code>
That will print where your <code>log4j.properties</code> should go.

I wrote a web service project using netbeans 6.7.1 with glassfish v2.1, put log4j.properties to the root dir of project and use:

<pre><code>static Logger logger = Logger.getLogger(MyClass.class);
</code></pre>

in Constructor:

<pre><code>PropertyConfigurator.configure("log4j.properties");
</code></pre>

and in functions:

<pre><code>logger.info("...");
logger.error("...");
// ...
</code></pre>

but, it is error info(actually, I have tried to put it almost every dir that I could realize):

<pre class="lang-none prettyprint-override"><code>log4j:ERROR Could not read configuration file [log4j.properties].
java.io.FileNotFoundException: log4j.properties (The system cannot find the file specified)
 at java.io.FileInputStream.open(Native Method)
 at java.io.FileInputStream.&lt;init&gt;(FileInputStream.java:106)
 at java.io.FileInputStream.&lt;init&gt;(FileInputStream.java:66)
 at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:297)
 at org.apache.log4j.PropertyConfigurator.configure(PropertyConfigurator.java:315)
 at com.corp.ors.demo.OrsDemo.main(OrisDemo.java:228)
log4j:ERROR Ignoring configuration file [log4j.properties].
log4j:WARN No appenders could be found for logger (com.corp.ors.demo.OrsDemo).
log4j:WARN Please initialize the log4j system properly.
</code></pre>

the example project could be get from <a href="http://www.91files.com/?N3F0QGQPWMDGPBRN0QA8" rel="noreferrer">http://www.91files.com/?N3F0QGQPWMDGPBRN0QA8</a>

Where should I put the log4j.properties file?

Eclipse

Java

我使用netbeans 6.7.1和glassfish v2.1编写了一个web服务项目，将log4j.properties放到项目的根目录中，并使用：static Logger logger = Logger.getLogger(MyClass.class);在构造函数中：PropertyConfigurator.configure("log4j.properties");在函数中：logger

问我应该把log4j.properties文件放在哪里？
EN

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问我应该把log4j.properties文件放在哪里？EN

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问我应该把log4j.properties文件放在哪里？
EN