blocks|key|1848144|text|将配置文件放在webapp+WEB-INF/classes文件夹下，代码如下|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1848145|InputStream+is=+
+++YourClassName.class.getResourceAsStream("myfile.txt");|code-block|syntax|javascript|1848146|如果您想在JSP中使用，也可以尝试其他选项。|1848147|String+myfile=
++application.getRealPath("myfile.txt"));

or

String+myfile+=
++getServletContext().getRealPath("myfile.txt"));|1848148|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Place your config file under your webapp WEB-INF/classes folder and read like this in code

<pre><code>InputStream is= 
 YourClassName.class.getResourceAsStream("myfile.txt");
</code></pre>

You can also try these other option if you want in JSP.

<pre><code>String myfile=
 application.getRealPath("myfile.txt"));

or

String myfile =
 getServletContext().getRealPath("myfile.txt"));
</code></pre>

blocks|key|2685290|text|这是你的选择。基本上有三种方式：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2685291|将其放在类路径中，以便您可以使用类路径相对路径通过ClassLoader#getResourceAsStream()加载它：|offset|length|style|CODE|2685292|Properties+properties+=+new+Properties();
properties.load(Thread.currentThread().getContextClassLoader().getResourceAsStream("filename.properties"));|code-block|syntax|javascript|2685293|这里，filename.properties应该放在webapp的默认类路径所覆盖的根目录中，例如Webapp/WEB-INF/lib、Webapp/WEB-INF/classes、Appserver/lib或JRE/lib。如果属性文件是特定于webapp的，最好将其放在WEB-INF/classes中。如果在IDE中开发项目，也可以将其放在src文件夹(项目的源文件夹)中。|2685294|或者，也可以将其放在默认类路径之外的某个位置，并将其路径添加到appserver的类路径中。例如，在Tomcat中，您可以将其配置为Tomcat/conf/catalina.properties的shared.loader属性。|2685295|2.)将其放在web文件夹(项目的web内容文件夹)中的某个位置，这样您就可以使用web内容相对路径通过ServletContext#getResourceAsStream()加载它：|2685296|Properties+properties+=+new+Properties();
properties.load(getServletContext().getResourceAsStream("/WEB-INF/filename.properties"));|2685297|请注意，我已经演示了将文件放在/WEB-INF文件夹中，否则它将被任何been浏览器公开访问。还要注意，ServletContext位于继承的GenericServlet#getServletContext()仅可访问的任何HttpServlet类中。|2685298|3.)将它放在本地磁盘文件系统中的某个位置，这样您就可以使用本地磁盘文件系统的绝对路径以通常的java.io方式加载它：|2685299|Properties+properties+=+new+Properties();
properties.load(new+FileInputStream("/absolute/path/to/filename.properties");|2685300|这里有许多不同的方法，但这取决于您的需求：|2685301|要从$TOMCAT_HOME/conf+directory加载属性文件，您需要使用java.io.File对象访问它，因为类加载器(就像在this.getClass().getClassLoader().getResourceAsStream(...)中一样)只能从您的类路径(在WEB-INF/classes、WEB-INF/lib或$TOMCAT_HOME/lib下)加载文件(和类)。|2685302|从Tomcat's+config+directory加载文件的最简单示例是：|2685303|File+configDir+=+new+File(System.getProperty("catalina.base"),+"conf");
File+configFile+=+new+File(configDir,+"myconfig.properties");
InputStream+stream+=+new+FileInputStream(configFile);
Properties+props+=+new+Properties();
props.load(stream);|2685304|entityMap^0|0|P|X|0|0|3|J|1D|I|1W|M|2J|D|2X|7|3T|F|0|1U|V|0|1G|10|0|0|F|8|1G|E|1Z|Y|34|B|0|1B|7|0|0|0|2|R|15|C|1X|1L|3W|F|4C|B|4O|G|0|1|P|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1B|8|@$D|1C|E|1D|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|1E|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|1F|8|@$D|1G|E|1H|F|G]|$D|1I|E|1J|F|G]|$D|1K|E|1L|F|G]|$D|1M|E|1N|F|G]|$D|1O|E|1P|F|G]|$D|1Q|E|1R|F|G]]|9|@]|A|$]]|$1|O|3|P|5|6|7|1S|8|@$D|1T|E|1U|F|G]]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1V|8|@$D|1W|E|1X|F|G]]|9|@]|A|$]]|$1|S|3|T|5|J|7|1Y|8|@]|9|@]|A|$K|L]]|$1|U|3|V|5|6|7|1Z|8|@$D|20|E|21|F|G]|$D|22|E|23|F|G]|$D|24|E|25|F|G]|$D|26|E|27|F|G]]|9|@]|A|$]]|$1|W|3|X|5|6|7|28|8|@$D|29|E|2A|F|G]]|9|@]|A|$]]|$1|Y|3|Z|5|J|7|2B|8|@]|9|@]|A|$K|L]]|$1|10|3|11|5|6|7|2C|8|@]|9|@]|A|$]]|$1|12|3|13|5|6|7|2D|8|@$D|2E|E|2F|F|G]|$D|2G|E|2H|F|G]|$D|2I|E|2J|F|G]|$D|2K|E|2L|F|G]|$D|2M|E|2N|F|G]|$D|2O|E|2P|F|G]]|9|@]|A|$]]|$1|14|3|15|5|6|7|2Q|8|@$D|2R|E|2S|F|G]]|9|@]|A|$]]|$1|16|3|17|5|J|7|2T|8|@]|9|@]|A|$K|L]]|$1|18|3|-4|5|6|7|2U|8|@]|9|@]|A|$]]]|19|$]]

It's your choice. There are basically three ways:

Put it in the classpath, so that you can load it by <code>ClassLoader#getResourceAsStream()</code> with a classpath-relative path:

<pre><code>Properties properties = new Properties();
properties.load(Thread.currentThread().getContextClassLoader().getResourceAsStream("filename.properties"));
</code></pre>

Here <code>filename.properties</code> is supposed to be placed in one of the roots which are covered by the default classpath of a webapp, e.g. <code>Webapp/WEB-INF/lib</code>, <code>Webapp/WEB-INF/classes</code>, <code>Appserver/lib</code> or <code>JRE/lib</code>. If the propertiesfile is webapp-specific, best is to place it in <code>WEB-INF/classes</code>. If you're developing a project in an IDE, you can also drop it in src folder (the project's source folder).

You can alternatively also put it somewhere outside the default classpath and add its path to the classpath of the appserver. In for example Tomcat you can configure it as shared.loader property of <code>Tomcat/conf/catalina.properties</code>.

2.) Put it somewhere in web folder (the project's web content folder), so that you can load it by <code>ServletContext#getResourceAsStream()</code> with a webcontent-relative path:

<pre><code>Properties properties = new Properties();
properties.load(getServletContext().getResourceAsStream("/WEB-INF/filename.properties"));
</code></pre>

Note that I have demonstrated to place the file in <code>/WEB-INF</code> folder, otherwise it would have been public accessible by any webbrowser. Also note that the <code>ServletContext</code> is in any <code>HttpServlet</code> class just accessible by the inherited <code>GenericServlet#getServletContext()</code>.

3.) Put it somewhere in local disk file system so that you can load it the usual <code>java.io</code> way with an absolute local disk file system path:

<pre><code>Properties properties = new Properties();
properties.load(new FileInputStream("/absolute/path/to/filename.properties");
</code></pre>

here are many different ways but it depends on your needs:

To load a property file from <code>$TOMCAT_HOME/conf directory</code> you will need to access it using a <code>java.io.File</code> object since the class loader (as in <code>this.getClass().getClassLoader().getResourceAsStream(...)</code> is just able to load files (and classes) from your class path (under <code>WEB-INF/classes</code>, <code>WEB-INF/lib</code> or <code>$TOMCAT_HOME/lib</code>).

The easiest example to load a file from the <code>Tomcat's config directory</code> would be:

<pre><code>File configDir = new File(System.getProperty("catalina.base"), "conf");
File configFile = new File(configDir, "myconfig.properties");
InputStream stream = new FileInputStream(configFile);
Properties props = new Properties();
props.load(stream);
</code></pre>

I setup Tomcat server locally and I placed my text file in my C drive (c:\test\myfile.txt).

In my servlet, I specify the exact path to the file to read it. I successfully do that.

My question is, where should I place the txt file before deployment and how can I navigate to it to read it?
I did a test and ran on my local Tomcat

<pre><code>System.out.println("Working Directory = " +
 System.getProperty("user.dir"));
</code></pre>

and it showed me the Eclipse folder! maybe because I run tomcat through eclipse. So I am sure there is either a spcific folder for data or maybe I should create one somewhere in the file system but I need to the relative path.

Any suggestion is appreciated

How to get to a local file in servlet

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我在本地设置Tomcat服务器，并将文本文件放在我的C盘(c:\test\myfile.txt)中。在我的servlet中，我指定了文件的确切路径来读取它。我成功做到了这一点。我的问题是，在部署之前，我应该将txt文件放在哪里，以及如何导航到它来阅读它？我做了一个测试，并在我本地的Tomcat上运行System.out...

问如何在servlet中访问本地文件
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问如何在servlet中访问本地文件EN