如何在Tomcat上的Web应用程序中提供静态文件 [英] How to serve static files in my web application on Tomcat

问题描述

我在eclipse中有这个基于servlet的web应用程序项目，想要附加一些html标签，如< script src =Chart.js> 。

I have this servlet based web application project in eclipse and want to append some html tags like <script src="Chart.js">.

文件夹结构为：

• C：/apache-tomcat-7.0 .53 /


• 我的工作区位于D：/../../ workplace / CpdApplication / src / cpd / MyServlet.java


• cpd包含：MyServlet.java，Chart.js和其他文件。


• CpdApplication / WebContent / META-INF / web.xml

• C:/apache-tomcat-7.0.53/
• my workspace is in D:/../../workplace/CpdApplication/src/cpd/MyServlet.java
• cpd contains: MyServlet.java, Chart.js and other files.
• CpdApplication/WebContent/META-INF/web.xml

我有一些路径问题，我无法解决它们，我一遍又一遍地搜索但仍然无法工作，我得到
a 404（未找到） http：// localhost：8080 / CpdApplication / Chart.js 。

I have some path problems, and I can't resolve them, I searched over and over again and still not working, I get a 404 (Not Found) for http://localhost:8080/CpdApplication/Chart.js.

问题是当我想追加< script src ='Chart.js'>< / script> ，Tomcat无法解析 Chart.js 静态文件。 / p>

The problem is when I want to append <script src='Chart.js'></script>, Tomcat cannot resolve the Chart.js static file.

推荐答案

我有一些路径问题，我无法解决它们，我搜索过
及以上仍然没有工作，我得到404（未找到）
... / CpdApplication / Chart.js

I have some path problems, and I can't resolve them, I searched over and over again and still not working, I get a 404 (Not Found) for .../CpdApplication/Chart.js

确实，当写< script src =/ Chart.js/> 时，你告诉浏览器要做它自己的，单独的HTTP请求来获取JavaScript文件。为此起作用：

Indeed, when writing <script src="/Chart.js"/> you are telling the browser to make its own, separate HTTP request to get the JavaScript file. For this to work:

• servlet容器需要能够提供静态文件


• 要为此，您需要在web.xml中包含 servlet-mapping 以提供静态文件（即默认 servlet）。

• The servlet container needs to be able to serve static files
• To this end, you need to have a servlet-mapping inside your web.xml to serve static files (ie. the default servlet).

这应该做：

<servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>/js/*</url-pattern>
</servlet-mapping>

然后将 Chart.js 放入以下文件夹： WebContent / js / ，它应该可以工作。

Then place your Chart.js in the following folder: WebContent/js/ and it should work.

编辑：当然，您需要更新< script> HTML中的标记。此外，请确保重新部署Web应用程序以更新servlet容器上的web.xml（我假设为Tomcat）。

EDIT: Of course, you'll need to update the <script> tag in your HTML. Also, make sure that you redeploy your web app to update web.xml on your servlet container (Tomcat I presume).

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