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，并且想要附加一些 html 标签，例如 <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/
- 我的工作区在 D:/../../workplace/CpdApplication/src/cpd/MyServlet.java
- cpd 包含:MyServlet.java、Chart.js 等文件.
- 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，但仍然无法正常工作，我明白了http://localhost:8080/CpdApplication/Chart.js 的 404(未找到).
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>时，Tomcat无法解析Chart.js静态文件.
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，我搜索了一遍又一遍，但仍然无法正常工作，我收到了 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，在编写 <script src="/Chart.js"/> 时，您是在告诉浏览器发出自己的、单独的 HTTP 请求以获取 JavaScript 文件.为此:
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
- 为此，您需要在 web.xml 中有一个 servlet-mapping 来提供静态文件(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).
应该这样做:
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>/js/*</url-pattern>
</servlet-mapping>
然后将您的 Chart.js 放在以下文件夹中:WebContent/js/ 并且它应该可以工作.
Then place your Chart.js in the following folder: WebContent/js/ and it should work.
EDIT:当然，您需要更新 HTML 中的
