java Spring从磁盘上的外部文件夹中获取文件和图像，在webapps之外？
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Spring get files and images from external folder on disk, outside webapps?
提问by Edgar
I have webproject which has images inside src/main/webapp folder. I would like to place images in different folder on the disk. But I have no idea how to manage requests to reach this images.
Should I create some kind of httpServletlike shown here: http://balusc.omnifaces.org/2007/07/fileservlet.html
我有 webproject，它在 src/main/webapp 文件夹中有图像。我想将图像放在磁盘上的不同文件夹中。但我不知道如何管理访问这些图像的请求。我应该创建一些httpServlet像这里显示的东西：http: //balusc.omnifaces.org/2007/07/fileservlet.html
Or as I use Spring MVC with java configuration, there is more suitable and simpler way.
或者当我使用带有java配置的Spring MVC时，有更合适和更简单的方法。
Looking forward for your suggestions.
期待您的建议。
回答by Ralph
Use the spring mvc support for static resources, its locationattribute is an Spring Resource, so you could use file:prefix
对静态资源使用 spring mvc 支持，它的location属性是一个 Spring Resource，所以你可以使用file:前缀
<resources mapping="/resources/**" location="file:/my/external/directory/" />
or
或者
@Configuration
@EnableWebMvc
public class WebConfig extends WebMvcConfigurerAdapter {
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/resources/**")
.addResourceLocations("file:/my/external/directory/");
}
}
@See Spring Reference Chapter 6.4 The ResourceLoaderfor a table that list all prefixed for resources
@See Spring Reference Chapter 6.4 The ResourceLoader用于列出所有资源前缀的表
回答by Mr. Mak
In my case I placed js and css resources in webapp and images in e://images/.
For this case I use two mvc:resourcesmapping
就我而言，我将 js 和 css 资源放在 webapp 中，将图像放在e://images/. 对于这种情况，我使用两个mvc:resources映射
<mvc:resources mapping="/resources/**" location="/resources/"/>
<mvc:resources mapping="/images/**" location="file:e://images/"/>
And locate the image of e: > images > abc.jpgusing ....
并使用 ...定位到e: > images > abc.jpg的图像。
<img src="../images/abc.jpg"/>
You could try also <img src="/images/abc.jpg"/> or <img src="images/abc.jpg">(If not work)
你也可以试试<img src="/images/abc.jpg"/> or <img src="images/abc.jpg">（如果不行）
The css/js linked under webapp > resources > js > xyz.jslike below.
在webapp > resources > js > xyz.js下链接的 css/js如下所示。
<script type='text/javascript' src='../resources/js/xyz.js'></script>
