如何在Spring Boot 2.0 Web应用程序中为图像存储指定外部位置? [英] How to specify external location for image store in Spring Boot 2.0 web app?

问题描述

目前，我的图像存储在项目目录的/src/main/resources/static/myimages中.现在，我想将它们移动到/Users/tom/myimages中的项目目录之外，以便在HTML标记中的img标签src ="/myimages/subdir/first.jpg"中从/Users/tom/myimages/中加载subdir/first.jpg.如何在Spring Boot 2.0项目中实现这一目标?

Currently I have images stored in /src/main/resources/static/myimages in the project directory. Now I want to move these outside of project directory like in /Users/tom/myimages so that in img tag src="/myimages/subdir/first.jpg" in the HTML markup will be loaded from /Users/tom/myimages/subdir/first.jpg. How can I achieve this in spring boot 2.0 project?

这将允许我添加新图像，而不必在生产环境中重新编译项目.

This will allow me to add new images without having to recompile the project in production environment.

推荐答案

您可以通过PathResourceResolver实现此目的，这是最简单的解析器，其目的是在给定公共URL模式的情况下查找资源.实际上，这是默认解决方案.

You could achieve this, by PathResourceResolver which is the simplest resolver and its purpose is to find a resource given a public URL pattern. In fact, this is the default resolve.

@Configuration
@EnableWebMvc
public class MvcConfig implements WebMvcConfigurer {
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
       registry
               .addResourceHandler("/myimages/**")
               .addResourceLocations("/Users/tom/myimages")
               .setCachePeriod(3600)
               .resourceChain(true)
               .addResolver(new PathResourceResolver());
    }
} 

说明:

• 我们正在资源链中将PathResourceResolver注册为其中唯一的ResourceResolver.
• 与PathResourceResolver一起在/Users/tom/myimages文件夹中找到/first.jpg文件的html代码

Description:

• We are registering the PathResourceResolver in the resource chain as the sole ResourceResolver in it.
• the html code that, in conjunction with the PathResourceResolver, locates the /first.jpg file in the /Users/tom/myimages folder

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