spring boot addResourceHandler not working using service

Question

I wanted to upload dynamic images and serve them using <img> tag, so I followed this solution: Spring Boot images uploading and serving

Absolute path of project: /home/vkumar/apps/contest

Absolute path of upload dir: /home/vkumar/apps/contest/uploads

ResourceConfig.java

public class ResourceConfig implements WebMvcConfigurer { @Override public void addResourceHandlers(final ResourceHandlerRegistry registry) { registry.addResourceHandler("/uploads/**").addResourceLocations("file:uploads/"); } }

Then I uploaded a file in uploads dir test.jpg

Now If I go to the server and run the app using the command

mvn spring-boot:run

and open image http://example.com:8080/uploads/test.jpg

all work fine, I can see an image which been uploaded however If I create jar using the command

mvn clean package

I see the error "This application has no explicit mapping for /error, so you are seeing this as a fallback."

The fact that you're using a relative path is probably part of the problem. — chrylis -cautiouslyoptimistic-
– chrylis -cautiouslyoptimistic-, Commented Jan 3, 2019 at 8:40
@chrylis - updated question with absolute path. Tried this registry.addResourceHandler("uploads/**").addResourceLocations("/home/vkumar/apps/contest/uploads/") — VK321
– VK321, Commented Jan 3, 2019 at 8:46
@Wes - yes files are not in jar as those would be uploaded dynamically. — VK321
– VK321, Commented Jan 3, 2019 at 8:47

Olantobi · Accepted Answer · 2019-01-04 06:03:24Z

You can create a controller method to load the uploaded files.

You can follow this guide: https://spring.io/guides/gs/uploading-files/

or this concise example on pastebin. https://pastebin.com/yDr61Emm

Sample code below:

@GetMapping("/pictures/{filename:.+}") @ResponseBody public ResponseEntity<Resource> serveFile(@PathVariable String filename) { Path path = rootLocation.resolve(filename); Resource file = null; try { file = new UrlResource(path.toUri()); } catch (MalformedURLException ex) { Logger.getLogger(UploadController.class.getName()).log(Level.SEVERE, null, ex); } return ResponseEntity.ok().header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + file.getFilename() + "\"").body(file); }

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