Spring boot download file url

Below is the REST implementation for this. The implementation is similar to above logic except it has a DB call to save the file instead of saving it to the local file system. You have already noticed the response of the file upload. The below implementation only difers in the process of getting the file from databse rather then a file system.

While downloading multiple files, we can create a zip file in spring boot and download that zip file alone rather then downloading multiple files individually. Here, we will be using ZipOutputStream from java. Below is the example. To test this functionality, we can make a GET request with name as a query parameter which includes all the file names that we want to be included in the final.

We tested the above implementation with Postman. But in my previous tutorial, we have created other tutorials to achieve the same functionality with popular Javascript framework and library. You can follow this article to implement the file uploading client with Angular and this tutorial with React Js.

In this article, we disussed about different ways to upload and download files and images with spring boot REST and tested with Postman. A technology savvy professional with an exceptional capacity to analyze, solve problems and multi-task. Technical expertise in highly scalable distributed systems, self-healing systems, and service-oriented architecture. File Upload React Spring Rest. Spring Boot Multiple Database Configuration. Spring Boot H2 Database Example.

Spring Data Jpa Example. Spring Boot Jms Activemq Example. You can skip if you are not interested or if you want to add front end code also in your application, then please download the Source code from the last section of this article. Note: Video Tutorial is available in the bottom section of this article. Note: You can change the path file. If you are a developer and want to implement an upload feature on your project, then please change the upload storage file location as per your requirement.

Spring Boot provides us a very unique feature to automatically bind or assign the properties values to parameter present in a Pojo Class. To achieve this we need to use the ConfigurationProperties annotation in the Pojo Class as shown below. In order to enable this property, we need to add EnableConfigurationProperties annotation in the Main Class or the class which is tagged with SpringBootApplication or you can add the EnableConfigurationProperties to any other Configuration class.

You have completed all your configuration part, Now we can proceed further to write an actual line of code to upload and download the file. We will create a class named FileStorageService. Now above path, we are extracting the original name of the file that is springBoot.

Similarly, you can easily get an explanation for another line of the code, I have mentioned in the form of a comment. It is very useful for download large file from the server to the client.

Here we will see following three methods to download a file directly to the client easily:. StreamingResponseBody is a functional interface. It can also be used as the assignment target for a method reference or a lambda expression. Here is Spring boot example to download a file but this code can also be used spring MVC as well.

You can download a file directly by using direct download link URL.