Rest file download

Set up application. Create an entity class, DocumnentStorageProperties. There's no need to create the table manually as I have set up spring.

It will fire the DDL command when the application starts to create a table according to the Entity class defined in Java. Create a repository interface for the above entity to get built-in CRUD operations method support. Add our own new method to check whether a particular file is present for that user or not. Create a Service class to store and download files on the server, and to store information in the database.

Here I have used a few more new classes which I will be explaining in a later section of this article, so if you get any compilation issues, ignore them for the moment. There are two important methods in the Service class; one is storeFile , which will store the file at the required location and save the file details in the database. Sign up using Facebook. Sign up using Email and Password.

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Reducing the weight of our footer. Linked 0. Related 1. To save the uploaded file in the DB, we have a model class and we are using byte[] as a data type to save it in the DB. 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.