Exporting and downloading data as a CSV file in Spring Boot is a core requirement for many enterprise applications. Whether you are providing reports for business users or allowing data migration, implementing this feature involves three main steps: fetching data from a database, converting that data into a CSV format, and streaming it back to the user via a REST API. 1. Project Dependencies
To get started, you will need a Spring Boot project with standard web and JPA dependencies. While you can manually format CSV strings, using a specialized library like OpenCSV or Apache Commons CSV is recommended to handle complex cases like data quoting and escaping. Add the following to your pom.xml : export & download data as csv file in spring boot
com.opencsv opencsv 5.7.1 Use code with caution. 2. The Service Layer: Generating the CSV Exporting and downloading data as a CSV file
The service layer should handle the conversion logic. A common approach is to use StatefulBeanToCsv (OpenCSV) or CSVPrinter (Apache Commons) to map your entity list directly to a CSV stream. How To Export Data To Csv Using Springboot and OpenCSV Project Dependencies To get started, you will need