https://github.com/andresp08/springboot-file-upload

This Spring Boot application is designed to facilitate generic CSV file uploads with a focus on flexibility and ease of use. The primary goal of this project is to allow users to upload CSV files.
https://github.com/andresp08/springboot-file-upload

file-upload java maven opencsv postgresql springboot swagger-ui

Last synced: 8 months ago
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This Spring Boot application is designed to facilitate generic CSV file uploads with a focus on flexibility and ease of use. The primary goal of this project is to allow users to upload CSV files.

• Host: GitHub
• URL: https://github.com/andresp08/springboot-file-upload
• Owner: Andresp08
• Created: 2023-11-13T16:48:02.000Z (about 2 years ago)
• Default Branch: main
• Last Pushed: 2023-11-13T18:46:26.000Z (about 2 years ago)
• Last Synced: 2025-02-28T12:07:40.715Z (12 months ago)
• Topics: file-upload, java, maven, opencsv, postgresql, springboot, swagger-ui
• Language: Java
• Homepage:
• Size: 70.3 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# SpringBoot File Upload

`Swagger Documentation`

![file upload success](https://github.com/Andresp08/springBoot-file-upload/assets/45151760/f1ecd288-3b75-4f25-8a31-0e0ccb470d84)

## Upload files with springboot using opencsv

## If you want to use this generic file upload without the anotation @CsvBindByName, you can replace the GenericCsvParseToEntity methods for:

    public Set parseCsvToEntity(MultipartFile file, Class entityClass) throws IOException,  

    CsvValidationException {  

	    Set entities = new HashSet<>();  

      

		    try (CSVReader reader = new CSVReader(new InputStreamReader(file.getInputStream()))) {  

			    String[] header = reader.readNext();  

			    String[] line;  

			      

			    while ((line = reader.readNext()) != null) {  

			    Entity entity = buildEntity(header, line, entityClass);  

			    entities.add(entity);  

		    }  

	    }    

	    return entities;  

    }  

      

    private Entity buildEntity(String[] header, String[] line, Class entityClass) {  

	    try {  

		    Entity entity = entityClass.getDeclaredConstructor().newInstance();  

		      

		    for (int i = 0; i < header.length; i++) {  

		    String columnName = header[i];  

		    String cellValue = line[i];  

		      

		    Field field = entityClass.getDeclaredField(columnName);  

		    field.setAccessible(true);  

		      

		    if (field.getType() == String.class) {  

			    field.set(entity, cellValue);  

		    } else if (field.getType() == int.class) {  

			    field.set(entity, Integer.parseInt(cellValue));  

		    }    

		    field.setAccessible(false);  

	    }  

	    return entity;  

	    } catch (Exception e) {  

		    throw new RuntimeException("Error al construir entidad", e);  

	    }  

	 }