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.

SpringBoot File Upload

Swagger Documentation

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<Entity> parseCsvToEntity(MultipartFile file, Class<Entity> entityClass) throws IOException,  
CsvValidationException {  
    Set<Entity> 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<Entity> 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);  
    }  
 }