Spring Boot Batch Procecssing CSV to MongoDB
#3 From MongoDB  
@Bean 
public MongoItemReader reader() { 
MongoItemReader reader = new MongoItemReader<>(); 
reader.setTemplate(mongoTemplate); 
reader.setSort(new HashMap<String, Sort.Direction>() {{ 
put("_id", Direction.DESC); 
}}); 
reader.setTargetType(Employee.class); 
reader.setQuery("{}"); 
return reader; 
} \