title: process excel file and save in mongoDb
body: <p>I have a excel file as shown below which needs to be processed and saved in mongodb. i am using spring MongoTemplate for CRUD operations on mongoDB.</p>
  
  <p><img src="https://i.stack.imgur.com/Pg6ap.jpg" alt="the excel file to be processed"></p>
  
  <p>The mongo db document is as shown below. </p>
  
  <p><img src="https://i.stack.imgur.com/Zk6pb.jpg" alt="Mongo document"></p>
  
  <p>I know that we can process the excel using apache POI and I have iterated through the entire file and got the data printed on the console. But I am not clear on how to handle this in the best possible way. </p>
  
  <p>how can I insert these data into mongoDB ?</p>