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MiBand 3 and React-Native (Part 3): Docker, Spring Cloud, and Spring Boot

After significant work on my mistakes described in the second chapter of this series, I decided to move on to the final chapter. In this article, we will focus on my latest findings in the development of the server-side. I am going to show how a React-native application can collect MiBand data and transfer it to a real server.

My server will be based on a microservice solution that can be deployed easily because of docker-compose. For the last 5-8 years, microservices have become a trending solution for solving many issues in server-side development. Its significant capabilities in the scaling of infrastructure and efficient and minimal time consuming for request's processing, motivated me to implement a small server-side API, based on Spring Cloud.

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How to code an image button on a contact form

My contact form starts with:

<form id="form1" method="POST" action="mail.php">

I'd like to replace the last line in my contact form:

<button type="submit" value="Send" style="margin-top:15px; margin-left: 500px; text-align: center;">Send Email</button>

with one that contains 

<img src="images/button_send-email.png" alt="Email">

but have no idea what it should look like. I tried but the button doesn't even show.

Please teach me how this should be done.

Thanks in advance,
Larry

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10 Top APIs for the Internet of Things

Homes, cities, cars, businesses, and workplaces are getting smarter thanks to the Internet of Things (IoT). Developers wishing to create IoT applications and integrate with IoT-enabled devices can look to ProgrammableWeb to find hundreds of suitable Application Programming Interfaces, or APIs, to help them get the job done.