How to integrate Google APIs with Google's application system (1) -introduction to Google APIs

Hello everyone , I meet you again , I'm the king of the whole stack .

Google Our application system provides many applications , example Google advertisement .Google Mission ,Google The calendar .Google blogger,Google Plus,Google Maps and many other applications , See the figure below .

What is listed in the following figure is only Google APIs The tip of the iceberg in （Google API Total support is about 80 Several different kinds and version numbers Google API, I will list in detail in the following chapters ）.

sometimes . We need to integrate the data of these systems into our own systems （ self-developed Web System . Or other systems ）.

This is the time . We have to know how to use Google APIs To help us integrate different systems .

Generally speaking ,Google APIs Generally, two clock mode will be provided for the integration of third-party systems and Applications ,

（1） API Class library of , example Java Class library of ,Ruby Class libraries, etc

（2) RESTFul web service

because RESTFul web The service is relatively simple , It is based on HTTP Protocol for transmission . therefore , Just support HTTP Tools of agreement , Can be used to call and test Google APIs Provided RESTFul web service .

So in my series , I will focus on sharing with you how to call and use Google API exposed RESTFul web service .

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