Before starting this Article i assume that you are having basic latest Angular Project setup . Let me list out the steps if consuming An API:
1. Import HttpClientModule :
This is first step of using Http service in Angular . We have to import the HttpClientModule in the imports section in app.module.ts . After that we need to add this to the Imports section in NgModule (please refer the image attached ).
2. Create A Common Service :
(my service name is PersonService) .
lets create a common service with to consume API web service . In my case i have create a service called PersonService .
3. Import HttpClient in Common service :
Lets create import HttpClient in common service .
4. Create local reference for HttpClient in Common Service .
Create a local reference for the HttpClient inside the constructor .
5. Create a function which triggers the API in common service .
In PersonService i have created a method to call the API web service .
6. Add the Common service in to the component.
7. Create a local Reference for the Common Service inside the constructor .
9. Invoke the service inside the initialization (ngOnInit) , and subscribe for the response .
1. Import HttpClientModule :
2. Create A Common Service :
(my service name is PersonService) .
lets create a common service with to consume API web service . In my case i have create a service called PersonService .
3. Import HttpClient in Common service :
Lets create import HttpClient in common service .
4. Create local reference for HttpClient in Common Service .
Create a local reference for the HttpClient inside the constructor .
5. Create a function which triggers the API in common service .
6. Add the Common service in to the component.
7. Create a local Reference for the Common Service inside the constructor .
9. Invoke the service inside the initialization (ngOnInit) , and subscribe for the response .
After receiving the data from the web service assign it any variable which binded to the Html page .
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