In Angular for Java Developers Part Four: Connecting to a REST back end you’ll learn how to connect an Angular front end up with a Java (Spring Boot) based back end system using REST. You’ll also learn how to deal with slow and unavailable connections and deal with issues such as CORS for multiple-domain applications, how to set up a back end with Spring Boot, pre-processing data, and pre-fetching data.
Distributed by Manning Publications
This course was created independently by Angular expert Matt Greencroft and is distributed by Manning through our exclusive liveVideo platform.
About the subject
The Angular framework is used by millions of developers, powering frontends from simple prototypes to Google’s own web apps. Prized for its scalability, Angular also offers lightning fast speed and response times and the chance to reuse code for both web and mobile. Best of all, it can be integrated with backends built in Java.About the video
Angular for Java Developers is a five course series that teaches Java programmers how to use Angular and JavaScript to build applications that are maintainable, testable, and secure. In Part Four, you’ll connect your front end to a back end system using REST. You’ll learn about environments, creating, configuring and testing a Spring Boot based REST API, and how to implement REST from Angular.
Table of Contents detailed table of contents
Setting up environments
Creating environment variables
How environments work
Creating our own environments
Selecting an environment to serve
Creating the REST API
Creating a REST method
Testing REST methods
Exercise 1 - creating REST methods
Exercise 1 - solution walkthrough
Adjusting the User object
Connecting to a REST endpoint
Initiating the call to a REST endpoint
Cross Original Resource Sharing (CORS)
Configuring CORS in Spring
Manipulating the REST return data type
Pre-processing the REST return data
Optional calling a REST endpoint exercise
Pre-processing complex data
Dealing with slow and unavailable connections
Dealing with slow REST responses
Catching REST errors
Investigating REST errors
Retrying when an error occurs
Surviving a page refresh
Exercise 2 - Dealing with slow and unavailable connections
Exercise 2 - Solution walkthrough
POSTing and PUTting data
Sending data via REST
Customising data with JavaScript objects
Exercise 3 - Post and putting data
Exercise 3 - Solution walkthrough
Bug fixing
Template Expressions
Implementing DELETE
Completing the users component
Exercise 4 - Implementing REST from Angular
Exercise 4 - Solution walkthrough
Getting a confirmation before deleting
Pre-fetching data
Setting up the edit booking functionality
The concept of pre-fetching data
Pre-fetching data with navigation and a service
Using a resolver
Module summary
What you will learn
- The fourth course in the Angular for Java Developers series
- Creating environment variables
- Initiating the call to a rest endpoint
- Configuring a Spring Boot REST endpoint to work well with Angular
- Setting up your back end correctly with Spring Boot
- Dealing with slow REST responses and catching errors
- Customizing data with JavaScript objects
- Pre-fetching data with navigation and a service
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