Don’t expose more than you think needs exposing. Avoid Security Loopholes using @JsonView in Spring Boot
If a certain property on an object is internal to your business and not useful to a consumer, then don’t return it.
Let’s say we’re using the controller to query information and return it to the front end in the JSON data format. Often, some username and password queries are involved in the JSON data, but for security reasons, we may not need all of the
User object user information (for example,
password) to be returned to the front end.
But when we use the
@RestController annotation, the returned
User object is automatically converted to the corresponding JSON array and transmitted to the front end. We can’t remove the unnecessary JSON information, such as the
password, and then return it. In order to solve this JSON data-control problem, we can use the
JsonView annotation for development.
We cover tips and tricks to help you become a more productive web app developer. We build a small web app using Vaadin's Java API and Spring Boot. We show you how to set up IntelliJ IDEA to automatically reload your app and browser as you develop and cover our favorite shortcuts and hacks for productive and enjoyable web app development in Java.
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APIs can be as simple as 1 endpoint for use by 100s of users or as complex as the AWS APIs with 1000s of endpoints and 100s of thousands of users. Building them can mean spending a couple of hours using a low-code platform or months of work using a multitude of tools. Hosting them can be as simple as using one platform that does everything we need or as complex as setting up and managing ingress control, security, caching, failover, metrics, scaling.
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