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I have created a complete form with validation applied before submitting.
You’ll build a simple Spring MVC application that take user input and checks the input using standard validation annotations.
Fields are single data points, forms are a collection of fields.
By the time the form’s will be populated with any data that has survived so far.
You can use any build system you like when building apps with Spring, but the code you need to work with Maven is included here. Or you can build a single executable JAR file that contains all the necessary dependencies, classes, and resources, and run that.
Since it can sometimes be easier to put things into place by seeing each feature in use, here are a series of small examples that use each of the previous features.
Django’s form (and model) fields support use of simple utility functions and classes known as validators.
If you’re not familiar with Maven, refer to Building Java Projects with Maven. This makes it easy to ship, version, and deploy the service as an application throughout the development lifecycle, across different environments, and so forth.
If you want to customize this process, there are various places to make changes, each one serving a different purpose.