Core JavaServer Faces, Second Edition

Chapter 6. Conversion and Validation

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• “Overview of the Conversion and Validation Process” on page 219

• “Using Standard Converters” on page 221

• “Using Standard Validators” on page 233

• “Programming with Custom Converters and Validators” on page 240

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In this chapter, we discuss how form data is converted to Java objects and how the conversion results are checked for correctness. The JSF container carries out these steps before updating the model, so you can rest assured that invalid inputs will never end up in the business logic.

We first look at the concepts behind the conversion and validation process. Then we discuss the standard tags that JSF provides for conversion and validation. These tags ...