Introduction

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Among many other features, JAX-RS 2.0 specification introduces Bean Validation 1.1 support as a mandatory part of implementation. In an effort to fulfill this requirement, Apache CXF provides full-fledge validation support for JAX-RS / JAX-WS endpoints, both for request parameters and response values.

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Dependencies

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Bean Validation support in Apache CXF is implementation-independent and is built solely using API. As such, the only required dependency is:

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<dependency>
+    <groupId>javax.validation</groupId>
+    <artifactId>validation-api</artifactId>
+    <version>1.1.0.Final</version>
+</dependency>
+

+

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API doesn't provide implementation but there are couple of choices to pick from. Please notice that bean validation implementation is taken from the ones present in classpath. If no implementation is detected, bean validation is not available for use and constraints validation won't have any effect.

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Using Hibernate Validator as bean validation provider

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http://www.hibernate.org/subprojects/validator.html

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Hibernate Validator is mature and feature-rich validation provider with full support of Bean Validation 1.1 (as of version 5.x.x which is the reference implementation for JSR 349 - Bean Validation 1.1 API). To use Hibernate Validator in your Apache CXF projects, couple of additional dependencies should be included:

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<dependency>
+    <groupId>org.hibernate</groupId>
+    <artifactId>hibernate-validator</artifactId>
+    <version>5.0.1.Final</version>
+</dependency>
+
+<dependency>
+    <groupId>javax.el</groupId>
+    <artifactId>javax.el-api</artifactId>
+    <version>3.0-b02</version>
+</dependency>
+
+<dependency>
+    <groupId>org.glassfish</groupId>
+    <artifactId>javax.el</artifactId>
+    <version>3.0-b01/version>
+</dependency>
+

+

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Hibernate Validator uses Java Expression Language 3.0 in order to provide better validation messages support so the respective EL 3.0 API and implementation dependencies should be included.

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Using Apache BVal as bean validation provider

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http://bval.apache.org/

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Current stable version of Apache BVal (0.5) doesn't support Bean Validation 1.1 but the upcoming 1.1.0 should have it fully implemented (at the moment 1.1.0-alpha-SNAPSHOT could be used).

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<dependency>
+    <groupId>org.apache.bval</groupId>
+    <artifactId>bval-jsr</artifactId>
+    <version>1.1.0-alpha-SNAPSHOT</version>
+</dependency>
+

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