Spring Dependency Injection in JSF Validator

[Niall Loughnane]

Hi,

I have a JSF validator and want to inject a dependency injection into it of a component,

Is this possible in a JSF Validator?

The JSF Validator code is:

[code=java]
@FacesValidator("jsfValidator")
public class JSFValidator implements Validator {


public void validate(FacesContext context, UIComponent component, Object value) throws ValidatorException {
.....
}
}
[/code]

And I want to inject a service "ServiceImpl" into the above class,

The validator is called from a XHTML file using:
[code=java]
<h:inputText id="display" value="#{bean.value}" >
<f:validator validatorId="jsfValidator"/>
<f:attribute name="displayName" value="#{displayName}" />
</h:inputText>
[/code]

Thanks in Advance,

Niall

[Bill Gorder]

Spring will only do dependency injection in Spring managed beans.

[Bill Gorder]

You can work around this by using the spring-configured tag with the @Configurable annotation.

See the following from the reference manual.
http://static.springsource.org/spring/docs/3.1.1.RELEASE/spring-framework-reference/html/aop.html#aop-atconfigurable

I have used this for a few things before and it does work.

[Niall Loughnane]

@Configurable is used with AOP, can this also be used with JSF Validators?

[Bill Gorder]

Huh? AOP is aspect oriented programming it is not specific to a specific type of object.

There are different configuration options as defined in the documentation I linked but in short:

1. Put @Configurable on your JSFValidator class.
2. @Autowire in your service in your JSFValidator (Make sure the Service you are autowiring in is registered spring bean)
3. Add <context:spring-configured/> to the application context
4. Make sure spring-aop is in included in your maven dependencies.

I am not familiar with how the validator is created by JSF so no guarantees but it might work.

[Niall Loughnane]

Cool, Thanks for the info, Will give it a go :)

Thanks,

Niall

[Bill Gorder]

I probably should not assume you have the aspectj plugin configured in your maven. I don't have any of my projects in front of me to reference but something like below should work

	<properties>
		<java-version>1.6</java-version>
		<org.springframework-version>3.1.1.RELEASE</org.springframework-version>
		<org.aspectj-version>1.6.11</org.aspectj-version>
	</properties>

		<!-- AspectJ -->
		<dependency>
			<groupId>org.aspectj</groupId>
			<artifactId>aspectjrt</artifactId>
			<version>${org.aspectj-version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aspects</artifactId>
			<version>${org.springframework-version}</version>
		</dependency>
		<!-- Remove once spring-aspects marks JPA as optional -->
		<dependency>
			<groupId>javax.persistence</groupId>
			<artifactId>persistence-api</artifactId>
			<version>1.0</version>
			<scope>provided</scope>
		</dependency>

<build>
		<plugins>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>2.3.2</version>
				<configuration>
					<source>${java-version}</source>
					<target>${java-version}</target>
				</configuration>
			</plugin>
			<plugin>
				<groupId>org.codehaus.mojo</groupId>
				<artifactId>aspectj-maven-plugin</artifactId>
				<version>1.3.1</version>
				<dependencies>
					<!-- Note: Maven 2.0.9 or > required or these are ignored (MNG-2972) -->
					<dependency>
						<groupId>org.aspectj</groupId>
						<artifactId>aspectjrt</artifactId>
						<version>${org.aspectj-version}</version>
					</dependency>
					<dependency>
						<groupId>org.aspectj</groupId>
						<artifactId>aspectjtools</artifactId>
						<version>${org.aspectj-version}</version>
					</dependency>
				</dependencies>
				<executions>
					<execution>
						<goals>
							<goal>compile</goal>
							<goal>test-compile</goal>
						</goals>
					</execution>
				</executions>
				<configuration>
					<outxml>true</outxml>
					<aspectLibraries>
						<aspectLibrary>
							<groupId>org.springframework</groupId>
							<artifactId>spring-aspects</artifactId>
						</aspectLibrary>
					</aspectLibraries>
					<source>1.6</source>
					<target>1.6</target>
				</configuration>
			</plugin>
</build>