FYI, given Maven's transitive dependency rules, writing:

                <dependency>
                  <groupId>ch.qos.logback</groupId>
                  <artifactId>logback-classic</artifactId>
                  <version>0.9.30</version>
                </dependency>

is equivalent to writing:

                <dependency>
                  <groupId>org.slf4j</groupId>
                  <artifactId>slf4j-api</artifactId>
                  <version>1.6.3</version>
                </dependency>
                <dependency>
                  <groupId>ch.qos.logback</groupId>
                  <artifactId>logback-core</artifactId>
                  <version>0.9.30</version>
                </dependency>
                <dependency>
                  <groupId>ch.qos.logback</groupId>
                  <artifactId>logback-classic</artifactId>
                  <version>0.9.30</version>
                </dependency>


As for your actual question, you most probably have an earlier version
of slf4j on your class path. Check your dependency tree with the
command 'mvn dependency:tree'. Also note that Weld bundles SLF4J
within itself.

--
Ceki
http://twitter.com/#!/ceki


On 25/10/2011 12:34 PM, stlecho wrote:

I'm using the underneath listed dependencies and I'm receiving the same error
message: "java.lang.reflect.InvocationTargetException:
java.lang.IllegalAccessError: tried to access field
org.slf4j.impl.StaticLoggerBinder.SINGLETON from class
org.slf4j.LoggerFactory".

What could I do to correct this ?

                <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-api</artifactId>
                <version>1.6.3</version>
                </dependency>
                <dependency>
                <groupId>ch.qos.logback</groupId>
                <artifactId>logback-core</artifactId>
                <version>0.9.30</version>
                </dependency>
                <dependency>
                <groupId>ch.qos.logback</groupId>
                <artifactId>logback-classic</artifactId>
                <version>0.9.30</version>
                </dependency>



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