please help for below exception aftter executing the gradle build.
FAILURE: Build failed with an exception.
What went wrong:  Could not resolve all dependencies for configuration ‘:xi-util:trunk:compile’.  > Could not resolve group:com.google.guava, module:guava, version:r09. 
 
Required by:
xi-projects.xi-util:trunk:unspecified
Could not GET ‘http://repo1.maven.org/maven2/com/google/guava/guava/r09/gua   va-r09.pom’. Received status code 403 from server: Forbidden ( Forefront TMG den  ied the specified Uniform Resource Locator (URL).  )
 
Could not GET ‘https://repository.jboss.org/nexus/content/repositories/rele   ases/com/google/guava/guava/r09/guava-r09.pom’.
 
             
            
               
               
               
            
            
           
          
            
            
              Sounds like your firewall prevents access to Maven Central, or at least to http://repo1.maven.org/maven2/com/google/guava/guava/r09/guava-r09.pom .
PS: Please use a more specific title for posts.
             
            
               
               
               
            
            
           
          
            
              
                Urs_Reupke  
                (Urs Reupke)
               
              
                  
                    November 1, 2012,  3:58pm
                   
                   
              3 
               
             
            
              I have the same problem (with a different library), without any firewall configured.  Could there be anything else that causes the issue?
It clearly is system-dependent, but I can’t figure out the cause.
             
            
               
               
               
            
            
           
          
            
              
                luke_daley  
                (Luke Daley)
               
              
                  
                    November 1, 2012,  5:09pm
                   
                   
              4 
               
             
            
              We are seeing similar reports from people on certain kinds of systems. Looks like there’s some network issue with the central repo. We are investigating.
             
            
               
               
               
            
            
           
          
            
              
                Urs_Reupke  
                (Urs Reupke)
               
              
                  
                    November 1, 2012,  5:28pm
                   
                   
              5 
               
             
            
              In case it helps you, the issue does not appear to be limited to gradle.  Maven Central just does not respond. Here is wget:
myself@system$ wget http://repo1.maven.org/maven2/org/reflections/reflections/0.9.7/reflections-0.9.7.pom   --2012-11-01 18:27:24–
http://repo1.maven.org/maven2/org/reflections/reflections/0.9.7/reflections-0.9.7.pom 
Resolving repo1.maven.org … 68.232.34.223
Connecting to repo1.maven.org|68.232.34.223|:80… connected.
HTTP request sent, awaiting response…
             
            
               
               
               
            
            
           
          
            
              
                Urs_Reupke  
                (Urs Reupke)
               
              
                  
                    November 1, 2012,  9:54pm
                   
                   
              6 
               
             
            
              Switching to Reflections 0.9.8 solves the issue for me. Green lights on all channels.