sbt - Why are new dependencies not picked up by Play 2.3.4 project in Eclipse? -

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I insert my project in build.sbt with some dependencies along with the following lines Updated: 

  libraryDependencies + = "mysql"% "mysql-connector-java"% "5.1.33" libraryDispension + = "org.springframework"% "spring- jdbc"% " 4.1.1.RELEASE "  
  classes_managed  was added to the square path, but the directory does not exist and the lbs are not present.  
 I deleted the  Clear  ad project, all errors (including all references to classes in managed labs),  compile , but still directories and lbs Are unavailable.  
 SBT It seems that the Libs do not have to download ... it is not sure what I am doing.   
 
 
 dependency managed by SBT  ~ / .ivy2 / cache  (this is) Ends in  
 When you declare a project dependency with  libraryDependencies  you should execute  update  (clarify your project assembly such as  package < / Code> or  assembly  or any other order that is pulling them down (via code, is  update  indirectly).  
 There may be a warning that you can change  build.sbt  without  reload , which is a SBT server You must read the build definition again and close the SBT and start.  
 To see if  is based on the library  What is in use is  Show Library Dependency  This is going to show you all dependencies about SBT.  
 Once this is done,  eclipse < Run / code> which creates a file for IDE. Nah load and all should be fine.  
 It is equally or SBT (and partially implemented on Intelij IDEA).

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