SeckillServiceTestorg.seckill.service.SeckillServiceTestinitializationError(org.seckill.service.SeckillServiceTest)java.lang.NoClassDefFoundError: Lorg/slf4j/Logger;?? ?at java.lang.Class.getDeclaredFields0(Native Method)?? ?at java.lang.Class.privateGetDeclaredFields(Unknown Source)?? ?at java.lang.Class.getDeclaredFields(Unknown Source)?? ?at org.junit.runners.model.TestClass.<init>(TestClass.java:49)?? ?at org.junit.runners.ParentRunner.<init>(ParentRunner.java:75)?? ?at org.junit.runners.BlockJUnit4ClassRunner.<init>(BlockJUnit4ClassRunner.java:57)?? ?at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.<init>(SpringJUnit4ClassRunner.java:111)?? ?at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)?? ?at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)?? ?at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)?? ?at java.lang.reflect.Constructor.newInstance(Unknown Source)?? ?at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:29)?? ?at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:21)?? ?at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)?? ?at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)?? ?at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)?? ?at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:26)?? ?at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createUnfilteredTest(JUnit4TestLoader.java:84)?? ?at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:70)?? ?at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:43)?? ?at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:444)?? ?at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)?? ?at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)?? ?at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)Caused by: java.lang.ClassNotFoundException: org.slf4j.Logger?? ?at java.net.URLClassLoader.findClass(Unknown Source)?? ?at java.lang.ClassLoader.loadClass(Unknown Source)?? ?at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)?? ?at java.lang.ClassLoader.loadClass(Unknown Source)?? ?... 24 more