java.lang.Exception: Test class should have exactly one public constructor at org.junit.runners.BlockJUnit4ClassRunner.validateOnlyOneConstructor(BlockJUnit4ClassRunner.java:131) at org.junit.runners.BlockJUnit4ClassRunner.validateConstructor(BlockJUnit-慕课网

java.lang.Exception: Test class should have exactly one public constructor at org.junit.runners.BlockJUnit4ClassRunner.validateOnlyOneConstructor(BlockJUnit4ClassRunner.java:131) at org.junit.runners.BlockJUnit4ClassRunner.validateConstructor(BlockJUnit

来源：2-1 IOC及Bean容器

嘛哩嘛哩

2017-01-09 17:05

java.lang.Exception: Test class should have exactly one public constructor
   at org.junit.runners.BlockJUnit4ClassRunner.validateOnlyOneConstructor(BlockJUnit4ClassRunner.java:131)
   at org.junit.runners.BlockJUnit4ClassRunner.validateConstructor(BlockJUnit4ClassRunner.java:120)
   at org.junit.runners.BlockJUnit4ClassRunner.collectInitializationErrors(BlockJUnit4ClassRunner.java:101)
   at org.junit.runners.ParentRunner.validate(ParentRunner.java:344)
   at org.junit.runners.ParentRunner.<init>(ParentRunner.java:74)
   at org.junit.runners.BlockJUnit4ClassRunner.<init>(BlockJUnit4ClassRunner.java:55)
   at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
   at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
   at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
   at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
   at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:31)
   at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:24)
   at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
   at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:29)
   at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
   at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:24)
   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:675)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

写回答关注

4回答

等待叶落

2020-10-21 11:44:00

很简单，spring boot版本不一样，2.1.*的Test类上有public，2.2.*上没有

0 0
慕粉192325961

2018-04-27 19:14:00

我的问题也是这个

0 0
Terence_Jing

2017-01-09 21:40:04

我也遇到这个了，意思是，你在Bean类中同时用到了构造器注入和设值注入，但是在配置文件中没没有配置构造注入的Bean,要么都删了，要么都添加上，不配套的话就会出现这个错误。

0 0
Terence_Jing

2017-01-09 21:39:35

我也遇到这个了，意思是，你在Bean类中同时用到了构造器注入和设值注入，但是在配置文件中没没有配置构造注入的Bean,要么都删了，要么都添加上，不配套的话就会出现在合格错误。

2 0

Terenc... 回复嘛哩嘛哩

跟着视频写的不一定正确，有时候镜头跑的快，漏了忘了也是有可能，我也遇到好多次，跟着视频写，调试好久，错了很多

2017-02-08 17:08:25

共 2 条回复 >

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