Mybatis的mapper使用springbootTest报错Find why ‘xxxMapper‘ could be null

桃扇骨 2023-09-28 18:32 45阅读 0赞

### 报错：Find why userMapper‘ could be null ###

**在测试类调试报错：**  
![在这里插入图片描述][bc88f30c25ea483995f73a6895d38633.png]  
**报错信息：**

> java.lang.NullPointerException at  
> com.sutao.gdc.GdcApplicationTests.ee(GdcApplicationTests.java:146) at  
> sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at  
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)  
> at  
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)  
> at java.lang.reflect.Method.invoke(Method.java:498) at  
> org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:725)  
> at  
> org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)  
> at  
> org.junit.jupiter.engine.execution.InvocationInterceptorChain V a l i d a t i n g I n v o c a t i o n . p r o c e e d ( I n v o c a t i o n I n t e r c e p t o r C h a i n . j a v a : 131 ) a t o r g . j u n i t . j u p i t e r . e n g i n e . e x t e n s i o n . T i m e o u t E x t e n s i o n . i n t e r c e p t ( T i m e o u t E x t e n s i o n . j a v a : 149 ) a t o r g . j u n i t . j u p i t e r . e n g i n e . e x t e n s i o n . T i m e o u t E x t e n s i o n . i n t e r c e p t T e s t a b l e M e t h o d ( T i m e o u t E x t e n s i o n . j a v a : 140 ) a t o r g . j u n i t . j u p i t e r . e n g i n e . e x t e n s i o n . T i m e o u t E x t e n s i o n . i n t e r c e p t T e s t M e t h o d ( T i m e o u t E x t e n s i o n . j a v a : 84 ) a t o r g . j u n i t . j u p i t e r . e n g i n e . e x e c u t i o n . E x e c u t a b l e I n v o k e r ValidatingInvocation.proceed(InvocationInterceptorChain.java:131) at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149) at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140) at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84) at org.junit.jupiter.engine.execution.ExecutableInvoker ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)atorg.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149)atorg.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140)atorg.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84)atorg.junit.jupiter.engine.execution.ExecutableInvokerReflectiveInterceptorCall.lambda$ofVoidMethod 0 ( E x e c u t a b l e I n v o k e r . j a v a : 115 ) a t o r g . j u n i t . j u p i t e r . e n g i n e . e x e c u t i o n . E x e c u t a b l e I n v o k e r . l a m b d a 0(ExecutableInvoker.java:115) at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda 0(ExecutableInvoker.java:115)atorg.junit.jupiter.engine.execution.ExecutableInvoker.lambdainvoke 0 ( E x e c u t a b l e I n v o k e r . j a v a : 105 ) a t o r g . j u n i t . j u p i t e r . e n g i n e . e x e c u t i o n . I n v o c a t i o n I n t e r c e p t o r C h a i n 0(ExecutableInvoker.java:105) at org.junit.jupiter.engine.execution.InvocationInterceptorChain 0(ExecutableInvoker.java:105)atorg.junit.jupiter.engine.execution.InvocationInterceptorChainInterceptedInvocation.proceed(InvocationInterceptorChain.java:106)  
> at  
> org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)  
> at  
> org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)  
> at  
> org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)  
> at  
> org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)  
> at  
> org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)  
> at  
> org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod 7 ( T e s t M e t h o d T e s t D e s c r i p t o r . j a v a : 214 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . T h r o w a b l e C o l l e c t o r . e x e c u t e ( T h r o w a b l e C o l l e c t o r . j a v a : 73 ) a t o r g . j u n i t . j u p i t e r . e n g i n e . d e s c r i p t o r . T e s t M e t h o d T e s t D e s c r i p t o r . i n v o k e T e s t M e t h o d ( T e s t M e t h o d T e s t D e s c r i p t o r . j a v a : 210 ) a t o r g . j u n i t . j u p i t e r . e n g i n e . d e s c r i p t o r . T e s t M e t h o d T e s t D e s c r i p t o r . e x e c u t e ( T e s t M e t h o d T e s t D e s c r i p t o r . j a v a : 135 ) a t o r g . j u n i t . j u p i t e r . e n g i n e . d e s c r i p t o r . T e s t M e t h o d T e s t D e s c r i p t o r . e x e c u t e ( T e s t M e t h o d T e s t D e s c r i p t o r . j a v a : 66 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . N o d e T e s t T a s k . l a m b d a 7(TestMethodTestDescriptor.java:214) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:210) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:135) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:66) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda 7(TestMethodTestDescriptor.java:214)atorg.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)atorg.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:210)atorg.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:135)atorg.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:66)atorg.junit.platform.engine.support.hierarchical.NodeTestTask.lambdaexecuteRecursively 6 ( N o d e T e s t T a s k . j a v a : 151 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . T h r o w a b l e C o l l e c t o r . e x e c u t e ( T h r o w a b l e C o l l e c t o r . j a v a : 73 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . N o d e T e s t T a s k . l a m b d a 6(NodeTestTask.java:151) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda 6(NodeTestTask.java:151)atorg.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)atorg.junit.platform.engine.support.hierarchical.NodeTestTask.lambdaexecuteRecursively 8 ( N o d e T e s t T a s k . j a v a : 141 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . N o d e . a r o u n d ( N o d e . j a v a : 137 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . N o d e T e s t T a s k . l a m b d a 8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda 8(NodeTestTask.java:141)atorg.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)atorg.junit.platform.engine.support.hierarchical.NodeTestTask.lambdaexecuteRecursively 9 ( N o d e T e s t T a s k . j a v a : 139 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . T h r o w a b l e C o l l e c t o r . e x e c u t e ( T h r o w a b l e C o l l e c t o r . j a v a : 73 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . N o d e T e s t T a s k . e x e c u t e R e c u r s i v e l y ( N o d e T e s t T a s k . j a v a : 138 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . N o d e T e s t T a s k . e x e c u t e ( N o d e T e s t T a s k . j a v a : 95 ) a t j a v a . u t i l . A r r a y L i s t . f o r E a c h ( A r r a y L i s t . j a v a : 1249 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . S a m e T h r e a d H i e r a r c h i c a l T e s t E x e c u t o r S e r v i c e . i n v o k e A l l ( S a m e T h r e a d H i e r a r c h i c a l T e s t E x e c u t o r S e r v i c e . j a v a : 41 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . N o d e T e s t T a s k . l a m b d a 9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at java.util.ArrayList.forEach(ArrayList.java:1249) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda 9(NodeTestTask.java:139)atorg.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)atorg.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)atorg.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)atjava.util.ArrayList.forEach(ArrayList.java:1249)atorg.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)atorg.junit.platform.engine.support.hierarchical.NodeTestTask.lambdaexecuteRecursively 6 ( N o d e T e s t T a s k . j a v a : 155 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . T h r o w a b l e C o l l e c t o r . e x e c u t e ( T h r o w a b l e C o l l e c t o r . j a v a : 73 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . N o d e T e s t T a s k . l a m b d a 6(NodeTestTask.java:155) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda 6(NodeTestTask.java:155)atorg.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)atorg.junit.platform.engine.support.hierarchical.NodeTestTask.lambdaexecuteRecursively 8 ( N o d e T e s t T a s k . j a v a : 141 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . N o d e . a r o u n d ( N o d e . j a v a : 137 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . N o d e T e s t T a s k . l a m b d a 8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda 8(NodeTestTask.java:141)atorg.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)atorg.junit.platform.engine.support.hierarchical.NodeTestTask.lambdaexecuteRecursively 9 ( N o d e T e s t T a s k . j a v a : 139 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . T h r o w a b l e C o l l e c t o r . e x e c u t e ( T h r o w a b l e C o l l e c t o r . j a v a : 73 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . N o d e T e s t T a s k . e x e c u t e R e c u r s i v e l y ( N o d e T e s t T a s k . j a v a : 138 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . N o d e T e s t T a s k . e x e c u t e ( N o d e T e s t T a s k . j a v a : 95 ) a t j a v a . u t i l . A r r a y L i s t . f o r E a c h ( A r r a y L i s t . j a v a : 1249 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . S a m e T h r e a d H i e r a r c h i c a l T e s t E x e c u t o r S e r v i c e . i n v o k e A l l ( S a m e T h r e a d H i e r a r c h i c a l T e s t E x e c u t o r S e r v i c e . j a v a : 41 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . N o d e T e s t T a s k . l a m b d a 9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at java.util.ArrayList.forEach(ArrayList.java:1249) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda 9(NodeTestTask.java:139)atorg.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)atorg.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)atorg.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)atjava.util.ArrayList.forEach(ArrayList.java:1249)atorg.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)atorg.junit.platform.engine.support.hierarchical.NodeTestTask.lambdaexecuteRecursively 6 ( N o d e T e s t T a s k . j a v a : 155 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . T h r o w a b l e C o l l e c t o r . e x e c u t e ( T h r o w a b l e C o l l e c t o r . j a v a : 73 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . N o d e T e s t T a s k . l a m b d a 6(NodeTestTask.java:155) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda 6(NodeTestTask.java:155)atorg.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)atorg.junit.platform.engine.support.hierarchical.NodeTestTask.lambdaexecuteRecursively 8 ( N o d e T e s t T a s k . j a v a : 141 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . N o d e . a r o u n d ( N o d e . j a v a : 137 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . N o d e T e s t T a s k . l a m b d a 8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda 8(NodeTestTask.java:141)atorg.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)atorg.junit.platform.engine.support.hierarchical.NodeTestTask.lambdaexecuteRecursively 9 ( N o d e T e s t T a s k . j a v a : 139 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . T h r o w a b l e C o l l e c t o r . e x e c u t e ( T h r o w a b l e C o l l e c t o r . j a v a : 73 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . N o d e T e s t T a s k . e x e c u t e R e c u r s i v e l y ( N o d e T e s t T a s k . j a v a : 138 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . N o d e T e s t T a s k . e x e c u t e ( N o d e T e s t T a s k . j a v a : 95 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . S a m e T h r e a d H i e r a r c h i c a l T e s t E x e c u t o r S e r v i c e . s u b m i t ( S a m e T h r e a d H i e r a r c h i c a l T e s t E x e c u t o r S e r v i c e . j a v a : 35 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . H i e r a r c h i c a l T e s t E x e c u t o r . e x e c u t e ( H i e r a r c h i c a l T e s t E x e c u t o r . j a v a : 57 ) a t o r g . j u n i t . p l a t f o r m . e n g i n e . s u p p o r t . h i e r a r c h i c a l . H i e r a r c h i c a l T e s t E n g i n e . e x e c u t e ( H i e r a r c h i c a l T e s t E n g i n e . j a v a : 54 ) a t o r g . j u n i t . p l a t f o r m . l a u n c h e r . c o r e . E n g i n e E x e c u t i o n O r c h e s t r a t o r . e x e c u t e ( E n g i n e E x e c u t i o n O r c h e s t r a t o r . j a v a : 107 ) a t o r g . j u n i t . p l a t f o r m . l a u n c h e r . c o r e . E n g i n e E x e c u t i o n O r c h e s t r a t o r . e x e c u t e ( E n g i n e E x e c u t i o n O r c h e s t r a t o r . j a v a : 88 ) a t o r g . j u n i t . p l a t f o r m . l a u n c h e r . c o r e . E n g i n e E x e c u t i o n O r c h e s t r a t o r . l a m b d a 9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda 9(NodeTestTask.java:139)atorg.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)atorg.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)atorg.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)atorg.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35)atorg.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)atorg.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54)atorg.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107)atorg.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88)atorg.junit.platform.launcher.core.EngineExecutionOrchestrator.lambdaexecute 0 ( E n g i n e E x e c u t i o n O r c h e s t r a t o r . j a v a : 54 ) a t o r g . j u n i t . p l a t f o r m . l a u n c h e r . c o r e . E n g i n e E x e c u t i o n O r c h e s t r a t o r . w i t h I n t e r c e p t e d S t r e a m s ( E n g i n e E x e c u t i o n O r c h e s t r a t o r . j a v a : 67 ) a t o r g . j u n i t . p l a t f o r m . l a u n c h e r . c o r e . E n g i n e E x e c u t i o n O r c h e s t r a t o r . e x e c u t e ( E n g i n e E x e c u t i o n O r c h e s t r a t o r . j a v a : 52 ) a t o r g . j u n i t . p l a t f o r m . l a u n c h e r . c o r e . D e f a u l t L a u n c h e r . e x e c u t e ( D e f a u l t L a u n c h e r . j a v a : 114 ) a t o r g . j u n i t . p l a t f o r m . l a u n c h e r . c o r e . D e f a u l t L a u n c h e r . e x e c u t e ( D e f a u l t L a u n c h e r . j a v a : 86 ) a t o r g . j u n i t . p l a t f o r m . l a u n c h e r . c o r e . D e f a u l t L a u n c h e r S e s s i o n 0(EngineExecutionOrchestrator.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86) at org.junit.platform.launcher.core.DefaultLauncherSession 0(EngineExecutionOrchestrator.java:54)atorg.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67)atorg.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52)atorg.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114)atorg.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86)atorg.junit.platform.launcher.core.DefaultLauncherSessionDelegatingLauncher.execute(DefaultLauncherSession.java:86)  
> at  
> org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53)  
> at  
> com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:71)  
> at  
> com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)  
> at  
> com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:220)  
> at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:53)

### 解决方法： ###

![在这里插入图片描述][2374fc1d8205410d9f522dd02d25a0d4.png]  
**自己在测试时，因为在不关联项目中的类时测试，去掉@SpringBootTest注解，运行会快很多，所以事先把它去掉了。  
但是在需要关联项目中的类时，必须加上，比如对user类的增删查改等；  
在测试user类时，忘记加@SpringBootTest注解了，导致报错，把注解加上就好了。  
报错原因有多种情况，视具体情况解决。**

[bc88f30c25ea483995f73a6895d38633.png]: https://img-blog.csdnimg.cn/bc88f30c25ea483995f73a6895d38633.png
[2374fc1d8205410d9f522dd02d25a0d4.png]: https://img-blog.csdnimg.cn/2374fc1d8205410d9f522dd02d25a0d4.png