使用spring and its testing utilities，我想创建一个切片测试来检查模型的序列化。
我正在使用依赖项：
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<version>2.0.0.RELEASE</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.9.4</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.9.4</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.4</version>
</dependency>
使用以下测试类，我无法自动装配我的JacksonTester并收到NoSuchBeanDefinitionException异常：
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.json.JsonTest;
import org.springframework.boot.test.json.JacksonTester;
import org.springframework.boot.test.json.JsonContent;
import org.springframework.test.context.junit4.SpringRunner;
@RunWith(SpringRunner.class)
@JsonTest
public class MyTest
{
@Autowired
private JacksonTester<MyClass> tester;
@Test
public void myTest()
{
// test logic
}
}
和跟踪：
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.0.0.RELEASE)
2018-03-29 17:25:35.319 INFO 3480 --- [ main] MyTest : Starting MyTest on Laptop.local with PID 3480 (started by Matt in /path/to/project)
2018-03-29 17:25:35.322 INFO 3480 --- [ main] MyTest : No active profile set, falling back to default profiles: default
2018-03-29 17:25:35.334 INFO 3480 --- [ main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@1e13529a: startup date [Thu Mar 29 17:25:35 BST 2018]; root of context hierarchy
2018-03-29 17:25:35.843 INFO 3480 --- [ main] MyTest : Started MyTest in 0.756 seconds (JVM running for 1.778)
============================
CONDITIONS EVALUATION REPORT
============================
Positive matches:
-----------------
JacksonAutoConfiguration matched:
- @ConditionalOnClass found required class 'com.fasterxml.jackson.databind.ObjectMapper'; @ConditionalOnMissingClass did not find unwanted class (OnClassCondition)
JsonTestersAutoConfiguration matched:
- @ConditionalOnClass found required class 'org.assertj.core.api.Assert'; @ConditionalOnMissingClass did not find unwanted class (OnClassCondition)
- @ConditionalOnProperty (spring.test.jsontesters.enabled) matched (OnPropertyCondition)
JsonTestersAutoConfiguration.JacksonJsonTestersConfiguration matched:
- @ConditionalOnClass found required class 'com.fasterxml.jackson.databind.ObjectMapper'; @ConditionalOnMissingClass did not find unwanted class (OnClassCondition)
NoOpCacheConfiguration matched:
- Cache org.springframework.boot.autoconfigure.cache.NoOpCacheConfiguration NONE cache type (CacheCondition)
Negative matches:
-----------------
CacheAutoConfiguration:
Did not match:
- @ConditionalOnBean (types: org.springframework.cache.interceptor.CacheAspectSupport; SearchStrategy: all) did not find any beans of type org.springframework.cache.interceptor.CacheAspectSupport (OnBeanCondition)
Matched:
- @ConditionalOnClass found required class 'org.springframework.cache.CacheManager'; @ConditionalOnMissingClass did not find unwanted class (OnClassCondition)
CacheAutoConfiguration.CacheManagerJpaDependencyConfiguration:
Did not match:
- @ConditionalOnClass did not find required class 'org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean' (OnClassCondition)
- Ancestor org.springframework.boot.autoconfigure.cache.CacheAutoConfiguration did not match (ConditionEvaluationReport.AncestorsMatchedCondition)
CaffeineCacheConfiguration:
Did not match:
- @ConditionalOnClass did not find required classes 'com.github.benmanes.caffeine.cache.Caffeine', 'org.springframework.cache.caffeine.CaffeineCacheManager' (OnClassCondition)
CouchbaseCacheConfiguration:
Did not match:
- @ConditionalOnClass did not find required classes 'com.couchbase.client.java.Bucket', 'com.couchbase.client.spring.cache.CouchbaseCacheManager' (OnClassCondition)
EhCacheCacheConfiguration:
Did not match:
- @ConditionalOnClass did not find required classes 'net.sf.ehcache.Cache', 'org.springframework.cache.ehcache.EhCacheCacheManager' (OnClassCondition)
GenericCacheConfiguration:
Did not match:
- Cache org.springframework.boot.autoconfigure.cache.GenericCacheConfiguration unknown cache type (CacheCondition)
GsonAutoConfiguration:
Did not match:
- @ConditionalOnClass did not find required class 'com.google.gson.Gson' (OnClassCondition)
HazelcastCacheConfiguration:
Did not match:
- @ConditionalOnClass did not find required classes 'com.hazelcast.core.HazelcastInstance', 'com.hazelcast.spring.cache.HazelcastCacheManager' (OnClassCondition)
InfinispanCacheConfiguration:
Did not match:
- @ConditionalOnClass did not find required class 'org.infinispan.spring.provider.SpringEmbeddedCacheManager' (OnClassCondition)
JCacheCacheConfiguration:
Did not match:
- @ConditionalOnClass did not find required classes 'javax.cache.Caching', 'org.springframework.cache.jcache.JCacheCacheManager' (OnClassCondition)
JacksonAutoConfiguration.Jackson2ObjectMapperBuilderCustomizerConfiguration:
Did not match:
- @ConditionalOnClass did not find required class 'org.springframework.http.converter.json.Jackson2ObjectMapperBuilder' (OnClassCondition)
JacksonAutoConfiguration.JacksonObjectMapperBuilderConfiguration:
Did not match:
- @ConditionalOnClass did not find required class 'org.springframework.http.converter.json.Jackson2ObjectMapperBuilder' (OnClassCondition)
JacksonAutoConfiguration.JacksonObjectMapperConfiguration:
Did not match:
- @ConditionalOnClass did not find required class 'org.springframework.http.converter.json.Jackson2ObjectMapperBuilder' (OnClassCondition)
JacksonAutoConfiguration.JodaDateTimeJacksonConfiguration:
Did not match:
- @ConditionalOnClass did not find required classes 'org.springframework.http.converter.json.Jackson2ObjectMapperBuilder', 'org.joda.time.DateTime', 'com.fasterxml.jackson.datatype.joda.ser.DateTimeSerializer', 'com.fasterxml.jackson.datatype.joda.cfg.JacksonJodaDateFormat' (OnClassCondition)
JacksonAutoConfiguration.ParameterNamesModuleConfiguration:
Did not match:
- @ConditionalOnClass did not find required class 'com.fasterxml.jackson.module.paramnames.ParameterNamesModule' (OnClassCondition)
JsonTestersAutoConfiguration.GsonJsonTestersConfiguration:
Did not match:
- @ConditionalOnClass did not find required class 'com.google.gson.Gson' (OnClassCondition)
JsonTestersAutoConfiguration.JacksonJsonTestersConfiguration#jacksonTesterFactoryBean:
Did not match:
- @ConditionalOnBean (types: com.fasterxml.jackson.databind.ObjectMapper; SearchStrategy: all) did not find any beans of type com.fasterxml.jackson.databind.ObjectMapper (OnBeanCondition)
JsonTestersAutoConfiguration.JsonbJsonTesterConfiguration:
Did not match:
- @ConditionalOnClass did not find required class 'javax.json.bind.Jsonb' (OnClassCondition)
JsonbAutoConfiguration:
Did not match:
- @ConditionalOnClass did not find required class 'javax.json.bind.Jsonb' (OnClassCondition)
RedisCacheConfiguration:
Did not match:
- Cache org.springframework.boot.autoconfigure.cache.RedisCacheConfiguration unknown cache type (CacheCondition)
SimpleCacheConfiguration:
Did not match:
- Cache org.springframework.boot.autoconfigure.cache.SimpleCacheConfiguration unknown cache type (CacheCondition)
Exclusions:
-----------
None
Unconditional classes:
----------------------
None
2018-03-29 17:25:35.858 ERROR 3480 --- [ main] o.s.t.c.TestContextManager : Caught exception while allowing TestExecutionListener [org.springframework.boot.test.autoconfigure.SpringBootDependencyInjectionTestExecutionListener@f73dcd6] to prepare test instance [MyTest@5c87bfe2]
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'MyTest': Unsatisfied dependency expressed through field 'tester'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'org.springframework.boot.test.json.JacksonTester<MyClass>' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:587) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:91) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:373) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1344) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireBeanProperties(AbstractAutowireCapableBeanFactory.java:400) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:118) ~[spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83) ~[spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.boot.test.autoconfigure.SpringBootDependencyInjectionTestExecutionListener.prepareTestInstance(SpringBootDependencyInjectionTestExecutionListener.java:44) ~[spring-boot-test-autoconfigure-2.0.0.RELEASE.jar:2.0.0.RELEASE]
at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:242) [spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:227) [spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289) [spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) [junit-4.12.jar:4.12]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291) [spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:246) [spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97) [spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) [junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) [junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) [junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) [junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) [junit-4.12.jar:4.12]
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) [spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) [spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.junit.runners.ParentRunner.run(ParentRunner.java:363) [junit-4.12.jar:4.12]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190) [spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) [.cp/:?]
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) [.cp/:?]
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:538) [.cp/:?]
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:760) [.cp/:?]
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:460) [.cp/:?]
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:206) [.cp/:?]
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'org.springframework.boot.test.json.JacksonTester<MyClass>' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1509) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1104) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1065) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:584) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
... 29 more
2018-03-29 17:25:35.869 INFO 3480 --- [ Thread-2] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@1e13529a: startup date [Thu Mar 29 17:25:35 BST 2018]; root of context hierarchy
根据文档，似乎没有像JsonTest注释那样需要任何其他配置，spring应该自动配置我需要的所有东西，在我的情况下只有JacksonTester。但是，我可以看到配置中存在一些负匹配，特别是对于JsonTestersAutoConfiguration。
我错过了一些弹簧配置吗？是否缺少任何依赖？或任何依赖不兼容？
提前致谢。
答案 0 :(得分：4)
上下文中没有ObjectMapper bean阻止创建任何JacksonTester。您可以在自动配置报告中看到这一点：
JsonTestersAutoConfiguration.JacksonJsonTestersConfiguration#jacksonTesterFactoryBean:
Did not match:
- @ConditionalOnBean (types: com.fasterxml.jackson.databind.ObjectMapper; SearchStrategy: all) did not find any beans of type com.fasterxml.jackson.databind.ObjectMapper (OnBeanCondition)
上下文中没有ObjectMapper bean，因为其自动配置使用Jackson2ObjectMapperBuilder来创建ObjectMapper和Jackson2ObjectMapperBuilder，这是spring-web的一部分1}}，不在类路径上。
您可以通过依赖Spring Boot的JSON启动程序替换您的Jackson依赖项来解决问题。这会让你的pom看起来像这样：
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-json</artifactId>
<version>2.0.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<version>2.0.0.RELEASE</version>
<scope>test</scope>
</dependency>
它与此特定问题无关，但如果您正在使用Spring Boot的依赖关系管理（例如使用spring-boot-starter-parent作为您的pom的父级，例如），您应该从两个依赖项中删除版本，并允许父级依赖项管理来设置它们。