org.springframework.boot.autoconfigure.data.mongo.MongoDataConfiguration.mongoCustomConversions 上的错误处理条件答案

【问题标题】：Error processing condition on org.springframework.boot.autoconfigure.data.mongo.MongoDataConfiguration.mongoCustomConversionsorg.springframework.boot.autoconfigure.data.mongo.MongoDataConfiguration.mongoCustomConversions 上的错误处理条件
【发布时间】：2020-06-30 00:03:03
【问题描述】：

我在启动时遇到此错误，我试图为 mongodb 运行客户查询。我按照 https://mkyong.com/spring-boot/spring-boot-spring-data-mongodb-example/ 教程获取此代码

java.lang.IllegalStateException: Error processing condition on org.springframework.boot.autoconfigure.data.mongo.MongoDataConfiguration.mongoCustomConversions
    at org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:60) ~[spring-boot-autoconfigure-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.context.annotation.ConditionEvaluator.shouldSkip(ConditionEvaluator.java:108) ~[spring-context-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForBeanMethod(ConfigurationClassBeanDefinitionReader.java:184) ~[spring-context-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:144) ~[spring-context-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:120) ~[spring-context-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:331) ~[spring-context-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:236) ~[spring-context-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:275) ~[spring-context-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:95) ~[spring-context-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:706) ~[spring-context-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:532) ~[spring-context-5.2.4.RELEASE.jar:5.2.4.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) [spring-boot-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at com.cmc.citizen.app.CitizenAppApplication.main(CitizenAppApplication.java:19) [classes/:?]
Caused by: java.lang.IllegalStateException: @ConditionalOnMissingBean did not specify a bean using type, name or annotation and the attempt to deduce the bean's type failed
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition$Spec.validate(OnBeanCondition.java:479) ~[spring-boot-autoconfigure-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition$Spec.<init>(OnBeanCondition.java:428) ~[spring-boot-autoconfigure-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getMatchOutcome(OnBeanCondition.java:140) ~[spring-boot-autoconfigure-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:47) ~[spring-boot-autoconfigure-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    ... 17 more
Caused by: org.springframework.boot.autoconfigure.condition.OnBeanCondition$BeanTypeDeductionException: Failed to deduce bean type for org.springframework.boot.autoconfigure.data.mongo.MongoDataConfiguration.mongoCustomConversions
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition$Spec.deducedBeanTypeForBeanMethod(OnBeanCondition.java:509) ~[spring-boot-autoconfigure-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition$Spec.deducedBeanType(OnBeanCondition.java:498) ~[spring-boot-autoconfigure-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition$Spec.<init>(OnBeanCondition.java:421) ~[spring-boot-autoconfigure-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getMatchOutcome(OnBeanCondition.java:140) ~[spring-boot-autoconfigure-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:47) ~[spring-boot-autoconfigure-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    ... 17 more
Caused by: java.lang.ClassNotFoundException: org.springframework.data.mongodb.core.convert.MongoCustomConversions
    at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[?:1.8.0_241]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_241]
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355) ~[?:1.8.0_241]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_241]
    at org.springframework.boot.autoconfigure.condition.FilteringSpringBootCondition.resolve(FilteringSpringBootCondition.java:108) ~[spring-boot-autoconfigure-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition$Spec.getReturnType(OnBeanCondition.java:517) ~[spring-boot-autoconfigure-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition$Spec.deducedBeanTypeForBeanMethod(OnBeanCondition.java:505) ~[spring-boot-autoconfigure-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition$Spec.deducedBeanType(OnBeanCondition.java:498) ~[spring-boot-autoconfigure-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition$Spec.<init>(OnBeanCondition.java:421) ~[spring-boot-autoconfigure-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getMatchOutcome(OnBeanCondition.java:140) ~[spring-boot-autoconfigure-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:47) ~[spring-boot-autoconfigure-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    ... 17 more

自定义存储库的实现

public class UserProfileRepositoryImpl implements UserProfileRepositoryCustom{

    @Autowired
    MongoTemplate mongoTemplate;

    @Override
    public UserProfile findUserProfileByEmail(String email) {
        // TODO Auto-generated method stub
        Query query = new Query(Criteria.where("email").is(email));
         return mongoTemplate.findOne(query, UserProfile.class);
    }

}

【问题讨论】：

标签： mongodb spring-boot

【解决方案1】：

当我删除以下依赖项时

<!-- https://mvnrepository.com/artifact/org.springframework.data/spring-data-mongodb-parent -->
<dependency>
    <groupId>org.springframework.data</groupId>
    <artifactId>spring-data-mongodb-parent</artifactId>
    <version>2.2.5.RELEASE</version>
    <type>pom</type>
</dependency>

并添加了以下依赖项，问题得到解决

    <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-mongodb -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-mongodb</artifactId>
    </dependency>

以下是我在 pom.xml 中使用的完整依赖项


    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
        </dependency>


        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.5.10</version>
        </dependency>

        <!-- Spring data mongodb -->
        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-mongodb -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-mongodb</artifactId>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.json/json -->
        <dependency>
            <groupId>org.json</groupId>
            <artifactId>json</artifactId>
            <version>20190722</version>
        </dependency>



    </dependencies>

【讨论】：

值得注意的是，自动添加spring-boot-starter-data-mongodb 意味着您添加了spring-data-mongodb，这隐含地是第一个依赖项的依赖项。

【解决方案2】：

遇到了同样的问题，是由于mongodb驱动版本不兼容导致的，目前最新更正

implementation 'org.springframework.boot:spring-boot-starter:2.2.5.RELEASE'
implementation 'org.mongodb:mongodb-driver:3.11.2'
implementation 'org.springframework.data:spring-data-mongodb:2.2.5.RELEASE'

【讨论】：