使用application.yml中的属性将spring data mongodb中的@document中的集合名注入

d8tt03nd  于 2021-06-30  发布在  Java
关注(0)|答案(2)|浏览(597)

我想使用application.yml中的属性命名mongo集合中的集合名称。
例如，如果我得到那个文件：application.yml

spring.data.mongodb.person-collection: character

我想把这个属性注入到这个实体中：

@Document(collection = "@Value('spring.data.mongodb.person-collection')")
public class PersonEntity {
    ...
}

我想使用这个属性，因为我有很多环境，他们使用相同的数据库。我想根据环境的功能隔离一些集合。
你知道我怎么解决吗？
（我试过用spel，但没能解决这个问题）。
编辑：
我尝试使用另一个bean来注入我的属性

@Component
public class PersonRepositoryCustom {

private static String collectionName;

/**
 * @return the collectionName
 */
public static String getCollectionName() {
    return collectionName;
}

@Value("${spring.data.mongodb.person-collection:person}")
public void setCollectionName(String collectionNameVariable) {
    collectionName = collectionNameVariable;
}

}

所以我修改了我的文档注解：

@Document(collection = "#{@T(persistence.mongodb.repositories.PersonRepositoryCustom).getCollectionName()}")

所以我得到了那个信息

Caused by: org.springframework.expression.spel.SpelParseException: EL1041E: After parsing a valid expression, there is still more data in the expression: 'lparen(()'
at org.springframework.expression.spel.standard.InternalSpelExpressionParser.doParseExpression(InternalSpelExpressionParser.java:135) ~[spring-expression-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.expression.spel.standard.SpelExpressionParser.doParseExpression(SpelExpressionParser.java:61) ~[spring-expression-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.expression.spel.standard.SpelExpressionParser.doParseExpression(SpelExpressionParser.java:33) ~[spring-expression-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.expression.common.TemplateAwareExpressionParser.parseExpressions(TemplateAwareExpressionParser.java:121) ~[spring-expression-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.expression.common.TemplateAwareExpressionParser.parseTemplate(TemplateAwareExpressionParser.java:62) ~[spring-expression-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.expression.common.TemplateAwareExpressionParser.parseExpression(TemplateAwareExpressionParser.java:49) ~[spring-expression-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.data.mongodb.core.mapping.BasicMongoPersistentEntity.detectExpression(BasicMongoPersistentEntity.java:255) ~[spring-data-mongodb-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.mongodb.core.mapping.BasicMongoPersistentEntity.<init>(BasicMongoPersistentEntity.java:80) ~[spring-data-mongodb-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.mongodb.core.mapping.MongoMappingContext.createPersistentEntity(MongoMappingContext.java:90) ~[spring-data-mongodb-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.mongodb.core.mapping.MongoMappingContext.createPersistentEntity(MongoMappingContext.java:39) ~[spring-data-mongodb-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.mapping.context.AbstractMappingContext.addPersistentEntity(AbstractMappingContext.java:366) ~[spring-data-commons-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.mapping.context.AbstractMappingContext.getPersistentEntity(AbstractMappingContext.java:248) ~[spring-data-commons-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.mapping.context.AbstractMappingContext.getPersistentEntity(AbstractMappingContext.java:191) ~[spring-data-commons-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.mapping.context.AbstractMappingContext.getPersistentEntity(AbstractMappingContext.java:85) ~[spring-data-commons-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.mapping.context.MappingContext.getRequiredPersistentEntity(MappingContext.java:73) ~[spring-data-commons-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.mongodb.repository.support.MongoRepositoryFactory.getEntityInformation(MongoRepositoryFactory.java:149) ~[spring-data-mongodb-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.mongodb.repository.support.MongoRepositoryFactory.getTargetRepository(MongoRepositoryFactory.java:123) ~[spring-data-mongodb-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:305) ~[spring-data-commons-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.lambda$afterPropertiesSet$5(RepositoryFactoryBeanSupport.java:297) ~[spring-data-commons-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.util.Lazy.getNullable(Lazy.java:211) ~[spring-data-commons-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.util.Lazy.get(Lazy.java:94) ~[spring-data-commons-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:300) ~[spring-data-commons-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.mongodb.repository.support.MongoRepositoryFactoryBean.afterPropertiesSet(MongoRepositoryFactoryBean.java:119) ~[spring-data-mongodb-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1837) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1774) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:277) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1247) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1167) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:593) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:90) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:374) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1411) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:592) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:277) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1247) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1167) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:593) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
... 22 more

我尝试了另一种方法，直接使用bean：

package persistence.mongodb.repositories;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class PersonRepositoryCustom {

private static String collectionName;

/**
 * @return the collectionName
 */
public String getCollectionName() {
    return collectionName;
}

@Value("${spring.data.mongodb.person-collection:person}")
public void setCollectionName(String collectionNameVariable) {
    collectionName = collectionNameVariable;
}

}

因此，我用以下内容更新了文档注解：

@Document(collection = "#{@personRepositoryCustom.getCollectionName()}")

我得到一个信息：

Caused by: org.springframework.expression.spel.SpelEvaluationException: EL1057E: No bean resolver registered in the context to resolve access to bean  'personRepositoryCustom'
Javaspringmongodbspring-bootspring-data-mongodb

2条答案

按热度按时间
8e2ybdfx

8e2ybdfx1#

你可以使用spel（它有效）
使用 @Component 要获取的类 @Value 使用spel

@Component
public class CustomMongoCollection {

    @Value("spring.data.mongodb.person-collection")
    private String person;

    public void getCollectionName(String coll) {
        if ("person".equals(coll)) {
            return person;
        } else {
            //setup here
        }
    }
}

@Document(collection = "#{customMongoCollection.getCollectionName('person')}")
public class PersonEntity {

}

注意：我在单元测试期间遇到了问题
使用“t”运算符
特殊的“t”运算符可用于指定java.lang.class的示例（“type”）。静态方法也使用这个操作符调用。standardevaluationcontext使用typelocator查找类型，standardtypelocator（可以替换）是在理解java.lang包的基础上构建的。这意味着对java.lang中类型的t（）引用不需要完全限定，但所有其他类型引用都必须完全限定。
https://docs.spring.io/spring/docs/3.0.x/reference/expressions.html


# {T(your.package.CustomMongoCollection).getCollectionName('person')}

注意：现在custommongocollection.getcollectionname是 static 方法。

赞(0）分享  回复(0）举报  2021-06-30
6qfn3psc

6qfn3psc2#

我最终找到了一种解决方法，使用@valijon给出的部分答案和stackoverflow上另一篇文章的另一部分

package persistence.mongodb.repositories;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class PersonRepositoryCustom {

private static String collectionName;

/**
 * @return the collectionName
 */
public static String getCollectionName() {
    return collectionName;
}

@Value("${spring.data.mongodb.person-collection:person}")
public void setCollectionName(String collectionNameVariable) {
    collectionName = collectionNameVariable;
}

}

@Document(collection = "#{T(mongodb.repositories.PersonRepositoryCustom).getCollectionName() }")
public class PersonEntity { ... }
赞(0）分享  回复(0）举报  2021-06-30
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