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SpringBoot + Mongodb 開發(fā)中關于MongoTamplate的配置問題
黃舟
黃舟 2017-04-24 09:13:28
0
3
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背景：

項目使用maven管理，如下是依賴jar樹結(jié)構(gòu)：

[INFO] xxx:groupon-boot:jar:1.0
[INFO] +- org.springframework.boot:spring-boot-starter-web:jar:1.2.0.RELEASE:compile
[INFO] |  +- org.springframework.boot:spring-boot-starter:jar:1.2.0.RELEASE:compile
[INFO] |  |  +- org.springframework.boot:spring-boot:jar:1.2.0.RELEASE:compile
[INFO] |  |  +- org.springframework.boot:spring-boot-autoconfigure:jar:1.2.0.RELEASE:compile
[INFO] |  |  +- org.springframework.boot:spring-boot-starter-logging:jar:1.2.0.RELEASE:compile
[INFO] |  |  |  +- org.slf4j:jul-to-slf4j:jar:1.7.7:compile
[INFO] |  |  |  +- org.slf4j:log4j-over-slf4j:jar:1.7.7:compile
[INFO] |  |  |  \- ch.qos.logback:logback-classic:jar:1.1.2:compile
[INFO] |  |  |     \- ch.qos.logback:logback-core:jar:1.1.2:compile
[INFO] |  |  \- org.yaml:snakeyaml:jar:1.14:runtime
[INFO] |  +- org.springframework.boot:spring-boot-starter-tomcat:jar:1.2.0.RELEASE:compile
[INFO] |  |  +- org.apache.tomcat.embed:tomcat-embed-core:jar:8.0.15:compile
[INFO] |  |  +- org.apache.tomcat.embed:tomcat-embed-el:jar:8.0.15:compile
[INFO] |  |  +- org.apache.tomcat.embed:tomcat-embed-logging-juli:jar:8.0.15:compile
[INFO] |  |  \- org.apache.tomcat.embed:tomcat-embed-websocket:jar:8.0.15:compile
[INFO] |  +- com.fasterxml.jackson.core:jackson-databind:jar:2.4.4:compile
[INFO] |  |  +- com.fasterxml.jackson.core:jackson-annotations:jar:2.4.4:compile
[INFO] |  |  \- com.fasterxml.jackson.core:jackson-core:jar:2.4.4:compile
[INFO] |  +- org.hibernate:hibernate-validator:jar:5.1.3.Final:compile
[INFO] |  |  +- javax.validation:validation-api:jar:1.1.0.Final:compile
[INFO] |  |  +- org.jboss.logging:jboss-logging:jar:3.1.3.GA:compile
[INFO] |  |  \- com.fasterxml:classmate:jar:1.0.0:compile
[INFO] |  +- org.springframework:spring-core:jar:4.1.3.RELEASE:compile
[INFO] |  +- org.springframework:spring-web:jar:4.1.3.RELEASE:compile
[INFO] |  |  +- org.springframework:spring-aop:jar:4.1.3.RELEASE:compile
[INFO] |  |  |  \- aopalliance:aopalliance:jar:1.0:compile
[INFO] |  |  +- org.springframework:spring-beans:jar:4.1.3.RELEASE:compile
[INFO] |  |  \- org.springframework:spring-context:jar:4.1.3.RELEASE:compile
[INFO] |  \- org.springframework:spring-webmvc:jar:4.1.3.RELEASE:compile
[INFO] |     \- org.springframework:spring-expression:jar:4.1.3.RELEASE:compile
[INFO] +- org.springframework.boot:spring-boot-starter-redis:jar:1.2.0.RELEASE:compile
[INFO] |  +- org.springframework:spring-context-support:jar:4.1.3.RELEASE:compile
[INFO] |  +- org.springframework:spring-tx:jar:4.1.3.RELEASE:compile
[INFO] |  +- org.springframework.data:spring-data-redis:jar:1.4.1.RELEASE:compile
[INFO] |  |  \- org.slf4j:slf4j-api:jar:1.7.7:compile
[INFO] |  \- redis.clients:jedis:jar:2.5.2:compile
[INFO] |     \- org.apache.commons:commons-pool2:jar:2.2:compile
[INFO] +- org.springframework.boot:spring-boot-starter-data-jpa:jar:1.2.0.RELEASE:compile
[INFO] |  +- org.springframework.boot:spring-boot-starter-aop:jar:1.2.0.RELEASE:compile
[INFO] |  |  +- org.aspectj:aspectjrt:jar:1.8.4:compile
[INFO] |  |  \- org.aspectj:aspectjweaver:jar:1.8.4:compile
[INFO] |  +- org.springframework.boot:spring-boot-starter-jdbc:jar:1.2.0.RELEASE:compile
[INFO] |  |  +- org.springframework:spring-jdbc:jar:4.1.3.RELEASE:compile
[INFO] |  |  \- org.apache.tomcat:tomcat-jdbc:jar:8.0.15:compile
[INFO] |  |     \- org.apache.tomcat:tomcat-juli:jar:8.0.15:compile
[INFO] |  +- org.hibernate:hibernate-entitymanager:jar:4.3.7.Final:compile
[INFO] |  |  +- org.jboss.logging:jboss-logging-annotations:jar:1.2.0.Beta1:compile
[INFO] |  |  +- org.hibernate:hibernate-core:jar:4.3.7.Final:compile
[INFO] |  |  |  +- antlr:antlr:jar:2.7.7:compile
[INFO] |  |  |  \- org.jboss:jandex:jar:1.1.0.Final:compile
[INFO] |  |  +- org.hibernate.common:hibernate-commons-annotations:jar:4.0.5.Final:compile
[INFO] |  |  +- org.hibernate.javax.persistence:hibernate-jpa-2.1-api:jar:1.0.0.Final:compile
[INFO] |  |  +- org.jboss.spec.javax.transaction:jboss-transaction-api_1.2_spec:jar:1.0.0.Final:compile
[INFO] |  |  \- org.javassist:javassist:jar:3.18.1-GA:compile
[INFO] |  +- org.springframework:spring-orm:jar:4.1.3.RELEASE:compile
[INFO] |  +- org.springframework.data:spring-data-jpa:jar:1.7.1.RELEASE:compile
[INFO] |  |  +- org.springframework.data:spring-data-commons:jar:1.9.1.RELEASE:compile
[INFO] |  |  \- org.slf4j:jcl-over-slf4j:jar:1.7.7:compile
[INFO] |  \- org.springframework:spring-aspects:jar:4.1.3.RELEASE:compile
[INFO] +- org.hsqldb:hsqldb:jar:2.3.2:runtime
[INFO] \- witcool:groupon-mongodb:jar:1.0:compile
[INFO]    +- witcool:yqsp-mongo-common:jar:1.0:compile
[INFO]    |  +- witcool:yqsp-common:jar:1.0:compile
[INFO]    |  |  +- org.apache.httpcomponents:httpcore:jar:4.3.2:compile
[INFO]    |  |  +- org.apache.httpcomponents:httpclient:jar:4.3.6:compile
[INFO]    |  |  +- org.apache.httpcomponents:httpmime:jar:4.3.6:compile
[INFO]    |  |  \- commons-configuration:commons-configuration:jar:1.6:compile
[INFO]    |  |     +- commons-collections:commons-collections:jar:3.2.1:compile
[INFO]    |  |     +- commons-digester:commons-digester:jar:2.1:compile
[INFO]    |  |     |  \- commons-beanutils:commons-beanutils:jar:1.9.2:compile
[INFO]    |  |     \- commons-beanutils:commons-beanutils-core:jar:1.8.0:compile
[INFO]    |  +- org.springframework:spring-test:jar:4.1.3.RELEASE:compile
[INFO]    |  +- org.springframework.security:spring-security-core:jar:3.2.5.RELEASE:compile
[INFO]    |  +- org.springframework.security:spring-security-web:jar:3.2.5.RELEASE:compile
[INFO]    |  +- org.springframework.security:spring-security-config:jar:3.2.5.RELEASE:compile
[INFO]    |  +- org.springframework.security:spring-security-taglibs:jar:3.2.5.RELEASE:compile
[INFO]    |  |  \- org.springframework.security:spring-security-acl:jar:3.2.5.RELEASE:compile
[INFO]    |  +- org.springframework.security.oauth:spring-security-oauth2:jar:1.0.5.RELEASE:compile
[INFO]    |  +- javax.annotation:com.springsource.javax.annotation:jar:1.0.0:compile
[INFO]    |  +- javax.inject:javax.inject:jar:1:compile
[INFO]    |  +- mysql:mysql-connector-java:jar:5.1.34:compile
[INFO]    |  +- commons-dbcp:commons-dbcp:jar:1.4:compile
[INFO]    |  +- org.slf4j:slf4j-log4j12:jar:1.7.7:runtime
[INFO]    |  +- log4j:log4j:jar:1.2.17:compile
[INFO]    |  +- org.glassfish.jersey.media:jersey-media-json-jackson:jar:2.13:compile
[INFO]    |  |  \- org.glassfish.jersey.core:jersey-common:jar:2.13:compile
[INFO]    |  |     +- javax.ws.rs:javax.ws.rs-api:jar:2.0.1:compile
[INFO]    |  |     +- javax.annotation:javax.annotation-api:jar:1.2:compile
[INFO]    |  |     +- org.glassfish.jersey.bundles.repackaged:jersey-guava:jar:2.13:compile
[INFO]    |  |     +- org.glassfish.hk2:hk2-api:jar:2.3.0-b10:compile
[INFO]    |  |     |  +- org.glassfish.hk2:hk2-utils:jar:2.3.0-b10:compile
[INFO]    |  |     |  \- org.glassfish.hk2.external:aopalliance-repackaged:jar:2.3.0-b10:compile
[INFO]    |  |     +- org.glassfish.hk2.external:javax.inject:jar:2.3.0-b10:compile
[INFO]    |  |     +- org.glassfish.hk2:hk2-locator:jar:2.3.0-b10:compile
[INFO]    |  |     \- org.glassfish.hk2:osgi-resource-locator:jar:1.0.1:compile
[INFO]    |  +- com.fasterxml.jackson.jaxrs:jackson-jaxrs-json-provider:jar:2.3.2:compile
[INFO]    |  +- com.fasterxml.jackson.jaxrs:jackson-jaxrs-base:jar:2.3.2:compile
[INFO]    |  +- com.fasterxml.jackson.module:jackson-module-jaxb-annotations:jar:2.3.2:compile
[INFO]    |  \- cglib:cglib:jar:2.2.2:compile
[INFO]    |     \- asm:asm:jar:3.3.1:compile
[INFO]    +- org.springframework.data:spring-data-mongodb:jar:1.6.1.RELEASE:compile
[INFO]    |  \- org.mongodb:mongo-java-driver:jar:2.12.4:compile
[INFO]    +- commons-httpclient:commons-httpclient:jar:3.1:compile
[INFO]    |  \- commons-logging:commons-logging:jar:1.0.4:compile
[INFO]    +- commons-lang:commons-lang:jar:2.6:compile
[INFO]    +- commons-codec:commons-codec:jar:1.6:compile
[INFO]    +- org.codehaus.jackson:jackson-core-asl:jar:1.8.4:compile
[INFO]    +- org.codehaus.jackson:jackson-mapper-asl:jar:1.8.4:compile
[INFO]    +- dom4j:dom4j:jar:1.6.1:compile
[INFO]    |  \- xml-apis:xml-apis:jar:1.0.b2:compile
[INFO]    \- javax.servlet:javax.servlet-api:jar:3.1.0:compile

如下是spring配置文件：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:c="http://www.springframework.org/schema/c" 
xmlns:repository="http://www.springframework.org/schema/data/repository"
xmlns:mongo="http://www.springframework.org/schema/data/mongo"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd  
http://www.springframework.org/schema/data/repository
http://www.springframework.org/schema/data/repository/spring-repository.xsd
http://www.springframework.org/schema/data/mongo
http://www.springframework.org/schema/data/mongo/spring-mongo.xsd">


<context:component-scan base-package="com.xxx.groupon" />
<!-- Factory bean that creates the Mongo instance
 -->
<bean id="mongo" class="org.springframework.data.mongodb.core.MongoFactoryBean">
    <property name="host" value="localhost" />
    <property name="port" value="27017" />
</bean>
<bean id="grouponTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
    <constructor-arg name="mongo" ref="mongo" />
    <constructor-arg name="databaseName" value="groupon3" />
</bean>
<bean id="sequenceTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
    <constructor-arg name="mongo" ref="mongo" />
    <constructor-arg name="databaseName" value="sequences3" />
</bean>

問題：

執(zhí)行打好的jar包后，報如下錯誤：
No qualifying bean of type [org.springframework.data.mongodb.core.MongoTemplate] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency.

我的想法是通過上面的jar樹和配置文件，證明我已經(jīng)依賴了spring-data-mongodb包。
那為什么仍然會提示我MongoTemplate沒有定義？

更新：

感謝@Kavlez同學提醒和@XFHNever同學幫忙，的確是沒有加載到配置文件，給入口類添加@ImportResource("applicationContext.xml")

加載成功后，又報NoUniqueBeanDefinitionException異常，描述為
No qualifying bean of type [org.springframework.data.mongodb.core.MongoTemplate] is defined: expected single matching bean but found 2: sequenceTemplate,grouponTemplate

但此時我注入的方式是@Autowired和@Qualifier("grouponTemplate")配合（在其他spring項目中這樣做沒有問題的）但為什么仍然會報NoUniqueBeanDefinitionException呢？

好吧，問題的原因沒有找到，倒是讓我僥幸解決了：
在spring配置文件中新添加了一個bean：

    <bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
        <constructor-arg name="mongo" ref="mongo" />
        <constructor-arg name="databaseName" value="test" />
    </bean>

項目跑了起來～

最后，如果有幸得知該問題的原因，我更新在這個問題下面。再次感謝。

黃舟
黃舟

人生最曼妙的風景，竟是內(nèi)心的淡定與從容！

reply all(3)
伊謝爾倫

From the information provided by the subject, neither of the two MongoTemplates declared in the Spring configuration file were detected.
If @XFHNever said it is because two beans of the same type are configured at the same time and it is impossible to identify which one is needed, in this case the exception message should be: Autowire

org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type

[org.springframework.data.mongodb.core.MongoTemplate] is defined:
expected single matching bean but found 2

My guess is that the configuration file may not have been read.

黃舟

This is probably because you have configured two MongoTemplates in the configuration file, and Spring does not know which one should be loaded. You can consider using @Autowired and @Qualifier at the same time to specify which MongoTemplate to load.

PS:

  1. @Resource is assembled and injected according to the name by default. Only when a bean matching the name cannot be found, it will be assembled and injected according to the type; @Resource(name="studentDao")
  2. @Autowired defaults to assembly and injection according to type. If you want to allocate injection according to name, you need to use it together with @Qualifier; @Autowired @Qualifier("studentDao")
  3. The @Resource annotation is provided by J2EE, and @Autowired is provided by Spring. Therefore, it is recommended to use @Resource to reduce the system's dependence on spring;
洪濤

http://www.jianshu.com/p/6c82e6e21e5d
You can read the articles I summarized before

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