java - NamedEntityGraph 无法解析为类型

Question

在使用 maven、jpa 和 hibernate 的 eclipse 项目中，我收到以下两个编译错误:

NamedEntityGraph cannot be resolved to a type  
and  
NamedAttributeNode cannot be resolved to a type  

如何解决这些编译错误？

这是显示编译错误的代码行:

@Entity(name="someclass")  
@NamedEntityGraph(name="includeOther", attributeNodes={@NamedAttributeNode("other")})
@Table(name="sometable")
public class SomeClass {
    //lots of stuff
}

我认为问题是 eclipse 没有看到我配置了 JPA 2.1。但我尝试安装和配置JPA 2.1。您可以在文件共享站点by clicking on this link阅读我的pom.xml的完整代码。我在eclipse项目facets中设置了JPA 2.1，你可以看到by clicking on this link 。另外，我从 Windows 命令行在 eclipse 项目的根文件夹上运行 mvn dependency:tree ，并得到以下输出:

[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building MyApp 1.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[WARNING] The artifact org.apache.commons:commons-io:jar:1.3.2 has been relocated to commons-io:commons-io:jar:1.3.2
[INFO]
[INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ MyApp ---
[WARNING] The artifact org.apache.commons:commons-io:jar:1.3.2 has been relocated to commons-io:commons-io:jar:1.3.2
[INFO] org.springframework.samples:MyApp:war:1.0.0-SNAPSHOT
[INFO] +- org.jvnet.hyperjaxb3:hyperjaxb3-ejb-runtime:jar:0.6.0:compile
[INFO] |  +- org.apache.commons:commons-lang3:jar:3.2.1:compile
[INFO] |  \- org.jvnet.jaxb2_commons:jaxb2-basics-runtime:jar:0.8.2:compile
[INFO] +- org.jvnet.hyperjaxb3:hyperjaxb3-ejb-roundtrip:jar:0.6.0:compile
[INFO] |  +- org.hibernate.javax.persistence:hibernate-jpa-2.0-api:jar:1.0.0.Final:compile
[INFO] |  +- org.jvnet.jaxb2_commons:jaxb2-basics-testing:jar:0.8.2:compile
[INFO] |  |  +- xmlunit:xmlunit:jar:1.0:compile
[INFO] |  |  \- org.jvnet.jaxb2_commons:jaxb2-basics-tools:jar:0.8.2:compile
[INFO] |  |     \- commons-logging:commons-logging:jar:1.1.1:compile
[INFO] |  \- org.slf4j:slf4j-log4j12:jar:1.6.1:compile
[INFO] |     \- log4j:log4j:jar:1.2.16:compile
[INFO] +- org.jadira.usertype:usertype.core:jar:3.1.0.CR8:compile
[INFO] |  \- org.jadira.usertype:usertype.spi:jar:3.1.0.CR8:compile
[INFO] +- javax.servlet:jstl:jar:1.2:compile
[INFO] +- javax.servlet:servlet-api:jar:2.5:provided
[INFO] +- javax.servlet.jsp:jsp-api:jar:2.2:provided
[INFO] +- org.springframework.data:spring-data-jpa:jar:1.6.4.RELEASE:compile
[INFO] |  +- org.springframework.data:spring-data-commons:jar:1.8.4.RELEASE:compile
[INFO] |  +- org.springframework:spring-context:jar:4.0.6.RELEASE:compile
[INFO] |  +- org.springframework:spring-beans:jar:4.0.6.RELEASE:compile
[INFO] |  +- org.springframework:spring-core:jar:4.0.6.RELEASE:compile
[INFO] |  \- org.slf4j:jcl-over-slf4j:jar:1.7.7:runtime
[INFO] +- org.springframework:spring-jdbc:jar:4.0.6.RELEASE:compile
[INFO] +- org.springframework:spring-aop:jar:4.0.6.RELEASE:compile
[INFO] |  \- aopalliance:aopalliance:jar:1.0:compile
[INFO] +- org.springframework:spring-webmvc:jar:4.0.6.RELEASE:compile
[INFO] |  +- org.springframework:spring-expression:jar:4.0.6.RELEASE:compile
[INFO] |  \- org.springframework:spring-web:jar:4.0.6.RELEASE:compile
[INFO] +- org.springframework:spring-tx:jar:4.0.6.RELEASE:compile
[INFO] +- org.springframework:spring-context-support:jar:4.0.6.RELEASE:compile
[INFO] +- org.springframework:spring-orm:jar:4.0.6.RELEASE:compile
[INFO] +- org.springframework:spring-oxm:jar:4.0.6.RELEASE:compile
[INFO] +- org.springframework:spring-jms:jar:4.0.6.RELEASE:compile
[INFO] +- org.apache.tomcat:tomcat-jdbc:jar:7.0.42:runtime
[INFO] |  \- org.apache.tomcat:tomcat-juli:jar:7.0.42:runtime
[INFO] +- org.slf4j:slf4j-api:jar:1.7.5:compile
[INFO] +- ch.qos.logback:logback-classic:jar:1.0.13:runtime
[INFO] |  \- ch.qos.logback:logback-core:jar:1.0.13:runtime
[INFO] +- joda-time:joda-time:jar:2.3:compile
[INFO] +- joda-time:joda-time-hibernate:jar:1.3:compile
[INFO] +- joda-time:joda-time-jsptags:jar:1.1.1:compile
[INFO] +- org.jadira.usertype:usertype.jodatime:jar:2.0.1:compile
[INFO] +- mysql:mysql-connector-java:jar:5.1.27:compile
[INFO] +- org.hibernate:hibernate-entitymanager:jar:4.2.1.Final:compile
[INFO] |  +- org.jboss.logging:jboss-logging:jar:3.1.0.GA:compile
[INFO] |  +- org.hibernate:hibernate-core:jar:4.2.1.Final:compile
[INFO] |  |  \- antlr:antlr:jar:2.7.7:compile
[INFO] |  +- dom4j:dom4j:jar:1.6.1:compile
[INFO] |  +- org.jboss.spec.javax.transaction:jboss-transaction api_1.1_spec:jar:1.0.1.Final:compile
[INFO] |  +- org.javassist:javassist:jar:3.15.0-GA:compile
[INFO] |  \- org.hibernate.common:hibernate-commons-annotations:jar:4.0.1.Final:compile
[INFO] +- org.hibernate:hibernate-validator:jar:5.1.1.Final:compile
[INFO] |  +- javax.validation:validation-api:jar:1.1.0.Final:compile
[INFO] |  \- com.fasterxml:classmate:jar:1.0.0:compile
[INFO] +- org.hibernate:hibernate-ehcache:jar:4.2.1.Final:compile
[INFO] +- net.sf.ehcache:ehcache-core:jar:2.6.6:compile
[INFO] +- org.webjars:bootstrap:jar:2.3.0:compile
[INFO] +- org.webjars:jquery-ui:jar:1.10.3:compile
[INFO] +- org.webjars:jquery:jar:2.0.3-1:compile
[INFO] +- org.springframework:spring-test:jar:4.0.6.RELEASE:test
[INFO] +- junit:junit:jar:4.11:test
[INFO] |  \- org.hamcrest:hamcrest-core:jar:1.3:test
[INFO] +- org.hamcrest:hamcrest-library:jar:1.3:test
[INFO] +- org.aspectj:aspectjrt:jar:1.7.4:compile
[INFO] +- org.aspectj:aspectjweaver:jar:1.7.4:runtime
[INFO] +- com.github.dandelion:datatables-jsp:jar:0.9.2:compile
[INFO] |  \- com.github.dandelion:datatables-core:jar:0.9.2:compile
[INFO] |     +- com.googlecode.json-simple:json-simple:jar:1.1.1:compile
[INFO] |     \- commons-beanutils:commons-beanutils:jar:1.8.3:compile
[INFO] +- com.github.dandelion:datatables-export-itext:jar:0.9.2:compile
[INFO] |  \- com.itextpdf:itextpdf:jar:5.3.4:compile
[INFO] +- com.github.dandelion:datatables-servlet2:jar:0.9.2:compile
[INFO] +- commons-fileupload:commons-fileupload:jar:1.2:compile
[INFO] +- commons-io:commons-io:jar:1.3.2:compile
[INFO] +- commons-lang:commons-lang:jar:2.6:compile
[INFO] +- org.apache.tiles:tiles-jsp:jar:2.1.3:compile
[INFO] |  \- org.apache.tiles:tiles-servlet:jar:2.1.3:compile
[INFO] |     \- org.apache.tiles:tiles-core:jar:2.1.3:compile
[INFO] |        +- org.apache.tiles:tiles-api:jar:2.1.3:compile
[INFO] |        \- commons-digester:commons-digester:jar:1.8.1:compile
[INFO] +- org.springframework.security:spring-security-core:jar:3.2.2.RELEASE:compile
[INFO] +- org.springframework.security:spring-security-web:jar:3.2.2.RELEASE:compile
[INFO] +- org.springframework.security:spring-security-config:jar:3.2.2.RELEASE:compile
[INFO] +- org.springframework.security:spring-security-taglibs:jar:3.2.2.RELEASE:compile
[INFO] |  \- org.springframework.security:spring-security-acl:jar:3.2.2.RELEASE:compile
[INFO] +- org.eclipse.emf:ecore:jar:2.2.3:compile
[INFO] \- org.eclipse.emf:common:jar:2.2.3:compile
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 9.805s
[INFO] Finished at: Thu Nov 06 12:32:32 PST 2014
[INFO] Final Memory: 14M/124M
[INFO] ------------------------------------------------------------------------

Answer 1

从你的依赖树:

org.hibernate:hibernate-entitymanager:jar:4.2.1.Final:compile

我认为 Hibernate 4.2.1 不支持 JPA 2.1。您可能需要升级到 Hibernate 4.3。

如果您的应用程序容器未提供此依赖项，您可能还需要添加它:

<dependency>
    <groupId>org.hibernate.javax.persistence</groupId>
    <artifactId>hibernate-jpa-2.1-api</artifactId>
    <version>1.0.0.Final</version>
</dependency>