Neo4j-cypher-dsl java.util.MissingResourceException： 找不到捆绑包 java.util.PropertyResourceBundle 的资源， ke

Question

我正在使用Spring Boot 2.6.2(附带Spring-data-neo4j:6.2.0和neo4j密码dsl:2021.4.1(，我遇到以下错误

java.util.MissingResourceException: Can't find resource for bundle java.util.PropertyResourceBundle, key assertions.node-required
at java.base/java.util.ResourceBundle.getObject(ResourceBundle.java:564) ~[na:na]
at java.base/java.util.ResourceBundle.getString(ResourceBundle.java:521) ~[na:na]
at org.neo4j.cypherdsl.core.Functions.id(Functions.java:57) ~[neo4j-cypher-dsl-2021.4.1.jar:2021.4.1]
at org.neo4j.cypherdsl.core.AbstractNode.internalId(AbstractNode.java:96) ~[neo4j-cypher-dsl-2021.4.1.jar:2021.4.1]
at org.springframework.data.neo4j.core.mapping.CypherGenerator.prepareSaveOf(CypherGenerator.java:337) ~[spring-data-neo4j-6.2.0.jar:6.2.0]
at org.springframework.data.neo4j.core.Neo4jTemplate.lambda$saveImpl$2(Neo4jTemplate.java:394) ~[spring-data-neo4j-6.2.0.jar:6.2.0]
at org.springframework.data.neo4j.core.DefaultNeo4jClient$RunnableStatement.runWith(DefaultNeo4jClient.java:208) ~[spring-data-neo4j-6.2.0.jar:6.2.0]
at org.springframework.data.neo4j.core.DefaultNeo4jClient$DefaultRecordFetchSpec.one(DefaultNeo4jClient.java:453) ~[spring-data-neo4j-6.2.0.jar:6.2.0]
at org.springframework.data.neo4j.core.Neo4jTemplate.saveImpl(Neo4jTemplate.java:398) ~[spring-data-neo4j-6.2.0.jar:6.2.0]
at org.springframework.data.neo4j.core.Neo4jTemplate.save(Neo4jTemplate.java:343) ~[spring-data-neo4j-6.2.0.jar:6.2.0]
at org.springframework.data.neo4j.repository.support.SimpleNeo4jRepository.save(SimpleNeo4jRepository.java:119) ~[spring-data-neo4j-6.2.0.jar:6.2.0]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]
at org.springframework.data.repository.core.support.RepositoryMethodInvoker$RepositoryFragmentMethodInvoker.lambda$new$0(RepositoryMethodInvoker.java:289) ~[spring-data-commons-2.6.0.jar:2.6.0]
at org.springframework.data.repository.core.support.RepositoryMethodInvoker.doInvoke(RepositoryMethodInvoker.java:137) ~[spring-data-commons-2.6.0.jar:2.6.0]
at org.springframework.data.repository.core.support.RepositoryMethodInvoker.invoke(RepositoryMethodInvoker.java:121) ~[spring-data-commons-2.6.0.jar:2.6.0]
at org.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:529) ~[spring-data-commons-2.6.0.jar:2.6.0]
at org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:285) ~[spring-data-commons-2.6.0.jar:2.6.0]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:638) ~[spring-data-commons-2.6.0.jar:2.6.0]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.14.jar:5.3.14]
at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.doInvoke(QueryExecutorMethodInterceptor.java:163) ~[spring-data-commons-2.6.0.jar:2.6.0]
at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.invoke(QueryExecutorMethodInterceptor.java:138) ~[spring-data-commons-2.6.0.jar:2.6.0]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.14.jar:5.3.14]
at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:80) ~[spring-data-commons-2.6.0.jar:2.6.0]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.14.jar:5.3.14]
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123) ~[spring-tx-5.3.14.jar:5.3.14]
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388) ~[spring-tx-5.3.14.jar:5.3.14]
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) ~[spring-tx-5.3.14.jar:5.3.14]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.14.jar:5.3.14]
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:137) ~[spring-tx-5.3.14.jar:5.3.14]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.14.jar:5.3.14]
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:97) ~[spring-aop-5.3.14.jar:5.3.14]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.14.jar:5.3.14]
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215) ~[spring-aop-5.3.14.jar:5.3.14]
at com.sun.proxy.$Proxy198.save(Unknown Source) ~[na:na]
at com.acme.FooBarDao.save(FooBarDao.java:82) ~[classes/:na]
...

FooBarDao.java:82行是对节点存储库的简单调用，如下所示

fooBarNodeRepository.save(fooBarNode);

FooBarNodeRepository是一个简单的节点存储库，如下所示：

public interface FooBarNodeRepository extends Neo4jRepository<FooBarNode, Long> {
Optional<FooBarNode> findByGid(String gid);
void deleteByGid(String gid);
@Query("MATCH (n:FooBar) WHERE n.gid = $gid RETURN id(n)")
Long getIdByGid(String gid);
}

相同的代码在Spring Boot 2.5.2下工作时没有问题

我已经做了一些调试，异常是从org.neo4j.cypherdsl.core抛出的。函数行57如下

Assertions.notNull(node, Cypher.messages.getString(MessageKeys.ASSERTIONS_NODE_REQUIRED));

节点不为空，并且由于某些原因Cypher.消息未加载

Answer 1

已找到根本问题。

在日志中启用TRACE时，我在日志中发现以下内容：

2022-01-21 10:29:20.484 TRACE 19636 --- [  restartedMain] .i.s.PathMatchingResourcePatternResolver : Resolved classpath location [messages.properties] to resources [URL [file:/E:/AcmeFoobar/target/classes/messages.properties], URL [jar:file:/C:/Users/tariqd/.m2/repository/org/neo4j/neo4j-cypher-dsl/2021.4.1/neo4j-cypher-dsl-2021.4.1.jar!/messages.properties]]
2022-01-21 10:29:20.484 TRACE 19636 --- [  restartedMain] utoConfiguration$ResourceBundleCondition : Condition MessageSourceAutoConfiguration.ResourceBundleCondition on org.springframework.boot.autoconfigure.context.MessageSourceAutoConfiguration matched due to ResourceBundle found bundle URL [file:/E:/AcmeFoobar/target/classes/messages.properties]

因此，Spring Boot将项目的messages.properties注入Cypher.messages，而不是neo4j Cypher-dsl。

作为概念验证，我插入了neo4j-cypher-dls-2021.4.1.jar的内容/messages.properties到项目的messages.properties的尾部，它就工作了。

以上内容暂时可以作为解决方案，但由于消息.properties是任何Spring Boot应用程序中的默认消息，因此我建议进行以下修复：

1. 将neo4j-cypher-dsl/messages.properties重命名为neo4j-cypher dsl/neo4j cypher-dsl messages.properties
2. 更新org.neo4j.cypherdsl.core.Cypher中的第56行如下：

static final ResourceBundle messages = ResourceBundle.getBundle("neo4j-cypher-dsl-messages");