当项目里面同时使用了多个spring data源的时候spring会不知道加载那个。
spring log 信息
2022-04-03 13:28:48.978 INFO [main] RepositoryConfigurationDelegate - Multiple Spring Data modules found, entering strict repository configuration mode!
2022-04-03 13:28:48.980 INFO [main] RepositoryConfigurationDelegate - Bootstrapping Spring Data JDBC repositories in DEFAULT mode.
2022-04-03 13:28:49.010 INFO [main] RepositoryConfigurationExtensionSupport - Spring Data JDBC - Could not safely identify store assignment for repository candidate interface ... If you want this repository to be a JDBC repository, consider annotating your entities with one of these annotations: org.springframework.data.relational.core.mapping.Table.
方法一给model加上对应的注解(从根源解决)
https://docs.spring.io/spring-data/jdbc/docs/current/reference/html/#repositories.multiple-modules
- spring-data-jdbc的注解
Table - spring-data-mongodb的注解
Document - spring-data-jpa的注解
Entity
方法二指定扫描的包，配置文件里禁用不需要的repos
这个方法实际测试不生效。
@EnableJpaRepositories(basePackages = "com.acme.repositories.jpa")
@EnableMongoRepositories(basePackages = "com.acme.repositories.mongo")
spring:
data:
redis:
repositories:
enabled: false
type: none
方法三在EnableJdbcRepositories加上includeFilters绕开限制
@EnableJdbcRepositories(basePackages = "com.acme.repositories.jdbc"，
includeFilters = {@ComponentScan.Filter(type = FilterType.REGEX, pattern = ".*")}
)
原理：
- spring在
RepositoryConfigurationDelegate里判断时候有多个spring-data源的
public List<BeanComponentDefinition> registerRepositoriesIn(BeanDefinitionRegistry registry,
RepositoryConfigurationExtension extension) {
//...(无关代码略)
Collection<RepositoryConfiguration<RepositoryConfigurationSource>> configurations = extension
.getRepositoryConfigurations(configurationSource, resourceLoader, inMultiStoreMode);
//...(无关代码略)
}
- 然后在
RepositoryConfigurationExtensionSupport进行判断时候加载
public <T extends RepositoryConfigurationSource> Collection<RepositoryConfiguration<T>> getRepositoryConfigurations(
T configSource, ResourceLoader loader, boolean strictMatchesOnly) {
Assert.notNull(configSource, "ConfigSource must not be null!");
Assert.notNull(loader, "Loader must not be null!");
Set<RepositoryConfiguration<T>> result = new HashSet<>();
for (BeanDefinition candidate : configSource.getCandidates(loader)) {
RepositoryConfiguration<T> configuration = getRepositoryConfiguration(candidate, configSource);
Class<?> repositoryInterface = loadRepositoryInterface(configuration,
getConfigurationInspectionClassLoader(loader));
if (repositoryInterface == null) {
result.add(configuration);
continue;
}
RepositoryMetadata metadata = AbstractRepositoryMetadata.getMetadata(repositoryInterface);
boolean qualifiedForImplementation = !strictMatchesOnly || configSource.usesExplicitFilters()
|| isStrictRepositoryCandidate(metadata);
if (qualifiedForImplementation && useRepositoryConfiguration(metadata)) {
result.add(configuration);
}
}
return result;
}
核心的判断是这个
boolean qualifiedForImplementation = !strictMatchesOnly || configSource.usesExplicitFilters() || isStrictRepositoryCandidate(metadata);
-
strictMatchesOnly: 如果有多个spring-data资源这个就为true -
configSource.usesExplicitFilters()这个就是判断Enable..注解includeFilters,includeFilters时候有设置
所以加上这个就能绕开限制了
includeFilters = {@ComponentScan.Filter(type = FilterType.REGEX, pattern = ".*")}
