Spring 集成 JDBC 元数据存储

Question

我正在使用 Spring 集成来读取文件 FileReadingMessageSource 并且为了避免同一个文件被读取两次（或其他并发应用程序也读取它），我正在使用 FileSystemPersistentAcceptOnceFileListFilter.

一切正常，它将文件的状态保存在数据库中 (MySQL)。问题是：当我尝试读取同一个文件两次时出现异常：

org.springframework.core.convert.support.DefaultConversionService.getSharedInstance()Lorg/springframework/core/convert/ConversionService;

有遇到同样情况的吗？谢谢！

详细例外情况：

SEVERE: java.lang.NoSuchMethodError: org.springframework.core.convert.support.DefaultConversionService.getSharedInstance()Lorg/springframework/core/convert/ConversionService;
    at org.springframework.jdbc.core.SingleColumnRowMapper.<init>(SingleColumnRowMapper.java:53)
    at org.springframework.jdbc.core.JdbcTemplate.getSingleColumnRowMapper(JdbcTemplate.java:1291)
    at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:797)
    at org.springframework.integration.jdbc.metadata.JdbcMetadataStore.putIfAbsent(JdbcMetadataStore.java:134)
    at org.springframework.integration.file.filters.AbstractPersistentAcceptOnceFileListFilter.accept(AbstractPersistentAcceptOnceFileListFilter.java:77)
    at org.springframework.integration.file.filters.AbstractFileListFilter.filterFiles(AbstractFileListFilter.java:40)
    at org.springframework.integration.file.filters.CompositeFileListFilter.filterFiles(CompositeFileListFilter.java:108)
    at org.springframework.integration.file.DefaultDirectoryScanner.listFiles(DefaultDirectoryScanner.java:86)
    at org.springframework.integration.file.FileReadingMessageSource.scanInputDirectory(FileReadingMessageSource.java:293)
    at org.springframework.integration.file.FileReadingMessageSource.receive(FileReadingMessageSource.java:272)
    at org.springframework.integration.endpoint.SourcePollingChannelAdapter.receiveMessage(SourcePollingChannelAdapter.java:175)
    at org.springframework.integration.endpoint.AbstractPollingEndpoint.doPoll(AbstractPollingEndpoint.java:224)
    at org.springframework.integration.endpoint.AbstractPollingEndpoint.access[=12=]0(AbstractPollingEndpoint.java:57)
    at org.springframework.integration.endpoint.AbstractPollingEndpoint.call(AbstractPollingEndpoint.java:176)
    at org.springframework.integration.endpoint.AbstractPollingEndpoint.call(AbstractPollingEndpoint.java:173)
    at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller.run(AbstractPollingEndpoint.java:330)
    at org.springframework.integration.util.ErrorHandlingTaskExecutor.run(ErrorHandlingTaskExecutor.java:55)
    at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50)
    at org.springframework.integration.util.ErrorHandlingTaskExecutor.execute(ErrorHandlingTaskExecutor.java:51)
    at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller.run(AbstractPollingEndpoint.java:324)
    at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
    at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
    at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:514)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:299)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
    at java.base/java.lang.Thread.run(Thread.java:844)

Answer 1

java.lang.NoSuchMethodError: org.springframework.core.convert.support.DefaultConversionService.getSharedInstance()Lorg/springframework/core/convert/ConversionService; 表示您使用不兼容的 Spring 集成和 Spring 框架版本。对于 Spring 集成，您应该只依赖传递依赖项。或者甚至更好地使用 Spring 引导依赖管理。

Answer 2

是的，对我来说也是依赖性问题。当我在项目目录中看到库列表时，版本存在冲突。
我在项目中使用 Spring-Security(4.2.5) 和 Spring framework(4.2.5)。
Maven 正在下载 "spring-jdbc" 和 "spring-tx" 依赖项 (4.3.15) 构建中的库版本。
其余所有依赖项默认为 4.2.5。
所以我在pom.xml"spring-jdbc"中手动添加了maven依赖到（4.2.5），解决了问题。

Spring 集成 JDBC 元数据存储

Spring Integration JDBC metadata store

spring

metadata

jdbc

spring-integration