小编Gop*_*opi的帖子

有没有什么简单的方法可以在 spring 配置文件中获取主机名？目前我正在使用 Java 代码来获取主机名并自动连接 bean 中的属性。但是如果有的话，寻找更少的编码方法！

谢谢

当 Spring Batch 尝试提交记录时，我收到“提交失败，而步骤执行数据已更新”错误。任何帮助将不胜感激。我正在使用 HIbernate JPA 。

它适用于较少数量的记录。当记录计数很高时抛出错误。

堆栈跟踪：

2016-01-20 08:49:45 INFO  TaskletStep:359 - Commit failed while step execution data was already updated. Reverting to old version.
2016-01-20 08:49:45 ERROR TaskletStep:370 - Rolling back with transaction in unknown state
2016-01-20 08:49:45 ERROR AbstractStep:225 - Encountered an error executing  step uploadFiles in job fileUploadJob
org.springframework.transaction.TransactionSystemException: Could not commit JPA transaction; nested exception is javax.persistence.RollbackException:  Transaction marked as rollbackOnly
at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:524)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:757)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:726)

我想捕获从项目读取器引发的异常（例如读取器未打开，不正确的令牌异常等）并进行处理。当前，春季批处理将它们作为致命的异常抛出，并脱离了这一步。

请告诉我是否有任何方法可以做到？

我试图通过PowerShell安装/更新EPO代理，但出现错误。我是PowerShell的新手，所以我看不到是什么原因造成的。

以下是我用于更新代理的脚本：

Start-Process -FilePath $scriptpath "\INAEPO01_Framepkg.exe" "/FORCEINSTALL" "/INSTALL=AGENT" -Wait

错误：

找不到接受参数/ FORCEINSTALL的位置参数。

由于下面的错误,我无法启动Kafka Server.

java.io.IOException: Map failed
    at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:940)
    at kafka.log.AbstractIndex.<init>(AbstractIndex.scala:61)
    at kafka.log.TimeIndex.<init>(TimeIndex.scala:55)
    at kafka.log.LogSegment.<init>(LogSegment.scala:73)
    at kafka.log.Log.loadSegments(Log.scala:267)
    at kafka.log.Log.<init>(Log.scala:116)
    at kafka.log.LogManager$$anonfun$createLog$1.apply(LogManager.scala:365)
    at kafka.log.LogManager$$anonfun$createLog$1.apply(LogManager.scala:361)
    at scala.Option.getOrElse(Option.scala:121)
    at kafka.log.LogManager.createLog(LogManager.scala:361)
    at kafka.cluster.Partition$$anonfun$getOrCreateReplica$1.apply(Partition.scala:109)
    at kafka.cluster.Partition$$anonfun$getOrCreateReplica$1.apply(Partition.scala:106)
    at kafka.utils.Pool.getAndMaybePut(Pool.scala:70)
    at kafka.cluster.Partition.getOrCreateReplica(Partition.scala:105)
    at kafka.cluster.Partition$$anonfun$4$$anonfun$apply$3.apply(Partition.scala:166)
    at kafka.cluster.Partition$$anonfun$4$$anonfun$apply$3.apply(Partition.scala:166)
    at scala.collection.mutable.HashSet.foreach(HashSet.scala:78)
    at kafka.cluster.Partition$$anonfun$4.apply(Partition.scala:166)
    at kafka.cluster.Partition$$anonfun$4.apply(Partition.scala:160)
    at kafka.utils.CoreUtils$.inLock(CoreUtils.scala:213)
    at kafka.utils.CoreUtils$.inWriteLock(CoreUtils.scala:221)
    at kafka.cluster.Partition.makeLeader(Partition.scala:160)
    at kafka.server.ReplicaManager$$anonfun$makeLeaders$4.apply(ReplicaManager.scala:754)
    at kafka.server.ReplicaManager$$anonfun$makeLeaders$4.apply(ReplicaManager.scala:753)
    at scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
    at scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
    at scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
    at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
    at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
    at kafka.server.ReplicaManager.makeLeaders(ReplicaManager.scala:753)
    at kafka.server.ReplicaManager.becomeLeaderOrFollower(ReplicaManager.scala:698)
    at kafka.server.KafkaApis.handleLeaderAndIsrRequest(KafkaApis.scala:148)
    at kafka.server.KafkaApis.handle(KafkaApis.scala:84)
    at kafka.server.KafkaRequestHandler.run(KafkaRequestHandler.scala:62)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.OutOfMemoryError: Map failed …