无法在Ubuntu中使用Java压缩空文件夹

该项目允许用户下载一个文件，下载的文件将是压缩文件。下载的压缩文件运行良好，只是压缩文件夹中不会包含空文件夹。其中一位开发人员使用MacBook实现了下面的代码，这不会触发任何错误。然而，当源代码在ubuntu机器中执行时，就会发生错误

守则：

def zipFolder(folderNamePath: String, subDirectory: String,zip: ZipOutputStream): Unit = {

    val file = new File(folderNamePath)
    val readBuffer = new Array[Byte](Buffer)
    val fileList = file.list()

    var i = 0
    for( i <- 0 until fileList.length ){
      val path = folderNamePath + "/" + fileList(i)
      val currFile = new File(path)
      if(currFile.isDirectory){
        val filePath = currFile.getPath
        zipFolder(filePath, subDirectory + '/' + fileList(i) ,zip)

      }else{
        val anEntry = new ZipEntry(subDirectory + '/' + fileList(i))
        val bis = new BufferedInputStream(new FileInputStream(path), Buffer)
        zip.putNextEntry(anEntry)
        var bytesIn: Int = -1
        while({
          bytesIn = bis.read(readBuffer, 0, Buffer)
          bytesIn != -1
        }){
          zip.write(readBuffer, 0, bytesIn);
        }

        bis.close()
      }
    }

    //THE CODE BELOW IS TO ZIP EMPTY DIRECTORY
    if(fileList.length == 0){
      val path = folderNamePath
      val anEntry = new ZipEntry(subDirectory)
      val bis = new BufferedInputStream(new FileInputStream(path + "/"), Buffer)
      zip.putNextEntry(anEntry)

      bis.close()
    }

  }

并记录错误：

! @75akh0a6a - Internal server error, for (POST) 
[/storage_ws/download_directory_file] ->

play.api.http.HttpErrorHandlerExceptions$$anon$1: Execution 
exception[[FileNotFoundException: /home/jarvis/project/storage-api/media/jarvis/test/Test/Testing (Is a directory)]]
at play.api.http.HttpErrorHandlerExceptions$.throwableToUsefulException(HttpErrorHandler.scala:280)
at play.api.http.DefaultHttpErrorHandler.onServerError(HttpErrorHandler.scala:206)
at play.api.GlobalSettings$class.onError(GlobalSettings.scala:160)
at play.api.DefaultGlobal$.onError(GlobalSettings.scala:188)
at play.api.http.GlobalSettingsHttpErrorHandler.onServerError(HttpErrorHandler.scala:98)
at play.filters.cors.AbstractCORSPolicy$$anonfun$2.applyOrElse(AbstractCORSPolicy.scala:146)
at play.filters.cors.AbstractCORSPolicy$$anonfun$2.applyOrElse(AbstractCORSPolicy.scala:145)
at scala.concurrent.Future$$anonfun$recoverWith$1.apply(Future.scala:346)
at scala.concurrent.Future$$anonfun$recoverWith$1.apply(Future.scala:345)
at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:32)
Caused by: java.io.FileNotFoundException: /home/jarvis/project/storage-api/media/user/jarvis/Test/Testing (Is a directory)
at java.io.FileInputStream.open0(Native Method)
at java.io.FileInputStream.open(FileInputStream.java:195)
at java.io.FileInputStream.<init>(FileInputStream.java:138)
at java.io.FileInputStream.<init>(FileInputStream.java:93)
at tools.ZipUtils$.zipFolder(ZipUtils.scala:122)
at tools.ZipUtils$$anonfun$zipFolder$1.apply$mcVI$sp(ZipUtils.scala:101)
at scala.collection.immutable.Range.foreach$mVc$sp(Range.scala:160)
at tools.ZipUtils$.zipFolder(ZipUtils.scala:96)
at tools.IO$.handleDownloadDirectoryFile(IO.scala:176)
at controllers.FileHandleController$$anonfun$downloadDirectoryFile$1$$anonfun$apply$50.apply(FileHandleController.scala:586)

---

代码执行得很好，没有以下情况：iffileList.length==0{压缩空文件夹，压缩后的文件夹将排除空文件夹。

出现问题的原因是您试图在目录而不是文件上打开FileInputStream

实际上，您可以在此处看到异常消息：

Caused by: java.io.FileNotFoundException: /home/jarvis/project/storage-api/media/user/jarvis/Test/Testing (Is a directory)
at java.io.FileInputStream.open0(Native Method)

这是一个稍微修改过的方法版本，应该可以解决这个问题。请注意，我用File.separator替换了所有出现的“/”项

def zipFolder(folderNamePath: String, subDirectory: String,zip: ZipOutputStream): Unit = {

    val file = new File(folderNamePath)
    val readBuffer = new Array[Byte](Buffer)
    val fileList = file.list()

    var i = 0
    for( i <- 0 until fileList.length ){
      val currFile = new File(folderNamePath, fileList(i))
      if(currFile.isDirectory){
        val filePath = currFile.getPath
        zipFolder(filePath, subDirectory + File.separator + fileList(i) ,zip)

      }else{
        val path = folderNamePath + File.separator + fileList(i)
        val anEntry = new ZipEntry(subDirectory + File.separator + fileList(i))
        val bis = new BufferedInputStream(new FileInputStream(path), Buffer)
        zip.putNextEntry(anEntry)
        var bytesIn: Int = -1
        while({
          bytesIn = bis.read(readBuffer, 0, Buffer)
          bytesIn != -1
        }){
          zip.write(readBuffer, 0, bytesIn);
        }

        bis.close()
      }
    }

    //THE CODE BELOW IS TO ZIP EMPTY DIRECTORY
    if(fileList.length == 0){
      zip.putNextEntry(new ZipEntry(subDirectory + File.separator))
      zip.closeEntry()
    }
}

---

空文件夹只有在解压缩文件时才可见。至少，对于Ubuntu默认的zip toolArchive Manage

来说，尝试使用Apache Commons IO中的FilenameUtils类或java.nio中的Paths类。有很多有用的方法。在跨平台开发中遇到困难时总是能帮到我。很幸运上面的代码ks！但是有一个缺陷，空文件夹变成了未知文件。你知道吗？我在zip.putnextryNew ZipEntrysubDirectory+/中添加了/。空文件夹又消失了。听说：压缩后如何解决空文件夹变成未知文件的问题？在结尾添加/没有帮助=尝试在zip.putNext之后使用：zip.closeEntry进入呼叫。请参阅上面的编辑。