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我在 scala-ide（eclipse 插件）中开发了一个应用程序，没有错误或警告。现在我正在尝试将其部署到 stax 云：

$ stax deploy

但它无法编译它：

compile:
   [scalac] Compiling 2 source files to /home/gleontiev/workspace/rss2lj/webapp/WEB-INF/classes
error: error while loading FlickrUtils, Scala signature FlickrUtils has wrong version
 expected: 4.1
 found: 5.0
/home/gleontiev/workspace/rss2lj/src/scala/example/snippet/DisplaySnippet.scala:8: error: com.folone.logic.FlickrUtils does not have a constructor
        val dispatcher = new FlickrUtils("8196243@N02")
                         ^
error: error while loading Photo, Scala signature Photo has wrong version
 expected: 4.1
 found: 5.0
/home/gleontiev/workspace/rss2lj/src/scala/example/snippet/DisplaySnippet.scala:9: error: value link is not a member of com.folone.logic.Photo
        val linksGetter = (p:Photo) => p.link
                                         ^
/home/gleontiev/workspace/rss2lj/src/scala/example/snippet/DisplaySnippet.scala:15: error: com.folone.logic.FlickrUtils does not have a constructor
        val dispatcher = new FlickrUtils("8196243@N02")
                         ^
/home/gleontiev/workspace/rss2lj/src/scala/example/snippet/DisplaySnippet.scala:16: error: value medium1 is not a member of com.folone.logic.Photo
        val picsGetter = (p:Photo) => p.medium1
                                        ^
/home/gleontiev/workspace/rss2lj/src/scala/example/snippet/RefreshSnippet.scala:12: error: com.folone.logic.FlickrUtils does not have a constructor
        val dispatcher = new FlickrUtils("8196243@N02")
                         ^
7 errors found
ERROR: : The following error occurred while executing this line:
/home/gleontiev/workspace/rss2lj/build.xml:61: Compile failed with 7 errors; see the compiler error output for details.

我看到两个错误，它在抱怨：第一个是 FlickrUtils 类构造函数，它的定义如下：

class FlickrUtils(val userId : String) {
    //...
}

第二个是事实，Photo 类中缺少两个字段，即：

class Photo (val photoId:String, val userId:String, val secret:String, val server:String) {
    private val _medium1 = "/sizes/m/in/photostream"
    val link = "http://flickr.com/photos/" + userId + "/" + photoId
    val medium1 = link + _medium1
}

似乎 stax sdk 使用了错误的编译器（？）。我如何让它使用正确的？如果不是，这里有什么问题，有什么方法可以解决它？

编辑： $ scala -version说

Scala code runner version 2.8.0.final -- Copyright 2002-2010, LAMP/EPFL

我尝试scalac手动编译所有内容，将所有内容放在他们的位置，然后运行stax deploy​​- 结果相同。

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1 回答 1

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实际上，我通过将类移动到包中解决了这个问题FlickrUtils，Photo最初是片段所在的位置，但我仍然不明白为什么它无法从另一个包中编译和使用它们。

于 2010-08-06T09:06:54.293 回答