java - 包包含具有相同名称的对象和包

Question

我在使用 Maven 或 Eclipse 编译某些 Scala 时遇到问题，我尝试从 Java jar 中导入一个类，该类同时包含 namespace 和同名类。
不过，我可以使用 scalac 进行编译。

例如Java 项目 (jar) 包含:

src/foo/bar.java

src/foo/bar/some_resource.txt

-> foobar.jar

Scala project references foobar.jar

Foobartest.scala:

import foo.bar

class foobartest {

}

编译器提示:

package foo contains object and package with same name: bar 
one of them needs to be removed from classpath

将 Maven 3.0.03/Eclipse 3.7.1 与 Scala 2.9.0.1(和 maven-scala-plugin)结合使用。

我遇到问题的 jar 是 jenkins-core-1.399.jar - 它肯定包含多个实例，其中有一个 namespace 和同名对象。
我正在尝试在 Scala 中编写一个 Jenkins 插件(我可以在 Java 中执行此操作，但我更喜欢 scala，因为我们所有的库都在 scala 中)，这取决于使用 Maven -
https://wiki.jenkins-ci.org/display/JENKINS/Plugin+tutorial .

Answer 1

SI-4695: package object misbehaves in the presence of classfiles 中概述了这种限制.

如 SI-2089 (naming restriction makes some jars unusable) 中的建议，您可以尝试使用“resolve-term-conflict”，如 changeset 25145 中所实现的那样:

Added a -Y option to resolve namespace collisions between package and object.
It's a blunt instrument: if people have lots of these conflicts they need to resolve in individually nuanced fashion, they'll probably remain out of luck.

val termConflict  = ChoiceSetting     ("-Yresolve-term-conflict", "strategy", "Resolve term conflicts", 113 List("package", "object", "error"), "error")

// Some jars (often, obfuscated ones) include a package and
// object with the same name. Rather than render them unusable,
// offer a setting to resolve the conflict one way or the other.
// This was motivated by the desire to use YourKit probes, which
// require `yjp.jar` at runtime. See SI-2089.