Question

我有一个使用maven和sbt的Java 1.6 + Scala 2.9.2项目。当我添加guava Cache类时，项目开始在测试中抛出此异常：

java.lang.IncompatibleClassChangeError: 
class com.google.common.cache.CacheBuilder$3 has interface 
com.google.common.base.Ticker as super class

使sbt clean compile完美无缺，但sbt clean test会抛出此异常。

番石榴的版本是13.0

引发异常的模块有：

import com.google.common.cache.{CacheBuilder, Cache}
...
val cache: Cache[String, Integer] = CacheBuilder.newBuilder()  
     .maximumSize(5000).build()

我的sbt依赖是：

libraryDependencies ++= Seq(
    "org.scala-tools.testing" %% "scalacheck" % "1.9" % "test" changing(),
    "org.specs2" %% "specs2" % "1.9" % "test"
)

maven依赖项是：

<dependencies>
    <dependency>
      <groupId>org.apache.thrift</groupId>
      <artifactId>libthrift</artifactId>
      <version>0.8.0</version>
    </dependency>
    <dependency>
      <groupId>com.google.guava</groupId>
      <artifactId>guava</artifactId>
      <version>13.0</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>1.6.6</version>
    </dependency>
    <dependency>
      <groupId>redis.clients</groupId>
      <artifactId>jedis</artifactId>
      <version>2.0.0</version>
      <type>jar</type>
    </dependency>
    <dependency>
      <groupId>com.googlecode.json-simple</groupId>
      <artifactId>json-simple</artifactId>
      <version>1.1</version>
    </dependency>
    <dependency>
      <groupId>org.apache.zookeeper</groupId>
      <artifactId>zookeeper</artifactId>
      <version>3.3.1</version>
    </dependency>
    <dependency>
      <groupId>org.scalatest</groupId>
      <artifactId>scalatest_2.9.1</artifactId>
      <version>1.8</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.8</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.mockito</groupId>
      <artifactId>mockito-all</artifactId>
      <version>1.9.0</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.hamcrest</groupId>
      <artifactId>hamcrest-all</artifactId>
      <version>1.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>com.novocode</groupId>
      <artifactId>junit-interface</artifactId>
      <version>0.8</version>
      <scope>test</scope>
    </dependency>
  </dependencies>

Answer 1

在Guava 13之前，Ticker从Interface更改为抽象类。

这在测试中发生但不是编译的事实是一个很好的指标。

我认为Guava的早期版本最终会出现在您的测试类路径上，可能是一个传递依赖。

您可以尝试使用sbt-inspectr来探索测试类路径并了解更多内容，或者您可以尝试排除，例如：

"org.scala-tools.testing" %% "scalacheck" % "1.9" % "test" changing(), excludeAll(
    ExclusionRule(organization = "com.google.guava")
)

使用sbt测试guava代码时出现IncompatibleClassChangeError

1 个答案: