为什么 Akka-Http 仍然使用旧的 Akka-Actor？

Question

我已将最新的 akka-http 添加到我的项目中，但其中包括 akka-actor 上非常旧的 2.4.19 版本。因此，我还在依赖项中添加了 akka-actor 版本 2.5.4。但是，这会导致以下错误：-

Detected java.lang.NoSuchMethodError error, which MAY be caused by incompatible Akka versions on the classpath.

我的maven配置如下：-

<dependencies>
    <dependency>
        <groupId>com.typesafe.akka</groupId>
        <artifactId>akka-http_2.11</artifactId>
        <version>10.0.9</version>
    </dependency>
    <dependency>
        <groupId>com.typesafe.akka</groupId>
        <artifactId>akka-actor_2.11</artifactId>
        <version>2.5.4</version>
    </dependency>
</dependencies>

我错过了什么？有没有使用最新版 akka-actor 的 akka-http 版本？

更新：添加了依赖图

Answer 1

来自文档中的 Compatibility Guidelines 页面：

Akka HTTP 10.0.x is (binary) compatible with both Akka 2.4.x as well as Akka 2.5.x, however in order to facilitate this the build (and thus released artifacts) depend on the 2.4 series. Depending on how you structure your dependencies, you may encounter a situation where you depended on akka-actor of the 2.5 series, and you depend on akka-http from the 10.0 series, which in turn would transitively pull in the akka-streams dependency in version 2.4 which breaks the binary compatibility requirement that all Akka modules must be of the same version, so the akka-streams dependency MUST be the same version as akka-actor (so the exact version from the 2.5 series).

In order to resolve this dependency issue, you must depend on akka-streams explicitly, and make it the same version as the rest of your Akka environment....

将您的 Maven 依赖项更改为以下内容：

<dependencies>
    <dependency>
        <groupId>com.typesafe.akka</groupId>
        <artifactId>akka-actor_2.11</artifactId>
        <version>2.5.4</version>
    </dependency>
    <!-- Explicitly depend on akka-streams in same version as akka-actor -->
    <dependency>
        <groupId>com.typesafe.akka</groupId>
        <artifactId>akka-stream_2.11</artifactId>
        <version>2.5.4</version>
    </dependency>
    <dependency>
        <groupId>com.typesafe.akka</groupId>
        <artifactId>akka-http_2.11</artifactId>
        <version>10.0.9</version>
    </dependency>
</dependencies>

为什么 Akka-Http 仍然使用旧的 Akka-Actor？

Why Akka-Http still uses older Akka-Actor?

maven

akka

akka-http