Question

我将pom.xml中的版本依赖关系更新为：

    <dependency>
        <groupId>com.twelvemonkeys.imageio</groupId>
        <artifactId>imageio</artifactId>
        <version>3.2.1</version>
    </dependency>
    <dependency>
        <groupId>com.twelvemonkeys.imageio</groupId>
        <artifactId>imageio-jpeg</artifactId>
        <version>3.2.1</version>
    </dependency>

运行时

     mvn package

我们看到正在下载新版本：

[INFO] ------------------------------------------------------------------------
Downloading: https://repository.apache.org/content/repositories/snapshots/com/twelvemonkeys/imageio/imageio-jpeg/3.2.1/imageio-jpeg-3.2.1.pom
Downloading: https://repo.maven.apache.org/maven2/com/twelvemonkeys/imageio/imageio-jpeg/3.2.1/imageio-jpeg-3.2.1.pom
Downloaded: https://repo.maven.apache.org/maven2/com/twelvemonkeys/imageio/imageio-jpeg/3.2.1/imageio-jpeg-3.2.1.pom (2 KB at 8.0 KB/sec)
Downloading: https://repository.apache.org/content/repositories/snapshots/com/twelvemonkeys/imageio/imageio-core/3.2.1/imageio-core-3.2.1.pom
Downloading: https://repo.maven.apache.org/maven2/com/twelvemonkeys/imageio/imageio-core/3.2.1/imageio-core-3.2.1.pom
Downloaded: https://repo.maven.apache.org/maven2/com/twelvemonkeys/imageio/imageio-core/3.2.1/imageio-core-3.2.1.pom (1004 B at 22.3 KB/sec)
Downloading: https://repository.apache.org/content/repositories/snapshots/com/twelvemonkeys/imageio/imageio-metadata/3.2.1/imageio-metadata-3.2.1.pom
Downloading: https://repo.maven.apache.org/maven2/com/twelvemonkeys/imageio/imageio-metadata/3.2.1/imageio-metadata-3.2.1.pom
Downloaded: https://repo.maven.apache.org/maven2/com/twelvemonkeys/imageio/imageio-metadata/3.2.1/imageio-metadata-3.2.1.pom (974 B at 20.7 KB/sec)
Downloading: https://repository.apache.org/content/repositories/snapshots/com/twelvemonkeys/imageio/imageio-jpeg/3.2.1/imageio-jpeg-3.2.1.jar
Downloading: https://repository.apache.org/content/repositories/snapshots/com/twelvemonkeys/imageio/imageio-core/3.2.1/imageio-core-3.2.1.jar
Downloading: https://repository.apache.org/content/repositories/snapshots/com/twelvemonkeys/imageio/imageio-metadata/3.2.1/imageio-metadata-3.2.1.jar
Downloading: https://repo.maven.apache.org/maven2/com/twelvemonkeys/imageio/imageio-jpeg/3.2.1/imageio-jpeg-3.2.1.jar
Downloading: https://repo.maven.apache.org/maven2/com/twelvemonkeys/imageio/imageio-core/3.2.1/imageio-core-3.2.1.jar
Downloading: https://repo.maven.apache.org/maven2/com/twelvemonkeys/imageio/imageio-metadata/3.2.1/imageio-metadata-3.2.1.jar
Downloaded: https://repo.maven.apache.org/maven2/com/twelvemonkeys/imageio/imageio-jpeg/3.2.1/imageio-jpeg-3.2.1.jar (58 KB at 145.8 KB/sec)
Downloaded: https://repo.maven.apache.org/maven2/com/twelvemonkeys/imageio/imageio-core/3.2.1/imageio-core-3.2.1.jar (64 KB at 152.0 KB/sec)
Downloaded: https://repo.maven.apache.org/maven2/com/twelvemonkeys/imageio/imageio-metadata/3.2.1/imageio-metadata-3.2.1.jar (72 KB at 171.7 KB/sec)

然而package目标仍然失败.. 无法解析其中一个相同的依赖关系（imageio.jar:3.2.1）？

[INFO] -------------------------------------------------- ---------------------- [INFO] BUILD FAILURE [INFO] -------------------------------------------------- ---------------------- [INFO]总时间：2.911 s [INFO]完成于： 2016-06-21T13：21：39-07：00 [INFO]最终记忆：17M / 221M [INFO] -------------------------------------------------- ---------------------- [错误]无法在项目sparknet上执行目标：无法解决项目org.amplab的依赖项：sparknet：jar：1.0：找不到 com.twelvemonkeys.imageio：imageio：jar：3.2.1 in https://repository.apache.org/content/repositories/snapshots是缓存在本地存储库中，不会重新尝试解析直到Maven快照存储库的更新间隔已经过去或强制更新 - ＆gt; [帮助1] [错误]

Answer 1

您需要使用-U来强制maven忽略本地存储库中的缓存工件并更新它们。 mvn package -U

Answer 2

问题似乎是3.1.2和3.2.1 imagio版本的imageio-core他们重组了他们的模块。现在他们有imageio而不是<dependency> <groupId>com.twelvemonkeys.imageio</groupId> <artifactId>imageio-core</artifactId> <version>3.2.1</version> </dependency>。

所以..更新pom.xml如下：

imageio-core

（使用imageio代替$.ajax({ type: 'GET', url: "https://DOMAINNAME.com", contentType: "application/json", dataType: 'jsonp', success: function(data) { console.log(data) }, error: function(e) { console.log(e.message); } });）似乎已经解决了它。

Maven下载jar但后来报告“无法解析依赖关系”

2 个答案: