缺少工件 com.sun:tools:jar

发布于 2024-12-19 05:45:27 字数 2561 浏览 2 评论 0原文

我一直在关注入门教程，但在使用 Maven 导入 playn 项目后陷入困境。我正在使用在 64 位 Windows 7 上运行的 Eclipse Indigo。

所有导入的项目都有相同的错误：

Missing Artifact com.sun:tools:jar in all the pom.xml files.

在搜索论坛几个小时后，我尝试过：

安装最新的 Java 1.6.029 更改我的 JAVA_HOME 环境变量以指向 \program files\Java\jdk1.6_029 更改我的 Eclipse Java 首选项以使用 JRE jdk1.6_029。

我真的很想尝试 playn，但为什么有一些帖子我似乎无法找到解决方案的共识答案。有些人说 Sun 从 64 位 jdk 中删除了某些内容，其他人说您必须编辑 xml 文件，许多人说您已经更改了 JAVA_HOME，还有人说您必须更改 Eclipse 的 VM 选项。

任何有关清除此问题的帮助将不胜感激，并且可能对许多人有用，因为我在这里没有特别奇怪的设置。

（编辑）这是第一个项目中的 pom.xml。 Eclipse 标记行中的错误，其中显示：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <parent>
    <groupId>com.googlecode.playn</groupId>
    <artifactId>playn-project</artifactId>
    <version>1.1-SNAPSHOT</version>
  </parent>

  <artifactId>playn-android</artifactId>
  <name>PlayN Android</name>
  <packaging>jar</packaging>

  <repositories>
  </repositories>

  <dependencies>
    <dependency>
      <groupId>com.googlecode.playn</groupId>
      <artifactId>playn-core</artifactId>
      <version>${project.version}</version>
    </dependency>

    <!-- needed because Android uses the same JSON code as playn-java;
         that should be factored into a library shared by both backends -->
    <dependency>
      <groupId>com.googlecode.playn</groupId>
      <artifactId>playn-java</artifactId>
      <version>${project.version}</version>
    </dependency>

    <dependency>
      <groupId>com.google.android</groupId>
      <artifactId>android</artifactId>
      <version>${android.version}</version>
      <scope>provided</scope>
    </dependency>

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>

  <build>
    <sourceDirectory>src</sourceDirectory>
  </build>
</project>

原文

I've been following the getting started tutorial, but am stuck after I imported the playn project using Maven. I am using Eclipse Indigo running on 64bit Windows 7.

All the imported projects have the same error:

Missing Artifact com.sun:tools:jar in all the pom.xml files.

After a couple hours of searching forums I have tried:

Installing the latest Java 1.6.029
Changing my JAVA_HOME environment variable to point to \program files\Java\jdk1.6_029
Changing my Eclipse Java preferences to use the JRE jdk1.6_029.

I would really like to experiment with playn, but why there are a few posts I can't seem to find a consenus answer on the solution. Some people say Sun removed something from the 64bit jdk, others say you must edit your xml files, many people have said you have change your JAVA_HOME, and another said you have to change your VM options for Eclipse.

Any help on clearing this up would be appreciated, and possibly useful for many, since I do not have a particularly odd setup here.

(edit)
Here is the pom.xml in the first project. Eclipse flags error in the line which says:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <parent>
    <groupId>com.googlecode.playn</groupId>
    <artifactId>playn-project</artifactId>
    <version>1.1-SNAPSHOT</version>
  </parent>

  <artifactId>playn-android</artifactId>
  <name>PlayN Android</name>
  <packaging>jar</packaging>

  <repositories>
  </repositories>

  <dependencies>
    <dependency>
      <groupId>com.googlecode.playn</groupId>
      <artifactId>playn-core</artifactId>
      <version>${project.version}</version>
    </dependency>

    <!-- needed because Android uses the same JSON code as playn-java;
         that should be factored into a library shared by both backends -->
    <dependency>
      <groupId>com.googlecode.playn</groupId>
      <artifactId>playn-java</artifactId>
      <version>${project.version}</version>
    </dependency>

    <dependency>
      <groupId>com.google.android</groupId>
      <artifactId>android</artifactId>
      <version>${android.version}</version>
      <scope>provided</scope>
    </dependency>

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>

  <build>
    <sourceDirectory>src</sourceDirectory>
  </build>
</project>

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第七度阳光i 2024-12-26 05:45:27

我刚刚在这个问题上发布了关于同一问题以及我如何解决了它，但我也会将其粘贴（并扩展）在这里，因为它看起来更相关。

在 Windows 7 中使用 Eclipse 时，我遇到了同样的问题，即使我从 Eclipse 设置中的 JRE 列表中删除了 JRE，而只保留了 JDK。

我最终要做的（正如您在问题中提到的）是修改我用来启动 Eclipse 的快捷方式的命令行，以添加 -vm 参数，如下所示：

-vm "T:\Program Files\Java\jdk1.6.0_26\bin"

当然，您可以将其调整为指向 JDK 安装的 bin 目录。这样做的目的是使 Eclipse 本身使用 JDK 而不是 JRE 运行，然后它能够正确找到 tools.jar。

我相信这与 Eclipse 在未指定 JRE 时如何找到其默认 JRE 有关。我猜它倾向于选择 JRE 而不是 JDK（为什么，我不知道）并选择它找到的第一个兼容的 JRE。如果它像 Vladiat0r 的答案所建议的那样离开 Windows 注册表项，它会首先查找 HKLM\Software\JavaSoft\Java Runtime Environment 键，而不是 HKLM\Software\JavaSoft\Java Development套件密钥。

I just posted over on this question about this same issue and how I resolved it, but I'll paste (and expand on) it here as well, since it seems more relevant.

I had the same issue when using Eclipse in Windows 7, even when I removed the JRE from the list of JREs in the Eclipse settings and just had the JDK there.

What I ended up having to do (as you mentioned in your question) was modify the command-line for the shortcut I use to launch Eclipse to add the -vm argument to it like so:

-vm "T:\Program Files\Java\jdk1.6.0_26\bin"

Of course, you would adjust that to point to the bin directory of your JDK install. What this does is cause Eclipse itself to be running using the JDK instead of JRE, and then it's able to find the tools.jar properly.

I believe this has to do with how Eclipse finds its default JRE when none is specified. I'm guessing it tends to prefer JRE over JDK (why, I don't know) and goes for the first compatible JRE it finds. And if it's going off of Windows registry keys like Vladiat0r's answer suggests, it looks for the HKLM\Software\JavaSoft\Java Runtime Environment key first instead of the HKLM\Software\JavaSoft\Java Development Kit key.

缺少工件 com.sun:tools:jar

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