使用Ant build命令生成目录的校验和 [英] Generate Checksum for directories using Ant build command

问题描述

我试图为目录生成校验和使用 ant 的问题.

I tried to generate the checksum for directory using ant.

我尝试了以下命令，但是它在每个文件的每个文件夹内递归生成.

I have tried the below command, but it generates recursively inside each folder for each file.

<target name="default" depends="">
    <echo message="Generating Checksum for each environment" />
    <checksum todir="${target.output.dir}" format="MD5SUM" >
        <fileset dir="${target.output.dir}" />
    </checksum>
</target>

我只想使用Ant命令为特定目录生成一个checksum. 我该怎么办?

I just want to generate one checksum for particular directory using Ant command. How do I do that?

推荐答案

您要使用totalproperty属性.根据文档此属性will hold a checksum of all the checksums and file paths.

You want to use the totalproperty attribute. As per the documentation this property will hold a checksum of all the checksums and file paths.

例如

<target name="hash">
  <checksum todir="x" format="MD5SUM" totalproperty="sum.of.all">
    <fileset dir="x"/>
  </checksum>
  <echo>${sum.of.all}</echo>
</target>

其他一些一般说明.

• 这不是幂等的.每次运行它时，您将获得一个新值，因为它在新哈希中包含了先前的哈希文件(然后写入了一个新的哈希文件).我建议您将todir属性更改为指向其他位置
• 明智地命名目标是一个好主意.请参阅马丁·福勒(Martin Fowler)的这篇很棒的文章，以获取一些命名想法
• 如果没有依赖项，则不需要depends属性.

• This is not idempotent. Each time you run it you will get a new value because it includes the previous hash file in the new hash (and then writes a new hash file). I suggest that you change the todir attribute to point elsewhere
• It's a good idea to name your targets meaningfully. See this great article by Martin Fowler for some naming ideas
• You don't need the depends attribute if there's no dependency.

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