这是有点类似these.

属性从文件的properties.txt 加载。
这里的弱点是，在您输入文本的 $ {所有出现被转换为 {的前令牌替换 - 如果该字符串出现在文本其他地方这很可能打破东西。如果这是一个问题，它仍然奥特可以适应该溶液中。

Properties are loaded from the file properties.txt. The weakness here is that all occurrences of ${ in your input text are converted to { before the token substitution - which may well break things if that string appears elsewhere in the text. If that is a problem, it still aught to be possible to adapt this solution.

<copy file="input.txt" tofile="output.txt">
    <filterchain>
    <replaceregex pattern="\$\{" replace="{" />
    <filterreader classname="org.apache.tools.ant.filters.ReplaceTokens">
            <param type="propertiesfile" value="properties.txt"/>
            <param type="tokenchar" name="begintoken" value="{"/>
            <param type="tokenchar" name="endtoken" value="}"/>
    </filterreader>
    </filterchain>
</copy>