gradle - Gradle 任务写入文件时出现问题

Question

我正在开发一个 Android 应用程序，其中有一个 JSON 文件目录，我想创建一个 gradle 任务，将所有这些文件合并到一个 JSON 文件中。

这是我到目前为止的 gradle 任务，但没有创建文件:

// Task that combines all JSON files in ../libraries into src/main/res/raw/libraries.json
task combineJSonFiles {
    String content = ""
    FileTree tree = fileTree(dir: '../libraries', include: '**/*.json')
    tree.each {File file ->
        content += file.getText()
    }

    println "[" + content.substring(0, content.length()-1) + "]" // prints out the correct contents
    File libraries = file("../app/src/main/res/raw/libraries.json")
    println libraries.getProperties()
}

我打印出属性，但我不确定为什么这些是属性值:

{directory=false, canonicalFile=/Users/michaelcarrano/AndroidStudioProjects/detective_droid/app/src/main/res/raw/libraries.json, file=false, freeSpace=0, canonicalPath=/Users/michaelcarrano/AndroidStudioProjects/detective_droid/app/src/main/res/raw/libraries.json, usableSpace=0, hidden=false, totalSpace=0, path=/Users/michaelcarrano/AndroidStudioProjects/detective_droid/app/src/main/res/raw/libraries.json, name=libraries.json, prefixLength=1, absolute=true, class=class java.io.File, parentFile=/Users/michaelcarrano/AndroidStudioProjects/detective_droid/app/src/main/res/raw, absolutePath=/Users/michaelcarrano/AndroidStudioProjects/detective_droid/app/src/main/res/raw/libraries.json, absoluteFile=/Users/michaelcarrano/AndroidStudioProjects/detective_droid/app/src/main/res/raw/libraries.json, parent=/Users/michaelcarrano/AndroidStudioProjects/detective_droid/app/src/main/res/raw}

感谢任何帮助，因为即使在阅读文档后我似乎也没有弄清楚这一点。 http://www.gradle.org/docs/current/userguide/working_with_files.html

Answer 1

我只是发布现在有效的任务的代码:

task combineJSonFiles {
    String content = ""
    FileTree tree = fileTree(dir: '../libraries', include: '**/*.json')
    tree.each {File file ->
        content += file.getText()
    }
    def libraries = new File("app/src/main/res/raw/libraries.json")
    libraries.text = "[" + content.substring(0, content.length()-1) + "]"
}

我的问题是尝试使用 Java.io.File 并为我的文件设置了错误的目录路径。