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      Node.js fs filehandle.readFile

      Node.js fs filehandle.readFile(options)

      新增于: v10.0.0

      • options < Object> | < string>
        • encoding < string> | < null> Default: null
        • flag < string> See support of file system flags. Default: ‘r’.
      • Returns:

      Asynchronously reads the entire contents of a file.

      The Promise is resolved with the contents of the file. If no encoding is specified (using options.encoding), the data is returned as a Buffer object. Otherwise, the data will be a string.

      If options is a string, then it specifies the encoding.

      When the path is a directory, the behavior of fsPromises.readFile() is platform-specific. On macOS, Linux, and Windows, the promise will be rejected with an error. On FreeBSD, a representation of the directory’s contents will be returned.

      The FileHandle has to support reading.

      If one or more filehandle.read() calls are made on a file handle and then a filehandle.readFile() call is made, the data will be read from the current position till the end of the file. It doesn’t always read from the beginning of the file.


      更多内容请参考:Node.js fs 文件系统,或者通过 点击对应菜单 进行查看;


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