HTML5 fileWriter.write 不写入本地文件

Question

我正在编写 HTML5 文件系统-API 的教程。基本上我想写一个文件到我的机器。我正在使用 python 的 simpleHTTPServer 来为网站提供服务。加载网页后，控制台不会引发错误，我会收到一条消息，提示写入成功。但我无法在我的机器上的任何地方找到该文件。这是我的代码：

function onInitFs(fs) {

  fs.root.getFile('zz11zzlog.txt', {create: true}, function(fileEntry) {

    // Create a FileWriter object for our FileEntry (log.txt).
    fileEntry.createWriter(function(fileWriter) {

      fileWriter.onwriteend = function(e) {
        console.log('Write completed.');
      };

      fileWriter.onerror = function(e) {
        console.log('Write failed: ' + e.toString());
      };

      // Create a new Blob and write it to log.txt.
      var blob = new Blob(['Lorem Ipsum'], {type: 'text/plain'});

      fileWriter.write(blob);

    }, errorHandler);

  }, errorHandler);

}

function errorHandler(e) {
  var msg = '';

  switch (e.code) {
    case FileError.QUOTA_EXCEEDED_ERR:
      msg = 'QUOTA_EXCEEDED_ERR';
      break;
    case FileError.NOT_FOUND_ERR:
      msg = 'NOT_FOUND_ERR';
      break;
    case FileError.SECURITY_ERR:
      msg = 'SECURITY_ERR';
      break;
    case FileError.INVALID_MODIFICATION_ERR:
      msg = 'INVALID_MODIFICATION_ERR';
      break;
    case FileError.INVALID_STATE_ERR:
      msg = 'INVALID_STATE_ERR';
      break;
    default:
      msg = 'Unknown Error';
      break;
  };

  console.log('Error: ' + msg);
}
window.webkitRequestFileSystem(window.TEMPORARY, 1024*1024, onInitFs, errorHandler);

Answer 1

But I can't find the file anywhere on my machine.

如果写入成功，文件将写入 chrome 的本地文件系统或 Default -> File System 目录的 chromium 配置目录。

见How to Write in file (user directory) using JavaScript?

Answer 2

调用这两行进行文件下载

window.requestFileSystem(window.TEMPORARY, fileSize, function(filesystem){
          setTimeout(function() {
          downloadFs(filesystem,fileName);
          }, time);
       }, errorHandler);

 function downloadFs(fs,fileName) {
      fs.root.getFile(fileName, {create: false}, function(fileEntry) {
           console.log("filesystem:"+fileEntry.toURL()) ;
     window.location.href = fileEntry.toURL();
      }, errorHandler); 
  }

HTML5 fileWriter.write 不写入本地文件

HTML5 fileWriter.write doesn't write to local file

html

javascript

html5-filesystem