尝试使用XUL代码在Windows临时目录中编写文件:
function writeFile_launch_application(utility_name,utility_path)
{
var data ='tasklist /nh /fi "imagename eq '+utility_name+'" | find /i "'+utility_name+'">nul && (echo alerady running) || ("'+utility_path+'")';
//alert(data);
var file = Cc["@mozilla.org/file/directory_service;1"].
getService(Ci.nsIProperties).
get("TmpD", Ci.nsIFile);
file.append("launch_application.bat");
file.createUnique(Ci.nsIFile.NORMAL_FILE_TYPE, 0666);
// Then, we need an output stream to our output file.
var ostream = Cc["@mozilla.org/network/file-output-stream;1"].
createInstance(Ci.nsIFileOutputStream);
ostream.init(file, -1, -1, 0);
// Finally, we need an input stream to take data from.
const TEST_DATA = data;
let istream = Cc["@mozilla.org/io/string-input-stream;1"].
createInstance(Ci.nsIStringInputStream);
istream.setData(TEST_DATA, TEST_DATA.length);
NetUtil.asyncCopy(istream, ostream, function(aResult) {
if (!Components.isSuccessCode(aResult)) {
// an error occurred!
}
})
}
但是得到错误:
Timestamp: 11/29/2012 11:03:09 PM
Error: ReferenceError: Cc is not defined
Source File: chrome://myaddon/content/overlay.js
Line: 199
我还尝试在代码顶部添加以下行,但它没有解决上述错误:
Components.utils.import("resource://gre/modules/NetUtil.jsm");
Components.utils.import("resource://gre/modules/FileUtils.jsm");
答案 0 :(得分:1)
Cc和Ci分别是Components.classes和Components.interfaces的别名。
取决于他们可能(或可能不)已经定义的上下文。
无论如何
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cu = Components.utils;
const Cr = Components.results;
(您不应将问题标记为firefox-addon-sdk
)
答案 1 :(得分:0)
当我开发插件时,我总是尝试用Components.utils
和Components.intefaces
替换Cu
,Ci
。为此,我文件中的第一行是:
const { Cc, Ci, Cu } = require('chrome');
Cc
是Component.classes
。比你现在可以使用
Cu.import("resource://gre/modules/FileUtils.jsm");
Cu.import("resource://gre/modules/NetUtil.jsm");