我对闭包库完全陌生，并且正在开始。我刚刚在我的 windows7 机器上安装了 Python，想要连接和缩小脚本。我按照此处记录的方式运行了一些命令，但没有任何收获。这是一些参数
Python 安装在
c:\python27\python.exe关闭库在
c:\closure\闭包编译器
c:\closure\bin\build\compiler.jar我的 Javascript 文件在
D:\projects\closureapp\js\index.js
index.js 的内容如下
/// <reference path="../closure/base.js" />
/// <reference path="../closure/dom/dom.js" />
/*Hello world into Closure Library Example*/
//Load the dom module
goog.require("goog.dom");
//refer the document body
var pageBody = document.body;
//after the body is loaded execute and add a header
pageBody.onload = function () {
//create a header for the page
var pageHeader = goog.dom.createDom('h1', { 'style': 'background-color:#EEE' }, 'Hello world!');
//append the header to the document body
goog.dom.appendChild(pageBody, pageHeader);
};
我执行了下面的命令来生成编译后的 javascript 但没有任何收获
c:\python27\python.exe c:\closure\bin\build\c
losurebuilder.py --root=closure/ --root=d:\Projects\closureapp\js\ --
output_mode=compiled --compiler_jar=compiler.jar > d:\Projects\closureapp\js\output.js
我收到一些奇怪的消息，如下所示
c:\closure\bin\build\closurebuilder.py: Building dependency tree..
Traceback (most recent call last):
File "c:\closure\bin\build\closurebuilder.py", line 257, in <module> main()
File "c:\closure\bin\build\closurebuilder.py", line 204, in main tree = depstree.DepsTree(sources)
File "c:\closure\bin\build\depstree.py", line 56, in __init__ raise NamespaceNotFoundError(require, source)
depstree.NamespaceNotFoundError: Namespace "goog.async.Deferred" never provided.
Required in Source closure\messaging\portchannel.js