求助前辈们！

[yuanqih]

今天下载了Anaconda但怎么都打不开notebook
还出现了以下[I 17:27:48.519 NotebookApp] The port 8888 is already in use, trying another port.
[I 17:27:48.521 NotebookApp] The port 8889 is already in use, trying another port.
[I 17:27:48.522 NotebookApp] The port 8890 is already in use, trying another port.
[I 17:27:48.524 NotebookApp] The port 8891 is already in use, trying another port.
[I 17:27:48.524 NotebookApp] The port 8892 is already in use, trying another port.
[I 17:27:48.572 NotebookApp] JupyterLab beta preview extension loaded from D:\Users\ANACONDA\lib\site-packages\jupyterlab
[I 17:27:48.573 NotebookApp] JupyterLab application directory is D:\Users\ANACONDA\share\jupyter\lab
[W 17:27:48.659 NotebookApp] Error loading server extension jupyterlab
Traceback (most recent call last):
File "D:\Users\ANACONDA\lib\site-packages\jupyterlab\commands.py", line 321, in __init__
self._run(['node', 'node-version-check.js'], cwd=HERE, quiet=True)
File "D:\Users\ANACONDA\lib\site-packages\jupyterlab\commands.py", line 1165, in _run
proc = Process(cmd, **kwargs)
File "D:\Users\ANACONDA\lib\site-packages\jupyterlab\process.py", line 73, in __init__
self.proc = self._create_process(cwd=cwd, env=env)
File "D:\Users\ANACONDA\lib\site-packages\jupyterlab\process.py", line 131, in _create_process
cmd[0] = which(cmd[0], kwargs.get('env'))
File "D:\Users\ANACONDA\lib\site-packages\jupyterlab\jlpmapp.py", line 59, in which
raise ValueError(msg)
ValueError: Please install nodejs 5+ and npm before continuing installation. nodejs may be installed using conda or directly from the nodejs website.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "D:\Users\ANACONDA\lib\site-packages\notebook\notebookapp.py", line 1454, in init_server_extensions
func(self)
File "D:\Users\ANACONDA\lib\site-packages\jupyterlab\extension.py", line 111, in load_jupyter_server_extension
info = get_app_info(app_dir)
File "D:\Users\ANACONDA\lib\site-packages\jupyterlab\commands.py", line 244, in get_app_info
handler = _AppHandler(app_dir, logger)
File "D:\Users\ANACONDA\lib\site-packages\jupyterlab\commands.py", line 324, in __init__
raise ValueError(msg)
ValueError: Please install nodejs 5+ and npm before continuing installation. nodejs may be installed using conda or directly from the nodejs website.
[I 17:27:49.074 NotebookApp] Serving notebooks from local directory: C:\Users\lih05
[I 17:27:49.074 NotebookApp] 0 active kernels
[I 17:27:49.074 NotebookApp] The Jupyter Notebook is running at:
[I 17:27:49.074 NotebookApp] http://localhost:8943/?token=2ccb7148fa1f4183b372bd306d25acd9630eb565499ff240
[I 17:27:49.074 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 17:27:49.076 NotebookApp]

Copy/paste this URL into your browser when you connect for the first time,
to login with a token:
http://localhost:8943/?token=2ccb7148fa1f4183b372bd306d25acd9630eb565499ff240
[I 17:27:49.913 NotebookApp] Accepting one-time-token-authenticated connection from ::1