无法使用离子服务运行多个项目

Question

我正在使用ionic2。以下是ionic info生成的所有信息。我基本上处理两个不同的离子项目，我想同时为它们提供服务。在执行8000时，默认情况下会在端口ionic serve上加载一个项目。我尝试使用ionic serve --port 8101更改第二个端口。但这并没有启动第二个项目。

这是以下错误：

> ionic-hello-world@ ionic:serve /Users/vramos/Workspace/visitorapp
> ionic-app-scripts serve "--port" "8100"

[21:34:57]  ionic-app-scripts 0.0.44 
[21:34:57]  watch started ... 
[21:34:57]  build dev started ... 
[21:34:57]  clean started ... 
[21:34:57]  clean finished in less than 1 ms 
[21:34:57]  copy started ... 
[21:34:57]  transpile started ... 
 events.js:160
      throw er; // Unhandled 'error' event
      ^

Error: listen EADDRINUSE 0.0.0.0:53703
    at Object.exports._errnoException (util.js:1007:11)
    at exports._exceptionWithHostPort (util.js:1030:20)
    at Server._listen2 (net.js:1253:14)
    at listen (net.js:1289:10)
    at net.js:1399:9
    at _combinedTickCallback (internal/process/next_tick.js:77:11)
    at process._tickCallback (internal/process/next_tick.js:98:9)
    at Module.runMain (module.js:577:11)
    at run (node.js:348:7)
    at startup (node.js:140:9)

npm ERR! Darwin 15.6.0
npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "run"
    "ionic:serve" "--" "--port" "8100"
npm ERR! node v6.2.2
npm ERR! npm  v3.9.5
npm ERR! code ELIFECYCLE
npm ERR! ionic-hello-world@ ionic:serve: `ionic-app-scripts serve "
--   port" "8100"`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the ionic-hello-world@ ionic:serve script 'ionic-
 app-  scripts serve "--port" "8100"'.
 npm ERR! Make sure you have the latest version of node.js and
npm   installed.
 npm ERR! If you do, this is most likely a problem with the 
ionic-hello-  world package,
 npm ERR! not with npm itself.
 npm ERR! Tell the author that this fails on your system:
 npm ERR!     ionic-app-scripts serve "--port" "8100"
 npm ERR! You can get information on how to open an issue for
 this project  with:
 npm ERR!     npm bugs ionic-hello-world
 npm ERR! Or if that isn't available, you can get their info via:
 npm ERR!     npm owner ls ionic-hello-world
 npm ERR! There is likely additional logging output above.

 npm ERR! Please include the following file with any support request:
 npm ERR!     /Users/vramos/Workspace/visitorapp/npm-debug.log
 There was an error serving your Ionic application: There was
  an error   with the spawned command: serve

编辑（2016年11月16日）：因此运行ionic serve --port 3000 --dev-log-server 8101的第二个项目。我的终端仍然有错误，只是fyi。

Answer 1

我遇到了同样的问题。

经过一番挖掘后发现，livereload-port使用35729端口，dev-logger-port使用35703端口。

通过运行解决问题： ionic serve --port 8081 --livereload-port 35730 --dev-logger-port 53704

Answer 2

错误是

Error: listen EADDRINUSE 0.0.0.0:53703

所以在某些时候，离子试图使用端口53703，这是不可用的。

$ grep -rns 53703 *
node_modules/@ionic/app-scripts/dist/dev-server/dev-server.js:104:var DEV_LOGGER_DEFAULT_PORT = 53703;

当我运行两个离子实例时，我的系统中没有任何东西使用端口53703。

据说我正在运行ionic-app-scripts 0.0.39，这是rc2教程附带的版本。

几个选项：

• 尝试传递替代开发记录器端口（通过--dev-logger-port）
• 使用lsof找出持有端口53703的内容并终止该进程（lsof | grep 53703）
• 尝试将ionic-app-scripts降级为0.0.39