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我正在学习教程：“在 5 分钟内使用 Node-RED 构建实时聊天应用程序” http://www.ibm.com/developerworks/cloud/library/cl-rtchat-app/

但未启用部署按钮。所以我无法部署。

我已经安装了 CF 命令行并为我的应用程序运行“推送”。这是我在“CFApp”下仪表板的“开始编码”中学到的。它是成功的。

这个“推送”和 Node-Red 编辑器中的“部署”一样吗？

谢谢。

郑

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2 回答 2

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该教程有一个稍微误导性的编辑器屏幕截图，其中有一个空白工作区和一个启用的部署按钮。部署按钮仅在工作空间中有未部署到运行时的更改时才变为活动状态。

'push' 用于将 node-red 应用程序上传到 bluemix。这与将流程部署到应用程序中不同。

于 2015-09-08T09:28:34.707 回答
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部署按钮与 CF 按钮不同。node-red 部署按钮在 node-red 图形 UI 中可用。

创建节点红色应用程序后，您必须启动它。

这是本教程第 1 步中的第 3 个项目符号。在 Bluemix 仪表板上单击应用程序名称以启动它。

显示节点红色应用程序的主窗口（本教程步骤 1 中的项目符号 4）。

单击红色大按钮“转到您的 node-RED 流编辑器”将打开 node-red 流编辑器（显示在步骤 1 的第 5 号项目符号上）。此时您应该会看到一个空白工作表，并且右上角的“部署”按钮应该被禁用。

按照步骤 2 的说明导入 node-red 流（为方便起见，我将其包含在下面）：

[{"id":"bc740d23.438bf","type":"websocket-listener","path":"/ws/chat","wholemsg":"false"},{"id":"c86da933.379258","type":"websocket in","name":"","server":"bc740d23.438bf","x":112,"y":61,"z":"d46b9957.2b9468","wires":[["f9476129.06b8a"]]},{"id":"f9476129.06b8a","type":"function","name":"","func":"delete msg._session;\nreturn msg;\n\n","outputs":1,"valid":true,"x":286,"y":61,"z":"d46b9957.2b9468","wires":[["bda54943.425ab8"]]},{"id":"bda54943.425ab8","type":"websocket out","name":"","server":"bc740d23.438bf","x":467,"y":61,"z":"d46b9957.2b9468","wires":[]},{"id":"df7af34a.20851","type":"http in","name":"","url":"/chat","method":"get","x":120,"y":129,"z":"d46b9957.2b9468","wires":[["969892ad.69677"]]},{"id":"969892ad.69677","type":"template","name":"","field":"","template":"<head>\n  <meta name=\"viewport\" content=\"width=320, initial-scale=1\">\n  <title>Chat</title>\n</head>\n\n<body>\n  <div id=\"wrapper\">\n    <div id=\"chat_box\" class=\"content\"></div>\n\n    <div id=\"footer\">\n      <div class=\"content\">\n        <input type=\"text\" id=\"user\" placeholder=\"Who are you?\" />\n        <input type=\"text\" id=\"message\" placeholder=\"What do you want to say?\" />\n        <input type=\"button\" id=\"send_btn\" value=\"Send\" onclick=\"sendMessage()\">\n      </div>\n    </div>\n  </div>\n</body>\n\n<script type=\"text/javascript\">\n  var wsUri = \"ws://{{req.headers.host}}/ws/chat\";\n  var ws = new WebSocket(wsUri);\n\n  function createSystemMessage(message) {\n    var message = document.createTextNode(message);\n\n    var messageBox = document.createElement('p');\n    messageBox.className = 'system';\n\n    messageBox.appendChild(message);\n\n    var chat = document.getElementById('chat_box');\n    chat.appendChild(messageBox);\n  }\n\n  function createUserMessage(user, message) {\n    var user = document.createTextNode(user + ': ');\n\n    var userBox = document.createElement('span');\n    userBox.className = 'username';\n    userBox.appendChild(user);\n\n    var message = document.createTextNode(message);\n\n    var messageBox = document.createElement('p');\n    messageBox.appendChild(userBox);\n    messageBox.appendChild(message);\n\n    var chat = document.getElementById('chat_box');\n    chat.appendChild(messageBox);\n  }\n\n  ws.onopen = function(ev) {\n    createSystemMessage('[Connected]');\n  };\n\n  ws.onclose = function(ev) {\n    createSystemMessage('[Disconnected]');\n  }\n\n  ws.onmessage = function(ev) {\n    var payload = JSON.parse(ev.data);\n    createUserMessage(payload.user, payload.message);\n\n    var chat = document.getElementById('chat_box');\n    chat.scrollTop = chat.scrollHeight;\n  }\n\n  function sendMessage() {\n    var user = document.getElementById('user');\n    var message = document.getElementById('message');\n\n    var payload = {\n      message: message.value,\n      user: user.value,\n      ts: (new Date()).getTime()\n    };\n\n    ws.send(JSON.stringify(payload));\n    message.value = \"\";\n  };\n</script>\n\n<style type=\"text/css\">\n  * {\n    font-family: \"Palatino Linotype\", \"Book Antiqua\", Palatino, serif;\n    font-style: italic;\n    font-size: 24px;\n  }\n\n  html, body, #wrapper {\n    margin: 0;\n    padding: 0;\n    height: 100%;\n  }\n\n  #wrapper {\n    background-color: #ecf0f1;\n  }\n\n  #chat_box {\n    box-sizing: border-box;\n    height: 100%;\n    overflow: auto;\n    padding-bottom: 50px;\n  }\n\n  #footer {\n    box-sizing: border-box;\n    position: fixed;\n    bottom: 0;\n    height: 50px;\n    width: 100%;\n    background-color: #2980b9;\n  }\n\n  #footer .content {\n    padding-top: 4px;\n    position: relative;\n  }\n\n  #user { width: 20%; }\n  #message { width: 68%; }\n  #send_btn {\n    width: 10%;\n    position: absolute;\n    right: 0;\n    bottom: 0;\n    margin: 0;\n  }\n\n  .content {\n    width: 70%;\n    margin: 0 auto;\n  }\n\n  input[type=\"text\"],\n  input[type=\"button\"] {\n    border: 0;\n    color: #fff;\n  }\n\n  input[type=\"text\"] {\n    background-color: #146EA8;\n    padding: 3px 10px;\n  }\n\n  input[type=\"button\"] {\n    background-color: #f39c12;\n    border-right: 2px solid #e67e22;\n    border-bottom: 2px solid #e67e22;\n    min-width: 70px;\n    display: inline-block;\n  }\n\n  input[type=\"button\"]:hover {\n    background-color: #e67e22;\n    border-right: 2px solid #f39c12;\n    border-bottom: 2px solid #f39c12;\n    cursor: pointer;\n  }\n\n  .system,\n  .username {\n    color: #aaa;\n    font-style: italic;\n    font-family: monospace;\n    font-size: 16px;\n  }\n\n  @media(max-width: 1000px) {\n    .content { width: 90%; }\n  }\n\n  @media(max-width: 780px) {\n    #footer { height: 91px; }\n    #chat_box { padding-bottom: 91px; }\n\n    #user { width: 100%; }\n    #message { width: 80%; }\n  }\n\n  @media(max-width: 400px) {\n    #footer { height: 135px; }\n    #chat_box { padding-bottom: 135px; }\n\n    #message { width: 100%; }\n    #send_btn {\n      position: relative;\n      margin-top: 3px;\n      width: 100%;\n    }\n  }\n</style>\n","x":286,"y":129,"z":"d46b9957.2b9468","wires":[["82cb0232.7d35"]]},{"id":"82cb0232.7d35","type":"http response","name":"","x":429,"y":129,"z":"d46b9957.2b9468","wires":[]}]

按照其他步骤导入上述流程，部署并运行应用程序。

于 2015-09-09T02:44:42.427 回答