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javascript - JSON.parse(myArray) 失败

问题描述

我有一个 API 调用，它以以下格式返回数据：

[
  {
    "children": null,
    "entityDefinition": {
      "id": 0,
      "version": 0,
      "entityType": "APPLICATION_COMPONENT_NODE",
      "entityId": 8280,
      "prettyToString": null
    },
    "state": "NORMAL",
    "nodesPerformanceStateSummary": null,
    "appServerAgentAvailability": {
      "entityId": 8280,
      "entityType": "APPLICATION_COMPONENT_NODE",
      "latest": true,
      "percentage": 100,
      "metricId": 41540
    },
    "machineAgentAvailability": {
      "entityId": 8280,
      "entityType": "APPLICATION_COMPONENT_NODE",
      "latest": true,
      "percentage": 100,
      "metricId": 41548
    }
  }
],
[
  {
    "children": null,
    "entityDefinition": {
      "id": 0,
      "version": 0,
      "entityType": "APPLICATION_COMPONENT_NODE",
      "entityId": 20552,
      "prettyToString": null
    },
    "state": "NORMAL",
    "nodesPerformanceStateSummary": null,
    "appServerAgentAvailability": {
      "entityId": 20552,
      "entityType": "APPLICATION_COMPONENT_NODE",
      "latest": false,
      "percentage": 0,
      "metricId": 41540
    },
    "machineAgentAvailability": {
      "entityId": 20552,
      "entityType": "APPLICATION_COMPONENT_NODE",
      "latest": true,
      "percentage": 100,
      "metricId": 41548
    }
  }
]

当我尝试执行

JSON.parse(myData).forEach(function(node){
    sails.log.info(node.id);
}

它给了我以下错误：

SyntaxError: Unexpected token , in JSON at position 468
    at JSON.parse (<anonymous>)
    at getListOfAvailableNodes (C:\Users\taaniel.paal\Documents\license-statistics\api\helpers\get-licenses.js:73:14)
    at Request._callback (C:\Users\taaniel.paal\Documents\license-statistics\api\helpers\get-licenses.js:136:30)
    at Request.self.callback (C:\Users\taaniel.paal\Documents\license-statistics\node_modules\request\request.js:185:22)
    at Request.emit (events.js:182:13)
    at Request.EventEmitter.emit (domain.js:442:20)
    at Request.<anonymous> (C:\Users\taaniel.paal\Documents\license-statistics\node_modules\request\request.js:1161:10)
    at Request.emit (events.js:182:13)
    at Request.EventEmitter.emit (domain.js:442:20)
    at IncomingMessage.<anonymous> (C:\Users\taaniel.paal\Documents\license-statistics\node_modules\request\request.js:1083:12)
    at Object.onceWrapper (events.js:273:13)
    at IncomingMessage.emit (events.js:187:15)
    at IncomingMessage.EventEmitter.emit (domain.js:442:20)
    at endReadableNT (_stream_readable.js:1090:12)
    at process._tickCallback (internal/process/next_tick.js:63:19)

这适用于数组只有一个元素但有更多元素时，它会失败。有人可能知道解决方法吗？我的意思是， JSON.parse() 应该识别数组类型的数据，或者是没有包含该数组的根元素的问题，例如 { "nodes": ["x", "x", "x"] } ? 我有点困惑，希望从更聪明的人那里得到一些见解:)

提前致谢。

标签： javascriptarraysjsonparsing

解决方案

这是无效的 JSON，您有两个根数组元素。服务器响应必须是固定的。目前您的情况与此类似：

[
"first"
],
[
"second"
]

应该：

["first", "second"]

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