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我之前在 C# 中解析过 JSON，但这次我将在 Node-Red 中使用 JavaScript。我在网上搜索并找到了几种使用 JavaScript 解析 JSON 的解决方案，但在所有示例中，JSON 都非常简单，并且其中没有太多“级别”的数据。

我将提供一小部分我需要解析的 JSON 文件

{
"programStatus": {
"modified_host_attributes": "1",
"modified_service_attributes": "1",
"serial_host_check_stats": "0,0,0"
},
"hosts": {
"FILANAS01": {
  "host_name": "FILANAS01",
  "modified_attributes": "0",
  "check_command": "check-host-alive",
  "current_state": "0",
  "scheduled_downtime_depth": "0"
},
"FILANAS02": {
  "host_name": "FILANAS02",
  "modified_attributes": "0",
  "check_command": "check-host-alive",
  "current_state": "0",
  "scheduled_downtime_depth": "0"
},
"FILANSW01": {
  "host_name": "FILANSW01",
  "modified_attributes": "0",
  "check_command": "check-host-alive",
  "scheduled_downtime_depth": "0"
},
"FILANSW02": {
  "host_name": "FILANSW02",
  "modified_attributes": "0",
  "check_command": "check-host-alive",
  "current_state": "0",
  "scheduled_downtime_depth": "0"
}
},
"services": {
"FILANSW01": {
"HP ProCurve Hardware Check": {
  "host_name": "FILANSW01",
  "current_state": "0",
  "scheduled_downtime_depth": "0"
},
"System Location": {
  "host_name": "FILANSW01",
  "current_state": "0",
  "scheduled_downtime_depth": "0"
}
},
"FILANSW02": {
"HP ProCurve Hardware Check": {
  "host_name": "FILANSW02",
  "current_state": "0",
  "scheduled_downtime_depth": "0"
},
"System Location": {
  "host_name": "FILANSW02",
  "current_state": "0",
  "scheduled_downtime_depth": "0"
}
},
"FILASDC02": {
"Active Directory Domain Services": {
  "host_name": "FILASDC02",
  "current_state": "0",
  "scheduled_downtime_depth": "0"
},
"CPU Load": {
  "host_name": "FILASDC02",
  "current_state": "0",
  "scheduled_downtime_depth": "0"
},
"DNS Server": {
  "host_name": "FILASDC02",
  "current_state": "0",
  "scheduled_downtime_depth": "0"
},
"Drive Space C:": {
  "host_name": "FILASDC02",
  "current_state": "0",
  "scheduled_downtime_depth": "0"
   }
  }
 }
}

这是从 Nagios 生成的，它包含服务器和交换机以及有关它们的信息。我需要遍历所有“主机”并查看“current_state”是什么，如果它是其他东西那么 0 那么我将从该“主机”获取“host_name”和一些其他信息。

“服务”中的相同内容检查当前状态，如果它不是 0。

然后，我将使用从该 JSON 中获取的信息创建一个数组，并将其显示在信息屏幕上。

但我需要一些帮助才能开始使用 JSON。谢谢。

4

1 回答 1

2 
 Assign the entire JSON in a JavaScript variable, complete code shown below:

`var myJSON = {“programStatus”：{“modified_host_attributes”：“1”，“modified_service_attributes”：“1”，“serial_host_check_stats”：“0,0,0”}，“hosts”：{“FILANAS01”：{“ host_name”：“FILANAS01”，“modified_attributes”：“0”，“check_command”：“check-host-alive”，“current_state”：“0”，“scheduled_downtime_depth”：“0”}，“FILANAS02”：{“host_name”：“FILANAS02”，“modified_attributes”：“0”，“check_command”：“check-host-alive”，“current_state”：“0”，“scheduled_downtime_depth”：“0”}，“FILANSW01”： {“host_name”：“FILANSW01”，“modified_attributes”：“0”，“check_command”：“check-host-alive”，“scheduled_downtime_depth”：“0”}，“FILANSW02”：{“host_name”：“FILANSW02”，“modified_attributes”：“0”，“check_command”：“check-host-alive”，“current_state”：“0”，“scheduled_downtime_depth”：“0”}}，“服务”：{“FILANSW01”： {“HP ProCurve 硬件检查”：{“host_name”：“FILANSW01”，“current_state”：“0”，“scheduled_downtime_depth”：“0”}，“系统位置”：{“host_name”：“FILANSW01”、“current_state”：“0”、“scheduled_downtime_depth”：“0”}}、“FILANSW02”：{“HP ProCurve 硬件检查”：{“host_name”：“FILANSW02”、“current_state”：“0” ，“scheduled_downtime_depth”：“0”}，“系统位置”：{“host_name”：“FILANSW02”，“current_state”：“0”，“scheduled_downtime_depth”：“0" } }, "FILASDC02": { "Active Directory 域服务": { "host_name": "FILASDC02", "current_state": "0", "scheduled_downtime_depth": "0" }, "CPU 负载": {"主机名”：“FILASDC02”，“current_state”：“0”，“scheduled_downtime_depth”：“0”}，“DNS 服务器”：{“主机名”：“FILASDC02”，“current_state”：“0”，“scheduled_downtime_depth”：“0”}，“驱动器空间 C：”：{“host_name”：“FILASDC02”，“current_state”：“0”，“scheduled_downtime_depth”：“0”}} } }“current_state”：“0”，“scheduled_downtime_depth”：“0”}}}}“current_state”：“0”，“scheduled_downtime_depth”：“0”}}}}

Now iterate through:

var host = Object.keys(myJSON["hosts"]);
for (var i = 0; i < host.length; i++) {
      var hostData = host[i];
      var hostProp = myJSON.hosts[hostData];
      if (hostProp.current_state != 0) {
           //Do your work.
      } 
}
I've tested Object.keys() in a few browsers like IE9, IE10, Chrome 46
and FireFox, it works but fails in IE8.
于 2015-10-15T18:42:19.483 回答