[英]Complex JSON-array
I have an Arduino Yun where I host a webpage. 我有一个Arduino Yun,我在其中托管一个网页。 Now I want to display the wifi signal quality on that page. 现在,我要在该页面上显示wifi信号质量。 I managed to dig in the system and I am able to pop up this JSON-like array 我设法在系统中进行挖掘,并且能够弹出这个类似于JSON的数组
{
"conncount": 5,
"leases": {
},
"wan": {
"proto": "dhcp",
"ipaddr": "192.168.0.13",
"link": "/cgi-bin/luci/;stok=235c7aba0f5cbf5cf752ad119ece74e6/admin/network/network/lan",
"netmask": "255.255.255.0",
"gwaddr": "192.168.0.1",
"expires": -1,
"uptime": 4407,
"ifname": "wlan0",
"dns": [
"192.168.0.1"
]
},
"membuffers": 15708,
"connmax": 16384,
"memfree": 1576,
"uptime": 4481,
"wifinets": [
{
"device": "radio0",
"networks": [
{
"ifname": "wlan0",
"encryption": "WPA2 PSK (CCMP)",
"bssid": "04:A1:51:D3:BC:E8",
"mode": "Client",
"quality": 70,
"noise": -95,
"ssid": "Skynet-ITA",
"link": "/cgi-bin/luci/;stok=235c7aba0f5cbf5cf752ad119ece74e6/admin/network/wireless/radio0.network1",
"assoclist": {
"04:A1:51:D3:BC:E8": {
"rx_short_gi": true,
"noise": -95,
"rx_mcs": 7,
"tx_40mhz": true,
"rx_40mhz": true,
"tx_rate": 135000,
"tx_packets": 14825,
"tx_short_gi": true,
"rx_packets": 101935,
"tx_mcs": 6,
"inactive": 360,
"rx_rate": 150000,
"signal": -61
}
},
"txpoweroff": 0,
"bitrate": 135,
"txpower": 16,
"name": "Client \u0022Skynet-ITA\u0022",
"channel": 6,
"country": "NL",
"signal": -61,
"up": true,
"frequency": "2.437"
}
],
"name": "Generic 802.11bgn Wireless Controller (radio0)",
"up": true
}
],
"memtotal": 61116,
"localtime": "Wed Feb 3 12:09:13 2016",
"memcached": 17596,
"loadavg": [
0.04052734375,
0.125,
0.20263671875
]
}
Unfortunately, this is the way it comes and I can't change it nor do I know how it is produced. 不幸的是,这就是它的实现方式,我无法更改它,也不知道它是如何产生的。
Is there a way to extract the bit that says "Quality": 70? 有没有一种方法可以提取“ Quality”(质量):70?
I tried it with the following code but no luck (it came back as undefined). 我用下面的代码尝试了一下,但是没有运气(它以未定义的形式出现)。 I used data[3] as it looks like multiple arrays and Quality is in the 4th one. 我使用了data [3],因为它看起来像多个数组,而Quality在第4个数组中。
var q;
$(document).ready(function() {
var refresh = setInterval(getData, 5000);
});
function getData() {
$.ajax({
type: "POST",
url: "/cgi-bin/luci/;stok=6ea83154346f9c42e99ac14ae8856b2b?status=1&_=0.16447926725451678",
dataType: "JSON",
cahce: "false",
success: function(data){
q = data[3].quality;
}
});
}
Try to parse it with a json parser (for instance http://json.parser.online.fr/ ) 尝试使用json解析器对其进行解析(例如http://json.parser.online.fr/ )
Then, you can follow the path for the quality: 然后,您可以遵循以下质量方针:
data.wifinets[0].networks[0].quality
try this 尝试这个
var quality=data['wifinets'][0]['networks'][0]['quality'];
alert(quality);
The simplest way that works for me is just pasting this json into Chrome developer console like: data = { "conncount": 5, ... }
. 对我来说,最简单的方法就是将json粘贴到Chrome开发者控制台中,例如: data = { "conncount": 5, ... }
。 Chrome presents objects in a readable form. Chrome浏览器以可读的形式显示对象。 You can work your way through it with expanding collapsed objects/arrays. 您可以通过扩展折叠的对象/数组来完成此工作。
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