如何在嵌套元素的JSON数据中获取元素的外观？
[
{
"client":"172.16.109.96",
"check":
{
"command":"/var/lib/gems/1.9.1/gems/sensu-plugins-graphite-1.1.0/bin/check-graphite-stats.rb -h 172.16.109.96:8081 -t 'highestCurrent(scale(vcenter.*.*.*.*.cpu.usage_percent_average, 0.01), 5)' -w 1 -c 6 -p -6hours",
"standalone":true,
"interval":5,
"name":"vm_cpu_average",
"issued":1490774610,
"executed":1490774610,
"duration":0.142,
"output":"CheckGraphiteStat WARNING: No data from Graphite\n",
"status":3,
"type":"standard"
}
},
{
"client":"172.16.109.96",
"check":
{
"command":"/var/lib/gems/1.9.1/gems/sensu-plugins-graphite-1.1.0/bin/check-graphite-stats.rb -h 172.16.109.96:8081 -t 'collectd.*.*.system.memory.used.pct' -w 50 -c 75 -p -6hours",
"standalone":true,
"interval":5,
"name":"mem_average",
"issued":1490774614,
"executed":1490774614,
"duration":0.223,
"output":"CheckGraphiteStat CRITICAL: collectd.DEMO.172_16_109_100.system.memory.used.pct is 94.44555555555556 \n",
"status":2,
"type":"standard"
}
},
{
"client":"172.16.109.96",
"check":
{
"command":"/var/lib/gems/1.9.1/gems/sensu-plugins-graphite-1.1.0/bin/check-graphite-stats.rb -h 172.16.109.96:8081 -t 'scale(vcenter.*.*.*.*.mem.usage_percent_average, 0.01)' -w 50 -c 75 -p -6hours",
"standalone":true,
"interval":5,
"name":"vm_mem_average",
"issued":1490774614,
"executed":1490774614,
"duration":0.216,
"output":"CheckGraphiteStat WARNING: No data from Graphite\n",
"status":3,
"type":"standard"
}
},
{
"client":"172.16.109.96",
"check":
{
"command":"/var/lib/gems/1.9.1/gems/sensu-plugins-graphite-1.1.0/bin/check-graphite-stats.rb -h 172.16.109.96:8081 -t 'absolute(offset(collectd.*.*.system.cpu.idle.pct, -100))' -c 7 -p -6hours",
"standalone":true,
"interval":5,
"name":"cpu_average",
"issued":1490774613,
"executed":1490774613,
"duration":0.124,
"output":"CheckGraphiteStat CRITICAL: absolute(offset(collectd.DEMO.172_16_109_100.system.cpu.idle.pct,-100)) is 10.585147058823525 \n",
"status":2,
"type":"standard"
}
}
我需要计算WARNING和CRITICAL的出现次数，如果它出现在输出（检查 - ＆gt;输出）中。
请原谅这是否是一个新手问题。我是新手。
答案 0 :(得分：2)
你需要计算前端的回复吗？如果您愿意，可以使用正则表达式解析json。
var numMatches = (JSON.stringify(yourData).match(/(WARNING|CRITICAL)/g) || []).length;
这应该比在每个项目上迭代更快，并且分别在每个属性上运行单独的正则表达式。因此，如果您要在大型数据集上运行，我建议使用其他解决方案。
答案 1 :(得分：2)
您可以执行以下操作：
let critialCount = 0
let warningCount = 0
for(let i = 0; i < data.length; i++) {
if(data[i].check.output.indexOf('CRITICAL') > -1) {
critialCount++
}
else if(data[i].check.output.indexOf('WARNING') > -1) {
warningCount++
}
}
console.log('Critical count: ' + critialCount)
console.log('Warning count: ' + warningCount)
工作示例：
const data =[
{
"client": "172.16.109.96",
"check": {
"command": "/var/lib/gems/1.9.1/gems/sensu-plugins-graphite-1.1.0/bin/check-graphite-stats.rb -h 172.16.109.96:8081 -t 'highestCurrent(scale(vcenter.*.*.*.*.cpu.usage_percent_average, 0.01), 5)' -w 1 -c 6 -p -6hours",
"standalone": true,
"interval": 5,
"name": "vm_cpu_average",
"issued": 1490774610,
"executed": 1490774610,
"duration": 0.142,
"output": "CheckGraphiteStat WARNING: No data from Graphite\n",
"status": 3,
"type": "standard"
}
},
{
"client": "172.16.109.96",
"check": {
"command": "/var/lib/gems/1.9.1/gems/sensu-plugins-graphite-1.1.0/bin/check-graphite-stats.rb -h 172.16.109.96:8081 -t 'collectd.*.*.system.memory.used.pct' -w 50 -c 75 -p -6hours",
"standalone": true,
"interval": 5,
"name": "mem_average",
"issued": 1490774614,
"executed": 1490774614,
"duration": 0.223,
"output": "CheckGraphiteStat CRITICAL: collectd.DEMO.172_16_109_100.system.memory.used.pct is 94.44555555555556 \n",
"status": 2,
"type": "standard"
}
},
{
"client": "172.16.109.96",
"check": {
"command": "/var/lib/gems/1.9.1/gems/sensu-plugins-graphite-1.1.0/bin/check-graphite-stats.rb -h 172.16.109.96:8081 -t 'scale(vcenter.*.*.*.*.mem.usage_percent_average, 0.01)' -w 50 -c 75 -p -6hours",
"standalone": true,
"interval": 5,
"name": "vm_mem_average",
"issued": 1490774614,
"executed": 1490774614,
"duration": 0.216,
"output": "CheckGraphiteStat WARNING: No data from Graphite\n",
"status": 3,
"type": "standard"
}
},
{
"client": "172.16.109.96",
"check": {
"command": "/var/lib/gems/1.9.1/gems/sensu-plugins-graphite-1.1.0/bin/check-graphite-stats.rb -h 172.16.109.96:8081 -t 'absolute(offset(collectd.*.*.system.cpu.idle.pct, -100))' -c 7 -p -6hours",
"standalone": true,
"interval": 5,
"name": "cpu_average",
"issued": 1490774613,
"executed": 1490774613,
"duration": 0.124,
"output": "CheckGraphiteStat CRITICAL: absolute(offset(collectd.DEMO.172_16_109_100.system.cpu.idle.pct,-100)) is 10.585147058823525 \n",
"status": 2,
"type": "standard"
}
}
]
let critialCount = 0
let warningCount = 0
for(let i = 0; i < data.length; i++) {
if(data[i].check.output.indexOf('CRITICAL') > -1) {
critialCount++
}
else if(data[i].check.output.indexOf('WARNING') > -1) {
warningCount++
}
}
console.log('Critical count: ' + critialCount)
console.log('Warning count: ' + warningCount)
答案 2 :(得分：1)
您可以使用Array#forEach来迭代每个output条目，并查找warning或critical个关键字。
var json = [{client:"172.16.109.96",check:{command:"/var/lib/gems/1.9.1/gems/sensu-plugins-graphite-1.1.0/bin/check-graphite-stats.rb -h 172.16.109.96:8081 -t 'highestCurrent(scale(vcenter.*.*.*.*.cpu.usage_percent_average, 0.01), 5)' -w 1 -c 6 -p -6hours",standalone:!0,interval:5,name:"vm_cpu_average",issued:1490774610,executed:1490774610,duration:.142,output:"CheckGraphiteStat WARNING: No data from Graphite\n",status:3,type:"standard"}},{client:"172.16.109.96",check:{command:"/var/lib/gems/1.9.1/gems/sensu-plugins-graphite-1.1.0/bin/check-graphite-stats.rb -h 172.16.109.96:8081 -t 'collectd.*.*.system.memory.used.pct' -w 50 -c 75 -p -6hours",standalone:!0,interval:5,name:"mem_average",issued:1490774614,executed:1490774614,duration:.223,output:"CheckGraphiteStat CRITICAL: collectd.DEMO.172_16_109_100.system.memory.used.pct is 94.44555555555556 \n",status:2,type:"standard"}},{client:"172.16.109.96",check:{command:"/var/lib/gems/1.9.1/gems/sensu-plugins-graphite-1.1.0/bin/check-graphite-stats.rb -h 172.16.109.96:8081 -t 'scale(vcenter.*.*.*.*.mem.usage_percent_average, 0.01)' -w 50 -c 75 -p -6hours",standalone:!0,interval:5,name:"vm_mem_average",issued:1490774614,executed:1490774614,duration:.216,output:"CheckGraphiteStat WARNING: No data from Graphite\n",status:3,type:"standard"}},{client:"172.16.109.96",check:{command:"/var/lib/gems/1.9.1/gems/sensu-plugins-graphite-1.1.0/bin/check-graphite-stats.rb -h 172.16.109.96:8081 -t 'absolute(offset(collectd.*.*.system.cpu.idle.pct, -100))' -c 7 -p -6hours",standalone:!0,interval:5,name:"cpu_average",issued:1490774613,executed:1490774613,duration:.124,output:"CheckGraphiteStat CRITICAL: absolute(offset(collectd.DEMO.172_16_109_100.system.cpu.idle.pct,-100)) is 10.585147058823525 \n",status:2,type:"standard"}}],
obj = {};
json.forEach(function(v){
var elem = v.check.output.match(/critical|warning/i)[0];
!obj[elem] ? obj[elem] = 1 : obj[elem]++;
});
console.log(obj);
答案 3 :(得分：1)
您可以迭代数组并使用正则表达式检查所需的字符串。然后相应计算。
var data = [{ client: "172.16.109.96", check: { command: "/var/lib/gems/1.9.1/gems/sensu-plugins-graphite-1.1.0/bin/check-graphite-stats.rb -h 172.16.109.96:8081 -t 'highestCurrent(scale(vcenter.*.*.*.*.cpu.usage_percent_average, 0.01), 5)' -w 1 -c 6 -p -6hours", standalone: true, interval: 5, name: "vm_cpu_average", issued: 1490774610, executed: 1490774610, duration: 0.142, output: "CheckGraphiteStat WARNING: No data from Graphite\n", status: 3, type: "standard" } }, { client: "172.16.109.96", check: { command: "/var/lib/gems/1.9.1/gems/sensu-plugins-graphite-1.1.0/bin/check-graphite-stats.rb -h 172.16.109.96:8081 -t 'collectd.*.*.system.memory.used.pct' -w 50 -c 75 -p -6hours", standalone: true, interval: 5, name: "mem_average", issued: 1490774614, executed: 1490774614, duration: 0.223, output: "CheckGraphiteStat CRITICAL: collectd.DEMO.172_16_109_100.system.memory.used.pct is 94.44555555555556 \n", status: 2, type: "standard" } }, { client: "172.16.109.96", check: { command: "/var/lib/gems/1.9.1/gems/sensu-plugins-graphite-1.1.0/bin/check-graphite-stats.rb -h 172.16.109.96:8081 -t 'scale(vcenter.*.*.*.*.mem.usage_percent_average, 0.01)' -w 50 -c 75 -p -6hours", standalone: true, interval: 5, name: "vm_mem_average", issued: 1490774614, executed: 1490774614, duration: 0.216, output: "CheckGraphiteStat WARNING: No data from Graphite\n", status: 3, type: "standard" } }, { client: "172.16.109.96", check: { command: "/var/lib/gems/1.9.1/gems/sensu-plugins-graphite-1.1.0/bin/check-graphite-stats.rb -h 172.16.109.96:8081 -t 'absolute(offset(collectd.*.*.system.cpu.idle.pct, -100))' -c 7 -p -6hours", standalone: true, interval: 5, name: "cpu_average", issued: 1490774613, executed: 1490774613, duration: 0.124, output: "CheckGraphiteStat CRITICAL: absolute(offset(collectd.DEMO.172_16_109_100.system.cpu.idle.pct,-100)) is 10.585147058823525 \n", status: 2, type: "standard" } }],
count = {};
data.forEach(function (a) {
var match = a.check.output.match(/CRITICAL|WARNING/);
if (match) {
count[match[0]] = (count[match[0]] || 0) + 1;
}
});
console.log(count);