如何在 Groovy 中将字符串作为属性传递。多级 JSON

Question

我真的很难在我正在处理的将字符串传递到多级 JSON 的代码中找出一些东西。我知道 groovy 会将 example ="multi.level "$example" 视为一个属性，我一直在尝试弄清楚如何拆分字符串保留分隔符，然后将其添加到 if 语句中，但没有任何成功。我有查看了其他解决方案，但无法让它们在我的情况下工作......任何帮助将不胜感激。

JSON：

scriptOutput: [
  {
    "id": 1,
    "data": {
      "name": "fyre-discard-vm-1007"
    },
    "key": "ABCDE123"
  },
  {
    "id": 2,
    "data": {
      "name": "fyre-discard-vm-1008"
    },
    "key": "ABCYRE123"
  },
  {
    "id": 3,
    "data": {
      "name": "fyre-discard-vm-1009"
    },
    "key": "AZREDE123"
  },
  {
    "id": 4,
    "data": {
      "name": "fyre-discard-vm-1010"
    },
    "key": "YTNER857"
  },
  {
    "id": 5,
    "data": {
      "name": "fyre-discard-vm-1011"
    },
    "key": "YANT76563A"
  },
  {
    "id": 6,
    "data": {
      "name": "fyre-discard-vm-1012"
    },
    "key": "DYAN31685"
  },
  {
    "id": 7,
    "data": {
      "name": "fyre-discard-vm-1013"
    },
    "key": "SANF84923"
  },
  {
    "id": 8,
    "data": {
      "name": "fyre-discard-vm-1014"
    },
    "key": "SADNS57985"
  },
  {
    "id": 9,
    "data": {
      "name": "fyre-discard-vm-1015"
    },
    "key": "DYUIK89OP"
  },
  {
    "id": 10,
    "data": {
      "name": "fyre-discard-vm-1016"
    },
    "key": "DHJMNNB6547"
  }
]

代码

#!/usr/local/bin/groovy
import groovy.json.*


def proc7 = "curl  https://my-json-server.typicode.com/owainow/privateAPI/machines".execute().text

def slaveList = ["fyre-discard-vm-1007","fyre-discard-vm-1015","fyre-discard-vm-1016"]
def deleteMap=[:]
def jsonName = "data.name"

    println "scriptOutput: ${proc7}"
 def json = new groovy.json.JsonSlurper().parseText(proc7)
  for (slave in slaveList)
{
  println(slave);
  if (json.find{it.data.name==slave}){ //This works as the properties are passed through as properties
  id = json.find{it.data.name==slave}.key
    deleteMap = deleteMap+[(slave):(id)]

// I would like to do something like this however I cannot figure out how to split my properties and pass them through in a way that works
/* if (json.find{it."$jsonName"==slave}){           SOMEHOW expand or split jsonName here
  id = json.find{it."$jsonName"==slave}.key
    deleteMap = deleteMap+[(slave):(id)] */

    println "Match"
    println (id)
    println deleteMap;
  }
  else{
    println"No"

  }

}

大家好。

Answer 1

你为什么需要这个？为什么 jsonName 应该是一个字符串？

问这个是因为从json 得到deleteMap 是非常简单的常规表达：

def deleteMap= json.findAll{ it.data.name in slaveList }.collectEntries{ [it.id, it.data.name]  }

但是，如果您仍然需要它 - groovy 支持动态表达式评估：

def jsonName = "ROOT.data.name"
def deleteMap= json.findAll{ Eval.me('ROOT', it, jsonName) in slaveList }.collectEntries{ [it.id, Eval.me('ROOT', it, jsonName)]  }

Answer 2

我打算建议使用 getAt() 运算符

it[jsonName]

但事实证明，您的代码中显然存在错误：

id = json.find{it."${jsonName}"==slave}.key

应该是

id = json.find{it.data."${jsonName}"==slave}.key

我仍然可能会使用

id = json.find{it.data[jsonName]==slave}.key

这是完整的、更正后的 sn-p：

import groovy.json.*


def proc7 = "curl  https://my-json-server.typicode.com/owainow/privateAPI/machines".execute().text

def slaveList = ["fyre-discard-vm-1007","fyre-discard-vm-1015","fyre-discard-vm-1016"]
def deleteMap=[:]

println "scriptOutput: ${proc7}"
def json = new groovy.json.JsonSlurper().parseText(proc7)
for (slave in slaveList)
{
    println(slave);
    if (json.find{it.data.name==slave}){ //This works as the properties are passed through as properties
        id = json.find{it.data.name==slave}.key
        deleteMap = deleteMap+[(slave):(id)]

// I would like to do something like this however I cannot figure out how to split my properties and pass them through in a way that works
/* if (json.find{it."$jsonName"==slave}){           SOMEHOW expand or split jsonName here
  id = json.find{it."$jsonName"==slave}.key
    deleteMap = deleteMap+[(slave):(id)] */

        def jsonName="name"

        id = json.find{it.data."${jsonName}"==slave}?.key
        if (id) {
            deleteMap = deleteMap+[(slave):(id)]

            println "Match"
            println (id)
            println deleteMap;
        }
    }
    else{
        println"No"

    }

}