如何在所有级别重命名JSON嵌套对象中的键？

Question

{
  "ID": "5c9b2de495e8d81ef437539e",
  "WeightingFactor": "BIC",
  "TargetAmount": 1000,
  "FilterCondition": {
    "_cls": "ComplexFilter",
    "Condition": "AND",
    "Rules": [{
        "_cls": "Filter",
        "Field": "MOODYSFOREIGNCURRENCYCEILINGRATING",
        "Operator": "in list",
        "Value": "A1,A2,A3"
      },
      {
        "_cls": "Filter",
        "Field": "ASOFDATE",
        "Operator": "less or equal",
        "Value": "26 Nov 2028"
      },
      {
        "_cls": "ComplexFilter",
        "Condition": "OR",
        "Rules": [{
            "_cls": "Filter",
            "Field": "ASOFDATE",
            "Operator": "less or equal",
            "Value": "26 Nov 2028"
          },
          {
            "_cls": "Filter",
            "Field": "ASOFDATE",
            "Operator": "less or equal",
            "Value": "26 Nov 2029"
          }
        ]
      }
    ],
    "Not": false
  }
}

需要将"field"重命名为category everywhere。请建议如何使用任何可用的方法？

已尝试stringify和replace。但它不起作用

预期输出：

{
  "ID": "5c9b2de495e8d81ef437539e",
  "WeightingFactor": "BIC",
  "TargetAmount": 1000,
  "FilterCondition": {
    "_cls": "ComplexFilter",
    "Condition": "AND",
    "Rules": [{
        "_cls": "Filter",
        "Category": "MOODYSFOREIGNCURRENCYCEILINGRATING",
        "Operator": "in list",
        "Value": "A1,A2,A3"
      },
      {
        "_cls": "Filter",
        "Category": "ASOFDATE",
        "Operator": "less or equal",
        "Value": "26 Nov 2028"
      },
      {
        "_cls": "ComplexFilter",
        "Condition": "OR",
        "Rules": [{
            "_cls": "Filter",
            "Category": "ASOFDATE",
            "Operator": "less or equal",
            "Value": "26 Nov 2028"
          },
          {
            "_cls": "Filter",
            "Category": "ASOFDATE",
            "Operator": "less or equal",
            "Value": "26 Nov 2029"
          }
        ]
      }
    ],
    "Not": false
  }
}

Answer 1

您可以在给定的JSON字符串中将字符串"field":替换为"category":。

​

var json = JSON.stringify({ field: { field: 'foo' } }),
    newJSON = json.replace(/"field":/g, '"category":');

console.log(JSON.parse(newJSON));

​

经典的替代品

​

function replace(object, source, target) {
    return Object.assign(...Object.entries(object).map(([k, v]) => ({
        [k === source ? target : k]: v && typeof v === 'object'
            ? replace(v, source, target)
            : v
    })));
}

var object = { field: { field: 'foo' } },
    newObject = replace(object, 'field', 'category');

console.log(newObject);

​

Answer 2

我在Regex上运行了一个性能测试，替换一个键与深度遍历一个JSON对象，并替换一个键，结果发现Regex方法比深度遍历方法慢65%。

下面是以深度遍历的方式完成此操作的代码：

function deepTraverseAndReplace(o,sk,rk) {
    for (var key in o) {
        if (o[key ] !== null && typeof(o[key])=="object") {
            traverse(o[key],sk,rk);
        } else if( key == sk ) {
            o[rk] = o[key];
            delete(o[key]);
        }
    }
}



deepTraverseAndReplace(jsonObj,'Field','Category')

下面是create jsPerf的链接