node.js - 如何在 Angular 中将字符串转换为 json？

Question

从以下类型的字符串开始:

const json = '{"list":"[{"additionalInformation": {"source": "5f645d7d94-c6ktd"}, "alarmName": "data", "description": "Validation Error. Fetching info has been skipped.", "eventTime": "2020-01-27T14:42:44.143200 UTC", "expires": 2784, "faultyResource": "Data", "name": "prisco", "severity": "Major"}]"}'

如何将其作为 JSON 进行管理？以下方法不起作用

const obj = JSON.parse(json );
unuspected result

如何正确解析它？

总之，我应该提取与第一项列表相关的部分，然后解析它包含的 JSON。

Answer 1

您的 JSON 无效。以下是 JSON 的有效版本:

const json= {
    "list": [ {
        "additionalInformation": {
            "source": "5f645d7d94-c6ktd"
        },
        "alarmName": "data",
        "description": "Validation Error. Fetching info has been skipped.",
        "eventTime": "2020-01-27T14:42:44.143200 UTC",
        "expires": 2784,
        "faultyResource": "Data",
        "name": "prisco",
        "severity": "Major"
      }
    ]
}

上面已经是一个 JSON，再次将其解析为 JSON 会抛出错误。

JSON.parse() 解析字符串/文本并将其转换为 JavaScript 对象。字符串/文本应采用 JSON 格式，否则会引发错误。

更新:创建一个函数来清理字符串并为 JSON.parse() 做好准备:

cleanString(str) {
    str = str.replace('"[', '[');
    str = str.replace(']"', ']');
  return str;
}

并像这样使用它:

json = this.cleanString(json);
console.log(JSON.parse(json));

演示:

let json = '{"list":"[{"additionalInformation": {"source": "5f645d7d94-c6ktd"}, "alarmName": "data", "description": "Validation Error. Fetching info has been skipped.", "eventTime": "2020-01-27T14:42:44.143200 UTC", "expires": 2784, "faultyResource": "Data", "name": "prisco", "severity": "Major"}]"}';
json = cleanString(json);
console.log(JSON.parse(json));

function cleanString(str) {
	str = str.replace('"[', '[');
	str = str.replace(']"', ']');
  return str;
}