從json解碼html字串-有解無憂

我怎樣才能解碼這個字串

"<div id=\"readability-page-1\" class=\"page\">test<div>"

我從一個 api 接收這個物件，我想將它解碼成一個結構：

{
    "id": 5,
    "title": "iOS and iPadOS 14: The MacStories Review",
    "content": "<div id=\"readability-page-1\" class=\"page\">test<div>"
}

struct ArticleModel: Codable, Identifiable {
    let id: Int
    let title: String
    let content: String
}

但是這會引發錯誤

debugDescription : "The given data was not valid JSON."
    ? underlyingError : Optional<Error>
      - some : Error Domain=NSCocoaErrorDomain Code=3840 "Badly formed object around line 45, column 25." UserInfo={NSDebugDescription=Badly formed object around line 45, column 25., NSJSONSerializationErrorIndex=1437}

我怎樣才能轉義特殊字符“？

我想在視圖中將字串顯示為屬性字串。

通過操場測驗

import UIKit

let json = """
{
    "id": 5,
    "title": "iOS and iPadOS 14: The MacStories Review",
    "content": "<div id=\"readability-page-1\" class=\"page\">test<div>"
}

"""

struct ArticleModel: Codable, Identifiable {
    let id: Int
    let title: String
    let content: String
}

let jsonData = json.data(using: .utf8)!
let decoder = JSONDecoder()
decoder.keyDecodingStrategy = .convertFromSnakeCase
let article = try decoder.decode(ArticleModel.self, from: jsonData)
print(article)

uj5u.com熱心網友回復：

JSON 似乎不正確。"的值末尾似乎缺少一個"content":。

編輯：

你更新后，我又看了一遍。您需要在字串中轉義雙引號。奇怪的是，在這種情況下（當 JSON 在多行字串中時），您還需要轉義轉義字符（即\\）以正確解碼 JSON 并獲得可以使用的字串。

例子：

import UIKit

let json = """
{
    "id": 5,
    "title": "iOS and iPadOS 14: The MacStories Review",
    "content": "<div id=\\"readability-page-1\\" class=\\"page\\">test<div>"
}

"""

struct ArticleModel: Codable, Identifiable {
    let id: Int
    let title: String
    let content: String
}

let jsonData = json.data(using: .utf8)!
let article = try JSONDecoder().decode(ArticleModel.self, from: jsonData)
print(article) // ArticleModel(id: 5, title: "iOS and iPadOS 14: The MacStories Review", content: "<div id=\"readability-page-1\" class=\"page\">test<div>")

順便說一下，https://app.quicktype.io/是一個很好的工具，可以為你的 JSON 獲取解碼器（和編碼器）。

uj5u.com熱心網友回復：

您可以使用單引號使 json 看起來更好，它仍然是有效的 HTML

let realJson = "{\"id\": 5,\"title\": \"iOS and iPadOS 14: The MacStories Review\",\"content\": \"<div id='readability-page-1' class='page'>test<div>\"}"

func parseJson(for json: String?) -> ArticleModel? {
    guard let json = json, let jsonData = json.data(using: .utf8) else { return nil }
    let decoder = JSONDecoder()
    decoder.keyDecodingStrategy = .convertFromSnakeCase
    guard let article = try? decoder.decode(ArticleModel.self, from: jsonData) else { return nil }
    return article
}

let article = parseJson(for: realJson)
print(article?.id ?? 0)


struct ArticleModel: Codable, Identifiable {
    let id: Int
    let title: String
    let content: String
}

伊莫。對于更具可讀性的代碼，也許將 JSON 放在 .txt 檔案中并從那里讀取它會更好

干杯??

轉載請註明出處，本文鏈接：https://www.uj5u.com/gongcheng/388860.html

標籤：json 迅速结构解码

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