快速循环一个 JSON 响应

Question

This is a sample of my JSON response

{
   "dashboard_content":[
      {
         "Subject":"HELLO WORLD",
         "Date":"2022-01-10",
         "Name":"John Wick",
         "Message":"How are you?"
      },
      {
         "Subject":"HELLO you",
         "Date":"2022-05-10",
         "Name":"Sherlock Holmes",
         "Message":"Is this you?"
      }
   ]
}

How can I loop through the JSON Array/Dictionary and print Subject, Date, Name and Message each time?

Answer 1

A possible solution could look like this:

let jsonStr = """
{"dashboard_content":[{"Subject":"HELLO WORLD","Date":"2022-01-10","Name":"John Wick", "Message":"How are you?"},{"Subject":"HELLO you","Date":"2022-05-10","Name":"Sherlock Holmes", "Message":"Is this you?"}]}
"""

struct Response: Decodable {
    let dashboard_content: [Content]
    
    struct Content: Decodable {
        let Subject: String
        let Date: String
        let Name: String
        let Message: String
    }
}

if
    let jsonData = jsonStr.data(using: .utf8),
    let response = try? JSONDecoder().decode(Response.self, from: jsonData)
{
    response.dashboard_content.forEach { element in
        print(element.Subject, element.Date, element.Name, element.Message)
    }
}