JWT令牌解码SwiftUI

Question

我试图解码我的JWT令牌，并获得在我的视图中显示的信息。问题是，当我打印我的Jwt令牌时，我可以看到用户数据，但是当我从我的jwt令牌模型创建实例时，我无法获得数据，它没有显示anything.Where，我有错误的想法吗？

这个JWT令牌解码和模型

struct Token : Decodable {
    
    let jwtString : String = ApplicationVariables.token
    
    func getJwtToken(){
        do {
            
            let newJWT = try JWT<MyJWTClaims>(jwtString: jwtString)
            
            print("JWT TOKEN İS : \(newJWT.claims.data?.first_name)")
            
        } catch {
            
            print("ERROR!")
            
        }
    }
}

class MyJWTClaims : Claims,ObservableObject {
    
    @Published var data : JWTData?
    
}

class JWTData : ObservableObject,Codable {
    
    @Published var first_name : String?
    @Published var last_name : String?
    @Published var email : String?
    @Published var user_verified : Bool?
   
}

这就是我试图展示JwtToken数据的地方；

struct ProfileTopView : View {
    
    @ObservedObject var jwtTokenData = MyJWTClaims()
    
    var body: some View {
        
        ZStack{
            
            Image(uiImage: #imageLiteral(resourceName: "Rectangle 69"))
                .resizable()
                .frame(width: UIScreen.main.bounds.width * 1, height: UIScreen.main.bounds.height * 0.15, alignment: .center)
            
            Image(uiImage: #imageLiteral(resourceName: "Vector-8"))
                .resizable()
                .frame(width: UIScreen.main.bounds.width * 0.22, height: UIScreen.main.bounds.height * 0.10, alignment: .center)
                .offset(x: 0, y: UIScreen.main.bounds.height * 0.048)
            
            Text(jwtTokenData.data?.first_name ?? "Test")
                .font(.system(size: 14))
                .bold()
                .offset(x: 0, y: UIScreen.main.bounds.height * 0.14)
            
            
        }.ignoresSafeArea(.all)
    }
}

Answer 1

您应该返回使用解码的结果填充的实例。在下面的代码中，我将直接返回初始化对象，您必须像已经在做的那样首先解码，然后填充值。

import SwiftUI

protocol Token {
    func getJwtToken() -> JWTData
    var jwtString:String{get set}
}

class TokenDecoder : Token {
    var jwtString: String = "myToken"
    var jwtObj:JWTData?
    
    func getJwtToken() -> JWTData{
        // Perform JWTdecoding and return object
        JWTData(first_name:"foo",last_name:"bar",email:"abc@xyz.com",user_verified:false)
    }
}

class MyJWTClaims : ObservableObject {
    
    @Published var data : JWTData?
    
    init(decoder:Token) {
        self.data = decoder.getJwtToken()
    }
    
}

struct JWTData:Decodable  {
    
    var first_name : String?
    var last_name : String?
    var email : String?
    var user_verified : Bool?
    
}

struct ProfileTopView : View {
    
    @ObservedObject var jwtTokenData = MyJWTClaims(decoder: TokenDecoder())
    
    var body: some View {
        
        ZStack{
            
            Image("CDF")
                .resizable()
                .frame(width: UIScreen.main.bounds.width * 1, height: UIScreen.main.bounds.height * 0.15, alignment: .center)
            
            Image("Home")
                .resizable()
                .frame(width: UIScreen.main.bounds.width * 0.22, height: UIScreen.main.bounds.height * 0.10, alignment: .center)
                .offset(x: 0, y: UIScreen.main.bounds.height * 0.048)
            
            Text(jwtTokenData.data?.first_name ?? "Test")
                .font(.system(size: 14))
                .bold()
                .offset(x: 0, y: UIScreen.main.bounds.height * 0.14)
            
            
        }.ignoresSafeArea(.all)
    }
}