我是Swift的新手，在使用Swift 3代码解析JSON时遇到了一些问题。
这是我的JSON(摘录(：
[
{
"COD_USUARIO":"4",
"0":"4",
"USUARIO":"PIEDAD",
"1":"PIEDAD",
"CLAVE":"MUu00d1OZ",
"2":"MUu00d1OZ",
"ACTIVO":"1",
"3":"1",
"FECHA_ALTA":"2010-12-07 00:00:00",
"4":"2010-12-07 00:00:00",
"FECHA_BAJA":null,
"5":null,
"CIF":null,
"6":null,
"TELEFONO_CASA":"",
"7":"",
"TELEFONO_MOVIL":"",
"8":"",
"EMAIL_TRABAJO":"",
"9":"",
"EMAIL_PARTICULAR":"",
"10":"",
"COLOR":"16777215",
"11":"16777215",
"ADMINISTRADOR":"0",
"12":"0",
"COD_PERSONA":"9",
"13":"9",
"IMPRESORA_ETIQUETAS":"",
"14":"",
"IMP_JUSTIFICANTES":"",
"15":"",
"VER_SESIONES":"0",
"16":"0",
"COD_EMPRESA":"0",
"17":"0",
"FECHA_TRABAJO":null,
"18":null,
"MEMORIZAR_FECHA":"0",
"19":"0",
"AVISOS_PAGOS":"0",
"20":"0",
"AVISOS_COBROS":"0",
"21":"0",
"AVISOS_DIAS":"0",
"22":"0",
"AVISOS_CONTRATOSC":"0",
"23":"0",
"24":"0"
}
]
这是我的代码(摘录(：
let url = URL(string : "http://192.168.0.252:6996/datos/policlinica/webservices/valida.php")
let session = URLSession.shared
let request = NSMutableURLRequest(url: url!)
request.httpMethod = "POST"
let paramToSend = "usu=" + user + "&pass=" + pwd
request.httpBody = paramToSend.data(using: String.Encoding.utf8)
let task = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) in
guard let _:Data = data else{
return
}
do {
let json = try JSONSerialization.jsonObject(with: data!, options: [])
print (json) //I can see my json in console
let cod_persona = json["COD_USUARIO"]
print (cod_persona)
//error: Type 'Any' has no subscript members
} catch {
print ("error")
return
}
})
task.resume()
我尝试过很多互联网的例子，但我无法读取特定的JSON数据。例如，我想读取"COD_USUARIO"字段并将数据保存在变量中，但我无法使其正常工作。
关于这个主题的任何建议或我做错了什么(肯定有很多事情(
我认为您的问题是json包含数组对象，所以我将其称为：
json[0]["COD_USUARIO"]
因为COD_USUARIO在json的第一个数组中。