如何解析"；MongoDB日期时间（ISO日期）“；截至iOS日期（swift和OBJECT-c）

如何在iOS上将“MongoDB日期时间（ISO日期）”解析为NSDate（swift和objective-c）

这是json结果：

{
    "mongodate" : "2015-06-11T14:16:56.643Z"
}

我也回答了这个问题。

Swift

  func stringToDate(date:String) -> NSDate {
  let formatter = NSDateFormatter()

  // Format 1
  formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
  if let parsedDate = formatter.dateFromString(date) {
    return parsedDate
  }

  // Format 2
  formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:SSSZ"
  if let parsedDate = formatter.dateFromString(date) {
    return parsedDate
  }

  // Couldn't parsed with any format. Just get the date
  let splitedDate = date.componentsSeparatedByString("T")
  if splitedDate.count > 0 {
    formatter.dateFormat = "yyyy-MM-dd"
    if let parsedDate = formatter.dateFromString(splitedDate[0]) {
      return parsedDate
    }
  }

  // Nothing worked!
  return NSDate().toLocalTime()
}

目标-C

NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss.SSSZ"];
NSDate *date = [dateFormat dateFromString:@"2015-06-11T14:16:56.643Z"];

格式：

---

Swift 3更新@fatihyildizhan的答案：

func stringToDate(date: String) -> Date {
    let formatter = DateFormatter()

    // Format 1
    formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
    if let parsedDate = formatter.date(from: date) {
        return parsedDate
    }

    // Format 2
    formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:SSSZ"
    if let parsedDate = formatter.date(from: date) {
        return parsedDate
    }

    // Couldn't parsed with any format. Just get the date
    let splitedDate = date.components(separatedBy: "T")
    if splitedDate.count > 0 {
        formatter.dateFormat = "yyyy-MM-dd"
        if let parsedDate = formatter.date(from: splitedDate[0]) {
            return parsedDate
        }
    }

    // Nothing worked!
    return Date()
}

---

从iOS 10+开始，现在有一个

ISO8601数据格式化程序

然而。。。它不处理有时从MongoDB日期字符串获得的十进制秒数，下面是一个简单的解决方法：

func stringToDate(date: String) -> Date {
    let formatter = DateFormatter()

    // Format 1
    formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
    if let parsedDate = formatter.date(from: date) {
        return parsedDate
    }

    // Format 2
    formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:SSSZ"
    if let parsedDate = formatter.date(from: date) {
        return parsedDate
    }

    // Couldn't parsed with any format. Just get the date
    let splitedDate = date.components(separatedBy: "T")
    if splitedDate.count > 0 {
        formatter.dateFormat = "yyyy-MM-dd"
        if let parsedDate = formatter.date(from: splitedDate[0]) {
            return parsedDate
        }
    }

    // Nothing worked!
    return Date()
}