Swift 问题 2 错误处理

Issue with Swift 2 Error Handling

我正在使用 REST 获取 JSON 数据,然后对其进行解析。为此,我使用 NSJSONObjectWithData,据我所知,此方法过去在其参数中有一个错误处理程序,但现在已不存在。在我的代码中:

let err: NSError?
let options:NSJSONReadingOptions = NSJSONReadingOptions.MutableContainers
var jsonResult = NSJSONSerialization.JSONObjectWithData(data!, options: options) as! NSDictionary;

我收到一条错误消息:

"Call can throw, but it is not marked with 'try' and the error is not handled"

我该如何解决这个错误?

这是正确的实现,

do {
    let jsonDictionary = try NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableContainers) as! NSDictionary

    //Use your dictionary here.
    print("JSON : \(jsonDictionary)")
}
catch  {
    print(error)
    //Handle any error.
}