Play Framework Java访问公共资产没有方法＆＃34; at＆＃34;

Question

我正在尝试尝试以下我找到here的解决方案：

controllers.routes.Assets.at("images/unchecked.png").absoluteURL(request())

但是我收到以下错误：

cannot find symbol
  symbol:   method at(java.lang.String)
  location: variable Assets of type controllers.ReverseAssets

看起来它无法找到我认为内置的at方法。有什么想法吗？

Answer 1

这是因为您在路由器中没有使用“at”，因此它不是由Play生成的。

我想你使用版本化的

GET     /assets/*file               controllers.Assets.at(path="/public", file)

将其更改为“routes”文件中的“at”，然后重建项目

GET     /assets/*file               controllers.Assets.versioned(path="/public", file: Asset)

修改

如果您想在路线中使用版本（更好和推荐的方式），您需要采用一些“特殊”方式。 Play（2.3和2.4）在Java中存在问题（Scala版本是正确的）因此不存在Assets.versioned（String file）版本，只有Assets.versioned（资产资产）可用。所以有“特殊”的方式：

“路线”文件：

public Result index() {
    ...
    controllers.routes.Assets.versioned(toAsset("images/unchecked.png")).absoluteURL(request())
    ...    
}

public static controllers.Assets.Asset toAsset(String name) {
  return new controllers.Assets.Asset(name);
}

控制器：

var player: AVQueuePlayer! = nil

override func viewDidLoad()
{
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
}

override func viewDidAppear(animated: Bool)
{
    super.viewDidAppear(true)

    var song = AVPlayerItem(URL: NSBundle.mainBundle().URLForResource("AlmostAYearAgo", withExtension: "mp3")!)
    player = AVQueuePlayer(items: [song])

    let theSession = AVAudioSession.sharedInstance()

    NSNotificationCenter.defaultCenter().addObserver(self, selector: "playInterrupt:", name: AVAudioSessionInterruptionNotification, object: theSession)

    player.play()
}

override func didReceiveMemoryWarning()
{
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

func playInterrupt(notification: NSNotification)
{
    if notification.name == AVAudioSessionInterruptionNotification && notification.userInfo != nil
    {
        var info = notification.userInfo!
        var intValue: UInt = 0

        (info[AVAudioSessionInterruptionTypeKey] as! NSValue).getValue(&intValue)

        if let type = AVAudioSessionInterruptionType(rawValue: intValue)
        {
            switch type
            {
            case .Began:
                print("aaaaarrrrgggg you stole me")
                player.pause()
            case .Ended:
                let timer = NSTimer.scheduledTimerWithTimeInterval(3, target: self, selector: "resumeNow:", userInfo: nil, repeats: false)
            }
        }
    }
}

func resumeNow(timer : NSTimer)
{
    player.play()
    print("attempted restart")
}

在Play 2.3.3 Bugs

中查找“问题3”