小编Jan*_*neš的帖子

我从Socket创建AudioInputStream时遇到问题.以下是重要部分:

public class SoundStream extends Thread {
    private int port;
    private String IP;
    private Socket socket;

    private SoundObject soundObject;

    private OpenAL openAL;
    private Source source;

    private boolean run = true;

    public SoundStream(int port, String IP, SoundObject soundObject) {
        this.soundObject = soundObject;
        this.port = port;
        this.IP = IP;
    }

    public void run() {
        try {
            this.socket = new Socket(this.IP, this.port);
            this.openAL = new OpenAL();
        } catch (Exception e) {
            e.printStackTrace();
        }
        this.mainCycleMethod();
    }

    private void mainCycleMethod() {
        while (run) {
            this.soundObject.blockAndWait(); …

我有一个联系人列表,每个联系人都有一张存储在Firebase存储中的个人资料照片.获取图像的官方方法是使用Firebase存储SDK获取URL并将其设置为img元素中的src.

            firebaseApp.storage().ref("profilePhotos/" + officeId + ".jpg").getDownloadURL().then(function (url) {
                this.photoUrl = url;
            }.bind(this)).catch(function (error) {
                console.log("Photo error"); // TODO: handler
            });

当我必须加载多个文件时(例如在联系人列表中),这非常麻烦.上面收到的文件URL是静态的吗？我可以将它存储在配置文件信息中的数据库中并直接使用吗？

谢谢

我在Firebase托管上托管单页应用,我需要允许跨域请求到应用引擎.应用程序托管在project-id.firebaseapp.com上,app-引擎服务托管在project-id.appspot.com上.我重新部署了部署文档,没有示例如何为URL添加Access-Control-Allow-Origin标头.

这是我的firebase.json的样子:

{
  "database": {
    "rules": "database.rules.json"
  },
  "hosting": {
    "public": "public",
    "redirects": [
      {
        "source": "/server/:rest*",
        "destination": "https://app-id.appspot.com/:rest*",
        "type": 301
      }
    ],
    "rewrites": [
      {
        "source": "/views/**",
        "destination": "/views/**"
      },
      {
        "source": "**",
        "destination": "/index.html"
      }
    ],
    "headers": [ {
      "source" : "https://app-id.appspot.com/registration/generate",
      "headers" : [ {
        "key" : "Access-Control-Allow-Origin",
        "value" : "*"
      } ]
    } ]
  }
}

我试图使用gsutils设置CORS,但它也没有帮助:

这是我的cors.json

[
    {
        "maxAgeSeconds": 3600, 
        "method": ["GET", "POST"], 
        "origin": ["https://project-id.appspot.com/"]
    }
]

提前致谢

解:

如果您只想在静态文件上允许CORS,那么在app.yaml中设置Access-Control-Allow-Origin标头就足够了.对于动态请求,此标头不允许在app.yaml中,因此您必须以编程方式添加它. …