Question

这是我的主页功能：

class Home(webapp2.RequestHandler):
    def get(self): 
        self.response.headers.add_header('Access-Control-Allow-Origin', '*')
        self.response.headers.add_header('Access-Control-Allow-Headers', 'Authorization')
        self.response.headers.add_header('Access-Control-Allow-Methods', 'POST, GET, PUT, DELETE')
        homepage = the_jinja_env.get_template('/template/mosaic.html')  
        self.response.write(homepage.render({"data":getData()}))

app.yaml

- url: .*
  script: main.app

这是我得到的错误：

Access to image at 'https://storage.googleapis.com/mosaictestlayer1/1' from origin 'http://fortest099.appspot.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

如果可以帮助我更多，请访问以下网站：http://fortest099.appspot.com/

Answer 1

在App Engine响应上启用CORS的正确方法是在app.yaml中的“ handlers”元素下定义标头。请参见docs示例：

handlers:
- url: /images
  static_dir: static/images
  http_headers:
    Access-Control-Allow-Origin: http://mygame.appspot.com

如果您要从Cloud Storage XML API检索图像，则必须enable CORS at the bucket level。

添加self.response.headers ['Access-Control-Allow-Origin'] ='*'不会执行任何操作。 webapp2

1 个答案: