这段代码的核心,就是通过”app.jinja_env”来访问Jinja2的Environment对象,然后调用Environment对象的”get_template()”方法来获得模板对象,再调用模板对象的”stream()”方法生成一个”StreamTemplate”的对象。这个对象实现了”__next__()”方法,可以作为一个生成器使用,如果你看了Jinja2的源码,你会发现模板对象的...
Flask provides the stream_template() and stream_template_string() functions to make this easier to use. from flask import stream_template @app.get("/timeline") def timeline(): return stream_template("timeline.html") The parts yielded by the render stream tend to match statement blocks in ...
def render_large_template(): file = open('server.log') return Response(stream_template('stream-view.html',logs=file.readlines())) 1. 2. 3. 4. 上例的代码会将本地的”server.log”日志文件内容传入模板,并以流的方式渲染在页面上。 ”stream_with_context()”方法,它允许生成器在运行期间获取请...
This can be used for streaming HTML in chunks to speed up initial page load, or to save memory when rendering a very large template. The Jinja2 template engine supports rendering a template piece by piece, returning an iterator of strings. Flask provides the stream_template() and stream_...
如果是单节点转发流式请求,我们可以通过 flask 的 stream_with_context 实现:12345678910111213141516171819 from flask import ( Flask, Response, stream_with_context )import requestsapp = Flask(__name__)@app.route("/download/<file_path>", method=["GET"])def (file_path): url_prefix = "http:/...
The trick here is to get the template object from the Jinja2 environment on the application and to callstream()instead ofrender()which returns a stream object instead of a string. Since we’re bypassing the Flask template render functions and using the template object itself we have to make ...
Flask是一种轻量级的Python Web框架,它允许开发人员快速构建Web应用程序。Flask中的流(Stream)指的是在客户端请求被处理完毕之后再返回响应给客户端的方式。 Flask流的实现是通过将响应数据分块(chunk)传输给客户端的方式。这种方式可以提供更好的用户体验,特别适用于处理大文件下载、实时数据推送等需要较长时间的响应...
当请求数据转换string时,使用data是最好的方式,这个stream只返回数据一次 headers 请求头,dict类型 files 通过POST或者PUT请求上传的文件 environ WSGI隐含的环境配置 method 请求方式 remote_addr 远程IP user-agent 提供反扒和恶意攻击 文件上传 增加文件类型限制,文件大小限制 ...
Add stream_template and stream_template_string functions to render a template as a stream of pieces. :pr:`4629` A new implementation of context preservation during debugging and testing. :pr:`4666` request, g, and other context-locals point to the correct data when running code in the inter...
def validate_image(stream): header = stream.read(512) stream.seek(0) format = imghdr.what(None, header) if not format: return None return '.' + (format if format != 'jpeg' else 'jpg') @app.route('/') def index(): return render_template('index.html') ...