Python：werkzeug 库高级用法举例和应用详解

from werkzeug.wrappers import Request, Response  # 从werkzeug导入Request和Response类

def application(environ, start_response):  # 定义WSGI应用
    request = Request(environ)  # 用environ对象创建Request实例
    response = Response('Hello World')  # 创建一个响应，内容为‘Hello World’
    
    return response(environ, start_response)  # 返回响应结果

from werkzeug.routing import Map, Rule, NotFound  # 导入路由相关功能

url_map = Map([
    Rule('/', endpoint='home'),  # 定义根路由
    Rule('/about', endpoint='about'),  # 定义关于页面路由
])

def application(environ, start_response):
    path_info = environ.get('PATH_INFO', '/')  # 获取请求的路径
    adapter = url_map.bind('/')  # 绑定url_map
    try:
        endpoint, values = adapter.match(path_info)  # 匹配路径
        response = Response(f'You are at {endpoint}')  # 生成响应
    except NotFound:
        response = Response('Page Not Found', status=404)  # 页面未找到响应
    
    return response(environ, start_response)  # 返回响应结果

from werkzeug.wrappers import Request, Response  # 导入请求和响应类
from werkzeug.utils import secure_filename  # 导入安全文件名功能

def application(environ, start_response):
    request = Request(environ)  # 创建request实例
    if request.method == 'POST':  # 检查请求方法
        file = request.files['file']  # 从表单中获取文件
        filename = secure_filename(file.filename)  # 安全处理文件名
        file.save(f'/uploads/{filename}')  # 保存文件
        response = Response('File uploaded successfully')  # 成功响应
    else:
        response = Response('Please upload a file.', status=400)  # 错误响应
    
    return response(environ, start_response)  # 返回最终响应