request请求与响用

一、request请求与响用

from flask import Flask, request, make_response, render_template

app = Flask(__name__)


@app.route('/login.html', methods=['GET', "POST"])
def login():
     # 请求相关信息
    # request.method  提交的方法,请求方式
    print(request.method)  # GET

    # request.args  get请求提及的数据
    print(request.args)  # ImmutableMultiDict([('age', '123')])
    print(request.args.get("age"))  # 123
	
    # request.form   post请求提交的数据,获取表单的数据
    print(request.form)

    # request.values  post和get提交的数据总和
    print(request.values)    
    
    # request.cookies  客户端所带的cookie
    print(request.cookies)
    
    # request.headers  请求头
    print(request.headers) # 获取请求头User-Agent:设置爬虫拦截
    
    # request.path     不带域名，获取请求路径
    print(request.path)  # /login.html
    
    # request.full_path  不带域名，带参数的请求路径
    print(request.script_root) # 127.0.0.1 - - [16/Dec/2019 16:53:10] "GET /login.html?age=123 HTTP/1.1" 200 -
    
     # request.url           带域名带参数的请求路径
     print(request.base_url)  # 带域名请求路径 # http://127.0.0.1:5000/login.html
    
     # 域名
    print(request.url_root)  # 获取域名 http://127.0.0.1:5000/
    
    print(request.host_url)#    域名 http://127.0.0.1:5000/
    
    # 获取域名ip
    print(request.host)  # 域名ip 127.0.0.1:500
    
    # 获取前台传过来的文件
     # 获取文件
    print(request.files)
    # 获取文件对象
    obj = request.files['the_file_name']
    # 保存文件
    obj.save('/var/www/uploads/' + secure_filename(f.filename))
    
    
    # 响应相关信息
    return "字符串" # 响用字符串
    return render_template('html模板路径',**{} )  # 响应html页面，和模板语法使用
    return redirect('/index.html') # 重定向
    return jsonify({'k1':'v1'}) # json字符串

	# 使用response操作cookies
    response = make_response(render_template('index.html')) # 响应对象
    # response是flask.wrappers.Response类型
    response.delete_cookie('key') # 删除cookie
    response.set_cookie('key', 'value') # 设置cookie
    response.headers['X-Something'] = 'A value'  # 设置响应头
    return response # 返回对象

	# 返回字符串, 导入make_response模块
    response = make_response("内容")
    response.set_cookie("json","piao") # 设置cookie
    response.delete_cookie('json') # 删除cookie
    return response

	# 返回html
    response = make_response(render_template("index.html"))
    response.headers['X-Something'] = 'sb'
    return response