# coding:utf-8
from flask import Flask, request

app = Flask(__name__)

@app.route(‘/index‘, methods=[‘GET‘, ‘POST‘])
def index():
    return ‘test ok‘

if __name__ == ‘__main__‘:
    app.run(host=‘0.0.0.0‘, debug=True)

# coding:utf-8
# request中包含了前端发送过来的所有请求数据
from flask import Flask, request

app = Flask(__name__)

@app.route(‘/index‘, methods=[‘GET‘, ‘POST‘])
def index():
    # 接收客户端请求过来的数据
    # 通过requset.form可以直接提取请求体中的表单格式的数据， 是一个类似字典的对象
    name = request.form.get(‘username‘)
    pwd = request.form.get(‘password‘)
    return ‘username = %s, password = %s‘ % (name, pwd)

if __name__ == ‘__main__‘:
    app.run(host=‘0.0.0.0‘, debug=True)

from flask import Flask, request

app = Flask(__name__)

@app.route(‘/index‘, methods=[‘GET‘, ‘POST‘])
def index():
    name = request.form[‘username‘]  # 注意这里为更改代码
    # name = request.form.get(‘username‘)
    pwd = request.form.get(‘password‘)
    return ‘username = %s, password = %s‘ % (name, pwd)

if __name__ == ‘__main__‘:
    app.run(host=‘0.0.0.0‘, debug=True)

from flask import Flask, request

app = Flask(__name__)

@app.route(‘/index‘, methods=[‘GET‘, ‘POST‘])
def index():
    # name = request.form[‘username‘]
    name = request.form.get(‘username‘)  # 这次是通过get()方法接受数据
    pwd = request.form.get(‘password‘)
    return ‘username = %s, password = %s‘ % (name, pwd)

if __name__ == ‘__main__‘:
    app.run(host=‘0.0.0.0‘, debug=True)

from flask import Flask, request

app = Flask(__name__)

@app.route(‘/index‘, methods=[‘GET‘, ‘POST‘])
def index():
    # 通过get方法只能拿到多个同名参数的第一个
    name = request.form.get(‘username‘)
    pwd = request.form.get(‘password‘)
    # 通过getlist() 可以获取多个
    name_list = request.form.getlist(‘username‘)
    return ‘username = %s, password = %s, username_list = %s‘ % (name, pwd, name_list)

if __name__ == ‘__main__‘:
    app.run(host=‘0.0.0.0‘, debug=True)

from flask import Flask, request
app = Flask(__name__)

@app.route(‘/index‘, methods=[‘GET‘, ‘POST‘])
def index():
    # 如果是请求体的数据不是表单格式的（如json格式），可以通过request.data获取
    json_data = request.data
    return ‘json_data = %s‘ % json_data

if __name__ == ‘__main__‘:
    app.run(host=‘0.0.0.0‘, debug=True)

from flask import Flask, request

app = Flask(__name__)

@app.route(‘/index‘, methods=[‘GET‘, ‘POST‘])
def index():
    # args是用来提取url中的参数（查询字符串）
    age = request.args.get(‘age‘)
    city = request.args.get(‘city‘)
    return ‘age : %s, city : %s‘ % (age, city)

if __name__ == ‘__main__‘:
    app.run(host=‘0.0.0.0‘, debug=True)

from flask import Flask, request

app = Flask(__name__)

@app.route(‘/‘, methods=[‘POST‘])
def upload():
    # 使用files属性来访问保存在内存中或者文件系统中一个临时的位置的这个上传文件
    file_obj = request.files.get(‘pic‘)
    # 使用save方法来保存刚刚获取的上传文件
    file_obj.save(‘/home/python/图片/upload.jpg‘)
    return ‘文件上传完毕‘

if __name__ == ‘__main__‘:
    app.run(host=‘0.0.0.0‘, debug=True)

# coding:utf-8
# request中包含了前端发送过来的所有请求数据
from flask import Flask, request
from werkzeug import secure_filename
import os

# 存储上传文件的路径
UPLOAD_FOLDER = ‘/home/python/图片/‘
# 允许的文件类型
ALLOWED_EXTENSIONS = set([‘txt‘, ‘pdf‘, ‘png‘, ‘jpg‘, ‘jpeg‘, ‘gif‘])

app = Flask(__name__)
# 将路径添加到配置中
app.config[‘UPLOAD_FOLDER‘] = UPLOAD_FOLDER


# 用来验证用户上传的文件是否是允许的
def allowed_file(filename):
    # 判断文件中是否有. and 用.只截取1次文件名得到的一个列表，选择列表第二个值看是否属于被允许的文件类型
    return ‘.‘ in filename and filename.rsplit(‘.‘, 1)[1] in ALLOWED_EXTENSIONS


@app.route(‘/‘, methods=[‘POST‘])
def upload():
    # 使用files属性来访问保存在内存中或者文件系统中一个临时的位置的这个上传文件
    file_obj = request.files.get(‘pic‘)
    # 判断用户是否上传了文件 和 文件是否是允许的类型
    if file_obj and allowed_file(file_obj.filename):
        filename = secure_filename(file_obj.filename)
        file_obj.save(os.path.join(UPLOAD_FOLDER, filename))
        return ‘文件上传完毕‘
    else:
        return ‘文件上传失败‘
    
    
if __name__ == ‘__main__‘:
    app.run(host=‘0.0.0.0‘, debug=True)