flask中获取各种请求数据的常见方法小结

from flask import Flask, request

app = Flask(__name__)

@app.route('/get_params')
def get_params():
    # 获取单个参数
    name = request.args.get('name')
    age = request.args.get('age', type=int)  # 指定参数类型

    # 获取所有参数
    all_params = request.args.to_dict()

    return f"Name: {name}, Age: {age}, All params: {all_params}"

if __name__ == '__main__':
    app.run(debug=True)

from flask import Flask, request

app = Flask(__name__)

@app.route('/submit_form', methods=['POST'])
def submit_form():
    # 获取单个表单字段
    username = request.form.get('username')
    password = request.form.get('password')

    # 获取所有表单字段
    all_form_data = request.form.to_dict()

    return f"Username: {username}, Password: {password}, All form data: {all_form_data}"

if __name__ == '__main__':
    app.run(debug=True)

from flask import Flask, request

app = Flask(__name__)

@app.route('/submit_json', methods=['POST'])
def submit_json():
    # 获取 JSON 数据
    data = request.get_json()

    if data:
        name = data.get('name')
        age = data.get('age')
        return f"Name: {name}, Age: {age}"
    else:
        return "No valid JSON data provided", 400

if __name__ == '__main__':
    app.run(debug=True)

from flask import Flask, request

app = Flask(__name__)

@app.route('/get_headers')
def get_headers():
    # 获取单个请求头
    user_agent = request.headers.get('User-Agent')

    # 获取所有请求头
    all_headers = dict(request.headers)

    return f"User-Agent: {user_agent}, All headers: {all_headers}"

if __name__ == '__main__':
    app.run(debug=True)

from flask import Flask, request

app = Flask(__name__)

@app.route('/upload_file', methods=['POST'])
def upload_file():
    # 获取上传的文件
    file = request.files.get('file')

    if file:
        # 保存文件
        file.save('uploaded_file.txt')
        return "File uploaded successfully"
    else:
        return "No file provided", 400

if __name__ == '__main__':
    app.run(debug=True)

from flask import Flask, request

app = Flask(__name__)

@app.route('/mixed_data', methods=['GET', 'POST'])
def mixed_data():
    param1 = request.values.get('param1')
    param2 = request.values.get('param2')
    return f"Param1: {param1}, Param2: {param2}"

if __name__ == '__main__':
    app.run(debug=True)