from flask import Flask, request

app = Flask(__name__)

@app.route('/')
def index():
    return "Welcome to Flask!"

# 处理GET请求
@app.route('/get_example', methods=['GET'])
def get_example():
    name = request.args.get('name', 'Guest')
    return f"Hello, {name}! This is a GET request."

# 处理POST请求
@app.route('/post_example', methods=['POST'])
def post_example():
    data = request.form.get('data', 'No data')
    return f"Received data: {data}"

# 同时处理GET和POST请求
@app.route('/both_example', methods=['GET', 'POST'])
def both_example():
    if request.method == 'POST':
        return "This is a POST request"
    return "This is a GET request"

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

@app.route('/json_example', methods=['POST'])
def json_example():
    if not request.is_json:
        return "Request is not JSON", 400
    
    data = request.get_json()
    return {"received_data": data}

@app.route('/example', methods=['GET', 'POST'])  # 添加所有需要的方法

# 对于表单数据
data = request.form.get('key')

# 对于JSON数据
data = request.get_json()

from flask_cors import CORS

app = Flask(__name__)
CORS(app)

from flask import Flask, request, redirect, url_for
from werkzeug.utils import secure_filename
import os

app = Flask(__name__)
app.config['UPLOAD_FOLDER'] = 'uploads/'

@app.route('/upload', methods=['GET', 'POST'])
def upload_file():
    if request.method == 'POST':
        if 'file' not in request.files:
            return 'No file part'
        file = request.files['file']
        if file.filename == '':
            return 'No selected file'
        if file:
            filename = secure_filename(file.filename)
            file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))
            return 'File uploaded successfully'
    return '''
    <form method="post" enctype="multipart/form-data">
      <input type="file" name="file">
      <input type="submit" value="Upload">
    </form>
    '''

from flask import Flask, jsonify, request

app = Flask(__name__)

tasks = [
    {
        'id': 1,
        'title': 'Learn Flask',
        'done': False
    },
    {
        'id': 2,
        'title': 'Develop API',
        'done': False
    }
]

@app.route('/api/tasks', methods=['GET'])
def get_tasks():
    return jsonify({'tasks': tasks})

@app.route('/api/tasks', methods=['POST'])
def create_task():
    if not request.json or not 'title' in request.json:
        return jsonify({'error': 'Bad request'}), 400
    
    task = {
        'id': tasks[-1]['id'] + 1,
        'title': request.json['title'],
        'done': False
    }
    tasks.append(task)
    return jsonify({'task': task}), 201