Flask是一个基于Python的轻量级Web应用程序框架。
安装依赖库
pip install flask
pip install werkzeug上传接口
Python
from flask import Flask, request
from werkzeug.utils import secure_filenameapp = Flask(__name__)@app.route('/upload', methods=['POST'])
def upload_file():f = request.files['file']print(request.files)f.save("image/"+secure_filename(f.filename))return 'file uploaded successfully'if __name__ == '__main__':app.run(debug = True)Html调用示例
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Flask示例</title>
</head><body><form action = "http://localhost:5000/upload" method = "POST" enctype = "multipart/form-data"><input type = "file" name = "file" /><input type = "submit" value="提交"/></form></body>
</html>下载接口
Python
from flask import Flask, send_file
import osapp = Flask(__name__)base_path = '/upload/image/'@app.route('/download/<string:filename>')
def download(filename):file_path = os.path.join(base_path, filename)return send_file(file_path, as_attachment=True)if __name__ == "__main__":app.run(debug = True)图片查看接口
Python
from flask import Flask, request, make_response
import osapp = Flask(__name__)base_path = "/upload/image/"@app.route('/image/<string:filename>', methods=['GET'])
def show_photo(filename):if request.method == 'GET':if filename is None:passelse:image_data = open(os.path.join(upload_path, '%s' % filename), "rb").read()response = make_response(image_data)response.headers['Content-Type'] = 'image/jpeg'return responseelse:passif __name__ == '__main__':app.run(debug = True)Form表单请求接口
Python
from flask import Flask, requestapp = Flask(__name__)@app.route('/result',methods = ['POST'])
def result():result = request.formprint("name:", result["name"])print("code:", result["code"])return 'post form successfully'if __name__ == '__main__':app.run(debug = True)Html调用示例
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Flask示例</title>
</head><body><form action = "http://localhost:5000/result" method = "POST"><p>姓名 <input type = "text" name = "name" /></p><p>分数: <input type = "text" name = "code" /></p><p><input type = "submit" value = "提交" /></p></form></body>
</html>JSON请求接口
Python
from flask import Flask, requestapp = Flask(__name__)@app.route('/result',methods=['POST'])
def result():params = request.get_json()print(params)return paramsif __name__ == '__main__':app.run(debug = True)请求示例
curl -X POST -H 'Content-Type: application/json' -d '{"name":"abc","code":123}' http://127.0.0.1:5000/result加载模板
Python
from flask import Flask, render_templateapp = Flask(__name__)@app.route('/hello')
def hello():return render_template(‘hello.html’)@app.route('/hello/<user>')
def hello_name(user):return render_template('hello2.html', name = user)if __name__ == '__main__':app.run(debug = True)hello2.html
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Flask HTTP请求方法处理</title>
</head><body><h1>Hello {{ name }}!</h1></body>
</html>配置远程访问
app.run(host="0.0.0.0",port=5000)
# host （主机IP地址，可以不传）默认localhost
# port 端口号，可以不传，默认5000跨域支持
from flask import Flask,jsonify
from flask_cors import CORS"""
pip install flask flask-cors
"""app = Flask(__name__)
CORS(app)@app.route('/index', methods=['POST','GET'])
def index():return jsonify('Start!')if __name__ == "__main__":app.run(host="0.0.0.0",port=8000) NURBS曲线的绘制 matlab)
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