Flask是一个基于Python开发的微型web框架
使用Flask实现简单的 api
安装
pip install flask
flask版本
import flask
print(flask.__version__)
$ python test.py
1.1.2
eg:
from flask import Flask app = Flask(__name__) @app.route('/') def hello(): return 'hello,world' if __name__ == "__main__": app.run()
浏览器打开http://127.0.0.1:5000/
页面输出
hello,world
说明：
Flask自带的Server默认监听端口为5000
启用了 Flask 调试 模式
from flask import Flask app = Flask(__name__) @app.route('/') def hello(): return 'hello,world' if __name__ == "__main__": app.run(debug=True)
修改端口
from flask import Flask app = Flask(__name__) @app.route('/') def hello(): return 'hello,world' if __name__ == "__main__": app.run(debug=True,port=6000)
1.GET方法
参数形式 ?key=value
from flask import Flask,request,abort app = Flask(__name__) @app.route('/') def hello(): return 'hello,world' @app.route("/testGet", methods=['GET']) def testGet(): name = request.args.get('name','') age = request.args.get('age','') return {'name':name,'age':age} if __name__ == "__main__": app.run()
postman测试
使用 path 的形式
from flask import Flask,request,abort import os app = Flask(__name__) @app.route('/') def hello(): return 'hello,world' @app.route("/testGet/<name>", methods=['GET']) def testGet(name,age=20): return {'name':name,'age':age} if __name__ == "__main__": app.run(debug=True,port=5000)
使用postman测试
from flask import Flask,request,abort import os app = Flask(__name__) @app.route('/') def hello(): return 'hello,world' @app.route("/testGet/<name>/<age>", methods=['GET']) def testGet(name,age): return {'name':name,'age':age} if __name__ == "__main__": app.run(debug=True,port=6000)
2.POST方法
（1）接收json数据
from flask import Flask,request,abort app = Flask(__name__) @app.route('/') def hello(): return 'hello,world' @app.route("/testPost", methods=['POST']) def testPost(): if not request.json or not 'text' in request.json: abort(400) text = request.json.get('text', '') return {'text':text} if __name__ == "__main__": app.run()
postman测试
（2）formdata数据，request.form
from flask import Flask,request,abort app = Flask(__name__) @app.route('/') def hello(): return 'hello,world' @app.route('/testPost', methods=['POST']) def testPost(): text = request.form['text'] print(text) return {'text':text} if __name__ == "__main__": app.run(debug=True,port=5000)
eg：文件上传并保存
from flask import Flask,request,abort import os app = Flask(__name__) @app.route('/') def hello(): return 'hello,world' @app.route('/testPost', methods=['POST']) def testPost(): text = request.form['text'] message = '没有文件' success = False; if request.files: file = request.files['file'] if file: success = True filename = file.filename file.save(os.path.join(app.root_path, 'upload', filename)) message = '文件已保存'+os.path.join(app.root_path, 'upload', filename) print(text) return {'success':success,'text':text,'message':message} if __name__ == "__main__": app.run(debug=True,port=5000)
postman测试
原创文章，作者：ItWorker，如若转载，请注明出处：https://blog.ytso.com/20459.html