python之restful api（flask）获取数据

需要用到谷歌浏览器的扩展程序 Advanced Rest Client进行模拟请求

1.直接上代码

 1 from flask import Flask
 2 from flask import request
 3 from flask import abort
 4 from flask import jsonify
 5 import re
 6 
 7 app = Flask(__name__)
 8 
 9 @app.route('/')
10 def index():
11     return 'hello world'
12 
13 
14 @app.route('/message/<message_id>',methods=['GET'])
15 def get_message(message_id):
16     if message_id == 'all':
17         search = 'all'
18     else:
19         if re.match(r'^\d+$',message_id):
20             search = int(message_id)
21         else:
22             abort(400)
23 
24     messages = [{'id':1,'site':'baidu'},{'id':2,'site':'taobao'}]
25     res = {}
26     
27     if search == 'all':
28         res['result'] = messages
29         res['status'] = 'success'
30     else:
31         for item in messages:
32             if item['id'] == search:
33                 res['result'] = [item]
34                 res['status'] = 'success'
35                 break
36         if 'result' not in res:
37             res['status'] = 'error'
38             res['content'] = 'id is not in range'
39     if request.headers['Content-Type'] == 'application/json':
40         return jsonify(res),{'Content-Type':'application/json'}
41     elif request.headers['Content-Type'] == 'text/xml':
42         return '<?xml version="1.0"?><site></site>',{'Content-Type':'text/xml'}
43     else:
44         return str(res)
45     
46 
47 if __name__ == '__main__':
48     app.run(port=5100)

代码解释：

restful api请求路由：/message/<message_id>，message_id为 all 或者 整型数字

数据源：messages = [{'id':1,'site':'baidu'},{'id':2,'site':'taobao'}]

代码中的abort：触发400错误即报Bad RequestThe browser (or proxy) sent a request that this server could not understand. ，当message_id不是all 也不是整型数字时

注意一点：Advanced Rest Client 测试请求时不要在Headers指定Accept（因为它可以接受多种类型），而应该指定Content-Type

返回值没有用到状态码，而是通过判断返回值中的status是success还是error

2.直接上测试结果图

注：有不懂的可以私信博主本人