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 40 if request.headers['Content-Type'] == 'application/json': 41 return jsonify(res),{'Content-Type':'application/json'} 42 elif request.headers['Content-Type'] == 'text/xml': 43 if 'result' not in res: 44 return '''<?xml version="1.0"?> 45 <objects> 46 <status>%s</status> 47 <content>%s</content> 48 </objects> 49 '''%(res['status'],res['content']),{'Content-Type':'text/xml'} 50 else: 51 res_head = '<?xml version="1.0"?><objects><result>' 52 res_foot = '</result><status>success</status></objects>' 53 res_body = '' 54 for item in res['result']: 55 res_body += '<item id="{id}"><id>{id}</id><site>{site}</site></item>'.format(id=item['id'],site=item['site']) 56 res_whole = res_head + res_body + res_foot 57 return res_whole,{'Content-Type':'text/xml'} 58 else: 59 return str(res) 60 61 62 63 if __name__ == '__main__': 64 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 Request The 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
