使用virtualenv坏境

没有的话安装下

pip install virtualenv

启用virtualenv环境，安装pecan

$ virtualenv pecanrest-proj$ cd pecanrest-proj$ source bin/activate$ pip install pecan$ pecan create pecanrest$ cd pecanrest$ python setup.py develop

也可以手工创建pecanrest项目，及其文件结构，但是方便演示，还是通过pecan create自动创建

启动pecan

$ pecan serve config.py

应该会看到以下信息

Starting server in PID 14821serving on 0.0.0.0:8080, view at http://127.0.0.1:8080

访问127.0.0.1:8080会看到如下

终止的话 CTRL+C

json格式输出

$ cd pecanrest/controllers/$ vim root.py添加如下内容：from pecanrest.controllers import v1 class RootController(object):    v1 = v1.VersionController()另外创建v1.pyimport pecanfrom pecan import rest class VersionController(rest.RestController):    @pecan.expose('json')    def get(self):        return {"version": "1.0.0"}现在启动pecan$ cd ../..$ pecan serve config.py访问http://localhost:8080/v1将会看到返回{"version": "1.0.0"}

真正的REST API,   GET/POST/PUT/DELETE. 

$ cd pecanrest/controllers/$ mkdir api$ cd api创建以下文件rw-r--r-- 1 root root  113 Aug  1 16:26 api.pyrw-r--r-- 1 root root    0 Aug  1 16:25 __init__.pyrw-r--r-- 1 root root  703 Aug  1 16:26 order.py

api.py

from pecanrest.controllers.api import orderclass ApiController(object):    orders = order.OrdersController()

order.py

import pecanfrom pecan import rest, responseclass OrdersController(rest.RestController):    @pecan.expose("json")    def get(self):        return {            "100A": "1 bag of corn",            "293F": "2 bags of potatoes",            "207B": "1 bag of carrots"        }    @pecan.expose()    def post(self):        # TODO: Create a new order, (optional) return some status data        response.status = 201        return    @pecan.expose()    def put(self):        # TODO: Idempotent PUT (return 200 or 204)        response.status = 204        return    @pecan.expose()    def delete(self):        # TODO: Idempotent DELETE        response.status = 200        return

修改root.py

from pecanrest.controllers.api import apiclass RootController(object):    api = api.ApiController()

启动pecan, 访问 

将会看到调用了get方法