#!/usr/bin/python
# -*- coding: UTF-8 -*-
import wsgiref.handlers
from google.appengine.ext import webapp
from google.appengine.ext import db
class Book(db.Model):
title = db.StringProperty()
class OutputPage(webapp.RequestHandler):
def get(self):
# 读取参数所指定的返回个数，默认是10个
count = self.request.get("c")
if count:
count = int(count)
else:
count = 10
#从数据库中取出数据
books = Book.all().fetch(count, 0)
# 返回格式是JSON
ret = []
for book in books:
ret.append("\"" + book.title + "\"")
output = "[" + ", ".join(ret) + "]"
self.response.headers['Content-Type'] = 'text/plain; charset=utf-8'
self.response.out.write(output)
class InputPage(webapp.RequestHandler):
def get(self):
# 输出提供输入的表格
self.response.out.write("""
""")
def post(self):
# 将内容取出输入数据库
content = self.request.get('content')
list = content.splitlines(False)
for item in list:
book = Book()
book.title = item
book.put()
self.redirect('/out')
class ClearPage(webapp.RequestHandler):
def get(self):
# 输出一个按钮
self.response.out.write("""
""")
def post(self):
# 删除所有记录
books = Book.all()
for book in books:
book.delete()
self.redirect('/in')
class MainPage(webapp.RequestHandler):
def get(self):
self.response.out.write("""
添加新书
查看书架
清空书架
""")
def main():
# 服务器主入口
application = webapp.WSGIApplication([
('/', MainPage),
('/in', InputPage),
('/out', OutputPage),
('/clear', ClearPage)],
debug=True)
wsgiref.handlers.CGIHandler().run(application)
if __name__ == "__main__":
main()