如何让 web.py Python 网页服务返回一个 jQuery 的 JSONP 调用

目标是让基于 web.py 的 Python 网页服务通过 JSONP 将一个列表对象发送回 jQuery，以便 jQuery 可以通过 AJAX 调用访问该服务。

• 尽管阅读了很多示例，但仍然不知道如何让它起作用。
• 以下是正在使用的代码：
  • JavaScript:

xmlrpcproxy = 'http://0.0.0.0:1885/'; //Back To The Future III reference on the port :)

jQuery.ajaxSetup ({ url: xmlrpcproxy, // <--- returns valid json if accessed in the browser type: "GET", cache: false, contentType: "jsonp", // Pay attention to the dataType/contentType dataType: 'jsonp', // Pay attention to the dataType/contentType }); jQuery.ajax({ success: function(data) { console.log("You made it!"); }, error: function (xhr) { console.log("Error: " + xhr.statusText); } }).done(function(data){ console.log(data); var firstoption = 'Please Select'; jQuery("select#ItemIDSelect").html(firstoption); var i; var erplist = JSON.parse(data); jQuery("responsearea").append(erplist); for (i = 0; i < erplist.length; ++i) { jQuery("select#ItemIDSelect").append('' + erplist[i] + ''); } }); * **Python web.py 代码:** import web import xmlrpclib import json

urls = ( '/(.+)', 'index', )

class index: def GET(self): #THE FOLLOWING IS A SUCCESFULL QUERY FOR DATA TO AN ERP SERVER server = '..*.**' #hidden the openerp server for stackoverflow post username = 'admin' #the user pwd = 'admin' #the password of the user dbname = 'demo' #the database

# Get the uid
sock_common = xmlrpclib.ServerProxy ('http://%s:8069/xmlrpc/common'%(server))
uid = sock_common.login(dbname, username, pwd)

#replace localhost with the address of the server
sock = xmlrpclib.ServerProxy('http://%s:8069/xmlrpc/object'%(server))

# Unactive all product with a stock = 0.0 and using the ancient code

ids = sock.execute(dbname, uid, pwd, 'res.partner', 'search', [])

p_ids = sock.execute(dbname, uid, pwd, 'res.partner', 'read', ids, ['name'])
#END OF THAT PARTICULAR QUERY

a=[]
for p in p_ids:
    a.append(p['name'])
b = json.dumps(a)
return 'some_function(' + b + ')

example: typical content of b ["The Jackson Group's Project", "Research & Development", "E-Learning Integration", "Website Design Templates", "Data Import/Export Plugin", "1", "Project XXX", "Contract Agrolait", "Project : Agrolait"] ```

2. 解决方案

   • jQuery 似乎在回调查询参数中提供了回调函数名称。
   • 确保设置了正确的内容类型标头。
   • 回调函数名称可以在 Python 脚本中使用 web.input(callback='callback') 获取。
   • 以下是如何修改 Python 脚本以返回 JSONP 回调的示例：

import web import xmlrpclib import json

urls = ( '/(.+)', 'index', )

class index: def GET(self): callback_name = web.input(callback='callback').callback web.header('Content-Type', 'application/javascript')

    #THE FOLLOWING IS A SUCCESFULL QUERY FOR DATA TO AN ERP SERVER
    server = '***.***.*.**' #hidden the openerp server for stackoverflow post
    username = 'admin' #the user
    pwd = 'admin'      #the password of the user
    dbname = 'demo'    #the database



    # Get the uid
    sock_common = xmlrpclib.ServerProxy ('http://%s:8069/xmlrpc/common'%(server))
    uid = sock_common.login(dbname, username, pwd)

    #replace localhost with the address of the server
    sock = xmlrpclib.ServerProxy('http://%s:8069/xmlrpc/object'%(server))

    # Unactive all product with a stock = 0.0 and using the ancient code

    ids = sock.execute(dbname, uid, pwd, 'res.partner', 'search', [])

    p_ids = sock.execute(dbname, uid, pwd, 'res.partner', 'read', ids, ['name'])
    #END OF THAT PARTICULAR QUERY

    a=[]
    for p in p_ids:
        a.append(p['name'])
    b = json.dumps(a)
    return '%s(%s)' % (callback_name, b)

example: typical content of b ["The Jackson Group's Project", "Research & Development", "E-Learning Integration", "Website Design Templates", "Data Import/Export Plugin", "1", "Project XXX", "Contract Agrolait", "Project : Agrolait"] ```

• 现在，jQuery 应该能够正确地处理 JSONP 响应。