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获取token
require 'json'
require 'base64'
require 'openssl'module Aliyunclass AliyunOssTokendef initialize@access_key_id = Rails.configuration.application['ALIYUN_OSS_ACCESS_KEY_ID']@access_key_secret = Rails.configuration.application['ALIYUN_OSS_ACCESS_KEY_SECRET']@oss_host = Rails.configuration.application['ALIYUN_OSS_HOST']@expire_time = 30enddef self.oss_token(updir)new().get_token(updir)enddef get_token(updir) updir = updir + '/'condition_arrary = [['starts-with', '$key', updir]]expire_syncpoint = Time.now.to_i + @expire_timeexpire = Time.at(expire_syncpoint).utc.iso8601()policy_dict = {conditions: condition_arrary,expiration: expire}policy = hash_to_jason(policy_dict)policy_encode = Base64.strict_encode64(policy).chomph = OpenSSL::HMAC.digest('sha1', @access_key_secret, policy_encode)sign_result = Base64.strict_encode64(h).strip()token_dict = {accessid: @access_key_id,host: @oss_host,policy: policy_encode,signature: sign_result,expire: expire,callback: '',dir: updir}result = hash_to_jason(token_dict)enddef hash_to_jason(source_hash)jason_string = source_hash.to_json; jason_string.gsub!("\":[", "\": [")jason_string.gsub!("\",\"", "\", \"")jason_string.gsub!("],\"", "], \"")jason_string.gsub!("\":\"", "\": \"")jason_stringendend
end
condition_arrary = [
['starts-with', '$key', updir]
]
这里这个key，我看了很久，文档有的地方又说是app secret, 其实就直接用'$key'就好，应该是要替换前端传递的key值
前端
# Place all the behaviors and hooks related to the matching controller here.
# All this logic will automatically be available in application.js.
# You can use CoffeeScript in this file: http://coffeescript.org/send_request = (updir) ->xmlhttp = nullif window.XMLHttpRequest?xmlhttp=new XMLHttpRequest()else if window.ActiveXObject?xmlhttp=new ActiveXObject("Microsoft.XMLHTTP")if xmlhttp?serverUrl = "/xxx?updir=#{updir}"xmlhttp.open( "GET", serverUrl, false )xmlhttp.send()return xmlhttp.responseTextelse alert('Your browser does not support XMLHTTP')# 生成文件名称
random_string = () ->chars = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678'pwd = ''for num in [1..28]pwd += chars.charAt(Math.floor(Math.random() * chars.length))return pwd# 获取后缀并重新命名文件
get_new_file_name = (file) -> pos = file.lastIndexOf('.')new_file_name = ''if (pos != -1)?file_name = random_string()suffix = file.substring(pos)new_file_name = file_name + suffixreturn new_file_name# 获取签名
get_signature = (updir) ->sign_body = send_request(updir)signature_obj = eval ("(" + sign_body + ")")return signature_obj#设置参数
set_upload_param = (file_key, signature_obj) -> multipart_params = {'key' : file_key,'policy': signature_obj['policy'],'OSSAccessKeyId': signature_obj['accessid'], 'success_action_status' : '200', 'callback': '','signature': signature_obj['signature'],}res = {'url': signature_obj['host'],'multipart_params': multipart_params}return res# 图片列表模板
li_img_template = (url, file_name) ->return "<li><img src='#{url+file_name}' /><span class='delete-image'></span><p>#{file_name}</p></li>"
# 上传失败
fail_template = () ->return "<li>上传失败</li>"$(document).on 'turbolinks:load', ->$('.media-picker').each ->el = $(this)# 长传按钮elbtn = el.find('.media-picker-button')# 上传路径upload_path = elbtn.attr('data-path')# 上传类型image videomedia_accept = elbtn.attr('data-accept')media_id = elbtn.attr('data-id')# 获取值input_field = el.find('input[type=hidden]')# 多图临时存储image_files = new Array()# 是否多文件上传multi_selection = falseif elbtn.attr('data-multipe')?multi_selection = true# 是否有值#old_files = input_field.val()old_files = input_field.attr('value')if old_files != ''image_files = JSON.parse(old_files)# sign 签名signature_obj = '' # 新文件名称new_file_name = ''uploader = new plupload.Uploader({runtimes : 'html5,flash,silverlight,html4',browse_button : elbtn.attr('data-id') + '_uploader', multi_selection: multi_selection,auto_start: true,flash_swf_url : '../plupload/js/Moxie.swf',silverlight_xap_url : '../plupload/js/Moxie.xap',#url: '/backend/upload'filters: {mime_types: [{title : "Image files", extensions : "jpg,jpeg,gif,png,bmp"}],max_file_size: '5mb', #最大只能上传5mb的文件prevent_duplicates: false, #不允许选取重复文件},init: {PostInit: () -> BeforeUpload: (up, file) -> signature_obj = get_signature(upload_path)file_name = get_new_file_name(file.name)new_file_name = signature_obj['dir'] + file_nameparams = set_upload_param(new_file_name, signature_obj)up.setOption(params)FilesAdded: (up) ->up.start()FileUploaded: (up, file, info) -> if info.status == 200 file_name = new_file_namehtml = ''url = signature_obj['host'] + '/'if multi_selectionimage_files.push(file_name)#input_field.val(JSON.stringify(image_files))input_field.attr('value', JSON.stringify(image_files))for image in image_files html += li_img_template(url, image)else input_field.val(file_name)html += li_img_template(url, file_name)el.next('small').find('.image-list ul').html(html)Error: (up, err) ->html = fail_template()el.next('small').find('.image-list ul').html(html)}})uploader.init()# 删除$('.media-picker').each ->el = $(this)# 长传按钮elbtn = el.find('.media-picker-button')# images listimages_list = el.next('small').find('.image-list ul')# 获取值input_field = el.find('input[type=hidden]')#old_files = input_field.val()old_files = input_field.attr('value')if elbtn.attr('data-multipe')?if old_files != ''image_files = JSON.parse(old_files)images_list.on 'click', '.delete-image', (event) =>current_target = $(event.currentTarget)current_image = current_target.next('p').html()current_target.parent().remove()# 是否多文件上传multi_selection = falseif elbtn.attr('data-multipe')?image_files.splice(image_files.indexOf(current_image), 1)#input_field.val(JSON.stringify(image_files))input_field.attr('value', JSON.stringify(image_files))else input_field.val('')$.post("/xxx", { filename: current_image})
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