java - Rails 请求.xhr？不管用

Question

应用程序 - 2(Java 和 Rails)

Rails - 3.0.3

ruby - 1.8.7

客户端 - 从 Java 应用程序使用 Jquery 进行 Ajax 调用

Firebug - 显示它实际上是一个 Ajax XHR 请求(XHR 选项卡)

服务器 - Rails - request.xhr？ 假

ajax 响应缺少任何 gem(仅来自 java pp 的 ajax 请求)

我的 gem 列表如下:

abstract (1.0.0)
actionmailer (3.0.3)
actionpack (3.0.3)
activemodel (3.0.3)
activerecord (3.0.3)
activeresource (3.0.3)
activesupport (3.0.3)
arel (2.0.4)
builder (2.1.2)
bundler (1.3.4)
cgi_multipart_eof_fix (2.5.0)
columnize (0.3.6)
crack (0.1.8)
daemons (1.1.0)
delayed_job (2.1.2)
erubis (2.6.6)
fastthread (1.0.1)
gem_plugin (0.2.3)
hoptoad_notifier (2.3.12)
httparty (0.6.1)
i18n (0.4.2)
linecache (0.46)
mail (2.2.10)
mime-types (1.16)
mongrel (1.1.5)
mysql2 (0.2.6)
nokogiri (1.4.4)
polyglot (0.3.1)
rack (1.2.1)
rack-mount (0.6.13)
rack-test (0.5.6)
rails (3.0.3)
railties (3.0.3)
rake (0.8.7)
rbx-require-relative (0.0.9)
ruby-debug (0.10.4)
ruby-debug-base (0.10.4)
ruby-xslt (0.9.7)
rubygems-bundler (1.1.1)
rubyzip (0.9.4)
rvm (1.11.3.6)
thor (0.14.6)
treetop (1.4.9)
tzinfo (0.3.23)
xml-simple (1.0.12)

我的 Controller 代码是

def index
    if request.xhr?
      logger.debug "  Ajax request yes"
    else
      logger.debug "  Ajax request false"
    end
    respond_to do |format|
      format.html
      format.js
    end
end

Jquery 代码是:

$.ajax({
            type: "GET",            
            url:"someurl"

            cache:false,
            success: function(data) {
                alert('success');                           

            },
            error: function(jqXHR, textStatus, errorThrown){
                alert(jqXHR.responseText);
            }

服务器日志是

Started GET "/mozart_content?id=phyp10084_sa102&dt=20130704132018&api=a3aee3fa-567e-11df-be64-7779fa786bb0&sign=WBCbzBY0GDAP6mQVLxcFZX-ES10%3D" for 192.168.42.27 at Thu Jul 04 18:49:44 +0530 2013
  Processing by MozartContentController#index as HTML
  Parameters: {"sign"=>"WBCbzBY0GDAP6mQVLxcFZX-ES10=", "api"=>"a3aee3fa-567e-11df-be64-7779fa786bb0", "dt"=>"20130704132018", "id"=>"phyp10084_sa102"}
  Ajax request false
Rendered mozart_content/index.html.erb within layouts/application (149.3ms)
Completed 200 OK in 155ms (Views: 154.3ms | ActiveRecord: 0.0ms)

Answer 1

这就是问题所在...Ajax 无法跨域工作。

来自 Firefox 文档，

HTTP Requests made using the XMLHttpRequest object were subject to the same-origin policy. In particular, this meant that a web application using XMLHttpRequest could only make HTTP requests to the domain it was loaded from, and not to other domains.