1. 首页
  2. 问答
  3. Ruby on Rails的 - 多POST请求

Ruby on Rails的 - 多POST请求

2017-02-14 102 views
0

下午好，Ruby on Rails的 - 多POST请求

我有在轨道上的乘客/ nginx的与分配给它的3个进程运行（4.1.14）的应用程序内部的红宝石。非常偶尔（< 5％的时间）我从单个提交操作中获得多个POST。以下是日志的样子：

1）用户访问使用Google Chrome的build_item_interaction＃new。这产生3（！）GET请求。

I, [2017-02-14T13:27:49.679558 #19777] INFO -- : Started GET "/build_item_interactions/new?serial_number=1702R022&type=end_of_line" for 192.168.45.105 at 2017-02-14 13:27:49 -0600 
I, [2017-02-14T13:27:49.681263 #19777] INFO -- : Processing by BuildItemInteractionsController#new as HTML 
I, [2017-02-14T13:27:49.681354 #19777] INFO -- : Parameters: {"serial_number"=>"1702R022", "type"=>"end_of_line"} 
I, [2017-02-14T13:27:49.690776 #19777] INFO -- : Rendered build_item_interactions/_new_interaction.html.erb (4.7ms) 
I, [2017-02-14T13:27:49.690956 #19777] INFO -- : Rendered build_item_interactions/new.html.erb within layouts/application (5.1ms) 
I, [2017-02-14T13:27:49.693310 #19777] INFO -- : Rendered layouts/_login_header.html.erb (1.4ms) 
I, [2017-02-14T13:27:49.693779 #19777] INFO -- : Completed 200 OK in 12ms (Views: 8.6ms | ActiveRecord: 1.0ms) 
I, [2017-02-14T13:27:49.712790 #19777] INFO -- : Started GET "/build_item_interactions/new?serial_number=1702R022&type=end_of_line" for 192.168.45.105 at 2017-02-14 13:27:49 -0600 
I, [2017-02-14T13:27:49.714741 #19777] INFO -- : Processing by BuildItemInteractionsController#new as HTML 
I, [2017-02-14T13:27:49.714852 #19777] INFO -- : Parameters: {"serial_number"=>"1702R022", "type"=>"end_of_line"} 
I, [2017-02-14T13:27:49.722208 #19777] INFO -- : Rendered build_item_interactions/_new_interaction.html.erb (3.5ms) 
I, [2017-02-14T13:27:49.722370 #19777] INFO -- : Rendered build_item_interactions/new.html.erb within layouts/application (3.8ms) 
I, [2017-02-14T13:27:49.724351 #19777] INFO -- : Rendered layouts/_login_header.html.erb (1.2ms) 
I, [2017-02-14T13:27:49.724693 #19777] INFO -- : Completed 200 OK in 10ms (Views: 6.4ms | ActiveRecord: 0.7ms) 
I, [2017-02-14T13:27:49.746169 #19777] INFO -- : Started GET "/build_item_interactions/new?serial_number=1702R022&type=end_of_line" for 192.168.45.105 at 2017-02-14 13:27:49 -0600 
I, [2017-02-14T13:27:49.747577 #19777] INFO -- : Processing by BuildItemInteractionsController#new as HTML 
I, [2017-02-14T13:27:49.747658 #19777] INFO -- : Parameters: {"serial_number"=>"1702R022", "type"=>"end_of_line"} 
I, [2017-02-14T13:27:49.754470 #19777] INFO -- : Rendered build_item_interactions/_new_interaction.html.erb (3.6ms) 
I, [2017-02-14T13:27:49.754647 #19777] INFO -- : Rendered build_item_interactions/new.html.erb within layouts/application (3.9ms) 
I, [2017-02-14T13:27:49.756809 #19777] INFO -- : Rendered layouts/_login_header.html.erb (1.3ms) 
I, [2017-02-14T13:27:49.757209 #19777] INFO -- : Completed 200 OK in 9ms (Views: 6.9ms | ActiveRecord: 0.7ms)

2）然后，用户点击一个派生连续2所POST请求的页面上的[提交]按钮：

I, [2017-02-14T13:27:59.692934 #19777] INFO -- : Started POST "/build_item_interactions?serial_number=1702R022&type=end_of_line" for 192.168.45.105 at 2017-02-14 13:27:59 -0600 
I, [2017-02-14T13:27:59.693996 #19777] INFO -- : Processing by BuildItemInteractionsController#create as HTML 
I, [2017-02-14T13:27:59.694105 #19777] INFO -- : Parameters: {"utf8"=>"?", "authenticity_token"=>"FFs8Uh07oKpvZ57wHzTll/PQxVp0eaK3bVIsOKUDGPU=", "build_item_interaction"=>{"build_item_id"=>"4501 
", "interaction_type_id"=>"5", "data"=>"", "badge"=>["SuxY3ATMMjs"]}, "commit"=>"Save Checkpoint", "serial_number"=>"1702R022", "type"=>"end_of_line"} 
I, [2017-02-14T13:27:59.708826 #19777] INFO -- : Redirected to http://fbdbms/build_items/4501 
I, [2017-02-14T13:27:59.709030 #19777] INFO -- : Completed 302 Found in 15ms (ActiveRecord: 7.0ms) 
I, [2017-02-14T13:27:59.733202 #19777] INFO -- : Started POST "/build_item_interactions?serial_number=1702R022&type=end_of_line" for 192.168.45.105 at 2017-02-14 13:27:59 -0600 
I, [2017-02-14T13:27:59.734318 #19777] INFO -- : Processing by BuildItemInteractionsController#create as HTML 
I, [2017-02-14T13:27:59.734412 #19777] INFO -- : Parameters: {"utf8"=>"?", "authenticity_token"=>"FFs8Uh07oKpvZ57wHzTll/PQxVp0eaK3bVIsOKUDGPU=", "build_item_interaction"=>{"build_item_id"=>"4501 
", "interaction_type_id"=>"5", "data"=>"", "badge"=>["SuxY3ATMMjs"]}, "commit"=>"Save Checkpoint", "serial_number"=>"1702R022", "type"=>"end_of_line"} 
I, [2017-02-14T13:27:59.747852 #19777] INFO -- : Redirected to http://fbdbms/build_items/4501 
I, [2017-02-14T13:27:59.748100 #19777] INFO -- : Completed 302 Found in 14ms (ActiveRecord: 5.7ms)

3）创建了两个记录，然后用户被转发到资源“所有者” 页：

I, [2017-02-14T13:27:59.756761 #19777] INFO -- : Started GET "/build_items/4501" for 192.168.45.105 at 2017-02-14 13:27:59 -0600 
I, [2017-02-14T13:27:59.757784 #19777] INFO -- : Processing by BuildItemsController#show as HTML 
I, [2017-02-14T13:27:59.757850 #19777] INFO -- : Parameters: {"id"=>"4501"} 
I, [2017-02-14T13:27:59.809268 #19777] INFO -- : Rendered shared/_rfid_scans_table.html.erb (0.1ms) 
I, [2017-02-14T13:27:59.809422 #19777] INFO -- : Rendered build_items/show.html.erb within layouts/application (41.4ms) 
I, [2017-02-14T13:27:59.811722 #19777] INFO -- : Rendered layouts/_login_header.html.erb (1.3ms) 
I, [2017-02-14T13:27:59.812213 #19777] INFO -- : Completed 200 OK in 54ms (Views: 12.3ms | ActiveRecord: 35.6ms)

控制器相关的代码如下所示：

class BuildItemInteractionsController < ApplicationController 
    def new 
     load_build_item 
     load_interaction_info 
     if @interaction_info then 
      @interaction = BuildItemInteraction.new(build_item_id: @build_item.try(:id), 
                interaction_type_id: @interaction_info[:id]) 
     end 
    end 
    def create 
     load_build_item 
     load_interaction_info 
     badge = params[:build_item_interaction][:badge] 
     user = Badge.valid_badge(badge) 

     @interaction = BuildItemInteraction.new(params_for_interaction) 
     @interaction.user = user 
     if @interaction.save then 
      flash[:success] = "Record saved" 
      redirect_to @interaction.build_item 
     else  
      err = @interaction.errors.full_messages 
      flash.now[:danger] = "Could not save record: #{err}" 
      render "new" 
     end 
    end 
    private 
     def load_interaction_info 
      @interactions = { "teardown" => { id: 9, description: "End of Teardown" }, 
          "sta4"  => { id: 6, description: "End of Station 4" }, 
          "sta7"  => { id: 7, description: "End of Station 7" }, 
          "sta8"  => { id: 8, description: "End of Test" }, 
          "end_of_line" => { id: 5, description: "End of Line" } } 
      interaction_type = params[:type] 
      @interaction_info = @interactions[interaction_type] 
     end 
     def load_build_item 
      sn = params[:serial_number] 
      @build_item = BuildItem.where(serial_number: sn).first 
     end 
     def params_for_interaction 
      params.require(:build_item_interaction).permit(:build_item_id, :interaction_type_id, :badge, :data) 
     end 
end

这里的表单代码的样子：

<h2><%= @interaction_info[:description] %> Scan for <%= @build_item.serial_number%></h2> 

<p><%= link_to("Back to Unit Record", @build_item) %></p> 

<div class="well"> 
    <%= simple_form_for(@interaction, 
         :url => build_item_interactions_path(type: "end_of_line", serial_number: @build_item.serial_number), 
         :html => { :class => "form-horizontal" }, 
         wrapper: :horizontal_form, 
         wrapper_mappings: { 
          check_boxes: :horizontal_radio_and_checkboxes, 
          radio_buttons: :horizontal_radio_and_checkboxes, 
          file: :horizontal_file_input, 
          boolean: :horizontal_boolean}) do |f| %> 
     <%= f.association :build_item,  as: :hidden %> 
     <%= f.association :interaction_type, as: :hidden %> 
     <%= f.input  :data, label: "Comments", as: :text %> 


     <div class="form-group select required build_item_interaction_badge"> 
      <label class="select required col-sm-3 control-label" for="build_item_interaction_badge"> 
       <abbr title="required">*</abbr>Badge 
      </label> 
      <div class="col-sm-9"> 
       <%= password_field "build_item_interaction[badge]", nil, class: "string required form-control", 
                      id: "build_item_interaction_badge", 
                      placeholder: "XXXXXXXXXXXX" %> 
       </div> 
     </div> 
     <div class="text-center"> 
      <%= f.submit "Save Checkpoint", data: {disable_with: "Saving..."} %> 
     </div> 
    <% end %> 
</div>

我想不通，为什么我最终得到2倍POST请求。我尝试过的一些事情：

1）向提交按钮添加数据：{disable_with：“Saving ...”}。这似乎工作（它会灰色/禁用按钮）点击。

2）我已经阅读了CSRF令牌。看起来这个令牌的存在应该足以防止第二个请求被处理。唉 - 日志显示这两个请求都在0.1s内使用相同的authentication_token命中，我得到两条新记录。

有什么建议吗？

更新： 我检查了nginx的访问日志，并有多个请求通过nginx的被处理，以及：

192.168.45.105 - - [14/Feb/2017:13:27:49 -0600] "GET /build_item_interactions/new?serial_number=1702R022&type=end_of_line HTTP/1.1" 499 0 "http://fbdbms/build_items/4501" "Mozilla/5.0 (Windows NT 6 
.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36" "-" 
192.168.45.105 - - [14/Feb/2017:13:27:49 -0600] "GET /build_item_interactions/new?serial_number=1702R022&type=end_of_line HTTP/1.1" 200 1657 "http://fbdbms/build_items/4501" "Mozilla/5.0 (Windows N 
T 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36" "-" 
192.168.45.105 - - [14/Feb/2017:13:27:49 -0600] "GET /build_item_interactions/new?serial_number=1702R022&type=end_of_line HTTP/1.1" 200 1657 "http://fbdbms/build_items/4501" "Mozilla/5.0 (Windows N 
T 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36" "-" 
192.168.45.105 - - [14/Feb/2017:13:27:59 -0600] "POST /build_item_interactions?serial_number=1702R022&type=end_of_line HTTP/1.1" 302 107 "http://fbdbms/build_item_interactions/new?serial_number=170 
2R022&type=end_of_line" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36" "-" 
192.168.45.105 - - [14/Feb/2017:13:27:59 -0600] "POST /build_item_interactions?serial_number=1702R022&type=end_of_line HTTP/1.1" 302 107 "http://fbdbms/build_item_interactions/new?serial_number=170 
2R022&type=end_of_line" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36" "-"

的多个GET请求可能链接到Chrome的预测浏览功能prev discussion here。这很好，但多个POST是问题。

来源

2017-02-14 Gary P

回答

1

以下是你需要做什么才能根本原因的罪魁祸首

浏览器：如果您使用的是Chrome。按F12（Ctrl + Shift + c）检查您的浏览器Network选项卡，查看从浏览器发送的请求数量是多少，请求GET & POST请求。如果您看到只有一个浏览器或您的前端不是问题

Nginx：检查您的Nginx access logs，打印所有到达服务器的请求。如果这是打印多个请求，然后我怀疑浏览器&服务器之间的东西造成这可能是Load Balancer。不知道你的设置是否有LB。如果不打印多个请求则显然有些事情与Nginx的或这是造成这个复制请求和发送到你的Rails服务器

来源

2017-02-15 02:32:19 Gowtham

+0

@Gowtham嗨客的配置做的，它看起来像Chrome浏览器确实使多个请求。我已经用nginx日志更新了主帖。它看起来像问题是与[在Chrome浏览预测（http://stackoverflow.com/questions/4460661/what-to-do-with-chrome-sending-extra-requests）。这解释了GET请求，但不是多个POST。 –

+0

Hi @GaryP你有任何提交此表单的JavaScript代码，或者它是一个常规的浏览器表单提交。如果这是一个JS提交，那么你需要确保你通过在JS表单提交事件处理程序中调用event.preventDefault（true）来禁止默认的浏览器提交，否则会导致双提交。 – Gowtham

相关问题

 相关问题