灰度中间件加files的处理

@@ -6,6 +6,7 @@ var request = require('request');
 
 var config = require('../config/gray');
 var _ = require('lodash');
+var fs = require('fs');
 
 /**
  * 灰度界面配置
@@ -54,7 +55,11 @@ module.exports = function(proxyRoute) {
       } else {
         options.headers['cookie'] = req.session.gray;
       }
-
+      //如果是上传文件添加文件信息到form表单
+      if(req.files && _.keys(req.files).length>0) {
+        options.formData = addFiles(req);
+        delete options.form;
+      }
       logger.log('info','grayroute: request options: %j',options,{});
 
       //发起代理请求
@@ -89,3 +94,16 @@ module.exports = function(proxyRoute) {
     }
   }
  }
+ 
+ /**
+ * 添加文件到body中
+ * @param {Object} req 请求对象
+ */
+ function addFiles(req) {
+    var body = {};
+    _.forEach(req.files,function(v,k){
+      body[k] = fs.createReadStream(v.path);
+    });
+   _.merge(body,req.body);
+   return body;
+ }
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