修复http内,value为0被忽略问题

plugins/http.js

@@ -30,7 +30,7 @@ const post = async (path, data = {}, payload) => {
   for(const key in data) {
     if(data.hasOwnProperty(key)) {
       const element = data[key]
-      if(element) formData += `${key}=${element}&`
+      if(element || element === 0) formData += `${key}=${element}&`
     }
   }
   formData = formData.slice(0, formData.length - 1)