由于jquery禁止通过ajax进行跨域请求，所以在通过ajax请求另外一个不同域名服务api的时候会报错：“No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access”


最简单的两个解决办法：

1、在django中return的时候设置

defxxxxx(request):....resp=HttpResponse(json.dumps({'code':code,'msg':msg,'data':data},ensure_ascii=False))resp["Access-Control-Allow-Headers"]="*"returnresp

2、在nginx中设置

add_headerAccess-Control-Allow-Origin*;add_headerAccess-Control-Allow-HeadersX-Requested-With;add_headerAccess-Control-Allow-MethodsGET,POST,OPTIONS;