1、部署ngnix服务

 2、修改ngnix配置

在location 下的路径配置如下内容

add_header Access-Control-Allow-Origin *;

add_header Access-Control-Allow-Methods 'GET, POST, OPTIONS';

add_header Access-Control-Allow-Headers 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization';

if ($request_method = 'OPTIONS') { return 204; }

if ( !-f $request_filename ){ #关键配置

rewrite (.*) /404.png;

}

404.png为默认返回的图片 （纯透明的）,你们转换一下base64

data:image/png;base64,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

4图片放在ngnix跟目录下即可