现世安稳。

摘要： 跨域问题Java方式解决及Nginx方式解决： 1，Response for preflight has invalid HTTP status code 403 2，Nginx允许跨域访问的配置问题 3，nginx: [emerg] unknown directive "if($request_method" 4，The 'Access-Control-Allow-Origin' header contains multiple values '*, *', but only one is allowed. 阅读全文