,怎么解决

我有个数组叫黑名单里面比如说有（123，456,789），然后有个变量是X,我想做的事就是判断X不是黑名单里面的值

{"type":"http://www.jhipster.tech/problem/problem-with-message","title":"Unsupported Media Type","status":415,"detail":"Content type 'application/x-www-form-urlencoded;Charset=UTF-8' not supported","path":"/api/order-infos/searchdetermination","message":"error.http.415"} 用助手POST的的时候提示这个是 ...