Question

如何解决ajax跨域问题

Answer 1

用jsonp或者在服务端设置允许跨域

        response.addHeader("Access-Control-Allow-Origin", "*");
        response.addHeader("Access-Control-Allow-Methods", "GET, POST, OPTIONS");
        response.addHeader("Access-Control-Allow-Headers", "Origin, No-Cache, X-Requested-With, If-Modified-Since, "
                + "Pragma, Last-Modified, Cache-Control, Expires, Content-Type, X-E4M-With");

Answer 2

用jsonp，jsonp只能发get请求，传递的数据不能大于1k