瀏覽器跨越問題Access-Control-Allow-Origin Access-Control-Allow-Headers 屬性設置

public class MobileDeviceTypeDetectionFilter implements Filter {
// 自定義過濾器
    @Override
    public void destroy() {

    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        final HttpServletRequest httpRequest = (HttpServletRequest) request;
        final HttpServletResponse httpResponse = (HttpServletResponse) response;

        httpResponse.setHeader("Access-Control-Allow-Origin", "*"); // 請求域名
        httpResponse.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");// 請求方法
        httpResponse.setHeader("Access-Control-Max-Age", "3600");
        httpResponse.setHeader("Access-Control-Allow-Headers", "*"); // 允許的請求頭
　　　　// 瀏覽器默認會發起異常 OPTIONS 的請求方式 這個時候我們通過過濾器直接攔截返回200后就可以解決跨越問題
        if ("OPTIONS" == (httpRequest.getMethod())) {
            httpResponse.setStatus(HttpServletResponse.SC_OK);

        }
        chain.doFilter(httpRequest, httpResponse);
    }

    @Override
    public void init(FilterConfig arg0) throws ServletException {

    }

}