使用自定義過濾器的時候
使用自定義過濾器時攀细，采用注解@CrossOrigin會失效箫踩，所以用以下代碼來搞定
public class TokenFilter extends OncePerRequestFilter {
@Override
protected void doFilterInternal(HttpServlet Requestrequest, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
// do something
cors(request, response);
// do something
}
private void cors(HttpServletRequest request, HttpServletResponse response) {
String allowOrigin = request.getHeader("Origin");
String allowMethods = "GET,PUT, POST, DELETE";
String allowHeaders = "Origin,No-Cache, X-Requested-With, If-Modified-Since, Pragma, Last-Modified,Cache-Control, Expires, Content-Type, X-E4M-With";
response.addHeader("Access-Control-Allow-Credentials", "true");
response.addHeader("Access-Control-Allow-Headers", allowHeaders);
response.addHeader("Access-Control-Allow-Methods", allowMethods);
response.addHeader("Access-Control-Allow-Origin", allowOrigin);
}
}
