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@Component
@Order(Ordered.HIGHEST_PRECEDENCE)
@WebFilter("/*")
public class SimpleCORSFilter implements Filter {
private static final String OPTIONS_REQUEST = "OPTIONS";
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest req, ServletResponse resp,
FilterChain chain) throws IOException, ServletException {
HttpServletResponse response = (HttpServletResponse) resp;
response.setHeader("Access-Control-Allow-Origin", "*");
response.setHeader("Access-Control-Allow-Credentials", "true");
response.setHeader("Access-Control-Allow-Methods", "GET, HEAD, OPTIONS, POST, PUT, DELETE");
response.setHeader("Access-Control-Max-Age", "3600");
response.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept, Authorization");
HttpServletRequest request = (HttpServletRequest) req;
final String requestMethod = request.getMethod();
if (OPTIONS_REQUEST.equalsIgnoreCase(requestMethod)) {
response.setStatus(HttpServletResponse.SC_NO_CONTENT);
} else {
chain.doFilter(req, resp);
}
}
@Override
public void destroy() {
}
}