'Access-Control-Allow-Origin' error in Spring MVC + Zepto POST

Question

I\'m trying to POST a JSON object to my Spring MVC controller, but I only receive an Access-Control-Allow-Origin error.

My controller:

@         


        

Answer 1

If your application is configured programmatically, then you need next code in your WebApplicationInitializer implementation instead of 'xml':

public class WebAppInitializer implements WebApplicationInitializer {

  @Override
  public void onStartup(ServletContext servletContext) {
      ... // your context configuration like in Spring.io tutorial

     // Register filter to allow cross-domain requests
     registerServletFilter(servletContext, new SimpleCORSFilter());
  }

  ...

  protected FilterRegistration.Dynamic registerServletFilter(ServletContext servletContext, Filter filter) {
    String filterName = Conventions.getVariableName(filter);
    FilterRegistration.Dynamic registration = servletContext.addFilter(filterName, filter);
    registration.setAsyncSupported(true);
    registration.addMappingForUrlPatterns(EnumSet.allOf(DispatcherType.class), false, "/*");
    return registration;
  }
}

if the filter is

@Component
public class SimpleCORSFilter implements Filter {

  public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
    HttpServletResponse response = (HttpServletResponse) res;
    response.setHeader("Access-Control-Allow-Origin", "*");
    response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
    response.setHeader("Access-Control-Max-Age", "3600");
   response.setHeader("Access-Control-Allow-Headers", "Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept");
    chain.doFilter(req, res);
  }

  public void init(FilterConfig filterConfig) {}

  public void destroy() {}

}