No 'Access-Control-Allow-Origin' header is present on the requested resource. Ionic, AngularJS, Spring Boot 1.3

Question

I am using Ionic and Spring Boot 1.3. It wasn't until I upgraded to 1.3 that I am getting this problem...

Apparently after updating to Spring Boot 1.3. CorsFilter is being ignored completely. All this deprecation is driving me nuts. So I looked up the NEW way and this is what I got.

package app.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

@Configuration
@EnableWebMvc
public class WebConfig extends WebMvcConfigurerAdapter {

    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
                .allowedOrigins("http://192.168.1.66:8101")
                .allowCredentials(false)
                .maxAge(3600)
                .allowedHeaders("Accept", "Content-Type", "Origin", "Authorization", "X-Auth-Token")
                .exposedHeaders("X-Auth-Token", "Authorization")
                .allowedMethods("POST", "GET", "DELETE", "PUT", "OPTIONS");
    }
}

The above piece of code is excuted on the boot of the application. Unlike CorsFilter that is executed every time there is a request. But switching to Spring Boot 1.3, I can no longer get this in the chain filter.

Again, the code is being loaded, I set a break point and addCorsMapping is called every time so the settings are being made. So.... Why am I still getting this error

XMLHttpRequest cannot load http://192.168.1.66:8080/login?username=billyjoe&password=happy. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://192.168.1.66:8101' is therefore not allowed access.

EDIT Below is my old CorsFilter. It no longer works since I updated to Spring Boot 1.3

package app.config;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

@Component
public class CorsFilter implements Filter {

    private final Logger log = LoggerFactory.getLogger(CorsFilter.class);

    public CorsFilter() {
        log.info("SimpleCORSFilter init");
    }

    @Override
    public void doFilter(ServletRequest req,
                         ServletResponse res,
                         FilterChain chain) throws IOException, ServletException {

        HttpServletRequest request = (HttpServletRequest) req;
        HttpServletResponse response = (HttpServletResponse) res;
        String clientOrigin = request.getHeader("origin");
        response.addHeader("Access-Control-Allow-Origin", clientOrigin);
        response.setHeader("Access-Control-Allow-Methods", "POST, GET,  DELETE, PUT");
        response.setHeader("Access-Control-Allow-Credentials", "true");
        response.setHeader("Access-Control-Max-Age", "3600");
        response.setHeader("Access-Control-Allow-Headers", "Accept, Content-Type, Origin, Authorization, X-Auth-Token");
        response.addHeader("Access-Control-Expose-Headers", "X-Auth-Token");

        if (request.getMethod().equals("OPTIONS")) {
            response.setStatus(HttpServletResponse.SC_OK);
        } else {
            chain.doFilter(request, response);
        }
    }

    @Override
    public void init(FilterConfig filterConfig) {
    }

    @Override
    public void destroy() {
    }

}

Answer 1

You can try something like this. It's working for me:.

@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, PUT, OPTIONS, DELETE, PATCH");
        response.setHeader("Access-Control-Max-Age", "3600");
        response.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
        chain.doFilter(req, res);
    }

    public void init(FilterConfig filterConfig) {}

    public void destroy() {}

}

Answer 2

Figured it out. I am using a CustomToken Login and for some reason The new Configurations for 1.3 and higher do not set the response with Access-Control-Allow-Origin when using custom Login Authentication. So somewhere in my custom login I had to add the response header.

httpServletResponse.addHeader("Access-Control-Allow-Origin", "http://192.168.1.66:8080"); 

In older versions of Spring, the CorsFilter is set in the filter so it would set this everytime a call is made. It seems the New Configs only work when properly calling a Controller but since login is handled in the Filters and not a Controller, the response body is never set. It properly authenticates the user Access-Control-Allow-Origin