Enable Global CORS in Spring Boot

CORS stands for Cross-Origin Resource Sharing. It is an HTTP-header based mechanism that permits loading of restricted web resources of one domain from another domain.

The following code shows you how to enable CORS in a Spring Boot Web Application:

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.HttpServletResponse;
import org.springframework.stereotype.Component;

@ Component
public class MyCorsFilter implements Filter {

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

    }

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

        HttpServletResponse httpResponse = (HttpServletResponse) response;
        httpResponse.addHeader("Access-Control-Allow-Origin", "*");
        httpResponse.addHeader("Access-Control-Allow-Methods",
                "POST, PUT, GET, DELETE, PATCH, OPTIONS");
        httpResponse.addHeader("Access-Control-Max-Age", "3600");
        httpResponse.addHeader("Access-Control-Allow-Credentials", "true");
        httpResponse.setHeader("Access-Control-Allow-Headers", "Origin, Content-Type, Accept");

        chain.doFilter(request, httpResponse);

    }

    @Override
    public void destroy() {

    }

}