SpringBoot解決跨域

第一種：書寫解決跨域的類

public class AccessControlAllowOriginFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    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-Allow-Credentials", "true");
        chain.doFilter(req, response);
    }

    @Override
    public void destroy() {

    }
}

第二種：在具體方法上使用註解@CrossOrigin(origins = "*")