CORS issue - Response to preflight request doesn't pass access control check:

 I am using React with Spring JWT faced similar issue as blocked by CORS policy .

added http.cors() in my SecurityConfigurer class to resolve

@EnableWebSecurity
public class SecurityConfigurer extends WebSecurityConfigurerAdapter {
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.cors().and().csrf().disable().......
    }
}

And Write some lines of inside Spring boot application:

@Bean
	public WebMvcConfigurer configure() {
		return new WebMvcConfigurer() {
			@Override
			public void addCorsMappings(CorsRegistry registry) {
				registry.addMapping("/**").allowedOrigins("*").allowedMethods("*").allowedHeaders("Acces-Control-Allow-Origin","*");
			}
		};
	}