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@Configuration
public class CorsConfig implements WebMvcConfigurer {
    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
                .allowedOrigins("*")
                .allowedMethods("GET", "HEAD", "POST", "PUT", "DELETE", "OPTIONS")
                .allowCredentials(true)
                .maxAge(3600)
                .allowedHeaders("*");
    }
}

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@RestController
@CrossOrigin(value = "*",allowCredentials = "true")
@RequestMapping("user")
public class UserController {
    @PostMapping(value = "login")
    public Map<String, Object> login(@RequestBody User user) {
        Map<String, Object> map = new HashMap<>();
        map.put("userName",user.getUserName());
        map.put("userPass",user.getUserPass());
        return map;
    }
    @PostMapping(value = "logout")
    public Map logout(@RequestBody String token) {
        Map<String, String> map = new HashMap<>();
        map.put("token",token);
        return map;
    }
}

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protected HandlerExecutionChain getCorsHandlerExecutionChain(HttpServletRequest request,
		HandlerExecutionChain chain, @Nullable CorsConfiguration config) {

	if (CorsUtils.isPreFlightRequest(request)) {
		HandlerInterceptor[] interceptors = chain.getInterceptors();
		chain = new HandlerExecutionChain(new PreFlightHandler(config), interceptors);
	}
	else {
	
		chain.addInterceptor(0, new CorsInterceptor(config));
	}
	return chain;
}