前后端分离时跨域设置

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


@Configuration
public class WebConfig extends WebMvcConfigurerAdapter {
    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**").allowedOrigins("*").allowedMethods("GET", "POST", "OPTIONS", "PUT")
            .allowedHeaders("Content-Type", "X-Requested-With", "accept", "Origin", "Access-Control-Request-Method",
                "Access-Control-Request-Headers")
            .exposedHeaders("Access-Control-Allow-Origin", "Access-Control-Allow-Credentials")
            .allowCredentials(true).maxAge(3600);
    }
}