springboot前后端分离之跨域

springmvc有多种处理跨域的方法，介绍最简单的一种：

@Configuration
public class WebMvcConfig  extends WebMvcConfigurerAdapter {
	@Override
	public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
        .allowedOrigins("*")
        .allowedMethods("GET", "POST", "PUT", "OPTIONS", "DELETE", "PATCH")
        .allowCredentials(false).maxAge(3600);
	}
}

还有使用spring security时需在@EnableWebSecurity配置类里

@Override
protected void configure(HttpSecurity http) throws Exception {
		http.cors().and().crsf().disable();
}