SpringBoot-跨域访问

方法一：

单个接口实现跨域

在controller 方法上加 @CrossOrigin 注解

方法二

全局跨域处理

自定义 WebMvcConfigurer 注册到容器里，可以执行访问的路径

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

@Configuration(proxyBeanMethods = false)
public class MyCorsConfiguration {

    @Bean
    public WebMvcConfigurer corsConfigurer() {
        return new WebMvcConfigurer() {

            @Override
            public void addCorsMappings(CorsRegistry registry) {
                registry.addMapping("/api/**");
            }

        };
    }

}

方法三：

Spring Security 中配置跨域

    @Bean
    protected CorsConfigurationSource corsConfigurationSource() {
        CorsConfiguration configuration = new CorsConfiguration();
        configuration.setAllowedOrigins(Arrays.asList("*"));
        configuration.setAllowedMethods(Arrays.asList("GET", "POST", "HEAD", "OPTION", "PUT", "DELETE"));
        configuration.setAllowedHeaders(Arrays.asList("*"));
        // CORS 会有一个预检的OPTION请求，设置maxAge将预检命令进行缓存，而不是每次都执行预检请求
        configuration.setMaxAge(3600L);
        configuration.addExposedHeader("Authorization");
        configuration.addExposedHeader("UUID");
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", configuration);
        return source;
    }