輝哥手把手教你解決：springboot項目解決跨域問題

package com.sszh.mall.operate.filter;

import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;

@Configuration
public class CorsConfig {

    /**
     * cors support
     * @return
     */
    @Bean
    public FilterRegistrationBean corsFilter() {
        // 註冊CORS過濾器
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        CorsConfiguration config = new CorsConfiguration();
        config.setAllowCredentials(true); // 是否支持安全證書
        config.addAllowedOrigin("*"); // 允許任何域名使用
        config.addAllowedHeader("*"); // 允許任何頭
        config.addAllowedMethod("*"); // 允許任何方法（post、get等）
        // 預檢請求的有效期，單位爲秒。
        //        config.setMaxAge(3600L);

        source.registerCorsConfiguration("/**", config);
        FilterRegistrationBean bean = new FilterRegistrationBean(new CorsFilter(source));
        bean.setOrder(0);
        return bean;
    }
}