Spring Boot解决跨域问题-最简单的方式

省去了使用过滤器什么的配置文件、又是拦截器、又是@Configuration注解

最简单的，直接再springboot启动类上加上相关的代码即可。

package com.englishcode.test;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;

/**
 * @author: YinLei
 * Package:  com.englishcode.test
 * @date: 2021/5/7 17:19
 * @Description:
 * @version: 1.0
 */
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

    /**
     *  跨域配置
     * */
    @Bean
    public CorsFilter corsFilter() {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        CorsConfiguration config = new CorsConfiguration();
        //允许任何域名、任何请求头、任何方式的提交方法
        config.addAllowedOrigin("*");
        config.addAllowedHeader("*");
        config.addAllowedMethod("*");
        //对所有接口都有效
        source.registerCorsConfiguration("/**", config);
        return new CorsFilter(source);
    }
}