017 跨域问题-从springboot后台解决

解决跨域问题：

创建对应的包

package com.example.adminspringboot.config;


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;

/**
 * @author: zzq
 * @date:2023/1/9
 * @function: 解决数据跨域问题
 */
@Configuration
public class CorsConfig {

    private static final long MAX_AGE = 24 * 60 * 60;

    private CorsConfiguration buildConfig(){
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.addAllowedOrigin("http://localhost:8080"); //1. 设置访问源地址
        corsConfiguration.addAllowedHeader("*"); //2. 设置访问请求头
        corsConfiguration.addAllowedMethod("*"); //3. 设置访问请求方式
        corsConfiguration.setMaxAge(MAX_AGE);
        return corsConfiguration;
    }


    @Bean
    public CorsFilter corsFilter() {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", buildConfig());//4. 对接口配置跨域设置
        return new CorsFilter(source);
    }
}