springboot解決跨域問題Corsconfig.java

測試的時候,前端在自己本地跑前端項目然后訪問后台本地跑的項目,出現跨域問題.解決方法如下:springboot項目里增加一個配置類

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 ***
 * @ClassName CorsConfig
 * @Description 跨域處理
 * @create ***
 * @desc ***
 **/

@Configuration
public class CorsConfig {
    private CorsConfiguration buildConfig(){
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.addAllowedOrigin("*"); //允許任何域名使用
        corsConfiguration.addAllowedHeader("*"); //允許任何頭
        corsConfiguration.addAllowedMethod("*"); //允許任何請求方法（post、get等）
        return  corsConfiguration;
    }

@Bean
    public CorsFilter corsFilter(){

        UrlBasedCorsConfigurationSource source = new  UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**",buildConfig());
        return new CorsFilter(source);
    }
}

也可以參靠這篇:

https://www.jianshu.com/p/bf185ea791a7