springboot解决跨域

 

新建config包

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 {

    // 当前跨域请求最大有效时长。这里默认1天
    private static final long MAX_AGE = 24 * 60 * 60;

    @Bean
    public CorsFilter corsFilter() {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.addAllowedOrigin("http://localhost:8080"); // 1 设置访问源地址
        corsConfiguration.addAllowedHeader("*"); // 2 设置访问源请求头
        corsConfiguration.addAllowedMethod("*"); // 3 设置访问源请求方法
        corsConfiguration.setMaxAge(MAX_AGE);
        source.registerCorsConfiguration("/**", corsConfiguration); // 4 对接口配置跨域设置
        return new CorsFilter(source);
    }
}

 

在建文件复制进去即可

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 {

    // 当前跨域请求最大有效时长。这里默认1天

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

    @Bean

    public CorsFilter corsFilter() {

        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();

        CorsConfiguration corsConfiguration = new CorsConfiguration();

        corsConfiguration.addAllowedOrigin("http://localhost:8080"); // 1 设置访问源地址

        corsConfiguration.addAllowedHeader("*"); // 2 设置访问源请求头

        corsConfiguration.addAllowedMethod("*"); // 3 设置访问源请求方法

        corsConfiguration.setMaxAge(MAX_AGE);

        source.registerCorsConfiguration("/**", corsConfiguration); // 4 对接口配置跨域设置

        return new CorsFilter(source);

    }

}

重启前后端服务之后就不会报错