springboot处理跨域问题

新建CorsConfig类,代码如下

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.reactive.CorsWebFilter;
import org.springframework.web.cors.reactive.UrlBasedCorsConfigurationSource;
import org.springframework.web.util.pattern.PathPatternParser;

@Configuration
public class CorsConfig {
    // 添加过滤器
    @Bean
    public CorsWebFilter corsWebFilter() {
        // 基于url跨域，选择reactive包下的
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource(new PathPatternParser());
        // 跨域配置信息
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        // 允许跨域的头
        corsConfiguration.addAllowedHeader("*");
        // 允许跨域的请求方式
        corsConfiguration.addAllowedMethod("*");
        // 允许跨域的请求来源
        corsConfiguration.addAllowedOrigin("*");
        // 是否允许携带cookie跨域
        //corsConfiguration.setAllowCredentials(true);

        // 任意url都要进行跨域配置
        source.registerCorsConfiguration("/**", corsConfiguration);
        return new CorsWebFilter(source);
    }
}