SpringBoot跨域代码两种方式

package com.lp.other;
 
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
/**
 * @author liu pei
 * @version 1.0.0
 * @ClassName WebCrosConfig.java
 * @Description TODO
 * @createTime 2023年10月10日 16:23:00
 */
@Primary
@Configuration
public class WebCrosConfig {
 
    private CorsConfiguration buildConfig() {
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.addAllowedOrigin("*"); // 1 允许任何域名使用
        corsConfiguration.addAllowedHeader("*"); // 2 允许任何头
        corsConfiguration.addAllowedMethod("*"); // 3 允许任何方法（post、get等）
        return corsConfiguration;
    }
 
    @Bean
    public CorsFilter corsFilter() {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", buildConfig()); // 4
        return new CorsFilter(source);
    }
}

package com.lp.other;
 
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
/**
 * @author liu pei
 * @version 1.0.0
 * @ClassName WebCrosConfig.java
 * @Description TODO
 * @createTime 2023年10月10日 16:23:00
 */
@Primary
@Configuration
public class WebCrosConfig {
 
    @Bean
    public CorsFilter corsFilter() {
        //1.添加CORS配置信息
        CorsConfiguration config = new CorsConfiguration();
        //放行哪些原始域
        config.addAllowedOrigin("*");
        //是否发送Cookie信息
        config.setAllowCredentials(true);
        //放行哪些原始域(请求方式)
        config.addAllowedMethod("*");
        //放行哪些原始域(头部信息)
        config.addAllowedHeader("*");
        //暴露哪些头部信息（因为跨域访问默认不能获取全部头部信息）
        config.addExposedHeader("content-type");
 
        //2.添加映射路径
        UrlBasedCorsConfigurationSource configSource = new UrlBasedCorsConfigurationSource();
        configSource.registerCorsConfiguration("/**", config);
 
        //3.返回新的CorsFilter.
        return new CorsFilter(configSource);
    }
}