跨域配置 换一种写法

src/main/java/com/xlht/xlhtproject/CorsConfig.java

@@ -1,13 +1,18 @@
 package com.xlht.xlhtproject;
 
+import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
-import org.springframework.web.servlet.config.annotation.CorsRegistry;
+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.WebMvcConfigurer;
 
+import java.util.Collections;
+
 @Configuration
 public class CorsConfig implements WebMvcConfigurer {
 
-    @Override
+    /*@Override
     public void addCorsMappings(CorsRegistry registry) {
         // 添加映射路径，"/**"表示对所有的路径都进行跨域处理
         registry.addMapping("/**")
@@ -18,5 +23,22 @@ public class CorsConfig implements WebMvcConfigurer {
                 .allowedHeaders("*") // 允许所有的头部
                 .allowCredentials(true) // 允许发送Cookie
                 .maxAge(3600); // 预检请求的缓存时间，单位为秒
+    }*/
+
+    @Bean
+    public CorsFilter corsFilter() {
+        CorsConfiguration corsConfiguration = new CorsConfiguration();
+        //1.允许任何来源
+        corsConfiguration.setAllowedOriginPatterns(Collections.singletonList("*"));
+        //2.允许任何请求头
+        corsConfiguration.addAllowedHeader(CorsConfiguration.ALL);
+        //3.允许任何方法
+        corsConfiguration.addAllowedMethod(CorsConfiguration.ALL);
+        //4.允许凭证
+        corsConfiguration.setAllowCredentials(true);
+
+        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
+        source.registerCorsConfiguration("/**", corsConfiguration);
+        return new CorsFilter(source);
     }
 }