基于SpringBoot后端解决跨域问题

• ①基于方法的跨域解决方案加@CrossOrigin注解

  •   @GetMapping("/test")
      @CrossOrigin
      public list<User> getUser(){
          return userService.list();
      }
    

• ②基于过滤器的方式统一解决跨域问题

  •   @Configuration
      public class CrosConf{
          @Bean
          public CorsFilter corsFilter(){
              CorsConfiguration corsConfiguration=new CorsConfiguration();
              corsConfiguration.addAllowedOrigin("*");
              corsConfiguration.addAllowedHeader("*");
              corsConfiguration.addAllowedMethod("*");
              UrlBasedCorsConfigurationSource source=new UrlBasedCorsConfigurationSource();
              source.registerCorsConfiguration("/**",corsConfiguration);
              return new CorsFilter(source);
          }
      }
    

• ③重写addCorsMappings方法解决跨域问题

  •   @Configuration
      public class CorsConf implements WebMvcConfigurer{
          @Override
          public void addCorsMappings (CorsRegistry registry){
              registry.addMapping("/**")
                      .allowedOriginPatterns("*")
                      .allowedMethods("GET","PUT","POST","DELETE","HEAD","OPTIONS")
                      .allowCredentials(true)
                      .maxAge(3600)
                      .allowedHeaders("*");
          }
      }