详解springboot设置cors跨域请求的两种方式

public class CorsFilter extends OncePerRequestFilter {

  static final String ORIGIN = \"Origin\";

  protected void doFilterInternal(
    HttpServletRequest request, 
    HttpServletResponse response, 
    FilterChain filterChain) throws ServletException, IOException {
  
    String origin = request.getHeader(ORIGIN);
  
    response.setHeader(\"Access-Control-Allow-Origin\", \"*\");//* or origin as u prefer
    response.setHeader(\"Access-Control-Allow-Credentials\", \"true\");
    response.setHeader(\"Access-Control-Allow-Methods\", \"PUT, POST, GET, OPTIONS, DELETE\");
    response.setHeader(\"Access-Control-Max-Age\", \"3600\");
    response.setHeader(\"Access-Control-Allow-Headers\", \"content-type, authorization\");
  
    if (request.getMethod().equals(\"OPTIONS\"))
      response.setStatus(HttpServletResponse.SC_OK);
    else 
      filterChain.doFilter(request, response);
  
  }
}
@Bean
public CorsFilter corsFilter() throws Exception {
  return new CorsFilter();
}

http
  .addFilterBefore(corsFilter(), UsernamePasswordAuthenticationFilter.class)
  .addFilterBefore(authenticationTokenFilterBean(), UsernamePasswordAuthenticationFilter.class)
  .headers()
  .cacheControl();

@Configuration
public class CorsConfig {
  @Bean
  public FilterRegistrationBean corsFilter() {
    Url dCorsConfigurationSource source = new Url dCorsConfigurationSource();
    CorsConfiguration config = new CorsConfiguration();
    config.setAllowCredentials(true);
    // 设置你要允许的网站域名，如果全允许则设为 *
    config.addAllowedOrigin(\"http://localhost:4200\");
    // 如果要限制 HEADER 或 METHOD 请自行更改
    config.addAllowedHeader(\"*\");
    config.addAllowedMethod(\"*\");
    source.registerCorsConfiguration(\"/**\", config);
    FilterRegistrationBean bean = new FilterRegistrationBean(new CorsFilter(source));
    // 这个顺序很重要哦，为避免麻烦请设置在最前
    bean.setOrder(0);
    return bean;
  }
}