java处理跨域问题

1.CORSFilter

/**
 * 描述：
 * 跨域处理，依赖servlet api和spring-web
 * @author lcf 2018/4/14
 */
public class CORSFilter extends OncePerRequestFilter {

    private final static Logger log = LoggerFactory.getLogger(CORSFilter.class);

    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws
            ServletException, IOException {
        response.addHeader("Access-Control-Allow-Origin", "*");
        response.addHeader("Access-Control-Allow-Headers", "X-Requested-With,X_Requested_With");
        if(request.getHeader("Access-Control-Request-Method") != null && "OPTIONS".equals(request.getMethod())) {
            response.addHeader("Access-Control-Allow-Methods", "HEAD,GET,POST,PUT,DELETE,OPTIONS");
            response.addHeader("Access-Control-Allow-Headers", "Content-Type,Origin,Accept");
            response.addHeader("Access-Control-Max-Age", "120");
        }

        filterChain.doFilter(request, response);
    }
}

2.FilterConfig

/**
 * Filter配置
 *
 * @author LingDu
 * @version 1.0
 */
@Configuration
public class FilterConfig {

    //跨域filter
    @Bean
    public FilterRegistrationBean CORSFilter(){
        FilterRegistrationBean registrationBean = new FilterRegistrationBean();

        CORSFilter filter = new CORSFilter();
        registrationBean.setFilter(filter);

        registrationBean.setUrlPatterns(Arrays.asList(new String[]{"/*"}));

        return registrationBean;
    }

    //shiroFilter
    @Bean
    public FilterRegistrationBean<DelegatingFilterProxy> shiroFilterRegistration() {
        FilterRegistrationBean<DelegatingFilterProxy> registration = new FilterRegistrationBean<>();
        registration.setFilter(new DelegatingFilterProxy("shiroFilter"));
        //该值缺省为false，表示生命周期由SpringApplicationContext管理，设置为true则表示由ServletContainer管理
        registration.addInitParameter("targetFilterLifecycle", "true");
        registration.setEnabled(true);
        registration.setOrder(Integer.MAX_VALUE - 1);
        registration.addUrlPatterns("/*");
        return registration;
    }

}