apollo-common/src/main/java/com/ctrip/framework/apollo/common/controller/CharacterEncodingFilterConfiguration.java/CharacterEncodingFilterConfiguration/encodingFilter
class CharacterEncodingFilterConfiguration:  @Bean
  public FilterRegistrationBean encodingFilter() {
    FilterRegistrationBean bean = new FilterRegistrationBean();
    bean.setFilter(new CharacterEncodingFilter());
    bean.addInitParameter("encoding", "UTF-8");
    //FIXME: https://github.com/Netflix/eureka/issues/702
//    bean.addInitParameter("forceEncoding", "true");
    bean.setName("encodingFilter");
    bean.addUrlPatterns("/*");
    bean.setDispatcherTypes(DispatcherType.REQUEST, DispatcherType.FORWARD);
    return bean;
  }