JAVA通过Filter实现允许服务跨域请求的方法

public class CrossFilter implements Filter {
  protected Logger logger = LoggerFactory.getLogger(getClass());
  @Override
  public void init(FilterConfig filterConfig) throws ServletException {
  }
  @Override
  public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
    HttpServletRequest request=(HttpServletRequest)servletRequest;
    HttpServletResponse response=(HttpServletResponse)servletResponse;
    logger.info(\"【允许跨域访问】refererUrl【{}】\", request.getHeader(\"Referer\"));
    //允许跨域访问
    response.setContentType(\"text/html;charset=UTF-8\");
    response.setHeader(\"Access-Control-Allow-Origin\", \"https://monline.01zhuanche.com\");
    response.setHeader(\"Access-Control-Allow-Methods\", \"POST, GET, OPTIONS, DELETE\");
    response.setHeader(\"Access-Control-Max-Age\", \"0\");
    response.setHeader(\"Access-Control-Allow-Headers\", \"Origin, No-Cache, X-Requested-With, If-Modified-Since, Pragma, Last-Modified, Cache-Control, Expires, Content-Type, X-E4M-With,userId,Authorization,SessionToken,JSESSIONID,token\");
    response.setHeader(\"Access-Control-Allow-Credentials\", \"true\");
    response.setHeader(\"XDomainRequestAllowed\",\"1\");
    filterChain.doFilter(request, response);
  }
  public static String getRefererUrl(HttpServletRequest request){
    String returnValue = null;
    if(request != null && !StringUtils.isEmpty(request.getHeader(\"Referer\"))) {
      returnValue = request.getHeader(\"Referer\");
      String[] urls = returnValue.split(\"/\");
      if(urls != null && urls.length > 3) {
        returnValue = urls[0] + \"//\" + urls[2];
      }
    }
    return returnValue;
  }
  @Override
  public void destroy() {
  }
}

<filter>
  <filter-name>crossDomainFilter</filter-name>
  <filter-class>com.open.advertise.api.cooperation.filter.CrossFilter</filter-class>
  <init-param>
   <param-name>targetFilterLifecycle</param-name>
   <param-value>true</param-value>
  </init-param>
 </filter>

 <filter-mapping>
  <filter-name>crossDomainFilter</filter-name>
  <url-pattern>/*</url-pattern> <!--可以针对某个接口进行限制-->
 </filter-mapping>