Spring boot拦截器实现IP黑名单的完整步骤

@Order(0)
@Aspect
@Component
public class AopInterceptor {


 /**
  * 定义拦截器规则
  */
 @Pointcut("execution(* com.test.test.api.controller.test.test.*(..))")
 public void pointCut() {
 }

  /**
  * 拦截器具体实现
  *
  * @throws Throwable
  */
 @Around(value = "pointCut()")
 public Object around(ProceedingJoinPoint point) throws Throwable {
  try {

   HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
   //判断是否为黑名单用户
   String ip = getIpAddress(request);
   if (checkIpBlack(ip)) {
    //ip在黑名单中返回false
    //return false;
    DefaultResponse defaultResponse = new DefaultResponse();
    defaultResponse.setCode(-1);
    defaultResponse.setMessage("ip在黑名单中，拒绝访问.");
    SysLogHelper.log("IpBlackAopInterceptor", "当前请求ip" + ip, "ip在黑名单中，拒绝访问");
    return defaultResponse;
   } else {
    //ip不在黑名单中返回true
    SysLogHelper.log("IpBlackAopInterceptor", "当前请求ip" + ip, "ip正常，允许访问");
    return point.proceed();
   }


  } catch (Exception e) {
   e.printStackTrace();
   SysLogHelper.error("IpBlackAopInterceptor黑名单拦截异常：", ExceptionUtils.getMessage(e) + "详细" + ExceptionUtils.getStackTrace(e), null);
  }
  return point.getArgs();
 }

 //对比当前请求IP是否在黑名单中，注意（对比黑名单ip存放在redis中）
 public boolean checkIpBlack(String ip) throws Exception {
  IpBlackBody body = new IpBlackBody();
  body = cacheHelper.get("IpBlack:ips", IpBlackBody.class);
  if (body != null) {
   for (int i = 0; i < body.getIp().length; i++) {
    if (body.getIp()[i].equals(ip))
     return true;
   }
  }
  return false;
 }

}

 public final static String getIpAddress(HttpServletRequest request)
   throws IOException {
  // 获取请求主机IP地址,如果通过代理进来，则透过防火墙获取真实IP地址

  String ip = request.getHeader("x-forwarded-for");

  if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
   if (ip == null || ip.length() == 0
     || "unknown".equalsIgnoreCase(ip)) {
    ip = request.getHeader("Proxy-Client-IP");
   }
   if (ip == null || ip.length() == 0
     || "unknown".equalsIgnoreCase(ip)) {
    ip = request.getHeader("WL-Proxy-Client-IP");
   }
   if (ip == null || ip.length() == 0
     || "unknown".equalsIgnoreCase(ip)) {
    ip = request.getHeader("HTTP_CLIENT_IP");
   }
   if (ip == null || ip.length() == 0
     || "unknown".equalsIgnoreCase(ip)) {
    ip = request.getHeader("HTTP_X_FORWARDED_FOR");
   }
   if (ip == null || ip.length() == 0
     || "unknown".equalsIgnoreCase(ip)) {
    ip = request.getRemoteAddr();
   }
  } else if (ip.length() > 15) {
   String[] ips = ip.split(",");
   for (int index = 0; index < ips.length; index++) {
    String strIp = (String) ips[index];
    if (!("unknown".equalsIgnoreCase(strIp))) {
     ip = strIp;
     break;
    }
   }
  }

  return ip;
 }

@RestController
public class IpBlackController {

 @Autowired(required = false)
 private CacheHelper cacheHelper;

 @PostMapping("/testIpBlack")
 public IpBlackBody IpBlack(@RequestBody IpBlackBody ipBlackBody) throws Exception {

  IpBlackBody body = new IpBlackBody();
  body = cacheHelper.get("IpBlack:ips", IpBlackBody.class);

  if (body != null) {
   //拼接当前IP与redis中现有ip
   linkArray(body.getIp(), ipBlackBody.getIp());
   //将数据赋给body
   body.setIp(linkArray(body.getIp(), ipBlackBody.getIp()));
   //setex中第二个参数时间为S，根据业务场景相应调整，此处我设置为一天
   //将body中拼接后的ip地址数据写入redis中
   cacheHelper.setex("IpBlack:ips", 86400, body);

  } else {
   cacheHelper.setex("IpBlack:ips", 86400, ipBlackBody);
   body = cacheHelper.get("IpBlack:ips", IpBlackBody.class);
   return body;
  }
  return body;
 }

 //拼接两个String[]的方法
 public static String[] linkArray(String[] array1, String[] array2) {

  List<String> list = new ArrayList<>();
  if (array1 == null) {
   return array2;
  }
  if (array2 == null) {
   return array1;
  }
  for (int i = 0; i < array1.length; i++) {
   list.add(array1[i]);
  }
  for (int i = 0; i < array2.length; i++) {
   list.add(array2[i]);
  }
  String[] returnValue = new String[list.size()];
  for (int i = 0; i < list.size(); i++) {

   returnValue[i] = list.get(i);
  }
  return returnValue;
 }
}