add: 修复用户锁定bug

@@ -26,6 +26,7 @@ import io.swagger.annotations.ApiImplicitParam;
 import io.swagger.annotations.ApiImplicitParams;
 import io.swagger.annotations.ApiOperation;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang.StringUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Bean;
 import org.springframework.security.core.context.SecurityContextHolder;
@@ -105,7 +106,9 @@ public class UserController {
         //删除用户token缓存 及时生效锁定账号
         if (i>0){
             String userTokenStr = redisUtils.get(KakoUser.TOKEN_KEY + user.getLoginName());
-            redisUtils.del(userTokenStr);
+            if (StringUtils.isNotEmpty(userTokenStr)){
+                redisUtils.del(userTokenStr);
+            }
         }
         return i==1 ? new ResultJson("200","success") :new ResultJson("500","lock user faild");