添加项目文件。

GroupService.WebApi/Application/Dtos/GroupInvitationResponse.cs

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+using GroupService.Domain.Enums;
+
+namespace GroupService.WebApi.Application.Dtos
+{
+    public class GroupInvitationResponse
+    {
+        public Guid Id { get; private set; }
+        /// <summary>
+        /// 群聊编号
+        /// </summary>
+        public Guid GroupId { get; private set; }
+        public string GroupAvatar { get; private set; }
+        public string GroupName { get; private set; }
+
+        /// <summary>
+        /// 被邀请用户
+        /// </summary>
+        public Guid UserId { get; private set; }
+        public string? UserAvatar { get; private set; }
+        public string UserNickName { get; private set; }
+
+        /// <summary>
+        /// 邀请用户
+        /// </summary>
+        public Guid OperatorId { get; private set; }
+        public string OperatorName { get; private set; }
+        public string? OperatorAvatar { get; private set; }
+
+        /// <summary>
+        /// 当前状态(0:待被邀请人同意
+        /// 1:被邀请人已同意)
+        /// </summary>
+        public GroupInvitationState State { get; private set; }
+        public DateTimeOffset Created { get; private set; }
+        public DateTimeOffset Updated { get; private set; }
+    }
+}

GroupService.WebApi/Application/Dtos/GroupMemberResponse.cs

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+using GroupService.Domain.Enums;
+
+namespace GroupService.WebApi.Application.Dtos
+{
+    public class GroupMemberResponse
+    {
+        public Guid Id { get; private set; }
+        /// <summary>
+        /// 用户编号
+        /// </summary>
+        public Guid UserId { get; private set; }
+        public string GroupNickName { get; private set; }
+        public string? Avatar { get; private set; }
+
+        /// <summary>
+        /// 群聊编号
+        /// </summary>
+        public Guid GroupId { get; private set; }
+
+        /// <summary>
+        /// 成员角色（0:普通成员,1:管理员,2:群主）
+        /// </summary>
+        public GroupMemberRole Role { get; private set; }
+        public DateTimeOffset Created { get; private set; }
+    }
+}

GroupService.WebApi/Application/Dtos/GroupRequestResponse.cs

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+using GroupService.Domain.Enums;
+
+namespace GroupService.WebApi.Application.Dtos
+{
+    public class GroupRequestResponse
+    {
+        public Guid Id { get; private set; }
+        /// <summary>
+        /// 群聊编号
+        /// 
+        /// </summary>
+        public Guid GroupId { get; private set; }
+        public string GroupAvatar { get; private set; }
+        public string GroupName { get; private set; }
+
+        /// <summary>
+        /// 申请人	
+        /// </summary>
+        public Guid UserId { get; private set; }
+        public string? UserAvatar { get; private set; }
+        public string UserNickName { get; private set; }
+        public Guid OperatorId { get; private set; }
+        public string OperatorName { get; private set; }
+        public string? OperatorAvatar { get; private set; }
+
+        /// <summary>
+        /// 申请状态（0:待管理员同意,1:已拒绝,2：已同意）
+        /// </summary>
+        public GroupJoinRequestState State { get; private set; }
+
+        /// <summary>
+        /// 入群附言
+        /// </summary>
+        public string Description { get; private set; }
+        public DateTimeOffset Created { get; private set; }
+        public DateTimeOffset Updated { get; private set; }
+    }
+}

GroupService.WebApi/Application/Dtos/GroupResponse.cs

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+using GroupService.Domain.Enums;
+
+namespace GroupService.WebApi.Application.Dtos
+{
+    public class GroupResponse
+    {
+        public Guid Id { get; private set; }
+        public string Name { get; private set; }
+        /// <summary>
+        /// 群主
+        /// </summary>
+        public Guid GroupMaster { get; private set; }
+
+        /// <summary>
+        /// 群权限
+        /// （0：需管理员同意,1：任意人可加群,2：不允许任何人加入）
+        /// </summary>
+        public GroupAuthorityType Authority { get; private set; }
+        /// <summary>
+        /// 全员禁言（false允许发言，true全员禁言）
+        /// </summary>
+        public bool AllMembersBanned { get; private set; }
+        /// <summary>
+        /// 群聊状态
+        /// (1：正常,2：封禁)
+        /// </summary>
+        public GroupState Status { get; private set; }
+
+        /// <summary>
+        /// 群公告
+        /// </summary>
+        public string Announcement { get; private set; }
+
+        /// <summary>
+        /// 群头像
+        /// </summary>
+        public string? Avatar { get; private set; }
+        public long MaxSequenceId { get; private set; }
+        public string LastMessage { get; private set; }
+        public string LastSenderName { get; private set; }
+        public DateTimeOffset Created { get; private set; }
+        public DateTimeOffset Updated { get; private set; }
+    }
+
+}

GroupService.WebApi/Application/Dtos/UserInfoDto.cs

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+namespace GroupService.WebApi.Application.Dtos
+{
+    public class UserInfoDto
+    {
+        public Guid Id { get; set; }
+        public string UserName { get; set; }
+        public string NickName { get; set; }
+        public string? Email { get; set; }
+        public string? Phone { get; set; }
+        public string Region { get; set; }
+        public string Description { get; set; }
+        public string? Avatar { get; set; }
+        public DateTimeOffset CreationTime { get; set; }
+        public DateTimeOffset? Deletion { get; set; }
+    }
+}