feat(user): 新增根据用户ID查询用户信息接口

- 新增 FindUserByIdReqDTO 请求参数类
- 新增 FindUserByIdRspDTO 响应结果类
- 在 UserController 中添加 findById 接口
- 在 UserService 中定义 findById 方法
- 在 UserServiceImpl 中实现 findById 逻辑
- 支持根据用户 ID 查询用户昵称和头像信息
- 添加用户不存在时的异常处理逻辑

han-note-gateway/src/main/resources/application.yml

@@ -16,6 +16,12 @@ spring:
             - Path=/user/**
           filters:
             - StripPrefix=1
+        - id: note
+          uri: lb://han-note-note
+          predicates:
+            - Path=/note/**
+          filters:
+            - StripPrefix=1
   data:
     redis:
       database: 5 # Redis 数据库索引（默认为 0）

han-note-kv/han-note-kv-api/src/main/java/com/hanserwei/hannote/kv/api/KeyValueFeignApi.java

@@ -3,6 +3,7 @@ package com.hanserwei.hannote.kv.api;
 import com.hanserwei.framework.common.response.Response;
 import com.hanserwei.hannote.kv.constant.ApiConstants;
 import com.hanserwei.hannote.kv.dto.req.AddNoteContentReqDTO;
+import com.hanserwei.hannote.kv.dto.req.DeleteNoteContentReqDTO;
 import org.springframework.cloud.openfeign.FeignClient;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
@@ -19,6 +20,6 @@ public interface KeyValueFeignApi {
     Response<?> findNoteContent(@RequestBody AddNoteContentReqDTO addNoteContentReqDTO);
 
     @PostMapping(value = PREFIX + "/note/content/delete")
-    Response<?> deleteNoteContent(@RequestBody AddNoteContentReqDTO addNoteContentReqDTO);
+    Response<?> deleteNoteContent(@RequestBody DeleteNoteContentReqDTO deleteNoteContentReqDTO);
 
 }

han-note-kv/han-note-kv-api/src/main/java/com/hanserwei/hannote/kv/dto/req/AddNoteContentReqDTO.java

@@ -13,8 +13,8 @@ import lombok.NoArgsConstructor;
 @Builder
 public class AddNoteContentReqDTO {
 
-    @NotNull(message = "笔记 ID 不能为空")
-    private Long noteId;
+    @NotNull(message = "笔记内容 UUID 不能为空")
+    private String uuid;
 
     @NotBlank(message = "笔记内容不能为空")
     private String content;

han-note-kv/han-note-kv-api/src/main/java/com/hanserwei/hannote/kv/dto/req/DeleteNoteContentReqDTO.java

@@ -12,7 +12,7 @@ import lombok.NoArgsConstructor;
 @Builder
 public class DeleteNoteContentReqDTO {
 
-    @NotBlank(message = "笔记 ID 不能为空")
-    private String noteId;
+    @NotBlank(message = "笔记 UUID 不能为空")
+    private String uuid;
 
 }

han-note-kv/han-note-kv-api/src/main/java/com/hanserwei/hannote/kv/dto/req/FindNoteContentReqDTO.java

@@ -12,7 +12,7 @@ import lombok.NoArgsConstructor;
 @Builder
 public class FindNoteContentReqDTO {
 
-    @NotBlank(message = "笔记 ID 不能为空")
-    private String noteId;
+    @NotBlank(message = "笔记 UUID 不能为空")
+    private String uuid;
 
 }

han-note-kv/han-note-kv-biz/src/main/java/com/hanserwei/hannote/kv/biz/service/impl/NoteContentServiceImpl.java

@@ -27,12 +27,12 @@ public class NoteContentServiceImpl implements NoteContentService {
     @Override
     public Response<?> addNoteContent(AddNoteContentReqDTO addNoteContentReqDTO) {
         // 笔记ID
-        Long noteId = addNoteContentReqDTO.getNoteId();
+        String noteId = addNoteContentReqDTO.getUuid();
         // 笔记内容
         String content = addNoteContentReqDTO.getContent();
 
         NoteContentDO noteContent = NoteContentDO.builder()
-                .id(UUID.randomUUID())
+                .id(UUID.fromString(noteId))
                 .content(content)
                 .build();
 
@@ -44,7 +44,7 @@ public class NoteContentServiceImpl implements NoteContentService {
     @Override
     public Response<FindNoteContentRspDTO> findNoteContent(FindNoteContentReqDTO findNoteContentReqDTO) {
         // 笔记ID
-        String noteId = findNoteContentReqDTO.getNoteId();
+        String noteId = findNoteContentReqDTO.getUuid();
         Optional<NoteContentDO> optional = noteContentRepository.findById(UUID.fromString(noteId));
         if (optional.isEmpty()){
             throw new ApiException(ResponseCodeEnum.NOTE_CONTENT_NOT_FOUND);
@@ -60,7 +60,7 @@ public class NoteContentServiceImpl implements NoteContentService {
 
     @Override
     public Response<?> deleteNoteContent(DeleteNoteContentReqDTO deleteNoteContentReqDTO) {
-        String noteId = deleteNoteContentReqDTO.getNoteId();
+        String noteId = deleteNoteContentReqDTO.getUuid();
         noteContentRepository.deleteById(UUID.fromString(noteId));
         return Response.success();
     }

han-note-note/han-note-note-biz/pom.xml

@@ -91,6 +91,15 @@
             <artifactId>commons-pool2</artifactId>
         </dependency>
 
+        <dependency>
+            <groupId>com.hanserwei</groupId>
+            <artifactId>han-note-kv-api</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>com.hanserwei</groupId>
+            <artifactId>han-note-distributed-id-generator-api</artifactId>
+        </dependency>
     </dependencies>
 
 

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/HannoteNoteBizApplication.java

@@ -1,9 +1,13 @@
 package com.hanserwei.hannote.note.biz;
 
+import org.mybatis.spring.annotation.MapperScan;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.openfeign.EnableFeignClients;
 
 @SpringBootApplication
+@MapperScan("com.hanserwei.hannote.note.biz.domain.mapper")
+@EnableFeignClients(basePackages = "com.hanserwei.hannote")
 public class HannoteNoteBizApplication {
     public static void main(String[] args) {
         SpringApplication.run(HannoteNoteBizApplication.class, args);

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/controller/NoteController.java

@@ -0,0 +1,29 @@
+package com.hanserwei.hannote.note.biz.controller;
+
+import com.hanserwei.framework.biz.operationlog.aspect.ApiOperationLog;
+import com.hanserwei.framework.common.response.Response;
+import com.hanserwei.hannote.note.biz.model.vo.PublishNoteReqVO;
+import com.hanserwei.hannote.note.biz.service.NoteService;
+import jakarta.annotation.Resource;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/note")
+@Slf4j
+public class NoteController {
+
+    @Resource
+    private NoteService noteService;
+
+    @PostMapping(value = "/publish")
+    @ApiOperationLog(description = "笔记发布")
+    public Response<?> publishNote(@Validated @RequestBody PublishNoteReqVO publishNoteReqVO) {
+        return noteService.publishNote(publishNoteReqVO);
+    }
+
+}

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/domain/dataobject/ChannelDO.java

@@ -4,15 +4,18 @@ import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableField;
 import com.baomidou.mybatisplus.annotation.TableId;
 import com.baomidou.mybatisplus.annotation.TableName;
-import java.util.Date;
 import lombok.AllArgsConstructor;
+import lombok.Builder;
 import lombok.Data;
 import lombok.NoArgsConstructor;
 
+import java.time.LocalDateTime;
+
 /**
  * 频道表
  */
 @Data
+@Builder
 @AllArgsConstructor
 @NoArgsConstructor
 @TableName(value = "t_channel")
@@ -33,13 +36,13 @@ public class ChannelDO {
      * 创建时间
      */
     @TableField(value = "create_time")
-    private Date createTime;
+    private LocalDateTime createTime;
 
     /**
      * 更新时间
      */
     @TableField(value = "update_time")
-    private Date updateTime;
+    private LocalDateTime updateTime;
 
     /**
      * 逻辑删除(0：未删除 1：已删除)

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/domain/dataobject/ChannelTopicRelDO.java

@@ -4,15 +4,18 @@ import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableField;
 import com.baomidou.mybatisplus.annotation.TableId;
 import com.baomidou.mybatisplus.annotation.TableName;
-import java.util.Date;
 import lombok.AllArgsConstructor;
+import lombok.Builder;
 import lombok.Data;
 import lombok.NoArgsConstructor;
 
+import java.time.LocalDateTime;
+
 /**
  * 频道-话题关联表
  */
 @Data
+@Builder
 @AllArgsConstructor
 @NoArgsConstructor
 @TableName(value = "t_channel_topic_rel")
@@ -39,11 +42,11 @@ public class ChannelTopicRelDO {
      * 创建时间
      */
     @TableField(value = "create_time")
-    private Date createTime;
+    private LocalDateTime createTime;
 
     /**
      * 更新时间
      */
     @TableField(value = "update_time")
-    private Date updateTime;
+    private LocalDateTime updateTime;
 }

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/domain/dataobject/NoteDO.java

@@ -4,15 +4,18 @@ import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableField;
 import com.baomidou.mybatisplus.annotation.TableId;
 import com.baomidou.mybatisplus.annotation.TableName;
-import java.util.Date;
 import lombok.AllArgsConstructor;
+import lombok.Builder;
 import lombok.Data;
 import lombok.NoArgsConstructor;
 
+import java.time.LocalDateTime;
+
 /**
  * 笔记表
  */
 @Data
+@Builder
 @AllArgsConstructor
 @NoArgsConstructor
 @TableName(value = "t_note")
@@ -63,7 +66,7 @@ public class NoteDO {
      * 类型(0：图文 1：视频)
      */
     @TableField(value = "`type`")
-    private Byte type;
+    private Integer type;
 
     /**
      * 笔记图片链接(逗号隔开)
@@ -81,23 +84,29 @@ public class NoteDO {
      * 可见范围(0：公开,所有人可见 1：仅对自己可见)
      */
     @TableField(value = "visible")
-    private Byte visible;
+    private Integer visible;
 
     /**
      * 创建时间
      */
     @TableField(value = "create_time")
-    private Date createTime;
+    private LocalDateTime createTime;
 
     /**
      * 更新时间
      */
     @TableField(value = "update_time")
-    private Date updateTime;
+    private LocalDateTime updateTime;
 
     /**
      * 状态(0：待审核 1：正常展示 2：被删除(逻辑删除) 3：被下架)
      */
     @TableField(value = "`status`")
-    private Byte status;
+    private Integer status;
+
+    /**
+     * 笔记内容UUID
+     */
+    @TableField(value = "content_uuid")
+    private String contentUuid;
 }

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/domain/dataobject/TopicDO.java

@@ -4,15 +4,18 @@ import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableField;
 import com.baomidou.mybatisplus.annotation.TableId;
 import com.baomidou.mybatisplus.annotation.TableName;
-import java.util.Date;
 import lombok.AllArgsConstructor;
+import lombok.Builder;
 import lombok.Data;
 import lombok.NoArgsConstructor;
 
+import java.time.LocalDateTime;
+
 /**
  * 话题表
  */
 @Data
+@Builder
 @AllArgsConstructor
 @NoArgsConstructor
 @TableName(value = "t_topic")
@@ -33,13 +36,13 @@ public class TopicDO {
      * 创建时间
      */
     @TableField(value = "create_time")
-    private Date createTime;
+    private LocalDateTime createTime;
 
     /**
      * 更新时间
      */
     @TableField(value = "update_time")
-    private Date updateTime;
+    private LocalDateTime updateTime;
 
     /**
      * 逻辑删除(0：未删除 1：已删除)

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/domain/mapper/ChannelDOMapper.java

@@ -2,6 +2,8 @@ package com.hanserwei.hannote.note.biz.domain.mapper;
 
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.hanserwei.hannote.note.biz.domain.dataobject.ChannelDO;
+import org.apache.ibatis.annotations.Mapper;
 
+@Mapper
 public interface ChannelDOMapper extends BaseMapper<ChannelDO> {
 }

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/domain/mapper/ChannelTopicRelDOMapper.java

@@ -2,6 +2,8 @@ package com.hanserwei.hannote.note.biz.domain.mapper;
 
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.hanserwei.hannote.note.biz.domain.dataobject.ChannelTopicRelDO;
+import org.apache.ibatis.annotations.Mapper;
 
+@Mapper
 public interface ChannelTopicRelDOMapper extends BaseMapper<ChannelTopicRelDO> {
 }

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/domain/mapper/NoteDOMapper.java

@@ -2,6 +2,8 @@ package com.hanserwei.hannote.note.biz.domain.mapper;
 
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.hanserwei.hannote.note.biz.domain.dataobject.NoteDO;
+import org.apache.ibatis.annotations.Mapper;
 
+@Mapper
 public interface NoteDOMapper extends BaseMapper<NoteDO> {
 }

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/domain/mapper/TopicDOMapper.java

@@ -2,6 +2,8 @@ package com.hanserwei.hannote.note.biz.domain.mapper;
 
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.hanserwei.hannote.note.biz.domain.dataobject.TopicDO;
+import org.apache.ibatis.annotations.Mapper;
 
+@Mapper
 public interface TopicDOMapper extends BaseMapper<TopicDO> {
 }

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/enums/ResponseCodeEnum.java

@@ -13,6 +13,8 @@ public enum ResponseCodeEnum implements BaseExceptionInterface {
     PARAM_NOT_VALID("NOTE-10001", "参数错误"),
 
     // ----------- 业务异常状态码 -----------
+    NOTE_TYPE_ERROR("NOTE-20000", "未知的笔记类型"),
+    NOTE_PUBLISH_FAIL("NOTE-20001", "笔记发布失败"),
     ;
 
     // 异常码

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/model/vo/PublishNoteReqVO.java

@@ -0,0 +1,29 @@
+package com.hanserwei.hannote.note.biz.model.vo;
+
+import jakarta.validation.constraints.NotNull;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.List;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+@Builder
+public class PublishNoteReqVO {
+
+    @NotNull(message = "笔记类型不能为空")
+    private Integer type;
+
+    private List<String> imgUris;
+
+    private String videoUri;
+
+    private String title;
+
+    private String content;
+
+    private Long topicId;
+}

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/rpc/DistributedIdGeneratorRpcService.java

@@ -0,0 +1,22 @@
+package com.hanserwei.hannote.note.biz.rpc;
+
+import com.hanserwei.hannote.distributed.id.generator.api.DistributedIdGeneratorFeignApi;
+import jakarta.annotation.Resource;
+import org.springframework.stereotype.Component;
+
+@Component
+public class DistributedIdGeneratorRpcService {
+
+    @Resource
+    private DistributedIdGeneratorFeignApi distributedIdGeneratorFeignApi;
+
+    /**
+     * 生成雪花算法 ID
+     *
+     * @return 雪花算法 ID
+     */
+    public String getSnowflakeId() {
+        return distributedIdGeneratorFeignApi.getSnowflakeId("test");
+    }
+
+}

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/rpc/KeyValueRpcService.java

@@ -0,0 +1,50 @@
+package com.hanserwei.hannote.note.biz.rpc;
+
+import com.hanserwei.framework.common.response.Response;
+import com.hanserwei.hannote.kv.api.KeyValueFeignApi;
+import com.hanserwei.hannote.kv.dto.req.AddNoteContentReqDTO;
+import com.hanserwei.hannote.kv.dto.req.DeleteNoteContentReqDTO;
+import jakarta.annotation.Resource;
+import org.springframework.stereotype.Component;
+
+import java.util.Objects;
+
+@Component
+public class KeyValueRpcService {
+
+    @Resource
+    private KeyValueFeignApi keyValueFeignApi;
+
+    /**
+     * 保存笔记内容
+     *
+     * @param uuid 笔记UUID
+     * @param content 笔记内容
+     * @return 是否成功
+     */
+    public boolean saveNoteContent(String uuid, String content) {
+        AddNoteContentReqDTO addNoteContentReqDTO = new AddNoteContentReqDTO();
+        addNoteContentReqDTO.setUuid(uuid);
+        addNoteContentReqDTO.setContent(content);
+
+        Response<?> response = keyValueFeignApi.addNoteContent(addNoteContentReqDTO);
+
+        return Objects.nonNull(response) && response.isSuccess();
+    }
+
+    /**
+     * 删除笔记内容
+     *
+     * @param uuid 笔记UUID
+     * @return 是否成功
+     */
+    public boolean deleteNoteContent(String uuid) {
+        DeleteNoteContentReqDTO deleteNoteContentReqDTO = new DeleteNoteContentReqDTO();
+        deleteNoteContentReqDTO.setUuid(uuid);
+
+        Response<?> response = keyValueFeignApi.deleteNoteContent(deleteNoteContentReqDTO);
+
+        return Objects.nonNull(response) && response.isSuccess();
+    }
+
+}

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/service/ChannelDOService.java

@@ -0,0 +1,8 @@
+package com.hanserwei.hannote.note.biz.service;
+
+import com.hanserwei.hannote.note.biz.domain.dataobject.ChannelDO;
+import com.baomidou.mybatisplus.extension.service.IService;
+public interface ChannelDOService extends IService<ChannelDO>{
+
+
+}

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/service/ChannelTopicRelDOService.java

@@ -0,0 +1,8 @@
+package com.hanserwei.hannote.note.biz.service;
+
+import com.hanserwei.hannote.note.biz.domain.dataobject.ChannelTopicRelDO;
+import com.baomidou.mybatisplus.extension.service.IService;
+public interface ChannelTopicRelDOService extends IService<ChannelTopicRelDO>{
+
+
+}

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/service/NoteService.java

@@ -0,0 +1,17 @@
+package com.hanserwei.hannote.note.biz.service;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import com.hanserwei.framework.common.response.Response;
+import com.hanserwei.hannote.note.biz.domain.dataobject.NoteDO;
+import com.hanserwei.hannote.note.biz.model.vo.PublishNoteReqVO;
+
+public interface NoteService extends IService<NoteDO> {
+
+    /**
+     * 笔记发布
+     * @param publishNoteReqVO 笔记发布请求
+     * @return 笔记发布结果
+     */
+    Response<?> publishNote(PublishNoteReqVO publishNoteReqVO);
+
+}

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/service/TopicDOService.java

@@ -0,0 +1,8 @@
+package com.hanserwei.hannote.note.biz.service;
+
+import com.hanserwei.hannote.note.biz.domain.dataobject.TopicDO;
+import com.baomidou.mybatisplus.extension.service.IService;
+public interface TopicDOService extends IService<TopicDO>{
+
+
+}

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/service/impl/ChannelDOServiceImpl.java

@@ -0,0 +1,12 @@
+package com.hanserwei.hannote.note.biz.service.impl;
+
+import com.hanserwei.hannote.note.biz.service.ChannelDOService;
+import org.springframework.stereotype.Service;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.hanserwei.hannote.note.biz.domain.dataobject.ChannelDO;
+import com.hanserwei.hannote.note.biz.domain.mapper.ChannelDOMapper;
+
+@Service
+public class ChannelDOServiceImpl extends ServiceImpl<ChannelDOMapper, ChannelDO> implements ChannelDOService {
+
+}

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/service/impl/ChannelTopicRelDOServiceImpl.java

@@ -0,0 +1,12 @@
+package com.hanserwei.hannote.note.biz.service.impl;
+
+import com.hanserwei.hannote.note.biz.service.ChannelTopicRelDOService;
+import org.springframework.stereotype.Service;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.hanserwei.hannote.note.biz.domain.mapper.ChannelTopicRelDOMapper;
+import com.hanserwei.hannote.note.biz.domain.dataobject.ChannelTopicRelDO;
+
+@Service
+public class ChannelTopicRelDOServiceImpl extends ServiceImpl<ChannelTopicRelDOMapper, ChannelTopicRelDO> implements ChannelTopicRelDOService {
+
+}

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/service/impl/NoteServiceImpl.java

@@ -0,0 +1,135 @@
+package com.hanserwei.hannote.note.biz.service.impl;
+
+import cn.hutool.core.collection.CollUtil;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.google.common.base.Preconditions;
+import com.hanserwei.framework.biz.context.holder.LoginUserContextHolder;
+import com.hanserwei.framework.common.exception.ApiException;
+import com.hanserwei.framework.common.response.Response;
+import com.hanserwei.hannote.note.biz.domain.dataobject.NoteDO;
+import com.hanserwei.hannote.note.biz.domain.mapper.NoteDOMapper;
+import com.hanserwei.hannote.note.biz.enums.NoteStatusEnum;
+import com.hanserwei.hannote.note.biz.enums.NoteTypeEnum;
+import com.hanserwei.hannote.note.biz.enums.NoteVisibleEnum;
+import com.hanserwei.hannote.note.biz.enums.ResponseCodeEnum;
+import com.hanserwei.hannote.note.biz.model.vo.PublishNoteReqVO;
+import com.hanserwei.hannote.note.biz.rpc.DistributedIdGeneratorRpcService;
+import com.hanserwei.hannote.note.biz.rpc.KeyValueRpcService;
+import com.hanserwei.hannote.note.biz.service.NoteService;
+import com.hanserwei.hannote.note.biz.service.TopicDOService;
+import jakarta.annotation.Resource;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.stereotype.Service;
+
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.Objects;
+import java.util.UUID;
+
+@Slf4j
+@Service
+public class NoteServiceImpl extends ServiceImpl<NoteDOMapper, NoteDO> implements NoteService {
+    @Resource
+    private DistributedIdGeneratorRpcService distributedIdGeneratorRpcService;
+    @Resource
+    private KeyValueRpcService keyValueRpcService;
+    @Resource
+    private TopicDOService topicDOService;
+
+    @Override
+    public Response<?> publishNote(PublishNoteReqVO publishNoteReqVO) {
+        // 笔记类型
+        Integer type = publishNoteReqVO.getType();
+
+        // 获取对应的枚举类型
+        NoteTypeEnum noteTypeEnum = NoteTypeEnum.valueOf(type);
+
+        // 若非图文或视频则抛异常
+        if (Objects.isNull(noteTypeEnum)) {
+            throw new ApiException(ResponseCodeEnum.NOTE_TYPE_ERROR);
+        }
+
+        String imgUris = null;
+        // 笔记内容是否为空，默认为空，即true
+        boolean isContentEmpty = true;
+        String videoUri = null;
+        switch (noteTypeEnum) {
+            case IMAGE_TEXT -> {
+                List<String> imgUriList = publishNoteReqVO.getImgUris();
+                //校验图片是否为空
+                Preconditions.checkArgument(CollUtil.isNotEmpty(imgUriList), "笔记图片不能为空！");
+                //校验图片数目
+                Preconditions.checkArgument(imgUriList.size() <= 8, "图片不能超过8张！");
+                //把图片uri拼接成字符串，逗号隔开
+                imgUris = String.join(",", imgUriList);
+            }
+            case VIDEO -> {
+                videoUri = publishNoteReqVO.getVideoUri();
+                //校验视频是否为空
+                Preconditions.checkArgument(StringUtils.isNoneBlank(videoUri), "笔记视频不能为空！");
+            }
+            default -> {
+            }
+        }
+
+        // RPC：调用分布式ID生成服务，生成笔记ID
+        String snowflakeId = distributedIdGeneratorRpcService.getSnowflakeId();
+        // 笔记内容UUID
+        String contentUuid = null;
+        // 笔记内容
+        String content = publishNoteReqVO.getContent();
+        // 若用户填写了笔记内容，则调用KV服务
+        if (StringUtils.isNotBlank(content)) {
+            isContentEmpty = false;
+            // 生成笔记内容UUID
+            contentUuid = UUID.randomUUID().toString();
+            // RPC：调用KV服务，保存笔记内容
+            boolean isSaveSuccess = keyValueRpcService.saveNoteContent(contentUuid, content);
+            // 若保存笔记内容失败，则抛异常
+            if (!isSaveSuccess) {
+                throw new ApiException(ResponseCodeEnum.NOTE_PUBLISH_FAIL);
+            }
+        }
+
+        // 话题
+        Long topicId = publishNoteReqVO.getTopicId();
+        String topicName = null;
+        if (Objects.nonNull(topicId)) {
+            //获取话题名称
+            topicName = topicDOService.getById(topicId).getName();
+        }
+
+        // 发布者ID
+        Long creatorId = LoginUserContextHolder.getUserId();
+
+        // 构建笔记对象
+        NoteDO noteDO = NoteDO.builder()
+                .id(Long.valueOf(snowflakeId))
+                .isContentEmpty(isContentEmpty)
+                .creatorId(creatorId)
+                .imgUris(imgUris)
+                .title(publishNoteReqVO.getTitle())
+                .topicId(publishNoteReqVO.getTopicId())
+                .topicName(topicName)
+                .type(type)
+                .visible(NoteVisibleEnum.PUBLIC.getCode())
+                .createTime(LocalDateTime.now())
+                .updateTime(LocalDateTime.now())
+                .status(NoteStatusEnum.NORMAL.getCode())
+                .isTop(Boolean.FALSE)
+                .videoUri(videoUri)
+                .contentUuid(contentUuid)
+                .build();
+        try {
+            boolean isSaveSuccess = this.save(noteDO);
+        } catch (Exception e) {
+            log.error("保存笔记失败！", e);
+            // RPC：调用KV服务，删除笔记内容
+            if (StringUtils.isNotBlank(contentUuid)) {
+                keyValueRpcService.deleteNoteContent(contentUuid);
+            }
+        }
+        return Response.success();
+    }
+}

han-note-note/han-note-note-biz/src/main/java/com/hanserwei/hannote/note/biz/service/impl/TopicDOServiceImpl.java

@@ -0,0 +1,12 @@
+package com.hanserwei.hannote.note.biz.service.impl;
+
+import com.hanserwei.hannote.note.biz.service.TopicDOService;
+import org.springframework.stereotype.Service;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.hanserwei.hannote.note.biz.domain.dataobject.TopicDO;
+import com.hanserwei.hannote.note.biz.domain.mapper.TopicDOMapper;
+
+@Service
+public class TopicDOServiceImpl extends ServiceImpl<TopicDOMapper, TopicDO> implements TopicDOService {
+
+}

han-note-note/han-note-note-biz/src/main/resources/mapperxml/NoteDOMapper.xml

@@ -18,10 +18,11 @@
     <result column="create_time" jdbcType="TIMESTAMP" property="createTime" />
     <result column="update_time" jdbcType="TIMESTAMP" property="updateTime" />
     <result column="status" jdbcType="TINYINT" property="status" />
+    <result column="content_uuid" jdbcType="VARCHAR" property="contentUuid" />
   </resultMap>
   <sql id="Base_Column_List">
     <!--@mbg.generated-->
     id, title, is_content_empty, creator_id, topic_id, topic_name, is_top, `type`, img_uris, 
-    video_uri, visible, create_time, update_time, `status`
+    video_uri, visible, create_time, update_time, `status`, content_uuid
   </sql>
 </mapper>

han-note-user/han-note-user-api/src/main/java/com/hanserwei/hannote/user/dto/req/FindUserByIdReqDTO.java

@@ -0,0 +1,21 @@
+package com.hanserwei.hannote.user.dto.req;
+
+import jakarta.validation.constraints.NotNull;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+@Builder
+public class FindUserByIdReqDTO {
+
+    /**
+     * 用户ID
+     */
+    @NotNull(message = "用户 ID 不能为空")
+    private Long id;
+
+}

han-note-user/han-note-user-api/src/main/java/com/hanserwei/hannote/user/dto/resp/FindUserByIdRspDTO.java

@@ -0,0 +1,28 @@
+package com.hanserwei.hannote.user.dto.resp;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+@Builder
+public class FindUserByIdRspDTO {
+
+    /**
+     * 用户 ID
+     */
+    private Long id;
+
+    /**
+     * 昵称
+     */
+    private String nickName;
+
+    /**
+     * 头像
+     */
+    private String avatar;
+}

han-note-user/han-note-user-biz/src/main/java/com/hanserwei/hannote/user/biz/controller/UserController.java

@@ -5,9 +5,11 @@ import com.hanserwei.framework.common.response.Response;
 import com.hanserwei.hannote.user.biz.model.vo.UpdateUserInfoReqVO;
 import com.hanserwei.hannote.user.biz.service.UserService;
 import com.hanserwei.hannote.user.dto.req.FindUserByEmailReqDTO;
+import com.hanserwei.hannote.user.dto.req.FindUserByIdReqDTO;
 import com.hanserwei.hannote.user.dto.req.RegisterUserReqDTO;
 import com.hanserwei.hannote.user.dto.req.UpdateUserPasswordReqDTO;
 import com.hanserwei.hannote.user.dto.resp.FindUserByEmailRspDTO;
+import com.hanserwei.hannote.user.dto.resp.FindUserByIdRspDTO;
 import jakarta.annotation.Resource;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.http.MediaType;
@@ -55,4 +57,10 @@ public class UserController {
         return userService.updatePassword(updateUserPasswordReqDTO);
     }
 
+    @PostMapping("/findById")
+    @ApiOperationLog(description = "查询用户信息")
+    public Response<FindUserByIdRspDTO> findById(@Validated @RequestBody FindUserByIdReqDTO findUserByIdReqDTO) {
+        return userService.findById(findUserByIdReqDTO);
+    }
+
 }

han-note-user/han-note-user-biz/src/main/java/com/hanserwei/hannote/user/biz/service/UserService.java

@@ -5,9 +5,11 @@ import com.hanserwei.framework.common.response.Response;
 import com.hanserwei.hannote.user.biz.domain.dataobject.UserDO;
 import com.hanserwei.hannote.user.biz.model.vo.UpdateUserInfoReqVO;
 import com.hanserwei.hannote.user.dto.req.FindUserByEmailReqDTO;
+import com.hanserwei.hannote.user.dto.req.FindUserByIdReqDTO;
 import com.hanserwei.hannote.user.dto.req.RegisterUserReqDTO;
 import com.hanserwei.hannote.user.dto.req.UpdateUserPasswordReqDTO;
 import com.hanserwei.hannote.user.dto.resp.FindUserByEmailRspDTO;
+import com.hanserwei.hannote.user.dto.resp.FindUserByIdRspDTO;
 
 public interface UserService extends IService<UserDO> {
 
@@ -42,4 +44,12 @@ public interface UserService extends IService<UserDO> {
      * @return 响应结果
      */
     Response<?> updatePassword(UpdateUserPasswordReqDTO updateUserPasswordReqDTO);
+
+    /**
+     * 根据用户 ID 查询用户信息
+     *
+     * @param findUserByIdReqDTO 查询用户信息请求参数
+     * @return 响应结果
+     */
+    Response<FindUserByIdRspDTO> findById(FindUserByIdReqDTO findUserByIdReqDTO);
 }

han-note-user/han-note-user-biz/src/main/java/com/hanserwei/hannote/user/biz/service/impl/UserServiceImpl.java

@@ -25,9 +25,11 @@ import com.hanserwei.hannote.user.biz.rpc.DistributedIdGeneratorRpcService;
 import com.hanserwei.hannote.user.biz.rpc.OssRpcService;
 import com.hanserwei.hannote.user.biz.service.UserService;
 import com.hanserwei.hannote.user.dto.req.FindUserByEmailReqDTO;
+import com.hanserwei.hannote.user.dto.req.FindUserByIdReqDTO;
 import com.hanserwei.hannote.user.dto.req.RegisterUserReqDTO;
 import com.hanserwei.hannote.user.dto.req.UpdateUserPasswordReqDTO;
 import com.hanserwei.hannote.user.dto.resp.FindUserByEmailRspDTO;
+import com.hanserwei.hannote.user.dto.resp.FindUserByIdRspDTO;
 import jakarta.annotation.Resource;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
@@ -229,5 +231,23 @@ public class UserServiceImpl extends ServiceImpl<UserDOMapper, UserDO> implement
         // 更新用户密码
         return updateById(userDO) ? Response.success() : Response.fail();
     }
+
+    @Override
+    public Response<FindUserByIdRspDTO> findById(FindUserByIdReqDTO findUserByIdReqDTO) {
+        Long userId = findUserByIdReqDTO.getId();
+        UserDO userDO = this.getOne(new QueryWrapper<UserDO>().eq("id", userId));
+
+        // 判空
+        if (Objects.isNull(userDO)) {
+            throw new ApiException(ResponseCodeEnum.USER_NOT_FOUND);
+        }
+        // 构建返参
+        FindUserByIdRspDTO findUserByIdRspDTO = FindUserByIdRspDTO.builder()
+                .id(userDO.getId())
+                .nickName(userDO.getNickname())
+                .avatar(userDO.getAvatar())
+                .build();
+        return Response.success(findUserByIdRspDTO);
+    }
 }
 

sql/createData.sql

@@ -15,3 +15,12 @@ VALUES (1, 1, 1, now(), now(), b'0');
 
 INSERT INTO `t_role_permission_rel` (`id`, `role_id`, `permission_id`, `create_time`, `update_time`, `is_deleted`)
 VALUES (2, 1, 2, now(), now(), b'0');
+
+INSERT INTO `han_note`.`t_channel` (`name`, `create_time`, `update_time`, `is_deleted`) VALUES ('美食', now(), now(), 0);
+INSERT INTO `han_note`.`t_channel` (`name`, `create_time`, `update_time`, `is_deleted`) VALUES ('娱乐', now(), now(), 0);
+
+INSERT INTO `han_note`.`t_topic` (`name`, `create_time`, `update_time`, `is_deleted`) VALUES ('高分美剧推荐', now(), now(), 0);
+INSERT INTO `han_note`.`t_topic` (`name`, `create_time`, `update_time`, `is_deleted`) VALUES ('下饭综艺推荐', now(), now(), 0);
+
+INSERT INTO `han_note`.`t_channel_topic_rel` (`channel_id`, `topic_id`, `create_time`, `update_time`) VALUES (2, 1, now(), now());
+INSERT INTO `han_note`.`t_channel_topic_rel` (`channel_id`, `topic_id`, `create_time`, `update_time`) VALUES (2, 2, now(), now());

sql/createTable.sql

@@ -147,3 +147,5 @@ CREATE TABLE `t_note`
 ) ENGINE = InnoDB
   DEFAULT CHARSET = utf8mb4
   COLLATE = utf8mb4_unicode_ci COMMENT ='笔记表';
+
+ALTER table t_note add column `content_uuid` varchar(36) DEFAULT '' COMMENT '笔记内容UUID';