feat:增加分页查询朋友圈功能

src/main/java/com/cxx/food/controller/MomentController.java

@@ -1,5 +1,6 @@
 package com.cxx.food.controller;
 
+import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.cxx.food.dto.*;
 import com.cxx.food.service.MomentService;
 import com.fasterxml.jackson.annotation.JsonView;
@@ -43,6 +44,13 @@ public class MomentController {
         return momentService.queryMomentList();
     }
 
+    @Operation(summary = "分页查询所有朋友圈")
+    @GetMapping("/page")
+    public IPage<MomentDto> queryMomentByPage(@RequestParam("currentPage") Integer currentPage,
+                                              @RequestParam("pageSize") Integer pageSize) {
+        return momentService.queryMomentByPage(currentPage, pageSize);
+    }
+
     @Operation(summary = "查询朋友圈")
     @GetMapping("/{id}")
     public @JsonView(ReadView.class) List<MomentDto> queryMomentById(@PathVariable("id") long id) {

src/main/java/com/cxx/food/dao/MomentDao.java

@@ -1,5 +1,7 @@
 package com.cxx.food.dao;
 
+import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.cxx.food.dto.*;
 import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Param;
@@ -10,6 +12,8 @@ import java.util.List;
 public interface MomentDao {
     List<MomentDto> queryMomentList();
 
+    IPage<MomentDto> queryMomentByPage(Page<MomentDto> page);
+
     List<MomentDto> queryMomentById(@Param("id") Long id);
 
     void insertMomentImage(@Param("momentId") Long momentId,

src/main/java/com/cxx/food/dto/MomentPageDto.java

@@ -0,0 +1,41 @@
+package com.cxx.food.dto;
+
+import com.fasterxml.jackson.annotation.JsonFormat;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Getter;
+import lombok.Setter;
+
+import java.util.Date;
+import java.util.List;
+
+@Getter
+@Setter
+public class MomentPageDto {
+    @Schema(description = "id")
+    private Long id;
+
+    @Schema(description = "用户id")
+    private Long userId;
+
+    @Schema(description = "姓名")
+    private String username;
+
+    @Schema(description = "头像")
+    private String avatar;
+
+    @Schema(description = "朋友圈内容")
+    private String content;
+
+    @Schema(description = "朋友圈图片")
+    private List<String> imageList;
+
+    @Schema(description = "时间")
+    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")
+    private Date date;
+
+    @Schema(description = "点赞用户")
+    private List<Long> likeList;
+
+    @Schema(description = "评论内容")
+    private List<CommentDto> commentList;
+}

src/main/java/com/cxx/food/service/MomentService.java

@@ -1,6 +1,7 @@
 package com.cxx.food.service;
 
 
+import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.cxx.food.dto.*;
 
 import java.util.List;
@@ -14,6 +15,8 @@ public interface MomentService {
 
     List<MomentDto> queryMomentList();
 
+    IPage<MomentDto> queryMomentByPage(int currentPage, int pageSize);
+
     List<MomentDto> queryMomentById(Long id);
 
     Boolean addComment(Long momentId, String content);

src/main/java/com/cxx/food/service/impl/MomentServiceImpl.java

@@ -1,6 +1,8 @@
 package com.cxx.food.service.impl;
 
+import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.baomidou.mybatisplus.core.toolkit.Wrappers;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.cxx.food.constant.BizType;
 import com.cxx.food.dao.MomentDao;
 import com.cxx.food.dto.MomentDto;
@@ -74,6 +76,12 @@ public class MomentServiceImpl implements MomentService {
         return momentDao.queryMomentList();
     }
 
+    @Override
+    public IPage<MomentDto> queryMomentByPage(int currentPage, int pageSize) {
+        Page<MomentDto> page = new Page<>(currentPage, pageSize);
+        return momentDao.queryMomentByPage(page);
+    }
+
     @Override
     public List<MomentDto> queryMomentById(Long id) {
         return momentDao.queryMomentById(id);

src/main/resources/mapper/MomentMapper.xml

@@ -18,6 +18,23 @@
         </collection>
     </resultMap>
 
+    <resultMap id="momentPageResultMap" type="com.cxx.food.dto.MomentPageDto">
+        <id property="id" column="id"/>
+        <result property="userId" column="userId"/>
+        <result property="username" column="username"/>
+        <result property="avatar" column="avatar"/>
+        <result property="content" column="content"/>
+        <result property="date" column="date"/>
+        <collection property="imageList" ofType="java.lang.String"
+                    column="id" select="queryMomentImage"/>
+        <collection property="likeList" ofType="long"
+                    column="id" select="queryMomentLike">
+        </collection>
+        <collection property="commentList" ofType="com.cxx.food.dto.CommentDto"
+                    column="id" select="queryMomentComment">
+        </collection>
+    </resultMap>
+
     <resultMap id="commentResultMap" type="com.cxx.food.dto.CommentDto">
         <id property="id" column="id"/>
         <result property="username" column="username"/>
@@ -56,6 +73,18 @@
         ORDER BY a.create_time DESC
     </select>
 
+    <select id="queryMomentByPage" resultMap="momentPageResultMap">
+        SELECT a.id                   AS id,
+               b.id                   AS userId,
+               b.username             AS username,
+               COALESCE(b.avatar, '') AS avatar,
+               a.content              AS content,
+               a.create_time          AS date
+        FROM moment AS a
+                 LEFT JOIN user AS b ON a.create_by = b.id
+        ORDER BY a.create_time DESC
+    </select>
+
     <select id="queryMomentById" resultMap="momentResultMap">
         SELECT a.id          AS id,
                b.id          AS userId,