community-8073/src/main/java/com/ivmiku/tutorial/config/MpConfig.java

@@ -0,0 +1,15 @@
+package com.ivmiku.tutorial.config;
+import com.baomidou.mybatisplus.annotation.DbType;
+import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
+import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+@Configuration
+public class MpConfig {
+    @Bean
+    public MybatisPlusInterceptor mybatisPlusInterceptor() {
+        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
+        interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
+        return interceptor;
+    }
+}

community-8073/src/main/java/com/ivmiku/tutorial/controller/CommentController.java

@@ -2,6 +2,7 @@ package com.ivmiku.tutorial.controller;
 
 import cn.dev33.satoken.annotation.SaCheckLogin;
 import cn.dev33.satoken.stp.StpUtil;
+import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.github.pagehelper.PageInfo;
 import com.ivmiku.tutorial.entity.Comment;
 import com.ivmiku.tutorial.entity.Pages;
@@ -210,7 +211,7 @@ public class CommentController {
         logger.info("获取帖子ID：{}的评论列表", postId);
         logger.info("获取pageSize：{}", pages.getPageSize());
         System.out.println("aaaaaa" + pages.getPageSize());
-        PageInfo<Comment> comments = commentService.getPostComments(postId, pages.getPageNum(), pages.getPageSize());
+        IPage<Comment> comments = commentService.getPostComments(postId, pages.getPageNum(), pages.getPageSize());
         return Result.ok(comments);
     }
 
@@ -224,7 +225,7 @@ public class CommentController {
     @Operation(summary = "获取评论下的所有回复")
     public Result getCommentReplies(@PathVariable Long commentId, @RequestBody Pages pages) {
         logger.info("获取评论ID：{}的回复列表", commentId);
-        PageInfo<Comment> replies = commentService.getCommentReplies(commentId, pages.getPageNum(), pages.getPageSize());
+        IPage<Comment> replies = commentService.getCommentReplies(commentId, pages.getPageNum(), pages.getPageSize());
         return Result.ok(replies);
     }
 

community-8073/src/main/java/com/ivmiku/tutorial/controller/PostController.java

@@ -2,6 +2,7 @@ package com.ivmiku.tutorial.controller;
 
 import cn.dev33.satoken.annotation.SaCheckLogin;
 import cn.dev33.satoken.stp.StpUtil;
+import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.github.pagehelper.PageInfo;
 import com.ivmiku.tutorial.entity.Pages;
 import com.ivmiku.tutorial.entity.Post;
@@ -116,7 +117,7 @@ public class PostController {
     public Result getPostList(@RequestBody Pages pages) {
         logger.info("开始获取帖子列表");
         String userId = StpUtil.getLoginIdAsString(); // 获取当前登录用户的ID
-        PageInfo<Post> posts = postService.getPostList(userId, pages.getPageNum(), pages.getPageSize());
+        IPage<Post> posts = postService.getPostList(userId, pages.getPageNum(), pages.getPageSize());
         return Result.ok(posts); // 调用服务层获取帖子列表
     }
 
@@ -127,7 +128,7 @@ public class PostController {
     @GetMapping("/getCommunityPostList{communityId}")
     public Result getCommunityPostList(@PathVariable("communityId") Long communityId, @RequestBody Pages pages) {
         logger.info("开始获取帖子列表");
-        PageInfo<Post> posts = postService.getCommunityPostList(communityId, pages.getPageNum(), pages.getPageSize());
+        IPage<Post> posts = postService.getCommunityPostList(communityId, pages.getPageNum(), pages.getPageSize());
         return Result.ok(posts); // 调用服务层获取帖子列表
     }
 
@@ -136,7 +137,7 @@ public class PostController {
      * @return
      */
     @GetMapping("/official")
-    public PageInfo<Post> getOfficialPosts(@RequestBody Pages pages) {
+    public IPage<Post> getOfficialPosts(@RequestBody Pages pages) {
         return postService.getOfficialPosts(pages.getPageNum(), pages.getPageSize());
     }
 
@@ -145,7 +146,7 @@ public class PostController {
      * @return
      */
     @GetMapping("/nonOfficial")
-    public PageInfo<Post> getNonOfficialPosts(@RequestBody Pages pages) {
+    public IPage<Post> getNonOfficialPosts(@RequestBody Pages pages) {
         return postService.getNonOfficialPosts(pages.getPageNum(), pages.getPageSize());
     }
 

community-8073/src/main/java/com/ivmiku/tutorial/service/CommentService.java

@@ -1,5 +1,6 @@
 package com.ivmiku.tutorial.service;
 
+import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.github.pagehelper.PageInfo;
 import com.ivmiku.tutorial.entity.Comment;
 import com.baomidou.mybatisplus.extension.service.IService;
@@ -50,9 +51,9 @@ public interface CommentService extends IService<Comment> {
 
     void deleteComment(Long commentId, String userId);
 
-    PageInfo<Comment> getPostComments(Long postId, int pageNum, int pageSize);
+    IPage<Comment> getPostComments(Long postId, int pageNum, int pageSize);
 
-    PageInfo<Comment> getCommentReplies(Long commentId, int pageNum, int pageSize);
+    IPage<Comment> getCommentReplies(Long commentId, int pageNum, int pageSize);
 
     /**
      * 回复评论。

community-8073/src/main/java/com/ivmiku/tutorial/service/PostService.java

@@ -1,5 +1,6 @@
 package com.ivmiku.tutorial.service;
 
+import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.github.pagehelper.PageInfo;
 import com.ivmiku.tutorial.entity.Post;
 import com.baomidou.mybatisplus.extension.service.IService;
@@ -12,13 +13,13 @@ public interface PostService extends IService<Post> {
     void updatePost(Long postId, String userId, Post post);
     void deletePost(Long postId, String userId);
 
-    PageInfo<Post> getPostList(String userId, int pageNum, int pageSize);
+    IPage<Post> getPostList(String userId, int pageNum, int pageSize);
 
-    PageInfo<Post> getCommunityPostList(Long communityId, int pageNum, int pageSize);
+    IPage<Post> getCommunityPostList(Long communityId, int pageNum, int pageSize);
 
-    PageInfo<Post> getOfficialPosts(int pageNum, int pageSize);
+    IPage<Post> getOfficialPosts(int pageNum, int pageSize);
 
-    PageInfo<Post> getNonOfficialPosts(int pageNum, int pageSize);
+    IPage<Post> getNonOfficialPosts(int pageNum, int pageSize);
 
     void changePublic(Long postId, Integer isPublic);
 }

community-8073/src/main/java/com/ivmiku/tutorial/service/impl/CommentServiceImpl.java

@@ -2,6 +2,8 @@ package com.ivmiku.tutorial.service.impl;
 
 import cn.dev33.satoken.stp.StpUtil;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.github.pagehelper.PageHelper;
 import com.github.pagehelper.PageInfo;
 import com.ivmiku.tutorial.entity.Comment;
@@ -103,16 +105,17 @@ public class CommentServiceImpl extends ServiceImpl<CommentMapper, Comment> impl
      * @return List<Comment> 返回评论列表
      */
     @Override
-    public PageInfo<Comment> getPostComments(Long postId, int pageNum, int pageSize) {
+    public IPage<Comment> getPostComments(Long postId, int pageNum, int pageSize) {
         logger.info("开始获取帖子ID：{}的评论列表，第{}页，每页{}条", postId, pageNum, pageSize);
 
         // 设置分页参数
-        PageHelper.startPage(pageNum, pageSize);
+//        PageHelper.startPage(pageNum, pageSize);
+        IPage<Comment> page = new Page<>(pageNum, pageSize);
 
         // 查询评论
         LambdaQueryWrapper<Comment> wrapper = new LambdaQueryWrapper<>();
         wrapper.eq(Comment::getPostId, postId).eq(Comment::getIsDeleted, 0);
-        List<Comment> comments = commentMapper.selectList(wrapper);
+        IPage<Comment> comments = commentMapper.selectPage(page, wrapper);
 
         if (comments != null) {
             logger.info("获取帖子ID：{}的评论列表成功", postId);
@@ -121,7 +124,7 @@ public class CommentServiceImpl extends ServiceImpl<CommentMapper, Comment> impl
         }
 
         // 使用 PageInfo 包装结果
-        return new PageInfo<>(comments);
+        return comments;
     }
 
 
@@ -132,16 +135,16 @@ public class CommentServiceImpl extends ServiceImpl<CommentMapper, Comment> impl
      * @return List<Comment> 返回回复列表
      */
     @Override
-    public PageInfo<Comment> getCommentReplies(Long commentId, int pageNum, int pageSize) {
+    public IPage<Comment> getCommentReplies(Long commentId, int pageNum, int pageSize) {
         logger.info("开始获取评论ID：{}的回复列表，第{}页，每页{}条", commentId, pageNum, pageSize);
 
         // 设置分页参数
-        PageHelper.startPage(pageNum, pageSize);
+//        PageHelper.startPage(pageNum, pageSize);
-
+        IPage<Comment> page = new Page<>(pageNum, pageSize);
         // 查询回复
         LambdaQueryWrapper<Comment> wrapper = new LambdaQueryWrapper<>();
         wrapper.eq(Comment::getParentCommentId, commentId).eq(Comment::getIsDeleted, 0);
-        List<Comment> replies = commentMapper.selectList(wrapper);
+        IPage<Comment> replies = commentMapper.selectPage(page, wrapper);
 
         if (replies != null) {
             logger.info("获取评论ID：{}的回复列表成功", commentId);
@@ -150,7 +153,7 @@ public class CommentServiceImpl extends ServiceImpl<CommentMapper, Comment> impl
         }
 
         // 使用 PageInfo 包装结果
-        return new PageInfo<>(replies);
+        return replies;
     }
     /**
      * 回复评论。

community-8073/src/main/java/com/ivmiku/tutorial/service/impl/PostServiceImpl.java

@@ -1,8 +1,11 @@
 package com.ivmiku.tutorial.service.impl;
 
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.github.pagehelper.PageHelper;
 import com.github.pagehelper.PageInfo;
+import com.ivmiku.tutorial.entity.Comment;
 import com.ivmiku.tutorial.entity.Post;
 import com.ivmiku.tutorial.mapper.PostMapper;
 import com.ivmiku.tutorial.service.PostService;
@@ -70,83 +73,83 @@ public class PostServiceImpl extends ServiceImpl<PostMapper, Post> implements Po
     }
 
     @Override
-    public PageInfo<Post> getPostList(String userId, int pageNum, int pageSize) {
+    public IPage<Post> getPostList(String userId, int pageNum, int pageSize) {
         logger.info("用户ID：{}开始获取帖子列表，第{}页，每页{}条", userId, pageNum, pageSize);
 
         // 设置分页参数
-        PageHelper.startPage(pageNum, pageSize);
+//        PageHelper.startPage(pageNum, pageSize);
-
+        IPage<Post> page = new Page<>(pageNum, pageSize);
         LambdaQueryWrapper<Post> wrapper = new LambdaQueryWrapper<>();
         wrapper.eq(Post::getUserOpenid, userId);
         wrapper.eq(Post::getIsDeleted, 0);
         wrapper.eq(Post::getIsPublic, 1);
 
-        List<Post> posts = postMapper.selectList(wrapper);
+        IPage<Post> posts = postMapper.selectPage(page, wrapper);
 
         // 使用PageInfo封装分页结果
-        PageInfo<Post> pageInfo = new PageInfo<>(posts);
+//        PageInfo<Post> pageInfo = new PageInfo<>(posts);
 
-        return pageInfo;
+        return posts;
     }
 
     @Override
-    public PageInfo<Post> getCommunityPostList(Long communityId, int pageNum, int pageSize) {
+    public IPage<Post> getCommunityPostList(Long communityId, int pageNum, int pageSize) {
         logger.info("开始获取社区ID：{}的帖子列表，第{}页，每页{}条", communityId, pageNum, pageSize);
 
         // 设置分页参数
-        PageHelper.startPage(pageNum, pageSize);
+//        PageHelper.startPage(pageNum, pageSize);
-
+        IPage<Post> page = new Page<>(pageNum, pageSize);
         LambdaQueryWrapper<Post> wrapper = new LambdaQueryWrapper<>();
         wrapper.eq(Post::getCommunityId, communityId);
         wrapper.eq(Post::getIsDeleted, 0);
         wrapper.eq(Post::getIsPublic, 1);
 
-        List<Post> posts = postMapper.selectList(wrapper);
+        IPage<Post> posts = postMapper.selectPage(page, wrapper);
 
         // 使用PageInfo封装分页结果
-        PageInfo<Post> pageInfo = new PageInfo<>(posts);
+//        PageInfo<Post> pageInfo = new PageInfo<>(posts);
 
-        return pageInfo;
+        return posts;
     }
 
     @Override
-    public PageInfo<Post> getOfficialPosts(int pageNum, int pageSize) {
+    public IPage<Post> getOfficialPosts(int pageNum, int pageSize) {
         logger.info("开始获取所有官方创建的帖子，第{}页，每页{}条", pageNum, pageSize);
 
         // 设置分页参数
-        PageHelper.startPage(pageNum, pageSize);
+//        PageHelper.startPage(pageNum, pageSize);
-
+        IPage<Post> page = new Page<>(pageNum, pageSize);
         LambdaQueryWrapper<Post> wrapper = new LambdaQueryWrapper<>();
         wrapper.eq(Post::getIsOfficial, 1);
         wrapper.eq(Post::getIsDeleted, 0);
         wrapper.eq(Post::getIsPublic, 1);
 
-        List<Post> posts = postMapper.selectList(wrapper);
+        IPage<Post> posts = postMapper.selectPage(page, wrapper);
 
         // 使用PageInfo封装分页结果
-        PageInfo<Post> pageInfo = new PageInfo<>(posts);
+//        PageInfo<Post> pageInfo = new PageInfo<>(posts);
 
-        return pageInfo;
+        return posts;
     }
 
     @Override
-    public PageInfo<Post> getNonOfficialPosts(int pageNum, int pageSize) {
+    public IPage<Post> getNonOfficialPosts(int pageNum, int pageSize) {
         logger.info("开始获取所有非官方创建的帖子，第{}页，每页{}条", pageNum, pageSize);
 
         // 设置分页参数
-        PageHelper.startPage(pageNum, pageSize);
+//        PageHelper.startPage(pageNum, pageSize);
-
+        IPage<Post> page = new Page<>(pageNum, pageSize);
         LambdaQueryWrapper<Post> wrapper = new LambdaQueryWrapper<>();
         wrapper.eq(Post::getIsOfficial, 0);
         wrapper.eq(Post::getIsDeleted, 0);
         wrapper.eq(Post::getIsPublic, 1);
 
-        List<Post> posts = postMapper.selectList(wrapper);
+        IPage<Post> posts = postMapper.selectPage(page, wrapper);
 
         // 使用PageInfo封装分页结果
-        PageInfo<Post> pageInfo = new PageInfo<>(posts);
+//        PageInfo<Post> pageInfo = new PageInfo<>(posts);
 
-        return pageInfo;
+        return posts;
     }
 
     @Override