今天完成的事情：（一定要写非常细致的内容，比如说学会了盒子模型，了解了Margin）

CommentServiceImpl

package org.example.service.Impl;

import org.example.mapper.CommentMapper;
import org.example.model.Comment;
import org.example.service.CommentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.EnableMBeanExport;
import org.springframework.stereotype.Service;
import java.util.List;

@Service
public class CommentServiceImpl implements CommentService {

    @Autowired
    private CommentMapper commentMapper;

    @Override
    public Long createComment(Comment comment) {
        long currentTime = System.currentTimeMillis();
        comment.setCreateAt(currentTime);
        comment.setUpdateAt(currentTime);
        commentMapper.insert(comment);
        return comment.getId();
    }

    @Override
    public boolean updateComment(Comment comment) {
        comment.setUpdateAt(System.currentTimeMillis());
        return commentMapper.update(comment) > 0;
    }

    @Override
    public boolean deleteComment(Long id) {
        return commentMapper.delete(id) > 0;
    }

    @Override
    public Comment getCommentByName(String name) {
        return commentMapper.selectByName(name);
    }

    @Override
    public List<Comment> getAllComments() {
        return commentMapper.selectAll();
    }

    @Override
    public List<Comment> getCommentsByPid(Long pid) {
        return commentMapper.selectByPid(pid);
    }
}

CommentController

package org.example.controller;

import org.example.mapper.CommentMapper;
import org.example.model.ApiResponse;
import org.example.model.Comment;
import org.example.service.CommentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

@RestController
@RequestMapping("/comment")
public class CommentController {

    @Autowired
    private CommentService commentService;

    @Autowired
    private CommentMapper commentMapper;

    // 获取单个评论
    @GetMapping("/{name}")
    public ApiResponse<Comment> getComment(@PathVariable String name) {
        Comment comment = commentService.getCommentByName(name);
        if (comment != null) {
            return ApiResponse.success(comment);
        } else {
            return ApiResponse.error(404, "评论不存在");
        }
    }

    // 创建评论
    @PostMapping("/")
    public ApiResponse<Map<String, Object>> createComment(@RequestBody Comment comment) {
        try {
            Long id = commentService.createComment(comment);
            if (id != null) {
                Map<String, Object> response = new HashMap<>();
                response.put("id", id);
                return ApiResponse.success(response);
            } else {
                return ApiResponse.error(500, "创建失败");
            }
        } catch (Exception e) {
            return ApiResponse.error(400, "参数错误: " + e.getMessage());
        }
    }

    // 更新评论
    @PutMapping("/{id}")
    public ApiResponse<Map<String, Object>> updateComment(@PathVariable Long id, @RequestBody Comment comment) {
        try {
            comment.setId(id);
            boolean success = commentService.updateComment(comment);
            if (success) {
                Map<String, Object> response = new HashMap<>();
                response.put("id", id);
                return ApiResponse.success(response);
            } else {
                return ApiResponse.error(500, "更新失败，请检查ID是否存在或字段是否有改动");
            }
        } catch (Exception e) {
            e.printStackTrace();
            return ApiResponse.error(400, "更新失败: " + e.getMessage());
        }
    }

    // 删除评论
    @DeleteMapping("/{id}")
    public ApiResponse<String> deleteComment(@PathVariable Long id) {
        boolean success = commentService.deleteComment(id);
        if (success) {
            return ApiResponse.success("删除成功");
        } else {
            return ApiResponse.error(500, "删除失败");
        }
    }

    // 根据作品ID获取评论
    @GetMapping("/by-pid/{pid}")
    public ApiResponse<List<Comment>> getCommentsByPid(@PathVariable Long pid) {
        List<Comment> comments = commentService.getCommentsByPid(pid);
        return ApiResponse.success(comments);
    }
}

明天计划的事情：（一定要写非常细致的内容）
遇到的问题：（遇到什么困难，怎么解决的）
收获：（通过今天的学习，学到了什么知识）