讲书下添加点赞评论

src/main/java/com/peanut/modules/book/controller/BookTeachLikeAndCommentController.java

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+package com.peanut.modules.book.controller;
+
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.github.yulichang.wrapper.MPJLambdaWrapper;
+import com.peanut.common.utils.Query;
+import com.peanut.common.utils.R;
+import com.peanut.common.utils.ShiroUtils;
+import com.peanut.modules.book.entity.BookTeachCommentEntity;
+import com.peanut.modules.book.entity.BookTeachLikeEntity;
+import com.peanut.modules.book.entity.MyUserEntity;
+import com.peanut.modules.book.service.BookTeachCommentService;
+import com.peanut.modules.book.service.BookTeachLikeService;
+import com.peanut.modules.book.service.MyUserService;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.shiro.SecurityUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+
+@Slf4j
+@RestController
+@RequestMapping("book/teach")
+public class BookTeachLikeAndCommentController {
+
+    @Autowired
+    private BookTeachLikeService likeService;
+    @Autowired
+    private BookTeachCommentService commentService;
+    @Autowired
+    private MyUserService userService;
+
+    /**
+     * 获取点赞数量
+     */
+    @RequestMapping("/getLikeCount")
+    public R getLikeCount(int teachId) {
+        LambdaQueryWrapper<BookTeachLikeEntity> wrapper = new LambdaQueryWrapper<>();
+        wrapper.eq(BookTeachLikeEntity::getDelFlag,0);
+        wrapper.eq(BookTeachLikeEntity::getTeachId,teachId);
+        int count = likeService.count(wrapper);
+        return R.ok().put("count", count);
+    }
+
+    /**
+     * 添加或取消点赞
+     */
+    @RequestMapping("/addOrCancelLike")
+    public R addOrCancelLike(int teachId) {
+        R r = new R();
+        LambdaQueryWrapper<BookTeachLikeEntity> wrapper = new LambdaQueryWrapper<>();
+        wrapper.eq(BookTeachLikeEntity::getTeachId,teachId);
+        wrapper.eq(BookTeachLikeEntity::getUserId, ShiroUtils.getUId());
+        BookTeachLikeEntity like = likeService.getOne(wrapper);
+        if (like == null){
+            like = new BookTeachLikeEntity();
+            like.setTeachId(teachId);
+            like.setUserId(ShiroUtils.getUId());
+            r.put("msg","点赞成功");
+        }else {
+            if (0==like.getDelFlag()){
+                like.setDelFlag(1);
+                r.put("msg","取消成功");
+            }else {
+                like.setDelFlag(0);
+                r.put("msg","点赞成功");
+            }
+        }
+        likeService.saveOrUpdate(like);
+        return r;
+    }
+
+    /**
+     * 本用户当前目录是否点赞
+     */
+    @RequestMapping("/ifLike")
+    public boolean ifLike(int teachId) {
+        LambdaQueryWrapper<BookTeachLikeEntity> wrapper = new LambdaQueryWrapper<>();
+        wrapper.eq(BookTeachLikeEntity::getDelFlag,0);
+        wrapper.eq(BookTeachLikeEntity::getTeachId,teachId);
+        wrapper.eq(BookTeachLikeEntity::getUserId,ShiroUtils.getUId());
+        BookTeachLikeEntity likeEntity = likeService.getOne(wrapper);
+        if (likeEntity != null){
+            return true;
+        }else {
+            return false;
+        }
+    }
+    /**
+     * 获取评论列表
+     */
+    @RequestMapping("/getCommentList")
+    public R getCommentList(@RequestBody Map<String, Object> params) {
+        MPJLambdaWrapper<BookTeachCommentEntity> wrapper = new MPJLambdaWrapper<>();
+        wrapper.eq(BookTeachCommentEntity::getTeachId,params.get("teachId"));
+        wrapper.eq(BookTeachCommentEntity::getParentId,0);
+        wrapper.eq(BookTeachCommentEntity::getDelFlag,0);
+        IPage<BookTeachCommentEntity> page = commentService.page(
+                new Query<BookTeachCommentEntity>().getPage(params),wrapper);
+        //返回体添加子评论和用户信息
+        if (page.getRecords().size() > 0){
+            for (BookTeachCommentEntity comment:page.getRecords()){
+                getSonComment(comment);
+            }
+        }
+        return R.ok().put("page", page);
+    }
+    //递归查询子评论
+    private void getSonComment(BookTeachCommentEntity comment){
+        LambdaQueryWrapper<BookTeachCommentEntity> w = new LambdaQueryWrapper();
+        w.eq(BookTeachCommentEntity::getParentId,comment.getId());
+        w.eq(BookTeachCommentEntity::getDelFlag,0);
+        List<BookTeachCommentEntity> list = commentService.list(w);
+        if (list.size() > 0){
+            for (BookTeachCommentEntity c : list){
+                getSonComment(c);
+            }
+        }
+        comment.setComments(list);
+        comment.setUser(userService.getById(comment.getUserId()));
+    }
+
+    /**
+     * 添加修改评论
+     */
+    @RequestMapping("/addComment")
+    public R addComment(@RequestBody BookTeachCommentEntity comment) {
+        comment.setUserId(ShiroUtils.getUId());
+        commentService.saveOrUpdate(comment);
+        return R.ok();
+    }
+
+    /**
+     * 删除评论
+     */
+    @RequestMapping("/delComment")
+    public R delComment(int commentId) {
+        BookTeachCommentEntity comment = commentService.getById(commentId);
+        comment.setDelFlag(1);
+        commentService.updateById(comment);
+        return R.ok();
+    }
+
+
+}