commit f4b8b6fc317250b0326afbb1a681bce627040481
author 夜雨声烦 <xxi13552467509@163.com> Thu Apr 24 00:58:36 2025 +0800
committer 夜雨声烦 <xxi13552467509@163.com> Thu Apr 24 00:58:36 2025 +0800
tree 5f8d399f28cd312b1d932b183ded76d846470c30
parent 73fcb38b5fb9edf8044570fcae59af94be06a222

bug_fix+historyview

Change-Id: I6f446c1b660a4322865cfcf5502c88cb772ca0a1

src/main/java/com/example/g8backend/service/IPostService.java

diff --git a/src/main/java/com/example/g8backend/service/IPostService.java b/src/main/java/com/example/g8backend/service/IPostService.java
index 82c792e..a349b59 100644
--- a/src/main/java/com/example/g8backend/service/IPostService.java
+++ b/src/main/java/com/example/g8backend/service/IPostService.java
@@ -2,6 +2,7 @@
 
 import com.example.g8backend.entity.Post;
 import com.baomidou.mybatisplus.extension.service.IService;
+import org.springframework.transaction.annotation.Transactional;
 
 import java.util.List;
 
@@ -16,4 +17,7 @@
     void unlikePost(Long userId, Long postId);
 
     List<Post> searchPosts(String keyword, List<Long> tagIds, String author); // 更新为支持多个标签
+
+    @Transactional
+    void recordViewHistory(Long userId, Long postId);
 }

src/main/java/com/example/g8backend/service/impl/PostServiceImpl.java

diff --git a/src/main/java/com/example/g8backend/service/impl/PostServiceImpl.java b/src/main/java/com/example/g8backend/service/impl/PostServiceImpl.java
index 647095d..f2bef5f 100644
--- a/src/main/java/com/example/g8backend/service/impl/PostServiceImpl.java
+++ b/src/main/java/com/example/g8backend/service/impl/PostServiceImpl.java
@@ -5,11 +5,15 @@
 import com.example.g8backend.entity.Post;
 import com.example.g8backend.entity.PostLike;
 import com.example.g8backend.entity.PostTag;
+import com.example.g8backend.entity.PostView;
 import com.example.g8backend.mapper.PostMapper;
+import com.example.g8backend.mapper.PostViewMapper;
 import com.example.g8backend.service.IPostService;
 import com.example.g8backend.service.IPostTagService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
 import java.sql.Timestamp;
 import java.util.List;
 
@@ -18,11 +22,14 @@
 
     private final PostMapper postMapper;
 
+    private final PostViewMapper postViewMapper;
+
     @Autowired
     private IPostTagService postTagService;
 
-    public PostServiceImpl(PostMapper postMapper) {
+    public PostServiceImpl(PostMapper postMapper, PostViewMapper postViewMapper) {
         this.postMapper = postMapper;
+        this.postViewMapper = postViewMapper;
         this.baseMapper = postMapper; // 重要：设置 baseMapper
     }
 
@@ -87,4 +94,20 @@
     public List<Post> searchPosts(String keyword, List<Long> tagIds, String author) {
         return postMapper.searchPosts(keyword, tagIds, author); // 调用mapper的搜索方法
     }
+
+
+    @Override
+    @Transactional
+    public void recordViewHistory(Long userId, Long postId) {
+        // 1. 插入浏览记录
+        PostView view = new PostView()
+                .setUserId(userId)
+                .setPostId(postId)
+                .setViewTime(new Timestamp(System.currentTimeMillis()).toLocalDateTime());
+        postViewMapper.insert(view);
+
+        // 2. 原子更新浏览数
+        postMapper.incrementViewCount(postId); // 直接调用原子操作
+    }
+
 }
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