完成动态删除功能

src/main/resources/application.yml

@@ -3,9 +3,9 @@ server:
 
 spring:
   datasource:
-    url: jdbc:mysql://114.55.250.24:3306/dating?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=GMT%2B8
+    url: jdbc:mysql://110.42.41.177:3306/dating?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=GMT%2B8
     username: root
-    password: rJ6DBTYrFCpjdsxy2sBV
+    password: JoyeeServe2025
     driver-class-name: com.mysql.cj.jdbc.Driver
 
 # MyBatis 配置

src/main/resources/com/bao/dating/mapper/PostMapper.xml

@@ -27,4 +27,8 @@
          #{isPublic}, 0, 0, #{createdAt}, #{updatedAt})
     </insert>
 
+    <delete id="deletePostById" parameterType="int">
+        DELETE FROM post WHERE post_id = #{postId}
+    </delete>
+
 </mapper>