diff --git a/src/main/resources/mapper/PostRatingMapper.xml b/src/main/resources/mapper/PostRatingMapper.xml
index 097eeb8..bb13dd4 100644
--- a/src/main/resources/mapper/PostRatingMapper.xml
+++ b/src/main/resources/mapper/PostRatingMapper.xml
@@ -1,5 +1,10 @@
-<insert id="insertOrUpdate">
-    INSERT INTO post_ratings (user_id, post_id, rating)
-    VALUES (#{userId}, #{postId}, #{rating})
-    ON DUPLICATE KEY UPDATE rating = VALUES(rating)
-</insert>
\ No newline at end of file
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.example.mapper.PostRatingMapper">
+    <insert id="insertOrUpdate">
+        INSERT INTO post_ratings (user_id, post_id, rating)
+        VALUES (#{userId}, #{postId}, #{rating})
+        ON DUPLICATE KEY UPDATE rating = VALUES(rating)
+    </insert>
+</mapper>
\ No newline at end of file
diff --git a/src/main/resources/schema.sql b/src/main/resources/schema.sql
index 4a3621e..e5faa3f 100644
--- a/src/main/resources/schema.sql
+++ b/src/main/resources/schema.sql
@@ -57,7 +57,7 @@
   `created_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   `last_calculated` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '最后热度计算时间',
   `average_rating` DECIMAL(3,2) DEFAULT 0.00 COMMENT '帖子平均评分',
-  `rating_count` INT DEFAULT 0 COMMENT '总评分人数';
+  `rating_count` INT DEFAULT 0 COMMENT '总评分人数',
   FOREIGN KEY (`user_id`) REFERENCES `users`(`user_id`),
   FOREIGN KEY (`torrent_id`) REFERENCES `torrents`(`torrent_id`),
   INDEX `idx_hot_score` (`hot_score`),          -- 新增热度索引
@@ -147,7 +147,7 @@
   PRIMARY KEY (`user_id`, `post_id`),  -- 确保每个用户对同一帖子只能评分一次
   FOREIGN KEY (`user_id`) REFERENCES `users`(`user_id`),
   FOREIGN KEY (`post_id`) REFERENCES `posts`(`post_id`),
-  INDEX idx_post_ratings_post_id ON post_ratings (post_id)
+  INDEX idx_post_ratings_post_id (post_id)
 );
 
 CREATE TABLE IF NOT EXISTS `reports` (
@@ -167,7 +167,7 @@
 
 CREATE TABLE IF NOT EXISTS `user_signin` (
     `signin_id` BIGINT AUTO_INCREMENT PRIMARY KEY COMMENT '签到记录ID',
-    `user_id` BIGINT NOT NULL COMMENT '用户ID',
+    `user_id` INT NOT NULL COMMENT '用户ID',
     `signin_date` DATE NOT NULL COMMENT '签到日期',
     FOREIGN KEY (`user_id`) REFERENCES `users`(`user_id`) ON DELETE CASCADE,
     UNIQUE KEY `unique_user_daily_signin` (`user_id`, `signin_date`)  -- 唯一约束：用户每日只能签到一次