diff --git a/.idea/shelf/在变基之前未提交的更改_[更改]2/shelved.patch b/.idea/shelf/在变基之前未提交的更改_[更改]2/shelved.patch
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+Index: .idea/workspace.xml
+IDEA additional info:
+Subsystem: com.intellij.openapi.diff.impl.patch.BaseRevisionTextPatchEP
+<+>\r\n\r\n \r\n \r\n \r\n \r\n \r\n \r\n
\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n {\r\n "associatedIndex": 0\r\n}\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n 1761983013107\r\n \r\n \r\n \r\n 1761983013107\r\n \r\n \r\n \r\n 1761983018907\r\n \r\n \r\n \r\n 1761983018907\r\n \r\n \r\n \r\n 1762333284024\r\n \r\n \r\n \r\n 1762333284024\r\n \r\n \r\n \r\n 1762333567204\r\n \r\n \r\n 1762333567204\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n
+Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
+<+>UTF-8
+===================================================================
+diff --git a/.idea/workspace.xml b/.idea/workspace.xml
+--- a/.idea/workspace.xml (revision c455a0312d16e71a9a58ec4f162e0e7463461374)
++++ b/.idea/workspace.xml (date 1762515114727)
+@@ -4,7 +4,7 @@
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+@@ -15,7 +15,7 @@
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+@@ -28,20 +28,20 @@
+
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+- {
++ "keyToString": {
++ "ModuleVcsDetector.initialDetectionPerformed": "true",
++ "RunOnceActivity.ShowReadmeOnStart": "true",
++ "RunOnceActivity.git.unshallow": "true",
++ "SHARE_PROJECT_CONFIGURATION_FILES": "true",
++ "last_opened_file_path": "D:/study_dbqb/Dbqb_Study/孙维宁学习笔记",
++ "node.js.detected.package.eslint": "true",
++ "node.js.selected.package.eslint": "(autodetect)",
++ "node.js.selected.package.tslint": "(autodetect)",
++ "nodejs_package_manager_path": "npm",
++ "vue.rearranger.settings.migration": "true"
+ }
+-}]]>
++}
+
+
+
+@@ -89,8 +89,18 @@
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+@@ -99,6 +109,7 @@
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+\ No newline at end of file
diff --git a/孙维宁学习笔记/11.8孙维宁学习笔记.docx b/孙维宁学习笔记/11.8孙维宁学习笔记.docx
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diff --git a/尹顺宇学习笔记/尹顺宇11.08作业/尹顺宇11.08学习笔记.md b/尹顺宇学习笔记/尹顺宇11.08作业/尹顺宇11.08学习笔记.md
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+# Mybatis初步复习
+
+## 1.SpringBoot整合Mybatis
+
+## 1.1第一步添加依赖
+
+```
+
+
+
+ org.mybatis.spring.boot
+ mybatis-spring-boot-starter
+ 3.0.5
+
+
+```
+
+
+
+### 1.2进行配置
+
+```
+#配置Mybatis
+mybatis:
+ configuration:
+ #在映射为java对象，将表中的下划线命名自动转换成驼峰式命名
+ map-underscore-to-camel-case: true
+ #日志前缀 可选
+ log-prefix: mybatis.
+ #日志实现类 可选
+ log-impl: org.apache.ibatis.logging.commons.JakartaCommonsLoggingImpl
+ #动态sql文件存储位置
+ mapper-locations: classpath:/mapper/**/*.xml
+
+#配置日志显示sql
+logging:
+ level:
+ #指定日志前缀
+ mybatis: debug
+
+
+```
+
+### 1.3 在Dao层编写的mapper接口，添加@Mapper注解
+
+
+
+### 1.4 编写动态sql文件（xx.xml文件）
+
+
+
+### 1.5 安装mybatisx插件
+
+
+
+安装之后在mapper和动态SQL文件对应代码左边有一个小鸟图标，方便直接跳转
+
+
+
+## 2.自动映射
+
+当开启驼峰命名自动映射
+
+```yaml
+mybatis:
+ configuration:
+ map-underscore-to-camel-case: true
+```
+
+## 3.手动映射
+
+当自动映射无法满足需求时，可以使用 `` 进行精确的手动映射。
+
+```xml
+
+
+
+
+
+
+
+
+
+
+
+```
+
+举例：
+
+### 3.1基础字段映射
+
+```java
+实体类
+public class User {
+ private Long userId; // 与数据库字段名不同
+ private String userName; // 需要手动映射
+ private String email;
+ private Integer status;
+ private LocalDateTime createTime;
+ private LocalDateTime updateTime;
+
+ // 构造函数、getter、setter...
+}
+```
+
+```sql
+数据库表结构：
+CREATE TABLE t_user (
+ id BIGINT PRIMARY KEY,
+ name VARCHAR(50),
+ email VARCHAR(100),
+ status TINYINT,
+ created_at DATETIME,
+ updated_at DATETIME
+);
+
+```
+
+```xml
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+```
+
+说明：
+
+
+
+### 3.2一对一关联映射
+
+#### 3.2.1单次查询嵌套结果映射
+
+举例：
+
+```java
+实体类
+public class User {
+ private Long userId;
+ private String userName;
+ private UserProfile userProfile; // 一对一关联
+ // getter/setter...
+}
+
+public class UserProfile {
+ private Long profileId;
+ private Long userId;
+ private String realName;
+ private Integer age;
+ private String address;
+ private String phone;
+ // getter/setter...
+}
+```
+
+```xml
+手动映射配置：
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+```
+
+#### 3.2.2 多次查询嵌套查询映射
+
+```xml
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+```
+
+
+
+### 3.3一对多集合映射
+
+```java
+实体类：
+public class User {
+ private Long userId;
+ private String userName;
+ private List orders; // 一对多关联
+ // getter/setter...
+}
+
+public class Order {
+ private Long orderId;
+ private Long userId;
+ private String orderNumber;
+ private BigDecimal amount;
+ private LocalDateTime orderTime;
+ // getter/setter...
+}
+```
+
+```xml
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+```
+
+### 3.4复杂的多层嵌套
+
+```java
+public class User {
+ private Long userId;
+ private String userName;
+ private List orders;
+}
+
+public class Order {
+ private Long orderId;
+ private String orderNumber;
+ private List orderItems;
+}
+
+public class OrderItem {
+ private Long itemId;
+ private Long productId;
+ private Integer quantity;
+ private Product product; // 关联商品
+}
+
+public class Product {
+ private Long productId;
+ private String productName;
+ private BigDecimal price;
+}
+```
+
+```xml
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+```
+
+### 3.5.注意
+
+1.可以 自动映射与手动映射结合
+
+```xml
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+```
+
+##
+
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