题库导入功能完成，考试计划功能完成。

api/models/user.ts

@@ -43,6 +43,58 @@ export class UserModel {
     await run(`DELETE FROM users WHERE id = ?`, [id]);
   }
 
+  // 更新用户信息
+  static async update(id: string, data: Partial<CreateUserData>): Promise<User> {
+    // 验证数据
+    const errors = this.validateUserData(data as CreateUserData);
+    if (errors.length > 0) {
+      throw new Error(errors.join(', '));
+    }
+    
+    // 检查手机号唯一性
+    if (data.phone !== undefined) {
+      const existingUser = await this.findByPhone(data.phone);
+      if (existingUser && existingUser.id !== id) {
+        throw new Error('手机号已存在');
+      }
+    }
+    
+    // 构建更新字段
+    const fields: string[] = [];
+    const values: any[] = [];
+    
+    if (data.name !== undefined) {
+      fields.push('name = ?');
+      values.push(data.name);
+    }
+    
+    if (data.phone !== undefined) {
+      fields.push('phone = ?');
+      values.push(data.phone);
+    }
+    
+    if (data.password !== undefined) {
+      fields.push('password = ?');
+      values.push(data.password);
+    }
+    
+    if (fields.length === 0) {
+      return this.findById(id) as Promise<User>;
+    }
+    
+    values.push(id);
+    const sql = `UPDATE users SET ${fields.join(', ')} WHERE id = ?`;
+    
+    await run(sql, values);
+    const updatedUser = await this.findById(id);
+    
+    if (!updatedUser) {
+      throw new Error('用户不存在');
+    }
+    
+    return updatedUser;
+  }
+
   static async findById(id: string): Promise<User | null> {
     const sql = `SELECT id, name, phone, password, created_at as createdAt FROM users WHERE id = ?`;
     const user = await get(sql, [id]);
@@ -55,6 +107,12 @@ export class UserModel {
     return user || null;
   }
 
+  static async findByName(name: string): Promise<User[]> {
+    const sql = `SELECT id, name, phone, password, created_at as createdAt FROM users WHERE name = ?`;
+    const users = await query(sql, [name]);
+    return users || [];
+  }
+
   static async findAll(limit = 10, offset = 0): Promise<{ users: User[]; total: number }> {
     const usersSql = `
       SELECT id, name, phone, password, created_at as createdAt 
@@ -75,15 +133,21 @@ export class UserModel {
     };
   }
 
-  static validateUserData(data: CreateUserData): string[] {
+  // 验证用户数据，支持部分数据验证
+  static validateUserData(data: Partial<CreateUserData>): string[] {
     const errors: string[] = [];
     
-    if (!data.name || data.name.length < 2 || data.name.length > 20) {
-      errors.push('姓名长度必须在2-20个字符之间');
+    // 只验证提供了的数据
+    if (data.name !== undefined) {
+      if (data.name.length < 2 || data.name.length > 20) {
+        errors.push('姓名长度必须在2-20个字符之间');
+      }
     }
     
-    if (!data.phone || !/^1[3-9]\d{9}$/.test(data.phone)) {
-      errors.push('手机号格式不正确，请输入11位中国手机号');
+    if (data.phone !== undefined) {
+      if (!/^1[3-9]\d{9}$/.test(data.phone)) {
+        errors.push('手机号格式不正确，请输入11位中国手机号');
+      }
     }
     
     return errors;