diff --git a/book/v4/apps/book/README.md b/book/v4/apps/book/README.md
index a327987..82cea64 100644
--- a/book/v4/apps/book/README.md
+++ b/book/v4/apps/book/README.md
@@ -1,6 +1,6 @@
 # Book 业务分区
 
-定义Book业务逻辑
+## 定义Book业务逻辑
 
 业务功能: CRUD
 1. 创建书籍(录入)
@@ -9,4 +9,54 @@
 4. Book更新
 5. Book删除
 
-通过Go语言的里面的接口 来定义描述业务功能
\ No newline at end of file
+通过Go语言的里面的接口 来定义描述业务功能
+
+```go
+// book.Service, Book的业务定义
+type Service interface {
+	// 1. 创建书籍(录入)
+	CreateBook(context.Context, *CreateBookRequest) (*Book, error)
+	// 2. Book列表查询
+	QueryBook(context.Context, *QueryBookRequest) (*types.Set[*Book], error)
+	// 3. Book详情查询
+	DescribeBook(context.Context, *DescribeBookRequest) (*Book, error)
+	// 4. Book更新
+	UpdateBook(context.Context, *UpdateBookRequest) (*Book, error)
+	// 5. Book删除
+	DeleteBook(context.Context, *DeleteBookRequest) error
+}
+```
+
+## 业务的具体实现(TDD： Test Drive Develop)
+
+1. BookServiceImpl
+
+```go
+// CreateBook implements book.Service.
+func (b *BookServiceImpl) CreateBook(context.Context, *book.CreateBookRequest) (*book.Book, error) {
+	panic("unimplemented")
+}
+
+// DeleteBook implements book.Service.
+func (b *BookServiceImpl) DeleteBook(context.Context, *book.DeleteBookRequest) error {
+	panic("unimplemented")
+}
+
+// DescribeBook implements book.Service.
+func (b *BookServiceImpl) DescribeBook(context.Context, *book.DescribeBookRequest) (*book.Book, error) {
+	panic("unimplemented")
+}
+
+// QueryBook implements book.Service.
+func (b *BookServiceImpl) QueryBook(context.Context, *book.QueryBookRequest) (*types.Set[*book.Book], error) {
+	panic("unimplemented")
+}
+
+// UpdateBook implements book.Service.
+func (b *BookServiceImpl) UpdateBook(context.Context, *book.UpdateBookRequest) (*book.Book, error) {
+	panic("unimplemented")
+}
+```
+
+编写单元测试
+
diff --git a/book/v4/apps/book/impl/README.md b/book/v4/apps/book/impl/README.md
new file mode 100644
index 0000000..0386943
--- /dev/null
+++ b/book/v4/apps/book/impl/README.md
@@ -0,0 +1,3 @@
+# 业务实现包
+
+ServiceImpl(book.Service)
\ No newline at end of file
diff --git a/book/v4/apps/book/impl/book.go b/book/v4/apps/book/impl/book.go
new file mode 100644
index 0000000..d2baff7
--- /dev/null
+++ b/book/v4/apps/book/impl/book.go
@@ -0,0 +1,49 @@
+package impl
+
+import (
+	"context"
+
+	"122.51.31.227/go-course/go18/book/v3/config"
+	"122.51.31.227/go-course/go18/book/v4/apps/book"
+	"github.com/infraboard/mcube/v2/exception"
+	"github.com/infraboard/mcube/v2/types"
+)
+
+// CreateBook implements book.Service.
+func (b *BookServiceImpl) CreateBook(ctx context.Context, in *book.CreateBookRequest) (*book.Book, error) {
+	// 自定义异常改造， 放到mcube
+	// 自定义异常, exception 包, 统一放到一个公共库里面, mcube
+	if err := in.Validate(); err != nil {
+		return nil, exception.NewBadRequest("校验Book创建失败, %s", err)
+	}
+
+	bookInstance := &book.Book{CreateBookRequest: *in}
+
+	// config对象改造
+	// 数据入库(Grom), 补充自增Id的值
+	if err := config.DB().Save(bookInstance).Error; err != nil {
+		return nil, err
+	}
+
+	return bookInstance, nil
+}
+
+// DeleteBook implements book.Service.
+func (b *BookServiceImpl) DeleteBook(context.Context, *book.DeleteBookRequest) error {
+	panic("unimplemented")
+}
+
+// DescribeBook implements book.Service.
+func (b *BookServiceImpl) DescribeBook(context.Context, *book.DescribeBookRequest) (*book.Book, error) {
+	panic("unimplemented")
+}
+
+// QueryBook implements book.Service.
+func (b *BookServiceImpl) QueryBook(context.Context, *book.QueryBookRequest) (*types.Set[*book.Book], error) {
+	panic("unimplemented")
+}
+
+// UpdateBook implements book.Service.
+func (b *BookServiceImpl) UpdateBook(context.Context, *book.UpdateBookRequest) (*book.Book, error) {
+	panic("unimplemented")
+}
diff --git a/book/v4/apps/book/impl/book_test.go b/book/v4/apps/book/impl/book_test.go
new file mode 100644
index 0000000..b5b4754
--- /dev/null
+++ b/book/v4/apps/book/impl/book_test.go
@@ -0,0 +1,22 @@
+package impl_test
+
+import (
+	"testing"
+
+	"122.51.31.227/go-course/go18/book/v4/apps/book"
+)
+
+//
+
+func TestCreateBook(t *testing.T) {
+	req := book.NewCreateBookRequest()
+	req.SetIsSale(true)
+	req.Title = "Go语言V4"
+	req.Author = "will"
+	req.Price = 10
+	ins, err := svc.CreateBook(ctx, req)
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Log(ins)
+}
diff --git a/book/v4/apps/book/impl/impl.go b/book/v4/apps/book/impl/impl.go
new file mode 100644
index 0000000..d673fb1
--- /dev/null
+++ b/book/v4/apps/book/impl/impl.go
@@ -0,0 +1,18 @@
+package impl
+
+import (
+	"122.51.31.227/go-course/go18/book/v4/apps/book"
+)
+
+// 怎么知道他有没有实现该业务, 可以通过类型约束
+// var _ book.Service = &BookServiceImpl{}
+
+//	&BookServiceImpl 的 nil对象
+//
+// int64(1)  int64 1
+// *BookServiceImpl(nil)
+var _ book.Service = (*BookServiceImpl)(nil)
+
+// Book业务的具体实现
+type BookServiceImpl struct {
+}
diff --git a/book/v4/apps/book/impl/impl_test.go b/book/v4/apps/book/impl/impl_test.go
new file mode 100644
index 0000000..4deca83
--- /dev/null
+++ b/book/v4/apps/book/impl/impl_test.go
@@ -0,0 +1,10 @@
+package impl_test
+
+import (
+	"context"
+
+	"122.51.31.227/go-course/go18/book/v4/apps/book/impl"
+)
+
+var ctx = context.Background()
+var svc = impl.BookServiceImpl{}
diff --git a/book/v4/apps/book/interface.go b/book/v4/apps/book/interface.go
index 2baa575..4cb3a25 100644
--- a/book/v4/apps/book/interface.go
+++ b/book/v4/apps/book/interface.go
@@ -3,6 +3,8 @@ package book
 import (
 	"context"
 
+	"github.com/infraboard/mcube/v2/http/request"
+	"github.com/infraboard/mcube/v2/ioc/config/validator"
 	"github.com/infraboard/mcube/v2/types"
 )
 
@@ -13,8 +15,24 @@ type Service interface {
 	// 2. Book列表查询
 	QueryBook(context.Context, *QueryBookRequest) (*types.Set[*Book], error)
 	// 3. Book详情查询
+	DescribeBook(context.Context, *DescribeBookRequest) (*Book, error)
 	// 4. Book更新
+	UpdateBook(context.Context, *UpdateBookRequest) (*Book, error)
 	// 5. Book删除
+	DeleteBook(context.Context, *DeleteBookRequest) error
+}
+
+type DeleteBookRequest struct {
+	DescribeBookRequest
+}
+
+type UpdateBookRequest struct {
+	DescribeBookRequest
+	CreateBookRequest
+}
+
+type DescribeBookRequest struct {
+	Id uint
 }
 
 type BookSet struct {
@@ -39,6 +57,10 @@ func (b *BookSet) Add(item *Book) {
 // 	b.Items = append(b.Items, item)
 // }
 
+func NewCreateBookRequest() *CreateBookRequest {
+	return (&CreateBookRequest{}).SetIsSale(false)
+}
+
 type CreateBookRequest struct {
 	// type 用于要使用gorm 来自动创建和更新表的时候 才需要定义
 	Title  string  `json:"title"  gorm:"column:title;type:varchar(200)" validate:"required"`
@@ -49,5 +71,29 @@ type CreateBookRequest struct {
 	IsSale *bool `json:"is_sale"  gorm:"column:is_sale"`
 }
 
-type QueryBookRequest struct {
+// 这个请求对象的教育
+func (r *CreateBookRequest) Validate() error {
+	// validate := validator.New()
+	// validate.Struct(r)
+	return validator.Validate(r)
+}
+
+func (r *CreateBookRequest) SetIsSale(v bool) *CreateBookRequest {
+	r.IsSale = &v
+	return r
+}
+
+func NewQueryBookRequest() *QueryBookRequest {
+	return &QueryBookRequest{
+		// PageRequest{PageSize:20, PageNumber: 1}
+		PageRequest: *request.NewDefaultPageRequest(),
+	}
+}
+
+type QueryBookRequest struct {
+	// PageSize   uint
+	// PageNumber uint
+	request.PageRequest
+	// 关键字参数
+	Keywords string `json:"keywords"`
 }
diff --git a/go.mod b/go.mod
index 7d5aec0..0cf3179 100644
--- a/go.mod
+++ b/go.mod
@@ -14,6 +14,7 @@ require (
 )
 
 require (
+	github.com/BurntSushi/toml v1.5.0 // indirect
 	github.com/bytedance/sonic v1.13.2 // indirect
 	github.com/bytedance/sonic/loader v0.2.4 // indirect
 	github.com/cloudwego/base64x v0.1.5 // indirect
@@ -32,6 +33,7 @@ require (
 	github.com/leodido/go-urn v1.4.0 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/pelletier/go-toml/v2 v2.2.3 // indirect
diff --git a/go.sum b/go.sum
index aa990a8..2499427 100644
--- a/go.sum
+++ b/go.sum
@@ -1,3 +1,5 @@
+github.com/BurntSushi/toml v1.5.0 h1:W5quZX/G/csjUnuI8SUYlsHs9M38FC7znL0lIO+DvMg=
+github.com/BurntSushi/toml v1.5.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
 github.com/bytedance/sonic v1.13.2 h1:8/H1FempDZqC4VqjptGo14QQlJx8VdZJegxs6wwfqpQ=
 github.com/bytedance/sonic v1.13.2/go.mod h1:o68xyaF9u2gvVBuGHPlUVCy+ZfmNNO5ETf1+KgkJhz4=
 github.com/bytedance/sonic/loader v0.1.1/go.mod h1:ncP89zfokxS5LZrJxl5z0UJcsk4M4yY2JpfqGeCtNLU=
@@ -54,6 +56,8 @@ github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/
 github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
+github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
diff --git a/skills/mcube/README.md b/skills/mcube/README.md
new file mode 100644
index 0000000..48ef637
--- /dev/null
+++ b/skills/mcube/README.md
@@ -0,0 +1,65 @@
+# 配置(依赖注入)
+
+
+## Config大对象
+
+容易理解, 方便维护,  这个配置就是和项目绑定
+
+```go
+// 这歌对象就是程序配置
+// yaml, toml
+type Config struct {
+	Application *application `toml:"app" yaml:"app" json:"app"`
+	MySQL       *mySQL       `toml:"mysql" yaml:"mysql" json:"mysql"`
+	Log         *Log         `toml:"log" yaml:"log" json:"log"`
+}
+
+```
+
+```yaml
+app:
+  host: 127.0.0.1
+  port: 8080
+mysql:
+  host: 127.0.0.1
+  port: 3306
+  database: go18
+  username: "root"
+  password: "123456"
+  debug: true
+```
+
+## 依赖注入
+
+大对象，没法按照项目需求，自由组装
+
+datasource
+```toml
+[datasource]
+  provider = "mysql"
+  host = "127.0.0.1"
+  port = 3306
+  database = ""
+  username = ""
+  password = ""
+  auto_migrate = false
+  debug = false
+  trace = true
+```
+
+```go
+package main
+
+import (
+	"fmt"
+
+    // 自动解析配置文件里面, 相应的部分
+	"github.com/infraboard/mcube/v2/ioc/config/datasource"
+)
+
+func main() {
+	db := datasource.DB()
+	// 通过db对象进行数据库操作
+	fmt.Println(db)
+}
+```
\ No newline at end of file
diff --git a/skills/mcube/config.go b/skills/mcube/config.go
new file mode 100644
index 0000000..098e631
--- /dev/null
+++ b/skills/mcube/config.go
@@ -0,0 +1,3 @@
+package mcube
+
+// 依赖注入