diff --git a/pkg/app/app.go b/pkg/app/app.go
new file mode 100644
index 0000000..cebc839
--- /dev/null
+++ b/pkg/app/app.go
@@ -0,0 +1,49 @@
+package app
+
+import (
+	"blog/pkg/errorcode"
+	"github.com/gin-gonic/gin"
+	"net/http"
+)
+
+type Response struct {
+	Ctx *gin.Context
+}
+
+type Pager struct {
+	Page      int `json:"page"`
+	PageSize  int `json:"page_size"`
+	TotalRows int `json:"total_rows"`
+}
+
+func NewResponse(ctx *gin.Context) *Response {
+	return &Response{Ctx: ctx}
+}
+
+func (r *Response) ToResponse(data interface{}) {
+	if data == nil {
+		data = gin.H{}
+	}
+	r.Ctx.JSON(http.StatusOK, data)
+}
+
+func (r *Response) ToResponseList(list interface{}, totalRows int) {
+	r.Ctx.JSON(http.StatusOK, gin.H{
+		"list": list,
+		"pager": Pager{
+			Page:      GetPage(r.Ctx),
+			PageSize:  GetPageSize(r.Ctx),
+			TotalRows: totalRows,
+		},
+	})
+}
+
+func (r *Response) ToErrorResponse(err *errorcode.Error) {
+	response := gin.H{"code": err.Code(), "msg": err.Msg()}
+	details := err.Details()
+	if len(details) > 0 {
+		response["details"] = details
+	}
+
+	r.Ctx.JSON(err.StatusCode(), response)
+}
diff --git a/pkg/app/form.go b/pkg/app/form.go
new file mode 100644
index 0000000..4dab37e
--- /dev/null
+++ b/pkg/app/form.go
@@ -0,0 +1,56 @@
+package app
+
+import (
+	"github.com/gin-gonic/gin"
+	ut "github.com/go-playground/universal-translator"
+	val "github.com/go-playground/validator/v10"
+	"strings"
+)
+
+type ValidError struct {
+	Key     string
+	Message string
+}
+
+type ValidErrors []*ValidError
+
+func (v *ValidError) Error() string {
+	return v.Message
+}
+
+func (v ValidErrors) Error() string {
+	return strings.Join(v.Errors(), ",")
+}
+
+func (v ValidErrors) Errors() []string {
+	var errs []string
+	for _, err := range v {
+		errs = append(errs, err.Error())
+	}
+
+	return errs
+}
+
+func BindAndValid(c *gin.Context, v interface{}) (bool, ValidErrors) {
+	var errs ValidErrors
+	err := c.ShouldBind(v)
+	if err != nil {
+		v := c.Value("trans")
+		trans, _ := v.(ut.Translator)
+		verrs, ok := err.(val.ValidationErrors)
+		if !ok {
+			return false, errs
+		}
+
+		for key, value := range verrs.Translate(trans) {
+			errs = append(errs, &ValidError{
+				Key:     key,
+				Message: value,
+			})
+		}
+
+		return false, errs
+	}
+
+	return true, nil
+}
diff --git a/pkg/app/pagination.go b/pkg/app/pagination.go
new file mode 100644
index 0000000..9050fb8
--- /dev/null
+++ b/pkg/app/pagination.go
@@ -0,0 +1,37 @@
+package app
+
+import (
+	"blog/global"
+	"blog/pkg/convert"
+	"github.com/gin-gonic/gin"
+)
+
+func GetPage(c *gin.Context) int {
+	page := convert.StrTo(c.Query("page")).MustInt()
+	if page <= 0 {
+		return 1
+	}
+
+	return page
+}
+
+func GetPageSize(c *gin.Context) int {
+	pageSize := convert.StrTo(c.Query("page_size")).MustInt()
+	if pageSize <= 0 {
+		return global.AppSetting.DefaultPageSize
+	}
+	if pageSize > global.AppSetting.MaxPageSize {
+		return global.AppSetting.MaxPageSize
+	}
+
+	return pageSize
+}
+
+func GetPageOffset(page, pageSize int) int {
+	result := 0
+	if page > 0 {
+		result = (page - 1) * pageSize
+	}
+
+	return result
+}
diff --git a/pkg/convert/convert.go b/pkg/convert/convert.go
new file mode 100644
index 0000000..52e75fa
--- /dev/null
+++ b/pkg/convert/convert.go
@@ -0,0 +1,29 @@
+package convert
+
+import "strconv"
+
+type StrTo string
+
+func (s StrTo) String() string {
+	return string(s)
+}
+
+func (s StrTo) Int() (int, error) {
+	v, err := strconv.Atoi(s.String())
+	return v, err
+}
+
+func (s StrTo) MustInt() int {
+	v, _ := s.Int()
+	return v
+}
+
+func (s StrTo) UInt32() (uint32, error) {
+	v, err := strconv.Atoi(s.String())
+	return uint32(v), err
+}
+
+func (s StrTo) MustUInt32() uint32 {
+	v, _ := s.UInt32()
+	return v
+}
diff --git a/pkg/errorcode/common_code.go b/pkg/errorcode/common_code.go
new file mode 100644
index 0000000..0eac776
--- /dev/null
+++ b/pkg/errorcode/common_code.go
@@ -0,0 +1,87 @@
+package errorcode
+
+import (
+	"fmt"
+	"net/http"
+)
+
+var (
+	Success                   = NewError(0, "成功")
+	ServerError               = NewError(10000000, "服务内部错误")
+	InvalidParams             = NewError(10000001, "入参错误")
+	NotFound                  = NewError(10000002, "找不到")
+	UnauthorizedAuthNotExist  = NewError(10000003, "鉴权失败，找不到对应的 AppKey 和 AppSecret")
+	UnauthorizedTokenError    = NewError(10000004, "鉴权失败，Token 错误")
+	UnauthorizedTokenTimeout  = NewError(10000005, "鉴权失败，Token 超时")
+	UnauthorizedTokenGenerate = NewError(10000006, "鉴权失败，Token 生成失败")
+	TooManyRequests           = NewError(10000007, "请求过多")
+)
+
+type Error struct {
+	code    int      `json:"code"`
+	msg     string   `json:"msg"`
+	details []string `json:"details"`
+}
+
+var codes = map[int]string{}
+
+func NewError(code int, msg string) *Error {
+	if _, ok := codes[code]; ok {
+		panic(fmt.Sprintf("错误码 %d 已经存在，请更换一个", code))
+	}
+	codes[code] = msg
+	return &Error{code: code, msg: msg}
+}
+
+func (e *Error) Error() string {
+	return fmt.Sprintf("错误码：%d, 错误信息:：%s", e.Code(), e.Msg())
+}
+
+func (e *Error) Code() int {
+	return e.code
+}
+
+func (e *Error) Msg() string {
+	return e.msg
+}
+
+func (e *Error) Msgf(args []interface{}) string {
+	return fmt.Sprintf(e.msg, args...)
+}
+
+func (e *Error) Details() []string {
+	return e.details
+}
+
+func (e *Error) WithDetails(details ...string) *Error {
+	newError := *e
+	newError.details = []string{}
+	for _, d := range details {
+		newError.details = append(newError.details, d)
+	}
+
+	return &newError
+}
+
+func (e *Error) StatusCode() int {
+	switch e.Code() {
+	case Success.Code():
+		return http.StatusOK
+	case ServerError.Code():
+		return http.StatusInternalServerError
+	case InvalidParams.Code():
+		return http.StatusBadRequest
+	case UnauthorizedAuthNotExist.Code():
+		fallthrough
+	case UnauthorizedTokenError.Code():
+		fallthrough
+	case UnauthorizedTokenGenerate.Code():
+		fallthrough
+	case UnauthorizedTokenTimeout.Code():
+		return http.StatusUnauthorized
+	case TooManyRequests.Code():
+		return http.StatusTooManyRequests
+	}
+
+	return http.StatusInternalServerError
+}
diff --git a/pkg/errorcode/module_code.go b/pkg/errorcode/module_code.go
new file mode 100644
index 0000000..d5600de
--- /dev/null
+++ b/pkg/errorcode/module_code.go
@@ -0,0 +1,10 @@
+package errorcode
+
+var (
+	ErrorGetTagListFail = NewError(20010001, "获取标签列表失败")
+	ErrorCreateTagFail  = NewError(20010002, "创建标签失败")
+	ErrorUpdateTagFail  = NewError(20010003, "更新标签失败")
+	ErrorDeleteTagFail  = NewError(20010004, "删除标签失败")
+	ErrorCountTagFail   = NewError(20010005, "统计标签失败")
+	ErrorUploadFileFail = NewError(20030001, "上传文件失败")
+)
diff --git a/pkg/logger/logger.go b/pkg/logger/logger.go
new file mode 100644
index 0000000..a9b13cd
--- /dev/null
+++ b/pkg/logger/logger.go
@@ -0,0 +1,165 @@
+package logger
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"log"
+	"runtime"
+	"time"
+)
+
+type Level int8
+
+type Fields map[string]interface{}
+
+const (
+	LevelDebug Level = iota
+	LevelInfo
+	LevelWarn
+	LevelError
+	LevelFatal
+	LevelPanic
+)
+
+func (l Level) String() string {
+	switch l {
+	case LevelDebug:
+		return "debug"
+	case LevelInfo:
+		return "info"
+	case LevelWarn:
+		return "warn"
+	case LevelError:
+		return "error"
+	case LevelFatal:
+		return "fatal"
+	case LevelPanic:
+		return "panic"
+	}
+	return ""
+}
+
+type Logger struct {
+	newLogger *log.Logger
+	ctx       context.Context
+	fields    Fields
+	callers   []string
+}
+
+func NewLogger(w io.Writer, prefix string, flag int) *Logger {
+	l := log.New(w, prefix, flag)
+	return &Logger{newLogger: l}
+}
+
+func (l *Logger) clone() *Logger {
+	nl := *l
+	return &nl
+}
+
+func (l *Logger) WithFields(f Fields) *Logger {
+	ll := l.clone()
+	if ll.fields == nil {
+		ll.fields = make(Fields)
+	}
+	for k, v := range f {
+		ll.fields[k] = v
+	}
+	return ll
+}
+
+func (l *Logger) WithContext(ctx context.Context) *Logger {
+	ll := l.clone()
+	ll.ctx = ctx
+	return ll
+}
+
+func (l *Logger) WithCaller(skip int) *Logger {
+	ll := l.clone()
+	pc, file, line, ok := runtime.Caller(skip)
+	if ok {
+		f := runtime.FuncForPC(pc)
+		ll.callers = []string{fmt.Sprintf("%s: %d %s", file, line, f.Name())}
+	}
+
+	return ll
+}
+
+func (l *Logger) WithCallersFrames() *Logger {
+	maxCallerDepth := 25
+	minCallerDepth := 1
+	callers := []string{}
+	pcs := make([]uintptr, maxCallerDepth)
+	depth := runtime.Callers(minCallerDepth, pcs)
+	frames := runtime.CallersFrames(pcs[:depth])
+	for frame, more := frames.Next(); more; frame, more = frames.Next() {
+		callers = append(callers, fmt.Sprintf("%s: %d %s", frame.File, frame.Line, frame.Function))
+		if !more {
+			break
+		}
+	}
+	ll := l.clone()
+	ll.callers = callers
+	return ll
+}
+
+func (l *Logger) JSONFormat(level Level, message string) map[string]interface{} {
+	data := make(Fields, len(l.fields)+4)
+	data["level"] = level.String()
+	data["time"] = time.Now().Local().UnixNano()
+	data["message"] = message
+	data["callers"] = l.callers
+	if len(l.fields) > 0 {
+		for k, v := range l.fields {
+			if _, ok := data[k]; !ok {
+				data[k] = v
+			}
+		}
+	}
+
+	return data
+}
+
+func (l *Logger) Output(level Level, message string) {
+	body, _ := json.Marshal(l.JSONFormat(level, message))
+	content := string(body)
+	switch level {
+	case LevelDebug:
+		l.newLogger.Print(content)
+	case LevelInfo:
+		l.newLogger.Print(content)
+	case LevelWarn:
+		l.newLogger.Print(content)
+	case LevelError:
+		l.newLogger.Print(content)
+	case LevelFatal:
+		l.newLogger.Fatal(content)
+	case LevelPanic:
+		l.newLogger.Panic(content)
+	}
+}
+
+func (l *Logger) Info(v ...interface{}) {
+	l.Output(LevelInfo, fmt.Sprint(v...))
+}
+
+func (l *Logger) Infof(format string, v ...interface{}) {
+	l.Output(LevelInfo, fmt.Sprintf(format, v...))
+}
+
+func (l *Logger) Fatal(v ...interface{}) {
+	l.Output(LevelFatal, fmt.Sprint(v...))
+}
+
+func (l *Logger) Fatalf(format string, v ...interface{}) {
+	l.Output(LevelFatal, fmt.Sprintf(format, v...))
+}
+
+func (l *Logger) Error(v ...interface{}) {
+	l.Output(LevelError, fmt.Sprint(v...))
+}
+
+func (l *Logger) Errorf(format string, v ...interface{}) {
+	l.Output(LevelError, fmt.Sprintf(format, v...))
+}
diff --git a/pkg/setting/section.go b/pkg/setting/section.go
new file mode 100644
index 0000000..d3594cc
--- /dev/null
+++ b/pkg/setting/section.go
@@ -0,0 +1,44 @@
+package setting
+
+import "time"
+
+type ServerSettingS struct {
+	RunMode      string
+	HttpPort     string
+	ReadTimeout  time.Duration
+	WriteTimeout time.Duration
+}
+
+type AppSettingS struct {
+	DefaultPageSize      int
+	MaxPageSize          int
+	LogSavePath          string
+	LogFileName          string
+	LogFileExt           string
+	UploadSavePath       string
+	UploadServerUrl      string
+	UploadImageMaxSize   int
+	UploadImageAllowExts []string
+}
+
+type DatabaseSettingS struct {
+	DBType       string
+	UserName     string
+	Password     string
+	Host         string
+	DBName       string
+	TablePrefix  string
+	Charset      string
+	ParseTime    bool
+	MaxIdleConns int
+	MaxOpenConns int
+}
+
+func (s *Setting) ReadSection(k string, v interface{}) error {
+	err := s.vp.UnmarshalKey(k, v)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
diff --git a/pkg/setting/setting.go b/pkg/setting/setting.go
new file mode 100644
index 0000000..60fc934
--- /dev/null
+++ b/pkg/setting/setting.go
@@ -0,0 +1,20 @@
+package setting
+
+import "github.com/spf13/viper"
+
+type Setting struct {
+	vp *viper.Viper
+}
+
+func NewSetting() (*Setting, error) {
+	vp := viper.New()
+	vp.SetConfigName("config")
+	vp.AddConfigPath("configs/")
+	vp.SetConfigType("yaml")
+	err := vp.ReadInConfig()
+	if err != nil {
+		return nil, err
+	}
+
+	return &Setting{vp}, nil
+}
diff --git a/pkg/upload/file.go b/pkg/upload/file.go
new file mode 100644
index 0000000..af4b9a2
--- /dev/null
+++ b/pkg/upload/file.go
@@ -0,0 +1,101 @@
+package upload
+
+import (
+	"blog/global"
+	"blog/pkg/util"
+	"io"
+	"io/ioutil"
+	"mime/multipart"
+	"os"
+	"path"
+	"strings"
+)
+
+type FileType int
+
+const (
+	TypeImage FileType = iota + 1
+	TypeExcel
+	TypeTxt
+)
+
+func GetFileName(name string) string {
+	ext := GetFileExt(name)
+	fileName := strings.TrimSuffix(name, ext)
+	fileName = util.EncodeMD5(fileName)
+
+	return fileName + ext
+}
+
+func GetFileExt(name string) string {
+	return path.Ext(name)
+}
+
+func GetSavePath() string {
+	return global.AppSetting.UploadSavePath
+}
+
+func CheckSavePath(dst string) bool {
+	_, err := os.Stat(dst)
+	return os.IsNotExist(err)
+}
+
+func CheckContainExt(t FileType, name string) bool {
+	ext := GetFileExt(name)
+	ext = strings.ToUpper(ext)
+	switch t {
+	case TypeImage:
+		for _, allowExt := range global.AppSetting.UploadImageAllowExts {
+			if strings.ToUpper(allowExt) == ext {
+				return true
+			}
+		}
+
+	}
+
+	return false
+}
+
+func CheckMaxSize(t FileType, f multipart.File) bool {
+	content, _ := ioutil.ReadAll(f)
+	size := len(content)
+	switch t {
+	case TypeImage:
+		if size >= global.AppSetting.UploadImageMaxSize*1024*1024 {
+			return true
+		}
+	}
+
+	return false
+}
+
+func CheckPermission(dst string) bool {
+	_, err := os.Stat(dst)
+	return os.IsPermission(err)
+}
+
+func CreateSavePath(dst string, perm os.FileMode) error {
+	err := os.MkdirAll(dst, perm)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func SaveFile(file *multipart.FileHeader, dst string) error {
+	src, err := file.Open()
+	if err != nil {
+		return err
+	}
+	defer src.Close()
+
+	out, err := os.Create(dst)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+
+	_, err = io.Copy(out, src)
+	return err
+}
diff --git a/pkg/util/md5.go b/pkg/util/md5.go
new file mode 100644
index 0000000..8a00f54
--- /dev/null
+++ b/pkg/util/md5.go
@@ -0,0 +1,13 @@
+package util
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+)
+
+func EncodeMD5(value string) string {
+	m := md5.New()
+	m.Write([]byte(value))
+
+	return hex.EncodeToString(m.Sum(nil))
+}