feat:read settings from config and save in a struct

backend/app/controller/foo.go

@@ -2,8 +2,11 @@ package controller
 
 import (
 	"backend/model"
+	"io"
 	"math/rand"
+	"mime/multipart"
 	"net/http"
+	"strconv"
 	"time"
 
 	"github.com/labstack/echo/v4"
@@ -97,6 +100,40 @@ func SetCookie(c echo.Context, cookie *http.Cookie, sid string, maxAge int, time
 	return nil
 }
 
+func FileRead(file *multipart.FileHeader) (string, int, error) {
+	// 打开用户上传的文件
+	src, err := file.Open()
+	if err != nil {
+		logrus.Println(err)
+		return "", 0, err
+	}
+	defer src.Close()
+	//读取文件内容
+	var data []byte
+	size := 0
+	buf := make([]byte, 1024)
+	for {
+		n, err := src.Read(buf)
+		if err != nil && err != io.EOF {
+			logrus.Panic(err)
+			return "", 0, err
+		}
+		//说明读取结束
+		if n == 0 {
+			break
+		}
+		//读取到最终的缓冲区中
+		data = append(data, buf[:n]...)
+		size = size + n
+		if size > Settings.MaxSize+1024*2 {
+			break // 超过大小
+		}
+
+	}
+	str := string(data)
+	return str, size, nil
+}
+
 /*
  * 判断文件大小是否超过阈值(threshold,单位B)
  */
@@ -124,7 +161,7 @@ func DBupdate(c echo.Context, info *Upload) (string, string) {
 	sid, _ = newAuthenticate(sid, url, url, info.Expiration, true)
 	if info.MaxView == 0 {
 		//num,_=strconv.ParseUint(GetSetting("maxDefaultAccess"), 10, 64)
-		info.MaxView = 30 // 设置最大默认可访问次数
+		info.MaxView = uint(Settings.MaxDefaultView) // 设置最大默认可访问次数
 	}
 	//model.Savetext(info.Content, info.MaxView, info.Passwd, info.Expiration, url, info.Type, info.Name,info.HighLight)
 	return sid, url
@@ -144,8 +181,8 @@ func timeAssign(oriTime time.Time) time.Time {
 
 // ===========sumdry=======================
 // 从config读取数据
-func GetSetting(key string) (value string) {
-	// config
+// 从配置文件里面读取设置
+func InitSettings() {
 	viper.SetConfigName("config")
 	viper.SetConfigType("yaml")
 	viper.AddConfigPath("./")
@@ -155,7 +192,18 @@ func GetSetting(key string) (value string) {
 	}
 	// connect to database
 	logInfo := viper.GetStringMapString("setting")
-	return logInfo[key]
+	Settings.Url = logInfo["url"]
+	if Settings.Url == "" {
+		logrus.Fatal("can not get domain name from config")
+	}
+	Settings.MaxDefaultView, err = strconv.Atoi(logInfo["maxdefaultview"])
+	if err != nil {
+		logrus.Fatal(err)
+	}
+	Settings.MaxSize, err = strconv.Atoi(logInfo["maxsize"])
+	if err != nil {
+		logrus.Fatal(err)
+	}
 }
 
 /*

backend/app/controller/interface.go → backend/app/controller/handler.go

@@ -11,30 +11,6 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
-type Upload struct {
-	Content    string    `json:"Content" form:"Content" query:"Content"`
-	Passwd     string    `json:"Passwd" form:"Passwd" query:"Passwd"`
-	Name       string    `json:"Name" form:"Name" query:"Name"`
-	Type       string    `json:"Type" form:"Type" query:"Type"`
-	HighLight  bool      `json:"HighLight" form:"HighLight" query:"HighLight"`
-	Expiration time.Time `json:"Expiration" form:"Expiration" query:"Expiration"`
-	MaxAge     int       `json:"MaxAge" form:"MaxAge" query:"MaxAge"`    // 用户指定的时间期限
-	MaxView    uint      `json:"MaxView" form:"MaxView" query:"MaxView"` // 文件最大可访问次数
-	//Expiry     time.Time `json:"expiry"` // 有效期
-	//Content string `json:"content"`
-}
-
-type Download struct {
-	Passwd string `json:"Passwd" form:"Passwd" query:"Passwd"`
-	Url    string `json:"Url" form:"Url" query:"Url"`
-}
-
-type Msg struct {
-	Name    string
-	Type    string
-	Content string
-}
-
 func Ping(c echo.Context) error {
 	// just test
 	return response.SendResponse(c, http.StatusOK, "", "pong!")
@@ -86,16 +62,25 @@ func FileUp(c echo.Context) error {
 		return err
 	}
 	info.Name = file.Filename
-	info.Content, err = FileRead(file)
+	data := new(Msg2)
 
-	if overflow(info.Content, 8*1024*1024) {
+	info.Content, data.Size, _ = FileRead(file)
+	info.MaxView = uint(Settings.MaxDefaultView)
+
+	if data.Size > 8*1024*1024 {
 		return response.SendResponse(c, http.StatusForbidden, "error:文件上传失败: 文件大小超过8MB.", "")
 	}
 
 	// 更新数据库
-	_, url := DBupdate(c, info) // 不分配uid
+	_, data.Url = DBupdate(c, info) // 不分配uid
+	data.Name = info.Name
+	dataj, err := json.Marshal(data)
+	if err != nil {
+		logrus.Println(err)
+		return err
+	}
 	//return response.SendResponse2(c, http.StatusOK, "文件上传成功", info.TextName, GetTextContentType(info.TextType), url)
-	return response.SendResponse(c, http.StatusOK, "文件上传成功", url)
+	return response.SendResponse(c, http.StatusOK, "文件上传成功", string(dataj))
 }
 
 /*
@@ -132,8 +117,8 @@ func Down(c echo.Context) error {
 		Data.Type = model.Find1(info.Url, "TextType")   // 文件类型
 		Data.Type = GetFileContentType(Data.Type)
 		Data.Name = model.Find1(info.Url, "TextName")
-		data, _ := json.Marshal(Data)                                             // 文件名
-		return response.SendResponse(c, http.StatusOK, cookieMsg+"success", data) // 返回数据
+		dataj, _ := json.Marshal(Data)                                                     // 文件名
+		return response.SendResponse(c, http.StatusOK, cookieMsg+"success", string(dataj)) // 返回数据
 	case 2:
 		return response.SendResponse(c, http.StatusGone, cookieMsg+"error:内容过期", "") //410
 	case 3:

backend/app/controller/struct.go

+package controller
+
+import (
+	"time"
+)
+
+type Upload struct {
+	Content    string    `json:"Content" form:"Content" query:"Content"`
+	Passwd     string    `json:"Passwd" form:"Passwd" query:"Passwd"`
+	Name       string    `json:"Name" form:"Name" query:"Name"`
+	Type       string    `json:"Type" form:"Type" query:"Type"`
+	HighLight  bool      `json:"HighLight" form:"HighLight" query:"HighLight"`
+	Expiration time.Time `json:"Expiration" form:"Expiration" query:"Expiration"`
+	MaxAge     int       `json:"MaxAge" form:"MaxAge" query:"MaxAge"`    // 用户指定的时间期限
+	MaxView    uint      `json:"MaxView" form:"MaxView" query:"MaxView"` // 文件最大可访问次数
+	//Expiry     time.Time `json:"expiry"` // 有效期
+	//Content string `json:"content"`
+}
+
+type Download struct {
+	Passwd string `json:"Passwd" form:"Passwd" query:"Passwd"`
+	Url    string `json:"Url" form:"Url" query:"Url"`
+}
+
+type Msg struct {
+	Name    string
+	Type    string
+	Content string
+}
+
+type Msg2 struct {
+	Url  string
+	Name string
+	Size int
+}
+
+// 从config文件获取
+type Setting struct {
+	Url            string // 配置的域名
+	MaxDefaultView int    // 单文件默认最大可访问次数
+	MaxSize        int    // 文件最大可上传大小（单位B）
+}
+
+var Settings Setting

backend/app/init.go

@@ -21,7 +21,7 @@ func InitWebFramework() {
 }
 
 func StartServer() {
-	e.Logger.Fatal(e.Start(controller.GetSetting("url"))) // 启动服务，注意默认端口80不能省略
+	e.Logger.Fatal(e.Start(controller.Settings.Url)) // 启动服务，注意默认端口80不能省略
 	//e.Logger.Fatal(e.Start("127.0.0.1:80")) // 启动服务，注意默认端口80不能省略
 	//e.Logger.Fatal(e.Start("http://xlab.zju.edu.cn/test/pastebin/group-1:80")) // 启动服务，注意默认端口80不能省略,需要域名解析，config
 }

backend/app/response/reponse.go

@@ -7,26 +7,9 @@ import (
 )
 
 type Response struct {
-	Code int         `json:"code"`
-	Msg  string      `json:"msg"`
-	Type string      `json:"type"`
-	Data interface{} `json:"data"`
-}
-
-type Response2 struct {
-	Code int    `json:"code"`
-	Msg  string `json:"msg"`
-	Name string `json:"fileName"`
-	Type string `json:"fileType"`
-	Url  string `json:"url"`
-}
-
-type Response3 struct {
-	Code int         `json:"code"`
-	Msg  string      `json:"msg"`
-	Name string      `json:"name"`
-	Type string      `json:"type"`
-	Data interface{} `json:"data"`
+	Code int         `json:"Code"`
+	Msg  string      `json:"Msg"`
+	Data interface{} `json:"Data"`
 }
 
 func SendResponse(c echo.Context, code int, msg string, data ...interface{}) error {
@@ -37,26 +20,6 @@ func SendResponse(c echo.Context, code int, msg string, data ...interface{}) err
 	})
 }
 
-func SendResponse2(c echo.Context, code int, msg string, name string, typ string, url string, data ...interface{}) error {
-	return c.JSON(http.StatusOK, Response2{
-		Code: code,
-		Msg:  msg,
-		Name: name,
-		Type: typ,
-		Url:  url,
-	})
-}
-
-func SendResponse3(c echo.Context, code int, msg string, name string, typ string, data ...interface{}) error {
-	return c.JSON(http.StatusOK, Response3{
-		Code: code,
-		Msg:  msg,
-		Name: name,
-		Type: typ,
-		Data: data,
-	})
-}
-
 // 返回err
 func SendResponse4(c echo.Context, err error) error {
 	return c.JSON(http.StatusBadRequest, err.Error())

backend/main.go

@@ -7,11 +7,13 @@ package main
 
 import (
 	"backend/app"
+	"backend/app/controller"
 	"backend/model"
 )
 
 func main() {
-	app.InitLogger() // 初始化logger设置
+	app.InitLogger()          // 初始化logger设置
+	controller.InitSettings() // 从配置文件中获取设置
 	model.Init()
 	app.InitWebFramework()
 	app.StartServer()