增加跨域配置，以及增加配置说明

application.go

@@ -221,25 +221,31 @@ func (this *Application) SetConfig(configPath ...string) {
 
 	//文件如果损坏则不写入配置防止配置文件数据丢失
 	if this.Error.GetError() == nil {
-		var out bytes.Buffer
+		var configByte bytes.Buffer
 
-		err = json.Indent(&out, []byte(this.Config.ToJsonString()), "", "\t")
+		err = json.Indent(&configByte, []byte(this.Config.ToJsonString()), "", "\t")
 		//判断配置文件是否序列有变化有则修改配置，五则不变
 		//fmt.Println(len(btes))
-		if len(btes) != 0 && out.String() == string(btes) {
+		if len(btes) != 0 && configByte.String() == string(btes) {
 			return
 		}
-
-		err = ioutil.WriteFile(this.configPath, out.Bytes(), os.ModeAppend)
-
+		//写入配置说明
+		var configNoteByte bytes.Buffer
+		json.Indent(&configNoteByte, []byte(ConfigNote.ToJsonString()), "", "\t")
+		ioutil.WriteFile(filepath.Dir(this.configPath)+"/confignote.json", configNoteByte.Bytes(), os.ModeAppend)
+		//写入配置
+		err = ioutil.WriteFile(this.configPath, configByte.Bytes(), os.ModeAppend)
 		if err != nil {
 			os.MkdirAll(filepath.Dir(this.configPath), os.ModeDir)
 			os.Create(this.configPath)
-			err = ioutil.WriteFile(this.configPath, out.Bytes(), os.ModeAppend)
-
+			err = ioutil.WriteFile(this.configPath, configByte.Bytes(), os.ModeAppend)
 			if err != nil {
 				this.Error.SetError(err)
 			}
+			//写入配置说明
+			os.Create(filepath.Dir(this.configPath) + "/confignote.json")
+			ioutil.WriteFile(filepath.Dir(this.configPath)+"/confignote.json", configNoteByte.Bytes(), os.ModeAppend)
+
 		}
 
 	}
@@ -322,6 +328,8 @@ func (this *Application) handler(w http.ResponseWriter, req *http.Request) {
 	//url去掉参数并序列化
 	context.HandlerStr, context.RouterString = this.urlSer(context.HandlerStr)
 
+	//跨域设置
+	CrossDomain(&context)
 	//访问拦截true继续false暂停
 	connectListenerLen := len(this.connectListener)
 	if connectListenerLen != 0 {
@@ -402,3 +410,46 @@ func (this *Application) handler(w http.ResponseWriter, req *http.Request) {
 	http.ServeFile(w, req, path)
 
 }
+
+func CrossDomain(this *Context) {
+	//没有跨域设置
+	if this.Config.GetString("crossDomain") == "" {
+		return
+	}
+
+	header := this.Resp.Header()
+	header.Set("Access-Control-Allow-Origin", "*")
+	header.Set("Access-Control-Allow-Methods", "*")
+	header.Set("Access-Control-Allow-Credentials", "true")
+	header.Set("Access-Control-Expose-Headers", "*")
+	header.Set("Access-Control-Allow-Headers", "X-Requested-With,Content-Type,Access-Token")
+
+	if this.Config.GetString("crossDomain") != "*" {
+		header.Set("Access-Control-Allow-Origin", this.Config.GetString("crossDomain"))
+		return
+	}
+
+	origin := this.Req.Header.Get("Origin")
+	if origin != "" {
+		header.Set("Access-Control-Allow-Origin", origin)
+		return
+	}
+
+	refer := this.Req.Header.Get("Referer")
+	if refer != "" {
+		tempInt := 0
+		lastInt := strings.IndexFunc(refer, func(r rune) bool {
+			if r == '/' && tempInt > 8 {
+				return true
+			}
+			tempInt++
+			return false
+		})
+
+		if lastInt < 0 {
+			lastInt = len(refer)
+		}
+		refer = Substr(refer, 0, lastInt)
+		header.Set("Access-Control-Allow-Origin", refer)
+	}
+}