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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                [TOC] ## Gin HandlerFunc包裝 ``` func LoginHandler(c *gin.Context) { // 參數綁定 var req model.LoginReq if err := c.ShouldBindJSON(&req); err != nil { result.Failure(c, result.ErrCodeInvalidParameter) return } // 調用服務 var loginService service.LoginService rsp, err := loginService.Login(&req) // 結果處理 if err != nil { result.Failure(c, err) return } result.Success(c, rsp) } ``` 但是由于我們的服務、請求、響應、錯誤碼結構都是統一的,對于不同服務的handler,代碼除了在請求參數類型不同外,其余都是一樣的 所以可以使用反射的方式實現 ``` func WrapService(service interface{}) func(*gin.Context) { return func(c *gin.Context) { // 參數綁定 s := reflect.TypeOf(service) reqPointType := s.In(0) reqStructType := reqPointType.Elem() req := reflect.New(reqStructType) if err := c.ShouldBindJSON(req.Interface()); err != nil { result.Failure(c, result.ErrCodeInvalidParameter) return } // 調用服務 params := []reflect.Value{reflect.ValueOf(req.Interface())} rets := reflect.ValueOf(service).Call(params) // 結果處理 if !rets[1].IsNil() { result.Failure(c, rets[1].Interface().(result.Error)) return } result.Success(c, rets[0].Interface()) } } ```
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