In stm32_xx_it , I added these lines :
void USARTx_DMA_RX_IRQHandler(void) {
	HAL_DMA_IRQHandler(UartMsgHandle.hdmarx);
}


void USARTx_DMA_TX_IRQHandler(void) {
	HAL_DMA_IRQHandler(UartMsgHandle.hdmatx);
}


void USARTx_IRQHandler(void) {
	HAL_UART_IRQHandler(&UartMsgHandle);
}

And in another file normally ,i changed the hal msp init and deinit like this :

void HAL_UART_MspInit(UART_HandleTypeDef *huart) {
	static DMA_HandleTypeDef hdma_tx;
	static DMA_HandleTypeDef hdma_rx;

	GPIO_InitTypeDef GPIO_InitStruct;

	/*##-1- Enable peripherals and GPIO Clocks #################################*/
	/* Enable GPIO clock */
	USARTx_TX_GPIO_CLK_ENABLE()
	;
	USARTx_RX_GPIO_CLK_ENABLE()
	;
	/* Enable USART1 clock */
	USARTx_CLK_ENABLE()
	;
	/* Enable DMA1 clock */
	__HAL_RCC_DMA1_CLK_ENABLE()
	;
	/*##-2- Configure peripheral GPIO ##########################################*/
	/* UART TX GPIO pin configuration  */
	GPIO_InitStruct.Pin = WiFi_USART_PRINT_TX_PIN;
	GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
	GPIO_InitStruct.Pull = GPIO_PULLUP;
	GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
	GPIO_InitStruct.Alternate = PRINTMSG_USARTx_TX_AF;

	HAL_GPIO_Init(WiFi_USART_PRINT_TX_GPIO_PORT, &GPIO_InitStruct);

	/* UART RX GPIO pin configuration  */
	GPIO_InitStruct.Pin = WiFi_USART_PRINT_RX_PIN;
	GPIO_InitStruct.Alternate = PRINTMSG_USARTx_RX_AF;

	HAL_GPIO_Init(WiFi_USART_PRINT_RX_GPIO_PORT, &GPIO_InitStruct);

	/*##-3- Configure the DMA streams ##########################################*/
	/* Configure the DMA handler for Transmission process */
	hdma_tx.Instance = DMA1_Stream6;

	hdma_tx.Init.Channel = DMA_CHANNEL_4;
	hdma_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
	hdma_tx.Init.PeriphInc = DMA_PINC_DISABLE;
	hdma_tx.Init.MemInc = DMA_MINC_ENABLE;
	hdma_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
	hdma_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
	hdma_tx.Init.Mode = DMA_NORMAL;
	hdma_tx.Init.Priority = DMA_PRIORITY_LOW;
	hdma_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
	hdma_tx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
	hdma_tx.Init.MemBurst = DMA_MBURST_INC4;
	hdma_tx.Init.PeriphBurst = DMA_PBURST_INC4;

	HAL_DMA_Init(&hdma_tx);

	/* Associate the initialized DMA handle to the UART handle */
	__HAL_LINKDMA(huart, hdmatx, hdma_tx);

	/* Configure the DMA handler for reception process */
	hdma_rx.Instance = DMA1_Stream5;

	hdma_rx.Init.Channel = DMA_CHANNEL_4;
	hdma_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
	hdma_rx.Init.PeriphInc = DMA_PINC_DISABLE;
	hdma_rx.Init.MemInc = DMA_MINC_ENABLE;
	hdma_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
	hdma_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
	hdma_rx.Init.Mode = DMA_NORMAL;
	hdma_rx.Init.Priority = DMA_PRIORITY_HIGH;
	hdma_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
	hdma_rx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
	hdma_rx.Init.MemBurst = DMA_MBURST_INC4;
	hdma_rx.Init.PeriphBurst = DMA_PBURST_INC4;

	HAL_DMA_Init(&hdma_rx);

	/* Associate the initialized DMA handle to the the UART handle */
	__HAL_LINKDMA(huart, hdmarx, hdma_rx);

	/*##-4- Configure the NVIC for DMA #########################################*/
	/* NVIC configuration for DMA transfer complete interrupt (USARTx_TX) */
	HAL_NVIC_SetPriority(DMA2_Stream6_IRQn, 0, 1);
	HAL_NVIC_EnableIRQ(DMA2_Stream6_IRQn);

	/* NVIC configuration for DMA transfer complete interrupt (USARTx_RX) */
	HAL_NVIC_SetPriority(DMA2_Stream5_IRQn, 0, 0);
	HAL_NVIC_EnableIRQ(DMA2_Stream5_IRQn);

	/* NVIC configuration for USART TC interrupt */
	HAL_NVIC_SetPriority(USARTx_IRQn, 0, 0);
	HAL_NVIC_EnableIRQ(USARTx_IRQn);
}

/**
 * @brief UART MSP De-Initialization
 *        This function frees the hardware resources used in this example:
 *          - Disable the Peripheral's clock
 *          - Revert GPIO, DMA and NVIC configuration to their default state
 * @param huart: UART handle pointer
 * @retval None
 */
void HAL_UART_MspDeInit(UART_HandleTypeDef *huart) {

	//static DMA_HandleTypeDef hdma_tx;
	//static DMA_HandleTypeDef hdma_rx;
	if (huart == &UartWiFiHandle) {
		USARTx_FORCE_RESET();
		USARTx_RELEASE_RESET();

		HAL_GPIO_DeInit(WiFi_USART_TX_GPIO_PORT, WiFi_USART_TX_PIN);
		HAL_GPIO_DeInit(WiFi_USART_RX_GPIO_PORT, WiFi_USART_RX_PIN);
		//HAL_DMA_DeInit(&hdma_tx);
		/* De-Initialize the DMA Stream associate to reception process */
		//HAL_DMA_DeInit(&hdma_rx);
		/*##-4- Disable the NVIC for DMA ###########################################*/
		HAL_NVIC_DisableIRQ(DMA2_Stream6_IRQn);
		HAL_NVIC_DisableIRQ(DMA2_Stream5_IRQn);
		HAL_NVIC_DisableIRQ(USARTx_IRQn);

		/*##-3- Disable the DMA Streams ############################################*/
		/* De-Initialize the DMA Stream associate to transmission process */

	}
}