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                            一. 用戶點擊獲取驗證碼,發送手機號到后臺  
二. 檢查請求頻率  
>1. 檢測手機號/郵箱是否存在 
>2. 檢查驗證碼請求頻率

三. 后臺生成驗證碼  
四. 用Redis保存驗證碼及手機號  
五. 用短信發送平臺的接口發送出去  
六. 獲取用戶輸入的驗證碼碼及手機號   
七. 取出Redis保存的內容   
八. 對比驗證  
>1. 檢測是否超時  
>2. 檢測驗證碼是否正確
>3. 不管正確與否,每個驗證碼只驗證一次(Redis有自動刪除機制)  

九. 返回信息, 結束 
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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