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                            # 導出
1. HSSFWorkbook與SXSSFWorkbook

1.  文件格式  
    ?HSSFWorkbook導出的Excel文件以.xls結尾，支持Excel2003  
    SXSSFWorkbook導出的Excel文件以.xlsx結尾，支持Excel2007 Excel2010之后的版本?
2.  最大支持條數  
    
    HSSFWorkbook最大支持65535條數數據
    
    SXSSFWorkbook還沒遇到限制
    
3.  執行效率  
    SXSSFWorkbook的創建速度比HSSFWorkbook快
4.  隨著數據量的增加，數據庫的查詢速度越來越慢，并且從發起一次導出請求到結束的整個過程中數據庫的查詢時間占最大。
# 寫入

                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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