{"text_format":"3","workbook":"xls","n_sheets":3,"sheets":["Sheet1","Sheet2","Sheet3"],"read":"whole","date_system":"1900","formulas":"cached_only"}

{"sheet":"Sheet1","index":0,"n_rows":5,"n_cols":6,"rows_kept":5,"flags":["formulas_cached_only"]}
["清单编号","名称","单位","单价","数量","金额"]
["101-1","保险费","元",20000,1,1000]
["101-2","AAA","总额",1200,null,200]
["101-3","BBB","总额",null,2,4000]
["101-4","CCC","总额",2000,3]

{"sheet":"Sheet2","index":1,"n_rows":0,"n_cols":0,"rows_kept":0,"flags":["formulas_cached_only"]}

{"sheet":"Sheet3","index":2,"n_rows":0,"n_cols":0,"rows_kept":0,"flags":["formulas_cached_only"]}