OpenCSV 實現CSV的匯入匯出

本文將介紹以下內容

//***********************************====position******************************====//

//通過position形式
//實體內的註解，基於position
@csvbindbyposition
(position =0)
@excel
(iswrap =
false
,name =
"樣例"
,ordernum =
"1",width =30)
private string demo;
public
static
list
readdatafromlocalpathwithposition
(class
clazz, string filepath)
catch
(filenotfoundexception e)}if
(collectionutils.
isnotempty
(parseresult)
)return collections.
emptylist()
;}//***********************************====header******************************====//
@csvcustombindbyname
(column =
"num"
,converter = convertcsvstringtolong.
class
)@excel
(iswrap =
false
,name =
"人數"
,ordernum =
"4",width =20)
private long num;
//convertcsvstringtolong是自定義的型別轉換，僅需要繼承abstractbeanfield即可，自行實現型別的轉換
public
class
convertcsvstringtolong
extends
abstractbeanfield
}//以下讀取時指定編碼utf-8，建議讀取和寫入的時候統一指定編碼，避免出現中文亂碼
public
static
list
readdatafromlocalpathwithheader
(class
clazz, string filepath)
catch
(filenotfoundexception e)
finally
if(fin != null)
}catch
(exception e)}}
if(collectionutils.
isnotempty
(parseresult)
)return collections.
emptylist()
;}

public

static
void
writedatatocsvfile
(list
datalist,class
clazz, string finalpath)))
;// 設定顯示的順序
new()
;settype
(clazz)
;// 寫表頭
csvwriter csvwriter =
newcsvwriter
(writer)
; statefulbeantocsv
beantocsv =
newstatefulbeantocsvbuilder
(writer)..
withquotechar
(csvwriter.no_quote_character)
.withseparator
(default_biz_seperator)
.withescapechar
('\\').
build()
; beantocsv.
write
(datalist)
; csvwriter.
close()
; writer.
close()
;}catch
(ioexception
| csvdatatypemismatchexception | csvrequiredfieldemptyexception e)
log.
info
("[csvutils][readmodeldatafromlocalpathwithheader]write to csv file successfully ,local path is "
+finalpath)
;}

mongodb匯入csv檔案

使用命令 mongoimport 引數 h 主機ip 埠 d 要匯入的db c 要匯入的collections f 指定字段 type 型別 file 匯入的檔案路徑 演示如下 root localhost bin mongoimport h 192.168.1.151 27017 d logs c...

Mysql 匯入csv檔案

mysql load data infile命令可以把csv平面檔案中的資料匯入到資料庫中。linux下 load data infile home test dump ip location.csv into table ip location character set utf8 fields ...

Solr匯入CSV檔案

首先得準備好乙份csv檔案，這份檔案可以是手動生成，也可以是從資料庫中匯出來的。參見postgresql匯入匯出資料 將postgres中的表匯出為csv檔案。上傳csv檔案示例，在csv檔案中,header不能加雙引號 postgres匯出時缺省會加上 比如下面的檔案匯入會出錯，id name 8...