一、Excel的导入
导入可采用两种方式，一种是JXL，另一种是POI，但前者不能读取高版本的Excel(07以上)，后者更具兼容性。由于对两种方式都进行了尝试，就都贴出来分享(若有错误，请给予指正)
方式一、JXL导入 所需jar包 JXL.jar
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publicstaticList<PutStorageInfo> readExcelByJXL(String filePath){
List<PutStorageInfo> infoList =newArrayList<PutStorageInfo>();
Map<String,List<String>> map =newHashMap<String,List<String>>();
infoList.clear();
try
{
InputStream is =newFileInputStream(filePath);
Workbook workbook =Workbook.getWorkbook(is);
//获取第1张表
Sheet sheet = workbook.getSheet(
0
);
//获取总的列数
int
columns = sheet.getColumns();
//获取总的行数
int
rows = sheet.getRows();
//先列后行(j,i)
for
(
int
i =
1
; i < rows; i++){
List<String> contentList =newArrayList<String>();
contentList.clear();
for
(
int
j =
1
; j < columns; j++){
contentList.add(sheet.getCell(j,i).getContents());
}
map.put(
"StorageInfo"
+i, contentList);
}
//遍历map集合，封装成bean
for
(Map.Entry<String,List<String>> entry : map.entrySet()){
List<String> list = entry.getValue();
PutStorageInfo storageInfo =newPutStorageInfo();
storageInfo.setProductcode(list.get(
0
));
storageInfo.setProductsort(list.get(
1
));
storageInfo.setProductbrand(list.get(
2
));
storageInfo.setProductname(list.get(
3
));
storageInfo.setProductquantity(list.get(
4
));
storageInfo.setProductcontent(list.get(
5
));
storageInfo.setProductnetweight(list.get(
6
));
storageInfo.setProductcountry(list.get(
7
));
storageInfo.setProductpdate(list.get(
8
));
storageInfo.setProductprice(list.get(
9
));
storageInfo.setProductmark(list.get(
10
));
infoList.add(storageInfo);
}
is.close();
}
catch
(Exception e){
e.printStackTrace();
}
return
infoList;
}
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方式二、POI导入
所需jar包
poi-3.6-20091214.jar
poi-ooxml-3.6-20091214.jar
poi-ooxml-schemas-3.6-20091214.jar
xmlbeans-2.3.0.jar
dom4j-1.6.1.jar
jdom-2.0.6.jar
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publicstaticList<PutStorageInfo> readExcelByPOI(String filePath){
List<PutStorageInfo> infoList =newArrayList<PutStorageInfo>();
Map<String,List<String>> map =newHashMap<String,List<String>>();
infoList.clear();
try
{
InputStream is =newFileInputStream(filePath);
int
index = filePath.lastIndexOf(
"."
);
String postfix = filePath.substring(index+
1
);
Workbook workbook =
null
;
if
(
"xls"
.equals(postfix)){
workbook =newHSSFWorkbook(is);
}elseif(
"xlsx"
.equals(postfix)){
workbook =newXSSFWorkbook(is);
}
//获取第1张表
Sheet sheet = workbook.getSheetAt(
0
);
//总的行数
int
rows = sheet.getLastRowNum();
//总的列数--->最后一列为null则有问题，读取不完整，将表头的数目作为总的列数，没有的则补为null
int
columns = sheet.getRow(
0
).getLastCellNum();
//先列后行
for
(
int
i =
1
; i <= rows; i++){
Row row = sheet.getRow(i);
if
(
null
!= row && row.getFirstCellNum()==-
1
){
//这一行是空行，不读取
continue
;
}
//这一行的总列数
// columns = row.getLastCellNum();
List<String> contentList =newArrayList<String>();
contentList.clear();
for
(
int
j =
1
; j < columns; j++){
if
(row.getCell(j)!=
null
){
row.getCell(j).setCellType(Cell.CELL_TYPE_STRING);
contentList.add(row.getCell(j).getStringCellValue());
}
else
{
contentList.add(
""
);
}
}
map.put(
"StorageInfo"
+i, contentList);
}
//遍历map集合，封装成bean
for
(Map.Entry<String,List<String>> entry : map.entrySet()){
List<String> list = entry.getValue();
PutStorageInfo storageInfo =newPutStorageInfo();
storageInfo.setProductcode(list.get(
0
));
storageInfo.setProductsort(list.get(
1
));
storageInfo.setProductbrand(list.get(
2
));
storageInfo.setProductname(list.get(
3
));
storageInfo.setProductquantity(list.get(
4
));
storageInfo.setProductcontent(list.get(
5
));
storageInfo.setProductnetweight(list.get(
6
));
storageInfo.setProductcountry(list.get(
7
));
storageInfo.setProductpdate(list.get(
8
));
storageInfo.setProductprice(list.get(
9
));
storageInfo.setProductmark(list.get(
10
));
infoList.add(storageInfo);
}
is.close();
}
catch
(Exception e){
e.printStackTrace();
}
return
infoList;
}
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二、Excel导出
采用JXL实现
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publicstaticvoid creatExcel(List<PutStorageInfo> storageInfoList,String fileName){
try
{
OutputStream os =newFileOutputStream(fileName);
//创建可写的工作薄
WritableWorkbook workbook =Workbook.createWorkbook(os);
//创建第一张表
WritableSheet sheet = workbook.createSheet(
"Sheet1"
,
0
);
//设置根据内容自动宽度
CellView cellView =newCellView();
cellView.setAutosize(
true
);
//在下边for循环中为每一列设置
//设置列宽度,此种方式参数的意思，i-->对应的行或列 j-->要设置的宽度
// sheet.setColumnView(0, 100);
// sheet.setRowView(0, 300);
//设置字体加粗且背景颜色为黄色
WritableFont boldFont =newWritableFont(WritableFont.ARIAL,
10
,WritableFont.BOLD);
//黑体
WritableCellFormat cellrFormate =newWritableCellFormat(boldFont);
cellrFormate.setBackground(Colour.YELLOW);
//先添加表头
List<String> titleList = getTitleList();
//循环创建单元格,先列后行
for
(
int
i =
0
; i < titleList.size(); i++){
//sheet.setColumnView(i, cellView);
sheet.setColumnView(i,
20
);
Label label =newLabel(i,
0
, titleList.get(i), cellrFormate);
sheet.addCell(label);
}
LogUtil.logOut(JXLWriteExcel.
class
,storageInfoList.size()+
""
);
String[][] content = convertToArr(storageInfoList);
//设置content的自适应当前列的宽度，文本太对会自动换行 new Label(j, i+1, content[i][j-1],contentFormat);
WritableCellFormat contentFormat =newWritableCellFormat();
contentFormat.setWrap(
true
);
//然后添加入库信息条目
for
(
int
i =
0
; i < storageInfoList.size(); i++){
Label labelID =newLabel(
0
,i+
1
,(i+
1
)+
""
);
sheet.addCell(labelID);
for
(
int
j =
1
; j < titleList.size(); j++){
Label label =newLabel(j, i+
1
, content[i][j-
1
]);
sheet.addCell(label);
}
}
//把创建的内容写入到输出流中，并关闭输出流
workbook.write();
workbook.close();
os.close();
//将存储了入库bean的list清空
storageInfoList.clear();
}
catch
(Exception e){
e.printStackTrace();
}
}
privatestaticString[][] convertToArr(List<PutStorageInfo> storageInfoList){
String[][] content =newString[storageInfoList.size()][
11
];
for
(
int
i =
0
; i < storageInfoList.size(); i++){
PutStorageInfo info = storageInfoList.get(i);
//每个bean中总项有11项
content[i][
0
]= info.getProductcode();
content[i][
1
]= info.getProductsort();
content[i][
2
]= info.getProductbrand();
content[i][
3
]= info.getProductname();
content[i][
4
]= info.getProductquantity();
content[i][
5
]= info.getProductcontent();
content[i][
6
]= info.getProductnetweight();
content[i][
7
]= info.getProductcountry();
content[i][
8
]= info.getProductpdate();
content[i][
9
]= info.getProductprice();
content[i][
10
]= info.getProductmark();
}
return
content;
}
privatestaticList<String> getTitleList(){
List<String> list =newArrayList<String>();
list.add(
"Item No."
);
list.add(
"Product code"
);
list.add(
"Sort"
);
list.add(
"Brand"
);
list.add(
"Product Name"
);
list.add(
"Quantity(Pieces)"
);
list.add(
"Content"
);
list.add(
"Net Weight"
);
list.add(
"Country"
);
list.add(
"Best before date"
);
list.add(
"Price(EURO)"
);
list.add(
"Remarks"
);
return
list;
}
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转自：http://www.jb51.net/article/117205.htm