import
java.io.FileInputStream;
import
java.io.IOException;
import
java.io.InputStream;
import
java.util.ArrayList;
import
java.util.List;
import
org.apache.poi.hssf.usermodel.HSSFCell;
import
org.apache.poi.hssf.usermodel.HSSFRow;
import
org.apache.poi.hssf.usermodel.HSSFSheet;
import
org.apache.poi.hssf.usermodel.HSSFWorkbook;
/**
*
* @author Hongten</br>
*
*
*/
public
class
XlsMain {
public
static
void
main(String[] args)
throws
IOException {
XlsMain xlsMain =
new
XlsMain();
XlsDto xls =
null
;
List<XlsDto> list = xlsMain.readXls();
try
{
XlsDto2Excel.xlsDto2Excel(list);
}
catch
(Exception e) {
e.printStackTrace();
}
for
(
int
i =
0
; i < list.size(); i++) {
xls = (XlsDto) list.get(i);
System.out.println(xls.getXh() +
" "
+ xls.getXm() +
" "
+ xls.getYxsmc() +
" "
+ xls.getKcm() +
" "
+ xls.getCj());
}
}
/**
* 读取xls文件内容
*
* @return List<XlsDto>对象
* @throws IOException
* 输入/输出(i/o)异常
*/
private
List<XlsDto> readXls()
throws
IOException {
InputStream is =
new
FileInputStream(
"pldrxkxxmb.xls"
);
HSSFWorkbook hssfWorkbook =
new
HSSFWorkbook(is);
XlsDto xlsDto =
null
;
List<XlsDto> list =
new
ArrayList<XlsDto>();
// 循环工作表Sheet
for
(
int
numSheet =
0
; numSheet < hssfWorkbook.getNumberOfSheets(); numSheet++) {
HSSFSheet hssfSheet = hssfWorkbook.getSheetAt(numSheet);
if
(hssfSheet ==
null
) {
continue
;
}
// 循环行Row
for
(
int
rowNum =
1
; rowNum <= hssfSheet.getLastRowNum(); rowNum++) {
HSSFRow hssfRow = hssfSheet.getRow(rowNum);
if
(hssfRow ==
null
) {
continue
;
}
xlsDto =
new
XlsDto();
// 循环列Cell
// 0学号 1姓名 2学院 3课程名 4 成绩
// for (int cellNum = 0; cellNum <=4; cellNum++) {
HSSFCell xh = hssfRow.getCell(
0
);
if
(xh ==
null
) {
continue
;
}
xlsDto.setXh(getValue(xh));
HSSFCell xm = hssfRow.getCell(
1
);
if
(xm ==
null
) {
continue
;
}
xlsDto.setXm(getValue(xm));
HSSFCell yxsmc = hssfRow.getCell(
2
);
if
(yxsmc ==
null
) {
continue
;
}
xlsDto.setYxsmc(getValue(yxsmc));
HSSFCell kcm = hssfRow.getCell(
3
);
if
(kcm ==
null
) {
continue
;
}
xlsDto.setKcm(getValue(kcm));
HSSFCell cj = hssfRow.getCell(
4
);
if
(cj ==
null
) {
continue
;
}
xlsDto.setCj(Float.parseFloat(getValue(cj)));
list.add(xlsDto);
}
}
return
list;
}
/**
* 得到Excel表中的值
*
* @param hssfCell
* Excel中的每一个格子
* @return Excel中每一个格子中的值
*/
@SuppressWarnings
(
"static-access"
)
private
String getValue(HSSFCell hssfCell) {
if
(hssfCell.getCellType() == hssfCell.CELL_TYPE_BOOLEAN) {
// 返回布尔类型的值
return
String.valueOf(hssfCell.getBooleanCellValue());
}
else
if
(hssfCell.getCellType() == hssfCell.CELL_TYPE_NUMERIC) {
// 返回数值类型的值
return
String.valueOf(hssfCell.getNumericCellValue());
}
else
{
// 返回字符串类型的值
return
String.valueOf(hssfCell.getStringCellValue());
}
}
}
|
XlsDto2Excel.java类
//该类主要负责向Excel(2003版)中插入数据
import
java.io.FileOutputStream;
import
java.io.OutputStream;
import
java.util.List;
import
org.apache.poi.hssf.usermodel.HSSFCell;
import
org.apache.poi.hssf.usermodel.HSSFRichTextString;
import
org.apache.poi.hssf.usermodel.HSSFRow;
import
org.apache.poi.hssf.usermodel.HSSFSheet;
import
org.apache.poi.hssf.usermodel.HSSFWorkbook;
public
class
XlsDto2Excel {
/**
*
* @param xls
* XlsDto实体类的一个对象
* @throws Exception
* 在导入Excel的过程中抛出异常
*/
public
static
void
xlsDto2Excel(List<XlsDto> xls)
throws
Exception {
// 获取总列数
int
CountColumnNum = xls.size();
// 创建Excel文档
HSSFWorkbook hwb =
new
HSSFWorkbook();
XlsDto xlsDto =
null
;
// sheet 对应一个工作页
HSSFSheet sheet = hwb.createSheet(
"pldrxkxxmb"
);
HSSFRow firstrow = sheet.createRow(
0
);
// 下标为0的行开始
HSSFCell[] firstcell =
new
HSSFCell[CountColumnNum];
String[] names =
new
String[CountColumnNum];
names[
0
] =
"学号"
;
names[
1
] =
"姓名"
;
names[
2
] =
"学院"
;
names[
3
] =
"课程名"
;
names[
4
] =
"成绩"
;
for
(
int
j =
0
; j < CountColumnNum; j++) {
firstcell[j] = firstrow.createCell(j);
firstcell[j].setCellValue(
new
HSSFRichTextString(names[j]));
}
for
(
int
i =
0
; i < xls.size(); i++) {
// 创建一行
HSSFRow row = sheet.createRow(i +
1
);
// 得到要插入的每一条记录
xlsDto = xls.get(i);
for
(
int
colu =
0
; colu <=
4
; colu++) {
// 在一行内循环
HSSFCell xh = row.createCell(
0
);
xh.setCellValue(xlsDto.getXh());
HSSFCell xm = row.createCell(
1
);
xm.setCellValue(xlsDto.getXm());
HSSFCell yxsmc = row.createCell(
2
);
yxsmc.setCellValue(xlsDto.getYxsmc());
HSSFCell kcm = row.createCell(
3
);
kcm.setCellValue(xlsDto.getKcm());
HSSFCell cj = row.createCell(
4
);
cj.setCellValue(xlsDto.getCj());
(xlsDto.getMessage());
}
}
// 创建文件输出流，准备输出电子表格
OutputStream out =
new
FileOutputStream(
"POI2Excel/pldrxkxxmb.xls"
);
hwb.write(out);
out.close();
System.out.println(
"数据库导出成功"
);
}
}
|
XlsDto .java类
//该类是一个实体类
public
class
XlsDto {
/**
* 选课号
*/
private
Integer xkh;
/**
* 学号
*/
private
String xh;
/**
* 姓名
*/
private
String xm;
/**
* 学院
*/
private
String yxsmc;
/**
* 课程号
*/
private
Integer kch;
/**
* 课程名
*/
private
String kcm;
/**
* 成绩
*/
private
float
cj;
public
Integer getXkh() {
return
xkh;
}
public
void
setXkh(Integer xkh) {
this
.xkh = xkh;
}
public
String getXh() {
return
xh;
}
public
void
setXh(String xh) {
this
.xh = xh;
}
public
String getXm() {
return
xm;
}
public
void
setXm(String xm) {
this
.xm = xm;
}
public
String getYxsmc() {
return
yxsmc;
}
public
void
setYxsmc(String yxsmc) {
this
.yxsmc = yxsmc;
}
public
Integer getKch() {
return
kch;
}
public
void
setKch(Integer kch) {
this
.kch = kch;
}
public
String getKcm() {
return
kcm;
}
public
void
setKcm(String kcm) {
this
.kcm = kcm;
}
public
float
getCj() {
return
cj;
}
public
void
setCj(
float
cj) {
this
.cj = cj;
}
}
|