Java导入导出数据到给定多sheet的excel文件

JAVA程序实现导入导出数据到给定的EXCEL文件模板中

首先创建一个maven项目，在pom.xml文件中引入需要的包(这里3.14版本的poi会有一些问题，在导入07版本的excel时xmlbeans使用2.6.0及以上版本)：

[code]<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.12</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.12</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml-schemas</artifactId>
<version>3.12</version>
</dependency>
<dependency>
<groupId>org.apache.xmlbeans</groupId>
<artifactId>xmlbeans</artifactId>
<version>2.6.0</version>
</dependency>

准备好需要导入的excel模板文件：D://a.xlxs 。

[code]关键代码：
//把查询出的数据导出到给定的excel模板中
public byte[] exportExcel(int startIndex, String[] keys, Map<String, Object> data){
//获取到模板文件
File excel = PropertiesUtil.getFile("D://a.xlxs");
FileInputStream fis = new FileInputStream(excel);
//创建excel
XSSFWorkbook book = new XSSFWorkbook(fis);
//keys是对应的导出数据字段，map中的key列表
for(int i=0; i<keys.length; k++){
String[] key = keys[i];
XSSFSheet sheet = book.getSheetAt(i);
List<Map<String, Object>> list = data.get("list"+i);
for(int j=0; j<list.size(); k++){
Row row = sheet.createRow(j+startIndex);
Map<String, Object> map = list.get(j);
for(int k=0; k<key.length; k++){
String s = map.get(key[k])+"";
row.createCell(k).setCellValue(s);
}
}
}
}
ByteArrayOutputStream os = new ByteArrayOutputStream();
try {
wbs.write(os);
} catch (IOException e) {
e.printStackTrace();
}
return os.toByteArray();
}

[code]文件导入
public Map<String, Object> importSeries(InputStream is, String[] keys, int startIndex) throws Exception{
Map<String, Object> map = new HashMap<String, Object>();
Workbook book = null;
try {
book = new XSSFWorkbook(is);
} catch (IOException e) {
book = new HSSFWorkbook(is);
}
for(int i=0; i<keys.length; i++){
List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
String[] key = keys[i];
Sheet sheet = book.getSheetAt(i);
int totalRows = sheet.getLastRowNum();
for(int j = 0; j<totalRows; j++){
Row row = sheet.getRow(startIndex+j);
if(row == null){
continue;
}
int totalCells = row.getLastCellNum();
Map<String, Object> map1 = new HashMap<String, Object>();
for(int k=0; k<totalCells; k++){
Cell cell = row.getCell(k);
if(cell!=null){
map1.put(key[k], row.getCell(k).getStringCellValue());
}
}
list.add(map1);
}
map.put("list"+i, list);
}
return map;
}

[code]导出到文件
private static void exportExcel(List<ZSMM_SRM_MAT_SYNC> list) throws IOException{
List<ZSMM_SRM_MAT_SYNC> list0 = list.subList(0, 20000);
List<ZSMM_SRM_MAT_SYNC> list1 = list.subList(20000, 40000);
List<ZSMM_SRM_MAT_SYNC> list2 = list.subList(40000, list.size());
List<Object> listx = new ArrayList<Object>();
listx.add(list0);
listx.add(list1);
listx.add(list2);
for(int j=0; j<3; j++){
System.out.println(j);
@SuppressWarnings("unchecked")
List<ZSMM_SRM_MAT_SYNC> lists= (List<ZSMM_SRM_MAT_SYNC>) listx.get(j);
XSSFWorkbook wb = new XSSFWorkbook();
XSSFSheet sheet = wb.createSheet("物料主数据"+j);
sheet.setDefaultColumnWidth(20);
//XSSFCellStyle style = wb.createCellStyle();
XSSFRow row = sheet.createRow(0);
// style.setAlignment(XSSFCellStyle.ALIGN_CENTER);
XSSFCell cell = row.createCell(0);
cell.setCellValue("物料号");
cell = row.createCell(1);
cell.setCellValue("物料描述");
cell = row.createCell(2);
cell.setCellValue("创建日期");
cell = row.createCell(3);
cell.setCellValue("删除标识符");
cell = row.createCell(4);
cell.setCellValue("跨工厂物料状态 ");
cell = row.createCell(5);
cell.setCellValue("物料类型");
cell = row.createCell(6);
cell.setCellValue("物料组");
cell = row.createCell(7);
cell.setCellValue("外部物料组");
cell = row.createCell(8);
cell.setCellValue("基本计量单位");
cell = row.createCell(9);
cell.setCellValue("采购订单的计量单位 ");
cell = row.createCell(10);
cell.setCellValue("实验室/设计室 ");
cell = row.createCell(11);
cell.setCellValue("毛重 ");
cell = row.createCell(12);
cell.setCellValue("净重 ");
cell = row.createCell(13);
cell.setCellValue("重量单位 ");
cell = row.createCell(14);
cell.setCellValue("业务量 ");
cell = row.createCell(15);
cell.setCellValue("体积单位 ");
cell = row.createCell(16);
cell.setCellValue("长 ");
cell = row.createCell(17);
cell.setCellValue("宽 ");
cell = row.createCell(18);
cell.setCellValue("高");
cell = row.createCell(19);
cell.setCellValue("物料描述-英 ");
for (int i = 0; i < lists.size(); i++) {
row = sheet.createRow(i + 1);
row.createCell(0).setCellValue(lists.get(i).getMATNR());
row.createCell(1).setCellValue(lists.get(i).getMAKTX());
row.createCell(2).setCellValue(lists.get(i).getERSDA()+"");
row.createCell(3).setCellValue(lists.get(i).getLVORM());
row.createCell(4).setCellValue(lists.get(i).getMSTAE());
row.createCell(5).setCellValue(lists.get(i).getMTART());
row.createCell(6).setCellValue(lists.get(i).getMATKL());
row.createCell(7).setCellValue(lists.get(i).getEXTWG());
row.createCell(8).setCellValue(lists.get(i).getMEINS());
row.createCell(9).setCellValue(lists.get(i).getBSTME());
row.createCell(10).setCellValue(lists.get(i).getLABOR());
row.createCell(11).setCellValue(lists.get(i).getBRGEW()+"");
row.createCell(12).setCellValue(lists.get(i).getNTGEW()+"");
row.createCell(13).setCellValue(lists.get(i).getGEWEI());
row.createCell(14).setCellValue(lists.get(i).getVOLUM()+"");
row.createCell(15).setCellValue(lists.get(i).getVOLEH());
row.createCell(16).setCellValue(lists.get(i).getLENGTH());
row.createCell(17).setCellValue(lists.get(i).getWIDTH());
row.createCell(18).setCellValue(lists.get(i).getHEIGHT());
row.createCell(19).setCellValue(lists.get(i).getMAKTX_E());
}
FileOutputStream out = new FileOutputStream("E://物料主数据"+j+".xlsx");
wb.write(out);
out.close();
System.out.println("ok"+j);
}