Android 导入导出excel xls、xlsx
1.导入依赖
implementation group: 'org.apache.poi', name: 'poi-ooxml', version: '3.17' implementation group: 'org.apache.xmlbeans', name: 'xmlbeans', version: '3.1.0' implementation 'javax.xml.stream:stax-api:1.0' implementation 'com.fasterxml:aalto-xml:1.2.2'
2.导出 xls 需要异步调用
/**
* 导出Excel
*
* @param listData
* @return
*/
public boolean exportExcel(List listData, String fileDir, String fileName) {
if (TextUtils.isEmpty(fileDir) || TextUtils.isEmpty(fileName) || listData == null) {
return false;
}
try {
// 创建excel xlsx格式
Workbook wb = new XSSFWorkbook();
// 创建工作表
Sheet sheet = wb.createSheet();
String[] title = {"用户", "寄件人姓名", "寄件人手机号", "寄件人省/市/区", "寄件人详细地址", "收件人姓名", "收件人手机号", "收件人省/市/区", "收件人详细地址",
"实付款", "佣金", "创建时间"};
//创建行对象
Row row = sheet.createRow(0);
// 设置有效数据的行数和列数
int colNum = title.length; // {"用户", "寄件人姓名", "寄件人手机号", "寄件人省/市/区", "寄件人详细地址", "收件人姓名", "收件人手机号", "收件人省/市/区", "收件人详细地址","实付款", "佣金","创建时间"}
for (int i = 0; i < colNum; i++) {
sheet.setColumnWidth(i, 20 * 256); // 显示20个字符的宽度 列宽
Cell cell1 = row.createCell(i);
//第一行
cell1.setCellValue(title[i]);
}
// 导入数据
for (int rowNum = 0; rowNum < listData.size(); rowNum++) {
// 之所以rowNum + 1 是因为要设置第二行单元格
row = sheet.createRow(rowNum + 1);
// 设置单元格显示宽度
row.setHeightInPoints(28f);
// PhonebillExpressBean 这个是我的业务类，这个是根据业务来进行填写数据
PhonebillExpressBean bean = listData.get(rowNum);
for (int j = 0; j < title.length; j++) {
Cell cell = row.createCell(j);
//要和title[]一一对应
switch (j) {
case 0:
//用户
cell.setCellValue(bean.getUserData());
break;
case 1:
//寄件人姓名
cell.setCellValue(bean.getSenderName());
break;
case 2:
//寄件人手机号
cell.setCellValue(bean.getSenderPhoneNumber());
break;
case 3:
//寄件人省/市/区
cell.setCellValue(bean.getSenderState());
break;
case 4:
//寄件人详细地址
cell.setCellValue(bean.getSenderDetailed());
break;
case 5:
//收件人姓名
cell.setCellValue(bean.getAddresseeName());
break;
case 6:
//收件人手机号
cell.setCellValue(bean.getAddresseePhone());
break;
case 7:
//收件人省/市/区
cell.setCellValue(bean.getAddresseeState());
break;
case 8:
//收件人详细地址
cell.setCellValue(bean.getAddresseeDetailed());
break;
case 9:
//实付款
cell.setCellValue(bean.getPrice() + "元");
break;
case 10:
//佣金
cell.setCellValue(bean.getCommission() + "元");
break;
case 11:
//创建时间
cell.setCellValue(bean.getCreatedAt());
break;
}
}
}
String s = Environment.getExternalStorageDirectory() + "/" + fileDir;
String mSDCardFolderPath = getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS) + "/" + fileDir;
File dir = new File(s);
//判断文件是否存在
if (!dir.isFile()) {
//不存在则创建
dir.mkdir();
}
// File excel=new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS), convertTime(System.currentTimeMillis(),"MM月dd日HH时mm分")+".xlsx");
File excel = new File(dir, convertTime(System.currentTimeMillis(), fileName) + ".xlsx");
Log.e(" 导出路径", excel.getPath().toString());
FileOutputStream fos = new FileOutputStream(excel);
wb.write(fos);
fos.flush();
fos.close();
return true;
} catch (IOException e) {
Log.e("ExpressExcle", "exportExcel", e);
return false;
}
}
//时间戳转换字符串
public static String convertTime(long time, String patter) {
SimpleDateFormat sdf = new SimpleDateFormat(patter);
return sdf.format(new Date(time));
}
3.导入 需要异步调用
/**
* 导入excel
*
* @param fileName 本地文件路径
*/
private void readExcel(String fileName) {
try {
InputStream inputStream = new FileInputStream(fileName);
Workbook workbook;
if (fileName.endsWith(".xls")) {
workbook = new HSSFWorkbook(inputStream);
} else if (fileName.endsWith(".xlsx")) {
workbook = new XSSFWorkbook(inputStream);
} else {
Log.d("！！！导入失败！！！", " 文件格式错误 ");
return;
}
Sheet sheet = workbook.getSheetAt(0);//获取第一张表
int rowsCount = sheet.getPhysicalNumberOfRows();//获取行数
FormulaEvaluator formulaEvaluator = workbook.getCreationHelper().createFormulaEvaluator();
for (int r = 0; r < rowsCount; r++) {
String str = "";
Row row = sheet.getRow(r);//拿到行对象
int physicalNumberOfCells = row.getPhysicalNumberOfCells();//获取该行总列数
for (int i = 0; i < physicalNumberOfCells; i++) {
CellValue v0 = formulaEvaluator.evaluate(row.getCell(i));//获取单元格对象
str += v0.getStringValue();
}
Log.d("第" + (r + 1) + "行：", str);
}
workbook.close();
} catch (IOException e) {
e.printStackTrace();
}
}
4.注意：
需要读写权限
高版本动态申请权限
String[] PERMISSIONS_STORAGE = {Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE};
int permission = ActivityCompat.checkSelfPermission(this, "android.permission.WRITE_EXTERNAL_STORAGE");
if (permission != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this, PERMISSIONS_STORAGE, 1);
} else {
//logic
}
Android 10 有私密文件策略。解决：
res下新建xml文件夹，新建文件file_paths，文件内容如下
manifest application 注册fileprovider
sdk 29以上 允许根目录新建文件
application 加上
android:requestLegacyExternalStorage="true"