java导出excel生成多个sheet
try {
OutputStream out = new FileOutputStream(“E:\test.xls”);//导出本地
//OutputStream out = response.getOutputStream();//输出客户端
List<List> data1 = new ArrayList<List>();
List<List> data2 = new ArrayList<List>();
List<List> data3 = new ArrayList<List>();
for (int i = 1; i < 5; i++) {
List rowData = new ArrayList();
rowData.add(String.valueOf(i));
rowData.add(“上海东霖柏鸿”);
data1.add(rowData);
}
for (int i = 1; i < 5; i++) {
List rowData = new ArrayList();
rowData.add(String.valueOf(i));
rowData.add(“深圳东霖柏鸿”);
data2.add(rowData);
}
for (int i = 1; i < 5; i++) {
List rowData = new ArrayList();
rowData.add(String.valueOf(i));
rowData.add(“广州东霖柏鸿”);
data3.add(rowData);
}
String[] headers = { “ID”, “用户名” };
ExportExcelUtils eeu = new ExportExcelUtils();
HSSFWorkbook workbook = new HSSFWorkbook();
eeu.exportExcel(workbook, 0, “上海”, headers, data1, out);
eeu.exportExcel(workbook, 1, “深圳”, headers, data2, out);
eeu.exportExcel(workbook, 2, “广州”, headers, data3, out);
//原理就是将所有的数据一起写入,然后再关闭输入流。
workbook.write(out);
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
public class ExportExcelUtils {
/**
* @Title: exportExcel
* @Description: 导出Excel的方法
* @author: liuct @ 2019-01-29
* @param workbook
* @param sheetNum (sheet的位置,0表示第一个表格中的第一个sheet)
* @param sheetTitle (sheet的名称)
* @param headers (表格的标题)
* @param result (表格的数据)
* @param out (输出流)
* @throws Exception
*/
public void exportExcel(HSSFWorkbook workbook, int sheetNum,
String sheetTitle, String[] headers, List<List<String>> result,
OutputStream out) throws Exception {
// 生成一个表格
HSSFSheet sheet = workbook.createSheet();
workbook.setSheetName(sheetNum, sheetTitle);
// 设置表格默认列宽度为20个字节
sheet.setDefaultColumnWidth((short) 20);
// 生成一个样式
HSSFCellStyle style = workbook.createCellStyle();
// 设置这些样式
style.setFillForegroundColor(HSSFColor.PALE_BLUE.index);
style.setFillBackgroundColor(HSSFColor.WHITE.index);
style.setFillForegroundColor(HSSFColor.LIGHT_ORANGE.index);
// 生成一个字体
HSSFFont font = workbook.createFont();
font.setColor(HSSFColor.BLACK.index);
font.setFontHeightInPoints((short) 12);
// 把字体应用到当前的样式
style.setFont(font);
// 指定当单元格内容显示不下时自动换行
style.setWrapText(true);
// 产生表格标题行
HSSFRow row = sheet.createRow(0);
for (int i = 0; i < headers.length; i++) {
HSSFCell cell = row.createCell((short) i);
cell.setCellStyle(style);
HSSFRichTextString text = new HSSFRichTextString(headers[i]);
cell.setCellValue(text.toString());
}
// 遍历集合数据,产生数据行
if (result != null) {
int index = 1;
for (List<String> m : result) {
row = sheet.createRow(index);
int cellIndex = 0;
for (String str : m) {
HSSFCell cell = row.createCell((short) cellIndex);
cell.setCellValue(str.toString());
cellIndex++;
}
index++;
}
}
}
}
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