Java poi 导出Excel并下载到客户端，具体内容如下
Maven配置，包含了其他文件格式的依赖，就全贴出来了
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<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-excelant</artifactId>
<version>3.12</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-scratchpad</artifactId>
<version>3.12</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.8</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml-schemas</artifactId>
<version>3.8</version>
</dependency>
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Service层
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@Override
public void export(Long sblsh, String excelName, OutputStream out) {
try {
// 第一步，创建一个webbook，对应一个Excel文件
HSSFWorkbook wb = new HSSFWorkbook();
//生成一个表格
HSSFSheet sheet = wb.createSheet(excelName);
// 第三步，在sheet中添加表头第0行
HSSFRow row = sheet.createRow(0);
// 第四步，创建单元格，并设置值表头 设置表头居中
HSSFCellStyle style = wb.createCellStyle();
style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 创建一个居中格式
HSSFCell cell = row.createCell(0);
cell.setCellStyle(style);
Byte kjzz = qyjbxxMapper.getKjzz(sblsh);
List<A> record = this.selectBySblsh(sblsh);
this.insertData(wb, sheet, row, record, out);
}
} catch (Exception e) {
logger.info(e.getMessage());
}
}
/**
* 导入数据到表格中
* @param wb execl文件
* @param sheet 表格
* @param row 表格行
* @param record 要导出的数据
* @param out 输出流
*/
private void insertData(HSSFWorkbook wb,HSSFSheet sheet,HSSFRow row,List<A> record,
OutputStream out){
try {
row = sheet.createRow(1);
for(int i=0;i<title.length;i++){
row.createCell(i).setCellValue(title[i]);
}
for(int i=0;i<record.size();i++){
row = sheet.createRow(i+2);
A data = record.get(i);
row.createCell(0).setCellValue(data.getHc());
row.createCell(1).setCellValue(data.getXm());
BigDecimal je = data.getJe();
if(je!=null){
row.createCell(2).setCellValue(je.doubleValue());
}
}
//合并单元格，前面2位代表开头结尾行，后面2位代表开头结尾列
CellRangeAddress region = new CellRangeAddress(0,0,0,title.length-1);
sheet.addMergedRegion(region);
wb.write(out);
out.flush();
out.close();
wb.close();
} catch (Exception e) {
logger.info(e.getMessage());
}
}
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Controller
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@RequestMapping("/export")
public void export(Long sblsh, HttpServletRequest request, HttpServletResponse response){
response.setContentType("octets/stream");
String excelName = "文件名";
try {
response.addHeader("Content-Disposition", "attachment;filename="+new String(excelName.getBytes("gb2312"), "ISO8859-1" )+".xls");
OutputStream out = response.getOutputStream();
aService.export(sblsh,excelName ,out);
} catch (Exception e) {
e.printStackTrace();
}
}
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以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：http://www.cnblogs.com/zwdx/p/7519342.html