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struts.xml配置
<!-- 下载 -->
<action name="download" class="nam.menu.downloadAC">
<result name="input" type="stream">
<param name="contentType">application/vnd.ms-excel</param><!-- 指明文件的类型 -->
<param name="inputName">fis</param><!-- 指明文件下载的方法的名字 -->
<!--attachment属性是要选择打开时单独打开，而不是在浏览器中打开，默认是inline. 指明下载时文件的名字 -->
<param name="contentDisposition">attachment;filename="${exportFileName}.xls"</param>
<param name="bufferSize">4096</param>
</result>
</action>
java Action 层代码
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
public class DownloadAC extends BaseMenuDataAC{
private String ids;
private InputStream fis = null;
private String exportFileName = null;
public String getIds() {
return ids;
}
public void setIds(String ids) {
this.ids = ids;
}
public InputStream getFis() {
return fis;
}
public void setFis(InputStream fis) {
this.fis = fis;
}
public String getExportFileName() {
return exportFileName;
}
public void setExportFileName(String exportFileName) {
this.exportFileName = exportFileName;
}
public String execute() {
String name = "表名称";
try {
setExportFileName(new String(name.getBytes("GB2312"), "ISO8859-1"));
} catch (UnsupportedEncodingException e) {
// TODO: handle exception
e.printStackTrace();
}
fis = dowloadBS.exportcostinfolist(ids);
return INPUT;
}
}
BS层
public InputStream exportcostinfolist(String ids) {
// 创建excel导出对象
POIExcelObjectAdvance excel = new POIExcelObjectAdvance();
POIExcelSheet sheet1 = excel.createSheet("表");
// 初始化导出区域列表
List<POIExcelContent> areaList = new ArrayList<POIExcelContent>();
// 设置字体
HSSFFont font = excel.createDefaultFont();
font.setFontName("宋体");
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
font.setFontHeightInPoints((short) 10);
HSSFFont font1=excel.createDefaultFont();
font1.setFontName("黑体");
font1.setFontHeightInPoints((short) 13);
int[] cols = { 10, 10, 20, 30};
sheet1.setColumnWidth(cols);
// 初始化导出区域1的内容列表
List<String[]> title1List = new ArrayList<String[]>();
// 在导出区域1内容列表增加导出内容
String[] titles = { "序号", "mingchengf", "nianling","jiankang};
title1List.add(titles);
POIExcelContent title1 = new POIExcelContent(0, 0, title1List, font1);
areaList.add(title1);
List<Date> data = downloadDataDAO.queryExportMenuDataList(ids);
List<String[]> title2List = new ArrayList<String[]>();
for (int i = 0; i < data.size(); i++) {
String[] content = new String[titles.length];
content[0] = String.valueOf(i + 1);
content[1] = data.get(i).getName();
content[2] = data.get(i).getAge();
content[3] = data.get(i).getJakang();
title2List.add(content);
}
POIExcelContent title2 = new POIExcelContent(0, 1, title2List, font);
areaList.add(title2);
sheet1.setContentList(areaList);
return excel.toInputStream();
}
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原文地址：http://www.cnblogs.com/songwy/p/4569795.html
