jxls的使用方法：

1）声明一个XLSTransformer对象，生成方式就是使用new操作符
                XLSTransformer transformer = new XLSTransformer();

2）得到Template的FIle：
                 String xlsTemplateFileName = this.getClass().getClassLoader().getResource("template.xls");

3）利用XLSTransformer的类的方法生成Excel文件
                  String xlsFileName = "D:"+File.separator+"resule.xls";
                  Map map= new HashMap();
                  map .put("news1","news1 ");
                  map .put("news2","news2");
                  transformer.transformXLS(xlsTemplateFileName , map, xlsFileName);

XLSTransformer类的transformXLS方法的定义如下：
                  public void transformXLS(String srcFilePath, Map  map , String destFilePath) throws ParsePropertyException,

IOException其中：srcFilePath：是Template文件的全文件名（包含路径）
                  map ：需要传入Excel里面的一个Map，jxls根据Template里面的定义和Map里面的对象对Template进行解析，

将Map里面的对象值填入到Excel文件中
                  destFilePath：需要生成的Excel文件的全文件名（包含路径）

Struts.xml配置

<action name="reportTest" method="reportTest"   class="org.bkgd.tpmis.report.web.action.T">   <result type="stream">    <param name="contentType">application/octet-stream</param>    <param name="inputName">inputStream</param>    <param name="contentDisposition">attachment;filename="reportTest.xls"</param>    <param name="bufferSize">4096</param>   </result>  </action>

java代码

public class T { private InputStream inputStream; public String reportTest() {  try {   List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();   Map<String, Object> m1 = new HashMap<String,Object>();   m1.put("PRONAME", "项目1");   m1.put("PLANTYPE", "计划1");   m1.put("PROTYPE", "类别1");   Map<String, Object> m2 = new HashMap<String,Object>();   m2.put("PRONAME", "项目2");   m2.put("PLANTYPE", "计划2");   m2.put("PROTYPE", "类别2");      list.add(m1);   list.add(m2);     //------------------------开始报表   Map<String, Object> para = new HashMap<String, Object>();   para.put("result", list);   XLSTransformer transformer = new XLSTransformer();   Workbook wb;   try {    //模板路径    String classPath =  this.getClass().getClassLoader().getResource("report/resource/reportTest.xls").getPath();    //真实导出路径    String classPath2 =  this.getClass().getClassLoader().getResource("report/temp/reportTest.xls").getPath();    transformer.transformXLS(classPath, para,classPath2);  //在classPath2下生成excel文件    inputStream = new FileInputStream(new File(classPath2));    wb = transformer.transformXLS(new FileInputStream(classPath),para);   //获得Workbook对象        wb.write(new FileOutputStream(classPath2));  //导出Excel   } catch (Exception e) {    throw new ReportException(e);   }  } catch (Exception e) {   e.printStackTrace();  }  return "success"; } public InputStream getInputStream() {  return inputStream; } public void setInputStream(InputStream inputStream) {  this.inputStream = inputStream; }}

reportTest.xls文件格式