struts2 annotations下载

使用jexcel生成excel，使用annotations配置下载的参数。

@Results( { @Result(name = BaseDownLoadAction.DOWNLOAD, type = "stream", params = { "contentType", "application/vnd.ms-excel",

"inputName", "inputStream", "contentDisposition", "attachment;filename=\"${downloadFileName}\"", "bufferSize",

"4096" }) })

public class DownLoad2Action extends ActionSupport{

public static final String DOWNLOAD = "download";

private String fileName;// 初始的通过param指定的文件名属性

public String getFile() throws Exception{

setFileName("add的.xls");

return BaseDownLoadAction.DOWNLOAD;

}

public InputStream getInputStream() throws Exception {

WritableWorkbook workbook = Workbook.createWorkbook(new File("d:\\a.xls"));

WritableSheet sheet = workbook.createSheet("测试", 0);

Label label = new Label(0, 0, "hello world 从");

sheet.addCell(label);

workbook.write();

workbook.close();

return new FileInputStream(new File("d:\\a.xls"));

}

/** 提供转换编码后的供下载用的文件名 */

public String getDownloadFileName() {

String downFileName = fileName;

try {

downFileName = new String(downFileName.getBytes(), "ISO8859-1");

} catch (UnsupportedEncodingException e) {

e.printStackTrace();

}

return downFileName;

}

public void setFileName(String fileName) {

this.fileName = fileName;

}

}

访问的URL：down-load2!getFile.action

params 中使用键值对进行设置：key1，value1，key2，value2.....；对应response相应头