Struts的文件下载功能

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Action层:

public String myDownloadFile() {
		HttpServletResponse response = ServletActionContext.getResponse();
		String myFileName = getFilename();	//设置文件名 一般带有扩展名。是下载后文件的名称。
		try {
			byte[] buffer = XXXService.readFile(attId); // byte[]  通过id获取文件的byte数组
			// 清空response
			response.reset();
			// 设置response的Header
			response.addHeader("Content-Disposition",
					"attachment;filename=" + new String(myFileName.getBytes("gb2312"), "ISO8859-1"));
			OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
			response.setContentType("application/octet-stream");
			toClient.write(buffer);
			toClient.flush();
			toClient.close();
		} catch (IOException ex) {
			ex.printStackTrace();
		}
		return null;
	}

Struts配置文件:

<action name="myDownloadFile" class="xyz.jangle.base.action.AttachmentAction" method="myDownloadFile">
	    	<result name="success"></result>
</action>

前端html:

<a href="/myDownloadFile.action?attId=fileId">文件名称.doc</a>

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转载自blog.csdn.net/Bof_jangle/article/details/83212441