springMVCs下载

jsp:

 <a href="to/downloadFile.do?fileName=宜春院.rar">下载带中文字符的文件</a>

java

@Controller
@RequestMapping("to")
public class toAction{
/**
	 * 下载
	 * @return
	 */
	@RequestMapping("downloadFile.do")
	public void DownloadFile(HttpServletRequest httpServletRequest,HttpServletResponse httpServletResponse){
		try {
			
			
			String fileName=httpServletRequest.getParameter("fileName");//获取文件名
			fileName = new String(fileName.getBytes("ISO8859-1"), "utf-8");
			
			//将正确能识别的中文名转化成ISO8859-1编码才可以正确下载
			String fileNameEncode = new String(fileName.getBytes(),"ISO8859-1");
			httpServletResponse.setContentType("application/x-msdownload");
			//物理盘位置
			FileInputStream fileInputStream = new FileInputStream(
					new File(httpServletRequest.getSession().getServletContext().getRealPath("")+"\\"+fileName));
			
			httpServletResponse.setHeader("Content-disposition","attachment;filename="+fileNameEncode);
			
			OutputStream outputStream = httpServletResponse.getOutputStream();
			//fileInputStream---->>>outputStream  到这里去
			IOUtils.copy(fileInputStream, outputStream);
			
			
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		
	}
	
	
	
	
	
	
	
}