SpringMVC 下载文件，图片等

应用包为:

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.io.FileUtils;

import org.springframework.http.HttpHeaders;

import org.springframework.http.HttpStatus;

import org.springframework.http.MediaType;

import org.springframework.http.ResponseEntity;

import org.springframework.ui.Model;

import org.springframework.web.bind.annotation.RequestMapping;

下载功能方法

@RequestMapping(value="/download")

    public ResponseEntity<byte[]> download(HttpServletRequest request,

            Model model)throws Exception {

       //下载文件路径

       String path = request.getServletContext().getRealPath("/WEB-INF/resource/upload/");

       System.out.println("path:"+path);

       File file = new File(path + File.separator + "test.txt");

       System.out.println(file.toString());

       HttpHeaders headers = new HttpHeaders(); 

       //下载显示的文件名，解决中文名称乱码问题 

       String downloadFielName = new String("test.txt".getBytes("UTF-8"),"iso-8859-1");

       //通知浏览器以attachment（下载方式）打开图片

       headers.setContentDispositionFormData("attachment", downloadFielName);

       //application/octet-stream ： 二进制流数据（最常见的文件下载）。

       headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);

       return new ResponseEntity<byte[]>(FileUtils.readFileToByteArray(file),   

               headers, HttpStatus.CREATED); 

    }