java查询本地文件夹动态显示并下载文件

package com.artpower.controller; import java.io.File; import java.io.IOException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; 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.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; @Controller public class ArtPowerController { @RequestMapping("gifts.action") public ModelAndView gifts(HttpServletRequest request, HttpServletResponse response) { request.getRequestURL(); System.out.println("--request.getRequestUrl--"); System.out.println(request.getRequestURL()); File file = new File("D:\\gifts"); //获取文件名 String[] arr = file.list(); for (int i = 0; i < arr.length; i++) { System.out.println(arr[i]); } ModelAndView mav = new ModelAndView(); mav.addObject("arr", arr); mav.setViewName("gifts"); return mav; } @RequestMapping("download.action") public ResponseEntity<byte[]> download(String down) throws IOException { byte[] by = down.getBytes("ISO-8859-1"); down = new String(by,"utf-8"); String path = "D:\\gifts/" + down; System.out.println("**path**"); System.out.println(path); File file = new File(path); HttpHeaders headers = new HttpHeaders(); String fileName = new String(down.getBytes("utf-8"), "iso-8859-1"); headers.setContentDispositionFormData("attachement", fileName); headers.setContentType(MediaType.APPLICATION_OCTET_STREAM); return new ResponseEntity<byte[]>(FileUtils.readFileToByteArray(file), headers, HttpStatus.CREATED); } }