package com.hx.util;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.io.*;
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import java.net.URLEncoder;
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public class DownFileUtil {
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/**
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* 下载文件工具
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*
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* @param path
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* 完整路径（可用simpleToof工具获取）
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*/
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public static void DownFile(HttpServletRequest request,HttpServletResponse response,String path) {
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final String userAgent = request.getHeader("USER-AGENT");
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try {
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// AdminUpload adminUpload = dm.find(AdminUpload.class, fileName);
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// String str =adminUpload.getPath();
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String filePath = path;
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// System.out.println("path"+ServletActionContext.getRequest().getRealPath("/")
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// + filePath);
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// File downfile = new
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// File(ServletActionContext.getRequest().getRealPath("/") +
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// filePath);
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File downfile = new File(filePath);
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String filename = "";
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if(userAgent.equals("MSIE")){//IE浏览器
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filename = URLEncoder.encode(downfile.getName(),"UTF8");
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}else if(userAgent.equals("Mozilla")){//google,火狐浏览器
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filename = new String(downfile.getName().getBytes(), "ISO8859-1");
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}else{
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filename = URLEncoder.encode(downfile.getName(),"UTF8");//其他浏览器
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}
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InputStream fis = new BufferedInputStream(new FileInputStream(
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downfile));
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byte[] buffer = new byte[fis.available()];
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fis.read(buffer);
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fis.close();
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response.reset();
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response.addHeader("Content-Disposition",
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"attachment;filename=" + filename);
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response.addHeader("Content-Length",
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"" + downfile.length());
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OutputStream toClient = new BufferedOutputStream(
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response.getOutputStream());
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response.setContentType(
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"application/octet-stream");
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toClient.write(buffer);
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toClient.flush();
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toClient.close();
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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/**
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* 下载文件工具（提示选择路径）
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*
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* @param path
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* 完整路径（可用simpleToof工具获取）
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*/
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public static void DownFileTips(HttpServletRequest request,HttpServletResponse response,String path) {
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final String userAgent = request.getHeader("USER-AGENT");
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try {
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// AdminUpload adminUpload = dm.find(AdminUpload.class, fileName);
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// String str =adminUpload.getPath();
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String filePath = path;
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// System.out.println("path"+ServletActionContext.getRequest().getRealPath("/")
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// + filePath);
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// File downfile = new
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// File(ServletActionContext.getRequest().getRealPath("/") +
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// filePath);
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File downfile = new File(filePath);
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String filename = "";
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if(userAgent.equals("MSIE")){//IE浏览器
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filename = URLEncoder.encode(downfile.getName(),"UTF8");
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}else if(userAgent.equals("Mozilla")){//google,火狐浏览器
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filename = new String(downfile.getName().getBytes(), "ISO8859-1");
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}else{
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filename = URLEncoder.encode(downfile.getName(),"UTF8");//其他浏览器
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}
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InputStream fis = new BufferedInputStream(new FileInputStream(
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downfile));
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byte[] buffer = new byte[fis.available()];
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fis.read(buffer);
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fis.close();
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response.addHeader("Content-Disposition", "attachment;filename="+ new String(filename.getBytes()));
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OutputStream toClient= new BufferedOutputStream(response.getOutputStream());
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response.setContentType("application/vnd.ms-excel;charset=utf-8");
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toClient.write(buffer);
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toClient.flush();
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toClient.close();
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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/**
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* 下载文件工具（提示选择路径）
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*
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* @param downfile
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* 导出的文件
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* @param fileName
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* 导出的文件名称
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*/
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public static void DownFileTips(HttpServletRequest request, HttpServletResponse response, File downfile, String fileName) {
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final String userAgent = request.getHeader("USER-AGENT");
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try {
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if(StringUtils.isEmpty(fileName)){
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fileName = downfile.getName();
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}
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String filename = "";
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if(userAgent.equals("MSIE")){//IE浏览器
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filename = URLEncoder.encode(fileName,"UTF8");
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}else if(userAgent.equals("Mozilla")){//google,火狐浏览器
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filename = new String(fileName.getBytes(), "ISO8859-1");
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}else{
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filename = URLEncoder.encode(fileName,"UTF8");//其他浏览器
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}
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InputStream fis = new BufferedInputStream(new FileInputStream(
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downfile));
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byte[] buffer = new byte[fis.available()];
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fis.read(buffer);
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fis.close();
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response.addHeader("Content-Disposition", "attachment;filename="+ filename);
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OutputStream toClient= new BufferedOutputStream(response.getOutputStream());
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response.setContentType("application/vnd.ms-excel;charset=utf-8");
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toClient.write(buffer);
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toClient.flush();
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toClient.close();
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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