下载文件打包 zip java

Demo:

package com.xmjr.controller.sys;


import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;


import javax.servlet.http.HttpServletResponse;


import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;


@Controller
@RequestMapping("/test")
public class Test {
    @RequestMapping(value = "/downloadftp", method = RequestMethod.GET)
    public String moredownload(HttpServletResponse response) {
        // 生成的ZIP文件名为Demo.zip
        String tmpFileName = "demo.zip";
        String FilePath = "C:\\Users\\Administrator\\Desktop\\";
        byte[] buffer = new byte[1024];
        String strZipPath = FilePath + tmpFileName;
        try {
            ZipOutputStream out = new ZipOutputStream(new FileOutputStream(strZipPath));
            // 需要同时下载的两个文件result.txt ，source.txt
            List<File> FileList = new ArrayList<>();
            FileList.add(new File(FilePath + "result.zip"));
            FileList.add(new File(FilePath + "source.zip"));
            for (int i = 0; i < FileList.size(); i++) {
                FileInputStream fis = new FileInputStream(FileList.get(i));
                out.putNextEntry(new ZipEntry(FileList.get(i).getName()));
                // 设置压缩文件内的字符编码，不然会变成乱码
                // out.setEncoding("GBK");
                int len;
                // 读入需要下载的文件的内容，打包到zip文件
                while ((len = fis.read(buffer)) > 0) {
                    out.write(buffer, 0, len);
                }
                out.closeEntry();
                fis.close();
            }
            out.close();
            downFile(response, tmpFileName);
        } catch (Exception e) {
            System.out.println("压缩时出错了！");
        }
        return null;
    }


    private void downFile(HttpServletResponse response, String str) {
        try {
            String FilePath = "C:\\Users\\Administrator\\Desktop\\";
            String path = FilePath + str;
            File file = new File(path);
            if (file.exists()) {
                InputStream ins = new FileInputStream(path);
                BufferedInputStream bins = new BufferedInputStream(ins);
                // 放到缓冲流里面
                OutputStream outs = response.getOutputStream();// 获取文件输出IO流
                BufferedOutputStream bouts = new BufferedOutputStream(outs);
                response.setContentType("application/x-download");
                // 设置response内容的类型
                response.setHeader("Content-disposition",
                        "attachment;filename=" + URLEncoder.encode(str, "UTF-8"));
                // 设置头部信息
                int bytesRead = 0;
                byte[] buffer = new byte[8192];
                // 开始向网络传输文件流
                while ((bytesRead = bins.read(buffer, 0, 8192)) != -1) {
                    bouts.write(buffer, 0, bytesRead);
                }
                bouts.flush();// 这里一定要调用flush()方法
                ins.close();
                bins.close();
                outs.close();
                bouts.close();
            } else {
                // response.sendRedirect("../error.jsp");
            }
        } catch (IOException e) {
            System.out.println("下载出错了！");
        }


    }
}