将文件中的文件以及文件夹压缩，并下载

文件下载

 最近学习文件下载，上网查阅了许多的资料。借鉴了一位大佬的经验。得出如下结果：

        这是这位大佬博客地址：

  http://blog.csdn.net/z69183787/article/details/38555913

       接下来是代码实现

        1.Controller 实现

/**
* Created by 鸿鹄 on 2018/1/24.
*/
@RequestMapping("/fileDown")
@RestController
public class FileControllers {
@Autowired
urlConf urlConf;
@Autowired
MyZipCompressing zipFile;
@RequestMapping("/ZipDown")
public String FileDown(
String name,
HttpServletRequest request,
HttpServletResponse response) throws Exception {
String fileName = UUID.randomUUID().toString() + ".zip";
String zipFileName="D:\\"+fileName;
zipFile.zip(zipFileName,
new File("D:\\myfile"));
// 在服务器端创建打包下载的临时文件
this.downloadFile(new File(zipFileName),response,true);
return null;
}
/**
* 将压缩文件导入Response响应头中
* */
public void downloadFile(File file,HttpServletResponse response,boolean isDelete) {
try {
// 以流的形式下载文件。
BufferedInputStream fis = new BufferedInputStream(new FileInputStream(file.getPath()));
byte[] buffer = new byte[fis.available()];
fis.read(buffer);
fis.close();
// 清空response
response.reset();
OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
response.setContentType("application/octet-stream");
response.setHeader("Content-Disposition", "attachment;filename=" + new String(file.getName().getBytes("UTF-8"),"ISO-8859-1"));
toClient.write(buffer);
toClient.flush();
toClient.close();
if(isDelete)
{
file.delete();        //是否将生成的服务器端文件删除
}
}
catch (IOException ex) {
ex.printStackTrace();
}
}
}

     
 2.MyZipCompress工具类实现

                 

/**
* Created by 鸿鹄 on 2018/1/24.
*/
@Component
public class MyZipCompressing {
private int k = 1; // 定义递归次数变量

public MyZipCompressing() {
// TODO Auto-generated constructor stub
}
/**
* 压缩方法
* output 输出
* input 输入
* */
public void zip(String zipFileName, File inputFile) throws Exception {
System.out.println("压缩中...");
//定义一个压缩流
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFileName));
//缓存输出流
BufferedOutputStream bo = new BufferedOutputStream(out);
//调用重载方法
zip(out, inputFile, inputFile.getName(), bo);
bo.close();
out.close(); // 输出流关闭
System.out.println("压缩完成");
}
/*
*base 当前文件的文件夹名字
* */
public void zip(ZipOutputStream out, File f, String base,BufferedOutputStream bo) throws Exception {
// 方法重载
//判断是否是目录
if (f.isDirectory()) {
/*创建文件数组*/
File[] fl = f.listFiles();
System.out.println("fl.length="+fl.length);
//如果是空文件将文件压入压缩中
if (fl.length == 0) {
out.putNextEntry(new ZipEntry(base + "/")); // 创建zip压缩进入点base
System.out.println(base + "/");
}
//将文件逐个递归
for (int i = 0; i < fl.length; i++) {
zip(out, fl[i], base + "/" + fl[i].getName(), bo); // 递归遍历子文件夹
}
System.out.println("第" + k + "次递归");
k++;
} else {
//如果不是文件夹，直接打入压缩包
out.putNextEntry(new ZipEntry(base)); // 创建zip压缩进入点base
System.out.println(base);
//递归结束，将缓存buffer
FileInputStream in = new FileInputStream(f);
BufferedInputStream bi = new BufferedInputStream(in);
int b;
while ((b = bi.read()) != -1) {
bo.write(b); // 将字节流写入当前zip目录
}
bi.close();
in.close(); // 输入流关闭
}
}
}

    这是我吸取大佬精华的归纳和实现，贴上博客以备以后自己可以用。也希望能够帮助有需求的人解决问题！