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压缩文件夹并返回浏览器压缩流

作者:互联网

依赖

<!--Java常用工具类-->
<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-all</artifactId>
<version>5.2.3</version>
</dependency>

代码

//生成zip文件
ZipUtil.zip(templateDir + "rb/");
//TODO 将压缩包流返回
String url = templateDir + "rb.zip";
File file = new File(url);
InputStream fis = new BufferedInputStream(new FileInputStream(file));
byte[] buffer = new byte[fis.available()];
fis.read(buffer);
fis.close();
response.reset();
String excelTitle = "历史数据";
String fileName = URLEncoder.encode(excelTitle, "UTF-8").replaceAll("\\+", "%20");
// 设置response的Header
response.setHeader("Content-disposition", "attachment;filename*=utf-8''" + fileName + ".zip");
response.setContentType("application/x-download;charset=utf-8");
OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
toClient.write(buffer);
toClient.flush();
toClient.close();
//删除文件夹下文件
delAllFile(templateDir + "rb/");

工具方法
public static boolean delAllFile(String path) {
boolean flag = false;
File file = new File(path);
if (!file.exists()) {
return flag;
}
if (!file.isDirectory()) {
return flag;
}
String[] tempList = file.list();
File temp = null;
for (int i = 0; i < tempList.length; i++) {
if (path.endsWith(File.separator)) {
temp = new File(path + tempList[i]);
} else {
temp = new File(path + File.separator + tempList[i]);
}
if (temp.isFile()) {
temp.delete();
}
if (temp.isDirectory()) {
delAllFile(path + "/" + tempList[i]);//先删除文件夹里面的文件
// delFolder(path + "/" + tempList[i]);//再删除空文件夹
flag = true;
}
}
return flag;
}

标签:浏览器,file,temp,压缩,文件夹,File,path,new,tempList
来源: https://www.cnblogs.com/gmf312/p/15638568.html