文件流，gzip解压，压缩

目录 文件画布 写入 （空文件

Fout=new File(Parent,entry.getName());）

FileOutputStream out=new FileOutputStream(Fout);

BufferedOutputStream Bout=new BufferedOutputStream(out);

其他流量基于基础包装文件--文件流---字节流 顺序

pbf一般是形成后再压缩

目录：

(new File(Fout.getParent())).mkdirs(); 建好目录

流：

File Fout=new File(Parent,entry.getName());） 建好空白画布--具体文件名

FileOutputStream fileOutputStream = new FileOutputStream("C:\\Desktop\\consiste.xlsx");

或

FileOutputStream out=new FileOutputStream(Fout);

BufferedOutputStream Bout=new BufferedOutputStream(out); 字符流

或ByteArrayOutputStream o = new ByteArrayOutputStream(1024) 字节流

Bout.toByteArray()

其他流量基于基础包装文件--文件流---字节流 顺序

需要读写的流经过 GZIPInputStream GZIPOutputStream 对应构造函数包装就有了对应加压解压功能

File file = new File("C:\\Users\\h.yu\\Downloads\\pbf\\pbf\\1669358890231_1669358895639.z.pbf");

File fileo = new File("C:\\Users\\h3.yu\\Downloads\\pbf\\pbf");

byte[] output = null;

FileInputStream fis = new FileInputStream(file);

File Fout =new File(fileo,"3313.pbf");

FileOutputStream out=new FileOutputStream(Fout);

GzipUtils.decompress(fis,out);

import java.io.InputStream;

import java.io.OutputStream;

import java.util.zip.GZIPInputStream;

import java.util.zip.GZIPOutputStream;

public class GzipUtils {

/**

* 数据解压缩

*

* @param is

* @param os

* @throws Exception

*/

public static void decompress(InputStream is, OutputStream os)

throws Exception {

GZIPInputStream gis = new GZIPInputStream(is);

int count;

byte data[] = new byte[1024];

while ((count = gis.read(data, 0, 1024)) != -1) {

os.write(data, 0, count);

}

gis.close();

}

/**

* 数据压缩

*

* @param is

* @param os

* @throws Exception

*/

public static void compress(InputStream is, OutputStream os)

throws Exception {

GZIPOutputStream gos = new GZIPOutputStream(os);

int count;

byte data[] = new byte[1024];

while ((count = is.read(data, 0, 1024)) != -1) {

gos.write(data, 0, count);

}

gos.finish();

gos.flush();

gos.close();

}

}