java程序压缩和解压zip文件

需要了解的知识汇总：
DeflaterOutputStream ：压缩类的基类。
ZipOutputStream ：DeflaterOutputStream的一个子类，把数据压缩成Zip文件格式
GZIPOutputStream ：DeflaterOutputStream的一个子类，把数据压缩成GZip文件格式

InflaterInputStream ：解压缩类的基类
ZipInputStream ：InflaterInputStream的一个子类，能解压缩Zip格式的数据
GZIPInputStream ：InflaterInputStream的一个子类，能解压缩Zip格式的数据

ZipEntry 类：表示 ZIP 文件条目
ZipFile 类：此类用于从 ZIP 文件读取条目

以zipentry来命名zip内文件列表。
以FileInputStream来读取文件。
以zipoutputstream输出流进行压缩文件写入。
逻辑简单好懂，附件带有实例，解压即可运行。
百度网盘实例链接：https://pan.baidu.com/s/1VSs-UqtU_3Lld2H7-1dMMg
提取码：mcb3

package com.crscd.server.web.cbtc2.filezip;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;

public class FileZip {
/*

author:zhao_anan 20190424 zip compress program
/
/public void zip(ZipOutputStream out, File f, String base, boolean first)
throws Exception {
if (first) {
if (f.isDirectory()) {
out.putNextEntry(new ZipEntry("/"));
base = base + f.getName();
first = false;
} else
base = f.getName();
}
if (f.isDirectory()) {
File[] fl = f.listFiles();
base = base + "/";
for (int i = 0; i < fl.length; i++) {
zip(out, fl[i], base + fl[i].getName(), first);
}
} else {
out.putNextEntry(new ZipEntry(base));
FileInputStream in = new FileInputStream(f);
int b;
System.out.println(base);
while ((b = in.read()) != -1) {
out.write(b);
}
in.close();
}
}*/

/*
unzip
/
/public void unZipFileByOpache(ZipFile zipFile, String unZipRoot)
throws Exception, IOException {
Enumeration<?> e = zipFile.entries();
ZipEntry zipEntry;
while (e.hasMoreElements()) {
zipEntry = (ZipEntry) e.nextElement();
InputStream fis = zipFile.getInputStream(zipEntry);
if (zipEntry.isDirectory()) {
} else {
File file = new File(unZipRoot + File.separator
- zipEntry.getName());
  System.out.println(unZipRoot + File.separator
- zipEntry.getName());
  File parentFile = file.getParentFile();
  parentFile.mkdirs();
  FileOutputStream fos = new FileOutputStream(file);
  byte[] b = new byte[1024];
  int len;
  while ((len = fis.read(b, 0, b.length)) != -1) {
  fos.write(b, 0, len);
  }
  fos.close();
  fis.close();
  }
  }
  }
public void ZipFile(String zipFileName, String inputFileName)
throws Exception {
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(
zipFileName));
File inputFile = new File(inputFileName);
zip(out, inputFile, "", true);
System.out.println("zip done");
out.close();
}

public void unZipFile(String unZipFileName, String unZipPath)
throws Exception {
//ZipFile zipFile = new ZipFile(unZipFileName);
//unZipFileByOpache(zipFile, unZipPath);
System.out.println("unZip Ok");
}

public static void main(String[] args) throws Exception {
FileZip fileZip = new FileZip();
// ZipFile("d:/testfile.zip","d:/TTPlayer");
fileZip.unZipFile("d:/20120206_SLIS_0002_DY2.zip", "d:/");
}*/

/**
unzip file 20190424
@auther: zhao_anan
@param unzipRoot

*/
public void unZipFile(String zipFilename, String unzipRoot)
throws Exception {
BufferedOutputStream bos = null;
FileInputStream fis = new FileInputStream(zipFilename);
BufferedInputStream bis = new BufferedInputStream(fis);

ZipInputStream zis = new ZipInputStream(bis);
ZipEntry entry = null;

int count = 0;
byte buf[] = new byte[1024];

while ((entry = zis.getNextEntry()) != null) {

    if (entry.isDirectory()) {

    } else {
        File file = new File(unzipRoot + File.separator
                + entry.getName());
        File parentFile = file.getParentFile();
        parentFile.mkdirs();

        bos = new BufferedOutputStream(new FileOutputStream(file));
        while ((count = zis.read(buf)) != -1) {
            bos.write(buf, 0, count);
        }
        bos.flush();
        bos.close();
    }
}
zis.close();

}
/**

zip
@param zipFilename
@param unzipRoot
*/
private void zip(ZipOutputStream out, File f, String base, boolean first)
throws Exception {
if (first) {
if (f.isDirectory()) {
out.putNextEntry(new ZipEntry("/"));
base = base + f.getName();
first = false;
} else
base = f.getName();
}
if (f.isDirectory()) {
File[] fl = f.listFiles();
base = base + "/";
for (int i = 0; i < fl.length; i++) {
zip(out, fl[i], base + fl[i].getName(), first);
}
} else {
out.putNextEntry(new ZipEntry(base));
// FileInputStream in = new FileInputStream(f);
BufferedReader in = new BufferedReader(new InputStreamReader(
new FileInputStream(f), "ISO8859_1"));
int b;
System.out.println(base);
while ((b = in.read()) != -1) {
out.write(b);
}
in.close();
}
}

public void zipFile(String zipFileName, String inputFileName)
throws Exception {
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(
zipFileName));
File inputFile = new File(inputFileName);
zip(out, inputFile, "", true);
System.out.println("zip done");
out.close();
}

/**
zip
@param zipFilename
@param unzipRoot
*/
private void zipList(ZipOutputStream out, String[] fileList, String base)
throws Exception {
base = base + "\";
for (int i = 0; i < fileList.length; i++) {
//zip(out, , base + fileList[i], first);
out.putNextEntry(new ZipEntry(fileList[i]));
BufferedReader in = new BufferedReader(new InputStreamReader(
new FileInputStream(base + fileList[i]), "ISO8859_1"));
int b;
System.out.println(base + fileList[i]);
while ((b = in.read()) != -1) {
out.write(b);
}
in.close();
}
}

public void zipListFile(String zipFileName, String inputListFiles, String baseurl)
throws Exception {
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(
zipFileName));
String[] FileList = inputListFiles.split(",");
zipList(out, FileList, baseurl);
System.out.println("zip done");
out.close();
}

public static void main(String[] args) {
```
//压缩测试
FileZip tFileZip = new FileZip();
String tinputFileName = "E:\\temp";
String baseurl = "E:\\temp";
String tzipFileName = "E:\\temp.zip";
String inputListFiles = "application-dev.yml,auto_arrange.yml";
try {
    //tFileZip.zipFile(tzipFileName, tinputFileName);
    tFileZip.zipListFile(tzipFileName, inputListFiles, baseurl);
    //tFileZip.unZipFile(tzipFileName, baseurl + "unzip");
} catch (Exception e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}
```
}
}

java程序压缩和解压zip文件

猜你喜欢