原生java 压缩解压zip文件

时间:2023-03-09 00:11:05
原生java 压缩解压zip文件
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.charset.Charset;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream; public class ZipUtil { static int k = 1; // 定义递归次数变量 public static void main(String[] args) {
compression("D:\\1111", "D:\\usr\\oracle\\weblogic\\user_projects\\domains\\spsj\\files\\spdbFolder\\T0\\HB11512900H000120161130001220112.zip");
decompression("D:\\usr\\oracle\\weblogic\\user_projects\\domains\\spsj\\files\\spdbFolder\\T0\\HB11512900H00012016113000122011.zip", "GBK", "D:\\1222");
} /**
*
* @Description (压缩)
* @throws Exception
*/
private static void compression(String inputFilePath, String outPutZip) {
try {
String zipFileName = outPutZip;
File inputFile = new File(inputFilePath);
System.out.println("压缩中...");
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(
zipFileName));
BufferedOutputStream bo = new BufferedOutputStream(out);
zip(out, inputFile, inputFile.getName(), bo); bo.close();
out.close(); // 输出流关闭
System.out.println("压缩完成");
} catch (Exception e) {
e.printStackTrace();
}
} private static void zip(ZipOutputStream out, File inputFile, String base, BufferedOutputStream bo) throws Exception { // 方法重载
if (inputFile.isDirectory()) {
File[] fl = inputFile.listFiles();
if (fl.length == 0) {
out.putNextEntry(new ZipEntry(base + "/")); // 创建zip压缩进入点base
System.out.println(base + "/");
}
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 {
out.putNextEntry(new ZipEntry(base)); // 创建zip压缩进入点base
System.out.println(base);
FileInputStream in = new FileInputStream(inputFile);
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
}
} /**
*
* @Description (解压)
* @param zipPath zip路径
* @param charset 编码
* @param outPutPath 输出路径
*/
private static void decompression(String zipPath, String charset, String outPutPath) {
long startTime=System.currentTimeMillis();
try {
ZipInputStream Zin=new ZipInputStream(new FileInputStream(zipPath), Charset.forName(charset));//输入源zip路径
BufferedInputStream Bin=new BufferedInputStream(Zin);
String Parent = outPutPath; //输出路径(文件夹目录)
File Fout=null;
ZipEntry entry;
try {
while((entry = Zin.getNextEntry())!=null && !entry.isDirectory()){
Fout=new File(Parent,entry.getName());
if(!Fout.exists()){
(new File(Fout.getParent())).mkdirs();
}
FileOutputStream out=new FileOutputStream(Fout);
BufferedOutputStream Bout=new BufferedOutputStream(out);
int b;
while((b=Bin.read())!=-1){
Bout.write(b);
}
Bout.close();
out.close();
System.out.println(Fout+"解压成功");
}
Bin.close();
Zin.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
long endTime=System.currentTimeMillis();
System.out.println("耗费时间: "+(endTime-startTime)+" ms");
} }