java 解压缩/压缩文件 ，单个和多个

package com.utils;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

public class ZipTest {

public static void zip_single() throws Exception{
File file = new File("d:" + File.separator + "add1.txt");
File zipFile = new File("d:" + File.separator + "hello.zip");
InputStream input = new FileInputStream(file);
ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(
zipFile));
zipOut.putNextEntry(new ZipEntry(file.getName()));
// 设置注释
zipOut.setComment("hello");
int temp = 0;
while((temp = input.read()) != -1){
zipOut.write(temp);
}
input.close();
zipOut.close();
}


public static void zip_many() throws Exception{
// 要被压缩的文件夹
String fileName1 = "D:" + File.separator + "tmp";
File file = new File(fileName1);
String zipFileName = "d:" + File.separator + file.getName()+".zip";
File zipFile = new File(zipFileName);

InputStream input = null;
ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(zipFile));
// zip的名称为
zipOut.setComment(file.getName());
if (file.isDirectory()) {
File[] files = file.listFiles();
for (int i = 0; i < files.length; ++i) {
input = new FileInputStream(files[i]);
zipOut.putNextEntry(new ZipEntry(file.getName() + File.separator + files[i].getName()));
int temp = 0;
while ((temp = input.read()) != -1) {
zipOut.write(temp);
}
input.close();
}
}
zipOut.close();
}

public static void gzip_single() throws Exception, IOException{
File file = new File("d:" + File.separator + "hello.zip");
File outFile = new File("d:" + File.separator + "unZipFile.txt");
ZipFile zipFile = new ZipFile(file);
ZipEntry entry = zipFile.getEntry("add1.txt");//hello.txt 为压缩包中文件的名称
InputStream input = zipFile.getInputStream(entry);
OutputStream output = new FileOutputStream(outFile);
int temp = 0;
while((temp = input.read()) != -1){
output.write(temp);
}
input.close();
output.close();
}

public static void gzip_mony() throws Exception, Exception{
// 要被压缩的文件夹
String zipFileName = "D:" + File.separator + "tmp.zip";
// 被解压到的目标文件夹
String newFileName = "D:" + File.separator + "decZip";
File file = new File(zipFileName);
File outFile = null;
ZipFile zipFile = new ZipFile(file);
ZipInputStream zipInput = new ZipInputStream(new FileInputStream(file));
ZipEntry entry = null;
InputStream input = null;
OutputStream output = null;
while ((entry = zipInput.getNextEntry()) != null) {
System.out.println("解压缩" + entry.getName() + "文件");
outFile = new File(newFileName + entry.getName());
if (!outFile.getParentFile().exists()) {
outFile.getParentFile().mkdir();
}
if (!outFile.exists()) {
outFile.createNewFile();
}
input = zipFile.getInputStream(entry);
output = new FileOutputStream(outFile);
int temp = 0;
while ((temp = input.read()) != -1) {
output.write(temp);
}
input.close();
output.close();
}
}

public static void main(String[] args) throws Exception {
// TODO 自动生成的方法存根
//zip_single();
// gzip_single();
// zip_many();
gzip_mony();
}

}