eclipse 步骤：
创建project，
创建package，
创建class
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压缩1
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package zip;
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.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
public class FileZip {
public FileZip(){}
public static boolean fileToZip(String sourceFilePath,String zipFilePath,String fileName){
boolean flag = false;
File sourceFile = new File(sourceFilePath);
FileInputStream fis = null;
BufferedInputStream bis = null;
FileOutputStream fos = null;
ZipOutputStream zos = null;
if(sourceFile.exists() == false){
System.out.println("待压缩的文件目录："+sourceFilePath+"不存在.");
}else{
try {
File zipFile = new File(zipFilePath + "/" + fileName +".zip");
if(zipFile.exists()){
System.out.println(zipFilePath + "目录下存在名字为:" + fileName +".zip" +"打包文件.");
}else{
File[] sourceFiles = sourceFile.listFiles();
if(null == sourceFiles || sourceFiles.length<1){
System.out.println("待压缩的文件目录：" + sourceFilePath + "里面不存在文件，无需压缩.");
}else{
fos = new FileOutputStream(zipFile);
zos = new ZipOutputStream(new BufferedOutputStream(fos));
byte[] bufs = new byte[1024*10];
for(int i=0;i<sourceFiles.length;i++){
//创建ZIP实体，并添加进压缩包
ZipEntry zipEntry = new ZipEntry(sourceFiles[i].getName());
zos.putNextEntry(zipEntry);
//读取待压缩的文件并写进压缩包里
fis = new FileInputStream(sourceFiles[i]);
bis = new BufferedInputStream(fis, 1024*10);
int read = 0;
while((read=bis.read(bufs, 0, 1024*10)) != -1){
zos.write(bufs,0,read);
}
}
flag = true;
}
}
} catch (FileNotFoundException e) {
e.printStackTrace();
throw new RuntimeException(e);
} catch (IOException e) {
e.printStackTrace();
throw new RuntimeException(e);
} finally{
//关闭流
try {
if(null != bis) bis.close();
if(null != zos) zos.close();
} catch (IOException e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}
}
return flag;
}
public static void main(String[] args){
String sourceFilePath = "C:\\xx\\code\\java";
String zipFilePath = "C:\\xx";
String fileName = "HelloWorld.java";
boolean flag = FileZip.fileToZip(sourceFilePath, zipFilePath, fileName);
if(flag){
System.out.println("文件打包成功!");
}else{
System.out.println("文件打包失败!");
}
}
}
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压缩2
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package zipfile;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
public class NewZip {
/**
* 完成的结果文件--输出的压缩文件
*/
File targetFile;
public NewZip() {
}
public NewZip(File target) {
targetFile = target;
if (targetFile.exists())
targetFile.delete();
}
/**
* 压缩文件
*
* @param srcfile
*/
public void zipFiles(File srcfile) {
ZipOutputStream out = null;
try {
out = new ZipOutputStream(new FileOutputStream(targetFile));
if (srcfile.isFile()) {
zipFile(srcfile, out, "");
} else {
File[] list = srcfile.listFiles();
for (int i = 0; i < list.length; i++) {
compress(list[i], out, "");
}
}
System.out.println("finish");
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (out != null)
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* 压缩文件夹里的文件
* 起初不知道是文件还是文件夹--- 统一调用该方法
*
* @param file
* @param out
* @param basedir
*/
private void compress(File file, ZipOutputStream out, String basedir) {
/* 判断是目录还是文件 */
if (file.isDirectory()) {
this.zipDirectory(file, out, basedir);
} else {
this.zipFile(file, out, basedir);
}
}
/**
* 压缩单个文件
*
* @param srcfile
*/
public void zipFile(File srcfile, ZipOutputStream out, String basedir) {
if (!srcfile.exists())
return;
//if the srcfile exists,continue to tar,
//if not exists,return .
byte[] buf = new byte[1024];
FileInputStream in = null;
try {
int len;
in = new FileInputStream(srcfile);
out.putNextEntry(new ZipEntry(basedir + srcfile.getName()));
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (out != null)
out.closeEntry();
if (in != null)
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* 压缩文件夹
*
* @param dir
* @param out
* @param basedir
*/
public void zipDirectory(File dir, ZipOutputStream out, String basedir) {
if (!dir.exists())
return;
File[] files = dir.listFiles();
for (int i = 0; i < files.length; i++) {
/* 递归 */
compress(files[i], out, basedir + dir.getName() + "/");
}
}
//测试
public static void main(String[] args){
File f = new File("C:\\xx\\code\\java");
new NewZip(new File("C:\\xx", f.getName() + ".zip")).zipFiles(f);
}
}
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解压
============================================================================
package unzip;
import java.io.*;
import java.nio.charset.Charset;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
public class UZipFile {
/**
* 解压到指定目录
*/
public static void unZipFiles(String zipPath,String descDir)throws IOException
{
unZipFiles(new File(zipPath), descDir);
}
/**
* 解压文件到指定目录
*/
@SuppressWarnings("rawtypes")
public static void unZipFiles(File zipFile,String descDir)throws IOException
{
File pathFile = new File(descDir);
if(!pathFile.exists())
{
pathFile.mkdirs();
}
//解决zip文件中有中文目录或者中文文件
ZipFile zip = new ZipFile(zipFile, Charset.forName("GBK"));
for(Enumeration entries = zip.entries(); entries.hasMoreElements();)
{
ZipEntry entry = (ZipEntry)entries.nextElement();
String zipEntryName = entry.getName();
InputStream in = zip.getInputStream(entry);
String outPath = (descDir+zipEntryName).replaceAll("\\*", "\\");;
//判断路径是否存在,不存在则创建文件路径
File file = new File(outPath.substring(0, outPath.lastIndexOf('\\')));
if(!file.exists())
{
file.mkdirs();
}
//判断文件全路径是否为文件夹,如果是上面已经上传,不需要解压
if(new File(outPath).isDirectory())
{
continue;
}
//输出文件路径信息
System.out.println(outPath);
OutputStream out = new FileOutputStream(outPath);
byte[] buf1 = new byte[1024];
int len;
while((len=in.read(buf1))>0)
{
out.write(buf1,0,len);
}
in.close();
out.close();
}
System.out.println("******************解压完毕********************");
}
public static void main(String[] args) throws IOException {
/**
* 解压文件
*/
File zipFile = new File("C:\\xx\\java.zip");
String path = "C:\\xx\\JAVA\\";
unZipFiles(zipFile, path);
}
}
参考 ：https://www.jb51.net/article/127844.htm
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结果：
C:\xx\JAVA\HelloWorld.class
C:\xx\JAVA\HelloWorld.java
******************解压完毕********************