ZipUtils 工具类 - Java

import java.io.Closeable;
import java.io.IOException;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

/**
* 通过Java的Zip输入输出流实现压缩和解压文件
*/
public final class ZipUtils {
/**
* 压缩文件
* @param filePath 待压缩的文件路径
* @return 压缩后的文件
*/
public static File zip(String filePath) {
File target = null;
File source = new File(filePath);
if (source.exists()) {
// 压缩文件名=源文件名.zip
String zipName = source.getName() + ".zip";
target = new File(source.getParent(), zipName);
if (target.exists()) {
target.delete(); // 删除旧的文件
}
FileOutputStream fos = null;
ZipOutputStream zos = null;
try {
fos = new FileOutputStream(target);
zos = new ZipOutputStream(new BufferedOutputStream(fos));
// 添加对应的文件Entry
addEntry("/", source, zos);
} catch (IOException e) {
throw new RuntimeException(e);
} finally {
closeQuietly(zos, fos);
}
}
return target;
}

/**
* 扫描添加文件Entry
* @param base  基路径
* @param source  源文件
* @param zos Zip文件输出流
* @throws IOException
*/
private static void addEntry(String base, File source, ZipOutputStream zos) throws IOException {
// 按目录分级，形如：/aaa/bbb.txt
String entry = base + source.getName();
if (source.isDirectory()) {
for (File file : source.listFiles()) {
// 递归列出目录下的所有文件，添加文件Entry
addEntry(entry + "/", file, zos);
}
} else {
FileInputStream fis = null;
BufferedInputStream bis = null;
try {
byte[] buffer = new byte[1024 * 10];
fis = new FileInputStream(source);
bis = new BufferedInputStream(fis, buffer.length);
int read = 0;
zos.putNextEntry(new ZipEntry(entry));
while ((read = bis.read(buffer, 0, buffer.length)) != -1) {
zos.write(buffer, 0, read);
}
zos.closeEntry();
} finally {
closeQuietly(bis, fis);
}
}
}

/**
* 关闭一个或多个流对象
*
* @param closeables
*            可关闭的流对象列表
* @throws IOException
*/
public static void close(Closeable... closeables) throws IOException {
if (closeables != null) {
for (Closeable closeable : closeables) {
if (closeable != null) {
closeable.close();
}
}
}
}

/**
* 关闭一个或多个流对象
*
* @param closeables
*            可关闭的流对象列表
*/
public static void closeQuietly(Closeable... closeables) {
try {
close(closeables);
} catch (IOException e) {
// do nothing
}
}

/**
* 解压文件
* @param filePath 压缩文件路径
*/
public static void unzip(String filePath) {
File source = new File(filePath);
if (source.exists()) {
ZipInputStream zis = null;
BufferedOutputStream bos = null;
try {
zis = new ZipInputStream(new FileInputStream(source));
ZipEntry entry = null;
while ((entry = zis.getNextEntry()) != null && !entry.isDirectory()) {
File target = new File(source.getParent(), entry.getName());
if (!target.getParentFile().exists()) {
// 创建文件父目录
target.getParentFile().mkdirs();
}
// 写入文件
bos = new BufferedOutputStream(new FileOutputStream(target));
int read = 0;
byte[] buffer = new byte[1024 * 10];
while ((read = zis.read(buffer, 0, buffer.length)) != -1) {
bos.write(buffer, 0, read);
}
bos.flush();
}
zis.closeEntry();
} catch (IOException e) {
throw new RuntimeException(e);
} finally {
closeQuietly(zis, bos);
}
}
}
/**
* 解压文件
* @param filePath 压缩文件路径
* @param targetPath  目标目录
*/
public static void unzip(String filePath,String targetPath) {
File source = new File(filePath);
if (source.exists()) {
ZipInputStream zis = null;
BufferedOutputStream bos = null;
try {
zis = new ZipInputStream(new FileInputStream(source));
ZipEntry entry = null;
File f = new File(targetPath);
if(!f.exists()){
f.mkdirs();
}else{
clearFiles(targetPath);
f.mkdirs();
}
while ((entry = zis.getNextEntry()) != null && !entry.isDirectory()) {
File target = new File(f, entry.getName());
if (!target.getParentFile().exists()) {
// 创建文件父目录
target.getParentFile().mkdirs();
}
// 写入文件
bos = new BufferedOutputStream(new FileOutputStream(target));
int read = 0;
byte[] buffer = new byte[1024 * 10];
while ((read = zis.read(buffer, 0, buffer.length)) != -1) {
bos.write(buffer, 0, read);
}
bos.flush();
}
zis.closeEntry();
} catch (IOException e) {
throw new RuntimeException(e);
} finally {
closeQuietly(zis, bos);
}
}
}
//删除文件和目录
private static void clearFiles(String path){
File file = new File(path);
if(file.exists()){
deleteFile(file);
}
}
private static void deleteFile(File file){
if(file.isDirectory()){
File[] files = file.listFiles();
for(int i=0; i<files.length; i++){
deleteFile(files[i]);
}
}
file.delete();
}
}