java中有zip包，可以使用
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public void getZipFiles(String zipFile, String destFolder) throws IOException {
BufferedOutputStream dest = null;
ZipInputStream zis = new ZipInputStream(
new BufferedInputStream(
new FileInputStream(zipFile)));
ZipEntry entry;
while (( entry = zis.getNextEntry() ) != null) {
System.out.println( "Extracting: " + entry.getName() );
int count;
byte data[] = new byte[BUFFER];
if (entry.isDirectory()) {
new File( destFolder + "/" + entry.getName() ).mkdirs();
continue;
} else {
int di = entry.getName().lastIndexOf( '/' );
if (di != -1) {
new File( destFolder + "/" + entry.getName()
.substring( 0, di ) ).mkdirs();
}
}
FileOutputStream fos = new FileOutputStream( destFolder + "/"
+ entry.getName() );
dest = new BufferedOutputStream( fos );
while (( count = zis.read( data ) ) != -1)
dest.write( data, 0, count );
dest.flush();
dest.close();
}
}
rar的只能用第三方api，比如junrar
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;
public class JZip {
public static int iCompressLevel;//压缩比 取值范围为0~9
public static boolean bOverWrite;//是否覆盖同名文件 取值范围为True和False
@SuppressWarnings("unchecked")
private static ArrayList AllFiles = new ArrayList();
public static String sErrorMessage;
private String zipFilePath;
public ListFile srcMap;
public JZip () {
iCompressLevel = 9;
// bOverWrite=true;
}
public JZip(String zipFilePath) throws FileNotFoundException, IOException {
this.zipFilePath = zipFilePath;
}
@SuppressWarnings("unchecked")
public static ArrayList extract (String sZipPathFile , String sDestPath) {
ArrayList AllFileName = new ArrayList();
try {
//先指定压缩档的位置和档名,建立FileInputStream对象
FileInputStream fins = new FileInputStream(sZipPathFile);
//将fins传入ZipInputStream中
ZipInputStream zins = new ZipInputStream(fins);
ZipEntry ze = null;
byte ch[] = new byte[256];
while ((ze = zins.getNextEntry()) != null) {
File zfile = new File(sDestPath + ze.getName());
File fpath = new File(zfile.getParentFile().getPath());
if (ze.isDirectory()) {
if (!zfile.exists())
zfile.mkdirs();
zins.closeEntry();
} else {
if (!fpath.exists())
fpath.mkdirs();
FileOutputStream fouts = new FileOutputStream(zfile);
int i;
AllFileName.add(zfile.getAbsolutePath());
while ((i = zins.read(ch)) != -1)
fouts.write(ch, 0, i);
zins.closeEntry();
fouts.close();
}
}
fins.close();
zins.close();
sErrorMessage = "OK";
} catch (Exception e) {
System.err.println("Extract error:" + e.getMessage());
sErrorMessage = e.getMessage();
}
AllFiles.clear();
return AllFileName;
}
@SuppressWarnings({ "unchecked", "static-access" })
public static void compress (String sPathFile , boolean bIsPath , String sZipPathFile) {
try {
String sPath;
//先指定压缩档的位置及档名，建立一个FileOutputStream
FileOutputStream fos = new FileOutputStream(sZipPathFile);
//建立ZipOutputStream并将fos传入
ZipOutputStream zos = new ZipOutputStream(fos);
//设置压缩比
zos.setLevel(iCompressLevel);
if (bIsPath == true) {
searchFiles(sPathFile);
sPath = sPathFile;
} else {
File myfile = new File(sPathFile);
sPath = sPathFile.substring(0, sPathFile.lastIndexOf(myfile.separator) + 1);
AllFiles.add(myfile);
}
Object[] myobject = AllFiles.toArray();
ZipEntry ze = null;
//每个档案要压缩，都要透过ZipEntry来处理
FileInputStream fis = null;
BufferedReader in = null;
//byte[] ch = new byte[256];
for (int i = 0 ; i myobject.length ; i++) {
File myfile = (File) myobject[i];
if (myfile.isFile()) {
in = new BufferedReader(new InputStreamReader(new FileInputStream(myfile.getPath()),"iso8859-1"));
//以档案的名字当Entry，也可以自己再加上额外的路径
//例如 ze=new ZipEntry("test\\"+myfiles[i].getName());
//如此压缩档内的每个档案都会加test这个路径
ze = new ZipEntry(myfile.getPath().substring((sPath).length()));
//将ZipEntry透过ZipOutputStream的putNextEntry的方式送进去处理
fis = new FileInputStream(myfile);
zos.putNextEntry(ze);
int len = 0;
//开始将原始档案读进ZipOutputStream
while ((len = in.read()) != -1) {
zos.write(len);
}
fis.close();
zos.closeEntry();
}
}
zos.close();
fos.close();
AllFiles.clear();
sErrorMessage = "OK";
} catch (Exception e) {
System.err.println("Compress error:" + e.getMessage());
sErrorMessage = e.getMessage();
}
}
/*
这是一个递归过程，功能是检索出所有的文件名称
dirstr:目录名称
*/
@SuppressWarnings("unchecked")
private static void searchFiles (String dirstr) {
File tempdir = new File(dirstr);
if (tempdir.exists()) {
if (tempdir.isDirectory()) {
File[] tempfiles = tempdir.listFiles();
for (int i = 0 ; i tempfiles.length ; i++) {
if (tempfiles[i].isDirectory())
searchFiles(tempfiles[i].getPath());
else {
AllFiles.add(tempfiles[i]);
}
}
} else {
AllFiles.add(tempdir);
}
}
}
public String getZipFilePath() {
return zipFilePath;
}
public void setZipFilePath(String zipFilePath) {
this.zipFilePath = zipFilePath;
}
/**
* 解析zip文件得到文件名
* @return
* @throws FileNotFoundException
* @throws IOException
*/
public boolean parserZip() throws FileNotFoundException, IOException {
FileInputStream fis = new FileInputStream(zipFilePath);
ZipInputStream zis = new ZipInputStream(new BufferedInputStream(fis));
ZipEntry entry;
try {
srcMap = new ArrayListFile();
while ((entry = zis.getNextEntry()) != null) {
File file = new File(zipFilePath + File.separator + entry.getName());
srcMap.add(file);
}
zis.close();
fis.close();
return true;
} catch (IOException e) {
return false;
}
}
/**
*
* @param zipFileName 待解压缩的ZIP文件
* @param extPlace 解压后的文件夹
*/
public static void extZipFileList(String zipFileName, String extPlace) {
try {
ZipInputStream in = new ZipInputStream(new FileInputStream(
zipFileName));
File files = new File(extPlace);
files.mkdirs();
ZipEntry entry = null;
while ((entry = in.getNextEntry()) != null) {
String entryName = entry.getName();
if (entry.isDirectory()) {
File file = new File(files + entryName);
file.mkdirs();
System.out.println("创建文件夹:" + entryName);
} else {
OutputStream os = new FileOutputStream(files+File.separator + entryName);
// Transfer bytes from the ZIP file to the output file
byte[] buf = new byte[1024];
int len;
while ((len = in.read(buf)) 0) {
os.write(buf, 0, len);
}
os.close();
in.closeEntry();
System.out.println("解压文件:" + entryName);
}
}
} catch (IOException e) {
}
}
@SuppressWarnings("static-access")
public static void main(String args[]){
}
}
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
public class Test {
Enumeration enu = null;// 创建一个枚举型引用
ZipFile zf = null; // 创建一个Zip文件引用
ZipEntry ze = null;// 创建一个进行入Zip文件的引用
BufferedInputStream bis = null; // 创建一个字节型输入流
BufferedOutputStream bos = null;// 创建一个字节型输出流
public void zipFiles(){
try {
File f = new File("d:\\line.zip");
zf = new ZipFile(f);
enu = zf.entries();
while (enu.hasMoreElements()) {
ze = (ZipEntry) enu.nextElement();
if (ze.isDirectory()) {
new File("d:\\" + ze.getName()).mkdirs();
continue;
}
int count;
byte[] buffer = new byte[2048];
int bu = 2048;
bis = new BufferedInputStream(zf.getInputStream(ze));
FileOutputStream fos = new FileOutputStream("d:\\"
+ ze.getName());
bos = new BufferedOutputStream(fos, bu);
while ((count = bis.read()) != -1) {
bos.write(buffer, 0, count);
}
bos.flush();
bos.close();
bis.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
new Test().zipFiles();
}
}
1.代码如下：
[java] view plain copy
span style="font-size:18px;background-color: rgb(204, 204, 204);"package cn.gov.csrc.base.util;
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;
/**
* 将文件夹下面的文件
* 打包成zip压缩文件
*
* @author admin
*
*/
public final class FileToZip {
private FileToZip(){}
/**
* 将存放在sourceFilePath目录下的源文件，打包成fileName名称的zip文件，并存放到zipFilePath路径下
* @param sourceFilePath :待压缩的文件路径
* @param zipFilePath :压缩后存放路径
* @param fileName :压缩后文件的名称
* @return
*/
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.length1){
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;isourceFiles.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 = "D:\\TestFile";
String zipFilePath = "D:\\tmp";
String fileName = "12700153file";
boolean flag = FileToZip.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!");
}
}
}
/span
2.结果如下：
文件打包成功!
3.到D:/tmp下查看，你会发现生成了一个zip压缩包.
java.util.zip.*这个包下有ZipInputStream和ZipOutputStream这两个类，用于ZIP的读入解压，和生成ZIP文件的打包。
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;
import java.util.zip.GZIPInputStream;
import java.io.DataInputStream;
/**
* Description: 此类用于...
*
* @author wunaigang(2005-6-21)
* @version 1.0.0
*/
public class ZipManager {
/**
* zip压缩功能测试. 将d:\\temp\\zipout目录下的所有文件连同子目录压缩到d:\\temp\\out.zip.
*
* @param baseDir 所要压缩的目录名（包含绝对路径）
* @param objFileName 压缩后的文件名
* @throws Exception
*/
public void createZip(String baseDir, String objFileName) throws Exception {
File folderObject = new File(baseDir);
if (folderObject.exists()){
List fileList = getSubFiles(new File(baseDir));
//压缩文件名
ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(objFileName));
ZipEntry ze = null;
byte[] buf = new byte[1024];
int readLen = 0;
for (int i = 0; i fileList.size(); i++) {
File f = (File) fileList.get(i);
System.out.println("Adding: " + f.getPath() + f.getName());
//创建一个ZipEntry，并设置Name和其它的一些属性
ze = new ZipEntry(getAbsFileName(baseDir, f));
ze.setSize(f.length());
ze.setTime(f.lastModified());
//将ZipEntry加到zos中，再写入实际的文件内容
zos.putNextEntry(ze);
InputStream is = new BufferedInputStream(new FileInputStream(f));
while ((readLen = is.read(buf, 0, 1024)) != -1) {
zos.write(buf, 0, readLen);
}
is.close();
System.out.println("done...");
}
zos.close();
}else{
throw new Exception("this folder isnot exist!");
}
}
/**
* zip压缩功能测试. 将指定文件压缩后存到一压缩文件中
*
* @param baseDir 所要压缩的文件名
* @param objFileName 压缩后的文件名
* @return 压缩后文件的大小
* @throws Exception
*/
public long createFileToZip(String zipFilename,String sourceFileName) throws Exception {
File sourceFile = new File(sourceFileName);
byte[] buf = new byte[1024];
//压缩文件名
File objFile = new File(zipFilename);
ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(objFile));
ZipEntry ze = null;
//创建一个ZipEntry，并设置Name和其它的一些属性
ze = new ZipEntry(sourceFile.getName());
ze.setSize(sourceFile.length());
ze.setTime(sourceFile.lastModified());
//将ZipEntry加到zos中，再写入实际的文件内容
zos.putNextEntry(ze);
InputStream is = new BufferedInputStream(new FileInputStream(sourceFile));
int readLen = -1;
while ((readLen = is.read(buf, 0, 1024)) != -1) {
zos.write(buf, 0, readLen);
}
is.close();
zos.close();
return objFile.length();
}
/**
* zip压缩功能测试. 将指定文件压缩后存到一压缩文件中
*
* @param baseDir 所要压缩的文件名
* @param objFileName 压缩后的文件名
* @return 压缩后文件的大小
* @throws Exception
*/
public long createFileToZip(File sourceFile,File zipFile)throws IOException {
byte[] buf = new byte[1024];
//压缩文件名
File objFile = zipFile;
ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(objFile));
ZipEntry ze = null;
//创建一个ZipEntry，并设置Name和其它的一些属性
ze = new ZipEntry(sourceFile.getName());
ze.setSize(sourceFile.length());
ze.setTime(sourceFile.lastModified());
//将ZipEntry加到zos中，再写入实际的文件内容
zos.putNextEntry(ze);
InputStream is = new BufferedInputStream(new FileInputStream(sourceFile));
int readLen = -1;
while ((readLen = is.read(buf, 0, 1024)) != -1) {
zos.write(buf, 0, readLen);
}
is.close();
zos.close();
return objFile.length();
}
/**
* 测试解压缩功能. 将d:\\download\\test.zip连同子目录解压到d:\\temp\\zipout目录下.
*
* @throws Exception
*/
public void releaseZipToFile(String sourceZip, String outFileName)
throws IOException{
ZipFile zfile=new ZipFile(sourceZip);
System.out.println(zfile.getName());
Enumeration zList=zfile.entries();
ZipEntry ze=null;
byte[] buf=new byte[1024];
while(zList.hasMoreElements()){
//从ZipFile中得到一个ZipEntry
ze=(ZipEntry)zList.nextElement();
if(ze.isDirectory()){
continue;
}
//以ZipEntry为参数得到一个InputStream，并写到OutputStream中
OutputStream os=new BufferedOutputStream(new FileOutputStream(getRealFileName(outFileName, ze.getName())));
InputStream is=new BufferedInputStream(zfile.getInputStream(ze));
int readLen=0;
while ((readLen=is.read(buf, 0, 1024))!=-1) {
os.write(buf, 0, readLen);
}
is.close();
os.close();
System.out.println("Extracted: "+ze.getName());
}
zfile.close();
}
/**
* 取得指定目录下的所有文件列表，包括子目录.
*
* @param baseDir
* File 指定的目录
* @return 包含java.io.File的List
*/
private List getSubFiles(File baseDir) {
List ret = new ArrayList();
//File base=new File(baseDir);
File[] tmp = baseDir.listFiles();
for (int i = 0; i tmp.length; i++) {
if (tmp[i].isFile()) {
ret.add(tmp[i]);
}
if (tmp[i].isDirectory()) {
ret.addAll(getSubFiles(tmp[i]));
}
}
return ret;
}
/**
* 给定根目录，返回一个相对路径所对应的实际文件名.
*
* @param baseDir
* 指定根目录
* @param absFileName
* 相对路径名，来自于ZipEntry中的name
* @return java.io.File 实际的文件
*/
private File getRealFileName(String baseDir, String absFileName) {
String[] dirs = absFileName.split("/");
//System.out.println(dirs.length);
File ret = new File(baseDir);
//System.out.println(ret);
if (dirs.length 1) {
for (int i = 0; i dirs.length - 1; i++) {
ret = new File(ret, dirs[i]);
}
}
if (!ret.exists()) {
ret.mkdirs();
}
ret = new File(ret, dirs[dirs.length - 1]);
return ret;
}
/**
* 给定根目录，返回另一个文件名的相对路径，用于zip文件中的路径.
*
* @param baseDir
* java.lang.String 根目录
* @param realFileName
* java.io.File 实际的文件名
* @return 相对文件名
*/
private String getAbsFileName(String baseDir, File realFileName) {
File real = realFileName;
File base = new File(baseDir);
String ret = real.getName();
while (true) {
real = real.getParentFile();
if (real == null)
break;
if (real.equals(base))
break;
else {
ret = real.getName() + "/" + ret;
}
}
System.out.println("TTTTT" + ret);
return ret;
}
public void testReadZip() throws Exception{
String baseDir="d:\\temp\\zipout";
ZipFile zfile=new ZipFile("d:\\download\\src.zip");
System.out.println(zfile.getName());
Enumeration zList=zfile.entries();
ZipEntry ze=null;
byte[] buf=new byte[1024];
while(zList.hasMoreElements()){
//从ZipFile中得到一个ZipEntry
ze=(ZipEntry)zList.nextElement();
if(ze.isDirectory()){
continue;
}
//以ZipEntry为参数得到一个InputStream，并写到OutputStream中
OutputStream os=new BufferedOutputStream(new FileOutputStream(getRealFileName(baseDir, ze.getName())));
InputStream is=new BufferedInputStream(zfile.getInputStream(ze));
int readLen=0;
while ((readLen=is.read(buf, 0, 1024))!=-1) {
os.write(buf, 0, readLen);
}
is.close();
os.close();
System.out.println("Extracted: "+ze.getName());
}
zfile.close();
}
public static void main(String args[]){
ZipManager manager = new ZipManager();
try {
//manager.releaseZipToFile("c:\\test.zip","c:\\test");
manager.testReadZip();
}
catch (Exception e) {}
System.out.println("over");
}
}
B/S结构的环境中？那最好不要这样设计，，，，使用applet是可以做到，但要求权限放得很低，并且目前的浏览器很麻烦配置。
可以考虑post到服务器端处理