调用org.apache.tools.zip实现压缩

不信网恋

/*
调用org.apache.tools.zip实现压缩。
夜可以使用java.util.zip不过如果是中文的话，
解压缩的时候文件名字会是乱码。原因是解压缩软件的编码格式跟
java.util.zip.ZipInputStream的编码字符集不同
java.util.zip.ZipInputStream的字符集固定是UTF-8
*/
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import org.apache.tools.zip.*;
public class ZipCompress {
/** 参数一：需要压缩的文件或文件夹路径,参数二：压缩后的文件名 */
public void zip(String inputFile, String zipFileName) {
zip(new File(inputFile), zipFileName);
}
/** 参数一：需要压缩的File对象,参数二：压缩后的文件名 */
public void zip(File inputFile, String zipFileName) {
try {
ZipOutputStream zOut = new ZipOutputStream(new FileOutputStream(
new String(zipFileName.getBytes("gb2312"))));
System.out.println("压缩-->开始");
zip(zOut, inputFile, "");
System.out.println("压缩-->结束");
zOut.close();
} catch (Exception e) {
e.printStackTrace();
}
}
/** 参数一：压缩输出流对象(此流用于写入数据并生成文件),参数二：需要压缩的File对象,参数三：根目录,即压缩包中的文件夹目录 */
public void zip(ZipOutputStream zOut, File file, String base) {
try {
System.out.println("正在压缩-->" + file.getName());
if (file.isDirectory()) {
File[] listFiles = file.listFiles();
/*
* 此处解决压缩未端数据不正确,这是判断当前是什么系统,普遍是Windows所以在这里就不注释不做此判断. if
* (System.getProperty("os.name").startsWith("Windows")) { base =
* base.length() == 0 ? "" : base + "\\"; out.putNextEntry(new
* ZipEntry(base)); } else { base = base.length() == 0 ? "" :
* base + "/"; out.putNextEntry(new ZipEntry(base)); }
* 一般来说用"/"符号来分割出文件与文件夹是没有问题的
*/
zOut.putNextEntry(new ZipEntry(base + "/"));
base = base.length() == 0 ? "" : base + "/";
for (int i = 0; i < listFiles.length; i++) {
zip(zOut, listFiles, base + listFiles.getName());
// System.out.println(new
// String(fl.getName().getBytes("gb2312")));
}
} else {
if (base == "") {
base = file.getName();
}
zOut.putNextEntry(new ZipEntry(base));
System.out.println(file.getPath() + "," + base);
FileInputStream in = new FileInputStream(file);
int len;
while ((len = in.read()) != -1)
zOut.write(len);
in.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
private void createDirectory(String directory, String subDirectory) {
String dir[];
File fl = new File(directory);
try {
if (subDirectory == "" && fl.exists() != true)
fl.mkdir();
else if (subDirectory != "") {
dir = subDirectory.replace('\\', '/').split("/");
for (int i = 0; i < dir.length; i++) {
File subFile = new File(directory + File.separator + dir);
if (subFile.exists() == false)
subFile.mkdir();
directory += File.separator + dir;
}
}
} catch (Exception ex) {
System.out.println(ex.getMessage());
}
}
public void unZip(String zipFileName, String outputDirectory) {
try {
ZipFile zipFile = new ZipFile(zipFileName);
java.util.Enumeration e = zipFile.getEntries();
ZipEntry zipEntry = null;
createDirectory(outputDirectory, "");
while (e.hasMoreElements()) {
zipEntry = (ZipEntry) e.nextElement();
System.out.println("正在解压: " + zipEntry.getName());
String name = null;
if (zipEntry.isDirectory()) {
name = zipEntry.getName();
name = name.substring(0, name.length() - 1);
File f = new File(outputDirectory + File.separator + name);
f.mkdir();
System.out.println("创建目录：" + outputDirectory
+ File.separator + name);
} else {
String fileName = zipEntry.getName();
fileName = fileName.replace('\\', '/');
// System.out.println("测试文件1：" +fileName);
if (fileName.indexOf("/") != -1) {
createDirectory(outputDirectory, fileName.substring(0,
fileName.lastIndexOf("/")));
fileName = fileName.substring(
fileName.lastIndexOf("/") + 1, fileName
.length());
}
File f = new File(outputDirectory + File.separator
+ zipEntry.getName());
f.createNewFile();
InputStream in = zipFile.getInputStream(zipEntry);
FileOutputStream out = new FileOutputStream(f);
byte[] by = new byte[1024];
int c;
while ((c = in.read(by)) != -1) {
out.write(by, 0, c);
}
out.close();
in.close();
}
}
// 删除文件不能在这里删，因为文件正在使用，应在上传那处删
// 解压后，删除压缩文件
// File zipFileToDel = new File(zipFileName);
// zipFileToDel.delete();
// System.out.println("正在删除文件："+ zipFileToDel.getCanonicalPath());
// //删除解压后的那一层目录
// delALayerDir(zipFileName, outputDirectory);
} catch (Exception ex) {
System.out.println(ex.getMessage());
}
}
/**
* 删掉一层目录
*
* @param zipFileName
* @param outputDirectory
*/
public void delALayerDir(String zipFileName, String outputDirectory) {
String[] dir = zipFileName.replace('\\', '/').split("/");
String fileFullName = dir[dir.length - 1]; // 得到aa.zip
int pos = -1;
pos = fileFullName.indexOf(".");
String fileName = fileFullName.substring(0, pos); // 得到aa
String sourceDir = outputDirectory + File.separator + fileName;
try {
copyFile(new File(outputDirectory), new File(sourceDir), new File(
sourceDir));
deleteSourceBaseDir(new File(sourceDir));
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 将sourceDir目录的文件全部copy到destDir中去
*/
public void copyFile(File destDir, File sourceBaseDir, File sourceDir)
throws Exception {
File[] lists = sourceDir.listFiles();
if (lists == null)
return;
for (int i = 0; i < lists.length; i++) {
File f = lists;
if (f.isFile()) {
FileInputStream fis = new FileInputStream(f);
String content = "";
String sourceBasePath = sourceBaseDir.getCanonicalPath();
String fPath = f.getCanonicalPath();
String drPath = destDir
+ fPath.substring(fPath.indexOf(sourceBasePath)
+ sourceBasePath.length());
FileOutputStream fos = new FileOutputStream(drPath);
byte[] b = new byte[2048];
while (fis.read(b) != -1) {
if (content != null)
content += new String(b);
else
content = new String(b);
b = new byte[2048];
}
content = content.trim();
fis.close();
fos.write(content.getBytes());
fos.flush();
fos.close();
} else {
// 先新建目录
new File(destDir + File.separator + f.getName()).mkdir();
copyFile(destDir, sourceBaseDir, f); // 递归调用
}
}
}
/**
* 将sourceDir目录的文件全部copy到destDir中去
*/
public void deleteSourceBaseDir(File curFile) throws Exception {
File[] lists = curFile.listFiles();
File parentFile = null;
for (int i = 0; i < lists.length; i++) {
File f = lists;
if (f.isFile()) {
f.delete();
// 若它的父目录没有文件了，说明已经删完，应该删除父目录
parentFile = f.getParentFile();
if (parentFile.list().length == 0)
parentFile.delete();
} else {
deleteSourceBaseDir(f); // 递归调用
}
}
}
public static void main(String[] args) {
ZipCompress t = new ZipCompress();
// 这里是调用压缩的代码
// t.zip("d:\\me.7z", "d:\\test.jar");
// 这里是调用解压缩的代码
t.unZip("d:\\me.rar", "d:\\my");
}
}