為了方便廣大的程式設計師朋友,下面講一講如何在java中實現對zip和rar檔案的解壓,一起和小編來看看吧!
一、解壓rar檔案。
由於WinRAR 是共享軟體,並不是開源的,所以解壓rar檔案的前提是系統已經安裝了winrar,比如本人的安裝路徑是:
C:Program FilesWinRAR
然後運用ess 的.相關知識來執行系統命令列來實現解壓的。
winrar 命令列相關引數自己可以搜尋下的網上資料很多
具體程式碼:
Java程式碼
**
* 解壓rar檔案(需要系統安裝Winrar 軟體)
* @author Michael sun
*/
public class UnRarFile {
/**
* 解壓rar檔案
*
* @param targetPath
* @param absolutePath
*/
public void unRarFile(String targetPath, String absolutePath) {
try {
// 系統安裝winrar的路徑
String cmd = "C:Program FilesWinRAR";
String unrarCmd = cmd + " x -r -p- -o+ " + absolutePath + " "
+ targetPath;
Runtime rt = untime();
Process pre = (unrarCmd);
InputStreamReader isr = new InputStreamReader(nputStream());
BufferedReader bf = new BufferedReader(isr);
String line = null;
while ((line = Line()) != null) {
line = ();
if (""ls(line)) {
continue;
}
tln(line);
}
e();
} catch (Exception e) {
tln("解壓發生異常");
}
}
/**
* @param args
*/
public static void main(String[] args) {
String targetPath = "D:testunrar";
String rarFilePath = "D:test";
UnRarFile unrar = new UnRarFile();
rFile(targetPath, rarFilePath);
}
}
二、解壓zip檔案
由於zip是免費的,所以在jdk裡提供了相應的類對zip檔案的實現:
.*,詳細情況可以參考java API
Java程式碼
/**
* 解壓zip檔案
* @author Michael sun
*/
public class UnzipFile {
/**
* 解壓zip檔案
*
* @param targetPath
* @param zipFilePath
*/
public void unzipFile(String targetPath, String zipFilePath) {
try {
File zipFile = new File(zipFilePath);
InputStream is = new FileInputStream(zipFile);
ZipInputStream zis = new ZipInputStream(is);
ZipEntry entry = null;
tln("開始解壓:" + ame() + "...");
while ((entry = extEntry()) != null) {
String zipPath = ame();
try {
if (rectory()) {
File zipFolder = new File(targetPath + rator
+ zipPath);
if (!ts()) {
rs();
}
} else {
File file = new File(targetPath + rator
+ zipPath);
if (!ts()) {
File pathDir = arentFile();
rs();
teNewFile();
}
FileOutputStream fos = new FileOutputStream(file);
int bread;
while ((bread = ()) != -1) {
e(bread);
}
e();
}
tln("成功解壓:" + zipPath);
} catch (Exception e) {
tln("解壓" + zipPath + "失敗");
continue;
}
}
e();
e();
tln("解壓結束");
} catch (Exception e) {
tStackTrace();
}
}
/**
* @param args
*/
public static void main(String[] args) {
String targetPath = "D:testunzip";
String zipFile = "D:test";
UnzipFile unzip = new UnzipFile();
pFile(targetPath, zipFile);
}
}