【背景】
近日在研究Web郵件下載功能,下載的郵件可以導入foxmail郵件客戶端,但是批量下載郵件還需將郵件打成一個壓縮包。從網上搜索通過Java實現文件壓縮、解壓縮有很多現成的例子。
【參考代碼】(需要下載apache ant.jar包)
import java.io.File;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.taskdefs.Expand;
import org.apache.tools.ant.taskdefs.Zip;
import org.apache.tools.ant.types.FileSet;
public class Zipper {
public final static String encoding = "GBK";
// 壓縮
public static void zip(String srcPathname, String zipFilepath)
throws BuildException, RuntimeException {
File file = new File(srcPathname);
if (!file.exists())
throw new RuntimeException("source file or directory "
+ srcPathname + " does not exist.");
Project proj = new Project();
FileSet fileSet = new FileSet();
fileSet.setProject(proj);
// 判斷是目錄還是文件
if (file.isDirectory()) {
fileSet.setDir(file);
// ant中include/exclude規則在此都可以使用
// 比如:
// fileSet.setExcludes("**/*.txt");
// fileSet.setIncludes("**/*.xls");
} else {
fileSet.setFile(file);
}
Zip zip = new Zip();
zip.setProject(proj);
zip.setDestFile(new File(zipFilepath));
zip.addFileset(fileSet);
zip.setEncoding(encoding);
zip.execute();
}
// 解壓縮
public static void unzip(String zipFilepath, String destDir)
throws BuildException, RuntimeException {
if (!new File(zipFilepath).exists())
throw new RuntimeException("zip file " + zipFilepath
+ " does not exist.");
Project proj = new Project();
Expand expand = new Expand();
expand.setProject(proj);
expand.setTaskType("unzip");
expand.setTaskName("unzip");
expand.setEncoding(encoding);
expand.setSrc(new File(zipFilepath));
expand.setDest(new File(destDir));
expand.execute();
}
}
Apache Ant 的詳細介紹:請點這裡
Apache Ant 的下載地址:請點這裡
如何在 Linux 服務器上安裝 apache ant? http://www.linuxidc.com/Linux/2012-06/63014.htm
Apache Ant 的詳細介紹下載見 http://www.linuxidc.com/Linux/2013-08/88313.htm
Android 編譯工具 Ant http://www.linuxidc.com/Linux/2013-05/84490.htm