java代理使用 apache ant实现文件压缩/解压缩

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【背景】

           近日在研究web邮件下载功能,下载的邮件可以导入foxmail邮件客户端,但是批量下载邮件还需将邮件打成一个压缩包。从网上搜索通过java实现文件压缩、解压缩有很多现成的例子。

【参考代码】(需要下载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";// 压缩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);// 判断是目录还是文件if (file.isDirectory()) {fileSet.setDir(file);// ant中include/exclude规则在此都可以使用// 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();}// 解压缩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();}}

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