使用 apache ant 轻松实现文件压缩/解压缩(转)

原文地址：http://blog.csdn.net/irvine007/article/details/6779492

maven配置ant包：

<dependency>
    <groupId>org.apache.ant</groupId>
    <artifactId>ant</artifactId>
    <version>1.9.7</version>
</dependency>

java代码实现：

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;

/**
 * [压缩/解压缩]文件和文件夹
 */
public class Zipper {

    public final static String encoding = "GBK";

    /**
     * 压缩文件和文件夹
     * 
     * @param srcPathname 需要被压缩的文件或文件夹路径
     * @param zipFilepath 将要生成的zip文件路径
     * @throws BuildException
     * @throws RuntimeException
     */
    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();
        
        System.out.println("compress successed.");
    }

    /**
     * 解压缩文件和文件夹
     * 
     * @param zipFilepath 需要被解压的zip文件路径
     * @param destDir 将要被解压到哪个文件夹
     * @throws BuildException
     * @throws RuntimeException
     */
    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();
        
        System.out.println("uncompress successed.");
    }

}