apache ant进行zip解压缩操作示例分享

需要导入ant.jar包，apache网站（http://ant.apache.org/bindownload.cgi）下载即可。

import java.io.bufferedinputstream;
import java.io.bufferedoutputstream;
import java.io.file;
import java.io.fileinputstream;
import java.io.fileoutputstream;
import java.io.ioexception;
import java.util.zip.zipoutputstream;

import org.apache.tools.ant.project;
import org.apache.tools.ant.taskdefs.expand;
import org.apache.tools.zip.zipentry;

import com.xyq.io.util.closeioutil;

public class ziputil {

 private static final string encode = "utf-8";

 public static void zip(string inputfilepath, string zipfilename) {

  file inputfile = new file(inputfilepath);
  if (!inputfile.exists())
   throw new runtimeexception("原始文件不存在!!!");
  file basetarzipfile = new file(zipfilename).getparentfile();
  if (!basetarzipfile.exists() && !basetarzipfile.mkdirs())
   throw new runtimeexception("目标文件无法创建!!!");
  bufferedoutputstream bos = null;
  fileoutputstream out = null;
  zipoutputstream zout = null;
  try {
   // 创建文件输出对象out,提示:注意中文支持
   out = new fileoutputstream(new string(zipfilename.getbytes(encode)));
   bos = new bufferedoutputstream(out);
   // 將文件輸出zip输出流接起来
   zout = new zipoutputstream(bos);
   zip(zout, inputfile, inputfile.getname());
   closeioutil.closeall(zout, bos, out);

  } catch (exception e) {
   e.printstacktrace();
  }
 }

 private static void zip(zipoutputstream zout, file file, string base) {

  try {
   // 如果文件句柄是目录
   if (file.isdirectory()) {
    // 获取目录下的文件
    file[] listfiles = file.listfiles();
    // 建立zip条目
    zout.putnextentry(new zipentry(base + "/"));
    base = (base.length() == 0 ? "" : base + "/");
    if (listfiles != null && listfiles.length > 0)
     // 遍历目录下文件
     for (file f : listfiles)
      // 递归进入本方法
      zip(zout, f, base + f.getname());
   }
   // 如果文件句柄是文件
   else {
    if (base == "") {
     base = file.getname();
    }
    // 填入文件句柄
    zout.putnextentry(new zipentry(base));
    // 开始压缩
    // 从文件入流读,写入zip 出流
    writefile(zout, file);
   }

  } catch (exception e) {
   e.printstacktrace();
  }
 }

 private static void writefile(zipoutputstream zout, file file)
   throws ioexception {

  fileinputstream in = null;
  bufferedinputstream bis = null;
  in = new fileinputstream(file);
  bis = new bufferedinputstream(in);
  int len = 0;
  byte[] buff = new byte[2048];
  while ((len = bis.read(buff)) != -1)
   zout.write(buff, 0, len);
  zout.flush();
  closeioutil.closeall(bis, in);
 }

 /****
  * 解压
  *
  * @param zippath
  *            zip文件路径
  * @param destinationpath
  *            解压的目的地点
  * @param ecode
  *            文件名的编码字符集
  */
 public static void unzip(string zippath, string destinationpath) {

  file zipfile = new file(zippath);
  if (!zipfile.exists())
   throw new runtimeexception("zip file " + zippath
     + " does not exist.");

  project proj = new project();
  expand expand = new expand();
  expand.setproject(proj);
  expand.settasktype("unzip");
  expand.settaskname("unzip");
  expand.setsrc(zipfile);
  expand.setdest(new file(destinationpath));
  expand.setencoding(encode);
  expand.execute();
  system.out.println("unzip done!!!");
 }

 public static void main(string[] args) {

  string dir = new string("f:\\我的备份\\文档\\myeclipse+9.0正式版破解与激活(亲测可用)");
  dir = new string("f:/111.jpg");
  zip(dir, "f:/bzbxb/zipant.zip");
  unzip("f:/bzbxb/zipant.zip", "f:/xx/xx/");
 }
}