java 如何将多个文件打包成一个zip ?

[sking_2008]

我可以得到需要下载的文件路径
String[] path;//这个已知
就是如何将这些文件打包成一个zip供下载?
希望高手们写下详细代码.``

[老紫竹]

整个目录的压缩成一个zip文件

其实就是一个不断的压缩的过程！

[yanhan0615]

网上有现成的，直接递归即可

[scueczhang]

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipOutputStream;

public class DirectoryZip {
public static void jar(String inputFileName, String outputFileName) throws Exception {
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(outputFileName));
out.setEncoding("GBK"); // ###### 这句话是关键，指定输出的编码方式
File f = new File(inputFileName);
jar(out, f, "");
out.close();
}

private static void jar(ZipOutputStream out, File f, String base) throws Exception {
if (f.isDirectory()) {
File[] fl = f.listFiles();
base = base.length() == 0 ? "" : base + "/";
out.putNextEntry(new ZipEntry(base));
for (int i = 0; i < fl.length; i++) {
jar(out, fl[i], base + fl[i].getName());
}
} else {
out.putNextEntry(new ZipEntry(base));
FileInputStream in = new FileInputStream(f);
byte[] buffer = new byte[1024];
int n = in.read(buffer);
while (n != -1) {
out.write(buffer, 0, n);
n = in.read(buffer);
}
in.close();
}
}

public static void main(String[] args) {
try {
jar("D:\\temp\\1", "d://mytest.zip");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

[晨星]

如果可以的话，调用ant任务更简单。嘿嘿。

[neohope]

打成jar就不行吗？将源代码一起打进去

[hbwhwang]

代码运行需要 ant.jar

import java.io.*;
import java.util.Enumeration;

import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;
import org.apache.tools.zip.ZipOutputStream;

public class ZipUtil {

	/**
	 * 压缩。
	 * 
	 * @param src
	 *            源文件或者目录
	 * @param dest
	 *            压缩文件路径
	 * @throws IOException
	 */
	public static void zip(String src, String dest) throws IOException {
		ZipOutputStream out = null;
		try {
			File outFile = new File(dest);
			out = new ZipOutputStream(outFile);
			File fileOrDirectory = new File(src);

			if (fileOrDirectory.isFile()) {
				zipFileOrDirectory(out, fileOrDirectory, "");
			} else {
				File[] entries = fileOrDirectory.listFiles();
				for (int i = 0; i < entries.length; i++) {
					// 递归压缩，更新curPaths
					zipFileOrDirectory(out, entries[i], "");
				}
			}

		} catch (IOException ex) {
			ex.printStackTrace();
		} finally {
			if (out != null) {
				try {
					out.close();
				} catch (IOException ex) {
				}
			}
		}
	}

	/**
	 * 递归压缩文件或目录
	 * 
	 * @param out
	 *            压缩输出流对象
	 * @param fileOrDirectory
	 *            要压缩的文件或目录对象
	 * @param curPath
	 *            当前压缩条目的路径，用于指定条目名称的前缀
	 * @throws IOException
	 */
	private static void zipFileOrDirectory(ZipOutputStream out,
			File fileOrDirectory, String curPath) throws IOException {
		FileInputStream in = null;
		try {
			if (!fileOrDirectory.isDirectory()) {
				// 压缩文件
				byte[] buffer = new byte[4096];
				int bytes_read;
				in = new FileInputStream(fileOrDirectory);

				ZipEntry entry = new ZipEntry(curPath
						+ fileOrDirectory.getName());
				out.putNextEntry(entry);

				while ((bytes_read = in.read(buffer)) != -1) {
					out.write(buffer, 0, bytes_read);
				}
				out.closeEntry();
			} else {
				// 压缩目录
				File[] entries = fileOrDirectory.listFiles();
				for (int i = 0; i < entries.length; i++) {
					// 递归压缩，更新curPaths
					zipFileOrDirectory(out, entries[i], curPath
							+ fileOrDirectory.getName() + "/");
				}
			}
		} catch (IOException ex) {
			ex.printStackTrace();
			throw ex;
		} finally {
			if (in != null) {
				try {
					in.close();
				} catch (IOException ex) {
				}
			}
		}
	}

	/**
	 * 解压缩。
	 * 
	 * @param zipFileName
	 *            源文件
	 * @param outputDirectory
	 *            解压缩后文件存放的目录
	 * @throws IOException
	 */
	public static void unzip(String zipFileName, String outputDirectory)
			throws IOException {

		ZipFile zipFile = null;

		try {
			zipFile = new ZipFile(zipFileName);
			Enumeration e = zipFile.getEntries();

			ZipEntry zipEntry = null;

			File dest = new File(outputDirectory);
			dest.mkdirs();

			while (e.hasMoreElements()) {
				zipEntry = (ZipEntry) e.nextElement();

				String entryName = zipEntry.getName();

				InputStream in = null;
				FileOutputStream out = null;

				try {
					if (zipEntry.isDirectory()) {
						String name = zipEntry.getName();
						name = name.substring(0, name.length() - 1);

						File f = new File(outputDirectory + File.separator
								+ name);
						f.mkdirs();
					} else {
						int index = entryName.lastIndexOf("\\");
						if (index != -1) {
							File df = new File(outputDirectory + File.separator
									+ entryName.substring(0, index));
							df.mkdirs();
						}
						index = entryName.lastIndexOf("/");
						if (index != -1) {
							File df = new File(outputDirectory + File.separator
									+ entryName.substring(0, index));
							df.mkdirs();
						}

						File f = new File(outputDirectory + File.separator
								+ zipEntry.getName());
						// f.createNewFile();
						in = zipFile.getInputStream(zipEntry);
						out = new FileOutputStream(f);

						int c;
						byte[] by = new byte[1024];

						while ((c = in.read(by)) != -1) {
							out.write(by, 0, c);
						}
						out.flush();
					}
				} catch (IOException ex) {
					ex.printStackTrace();
					throw new IOException("解压失败：" + ex.toString());
				} finally {
					if (in != null) {
						try {
							in.close();
						} catch (IOException ex) {
						}
					}
					if (out != null) {
						try {
							out.close();
						} catch (IOException ex) {
						}
					}
				}
			}

		} catch (IOException ex) {
			ex.printStackTrace();
			throw new IOException("解压失败：" + ex.toString());
		} finally {
			if (zipFile != null) {
				try {
					zipFile.close();
				} catch (IOException ex) {
				}
			}
		}

	}

	public static void main(String[] args) {
		try {
			 ZipUtil.zip("C:\\0115080120081024","d:\\0115080120081027.zip");
			//ZipUtil.unzip("D:\\a\\010108012008-8-25.zip", "d:\\a\\tmp");
		} catch (Exception e) {
			e.printStackTrace();
		}

	}

}

[ttmotor2008]

路过,学习.

[Monkey_D_Luffy]

看起来已经解决了

[pathuang68]

飘过，学习

[lcb521]

关注！

[薪水]

帮顶

[cuij7718]

真是重赏之下必有勇夫,还真有给写代码的,给一个思路就可以了

[网络科技]

要用第三方包,学习了

[老张-AI]

关注

[cuij7718]

不管如何做,如果用JDK 的zip压缩,中文问题早晚会碰到,如果碰到了,到apache上面下在他的zip包用就可以了,这个不是单独的一个zip,是和别的打包在一起的,哪一个忘了
找到以后删除多余的,最终也就70kb左右,支持zip,tar,gzip

[caironghuicxz]

我看已经解决了这个问题了啊。

[Looking_Glass]

日！这个问题我已经发过N次拉！

[myhonor]

貌似JDK自带的那个ZIP有些问题，网上都建议用APACHE的

[yinliao]

要用到了。。。。学习一下。。

[nchzh302]

学习下