JAVA 压缩文件 -- 单个 或 多个 | 文件夹 或 文件

废话不多说，直接上代码：

/** 压缩一个文件或文件夹
 * @param sourceFile 你要压缩的文件夹(整个完整路径)
 * @param zipFilePath 压缩后的文件(整个完整路径)
 * @throws Exception
 */
public static Boolean zip(String sourceFile, String zipFilePath) {
	//若目标文件已经存在，先删除
	File target = new File(zipFilePath);
	if (target.exists())
		target.delete();
	
	ZipOutputStream out = null;
	try {
		out = new ZipOutputStream(new FileOutputStream(zipFilePath));
		File srcfile = new File(sourceFile);
		zip(srcfile,out, "");
	}
	catch (Exception e) {
		e.printStackTrace();
	} finally {
		try {
			if (out != null)
				out.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	return true;
}

/** 压缩多个文件或文件夹
 * @param sourceFileList 要压缩的文件路径数组(整个完整路径)
 * @param zipFilePath 压缩后的文件(整个完整路径)
 * @throws Exception
 */
public static Boolean compress(LinkedList<String> sourceFileList,String zipFilePath){
	//若目标文件已经存在，先删除
	File target = new File(zipFilePath);
	if (target.exists())
		target.delete();
	
	ZipOutputStream out = null;
	try {
		out = new ZipOutputStream(new FileOutputStream(zipFilePath));
		
		for (String sourceFile : sourceFileList) {
			File srcfile = new File(sourceFile);
			zip(srcfile,out, "");
		}
		
	}
	catch (Exception e) {
		e.printStackTrace();
	} finally {
		try {
			if (out != null)
				out.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	return true;
	
}

//真正干活的两个方法  上面这个是包工头，下面那个是员工         -------相当于中介
private static void zip(File srcfile,ZipOutputStream out,String base) throws Exception {
	if (srcfile.isDirectory()) {
		File[] fl = srcfile.listFiles();
		base = base.length() == 0 ? srcfile.getName()+ "/" : base + "/";
		out.putNextEntry(new ZipEntry(base));
		for (int i = 0; i < fl.length; i++) {
			zip(fl[i], out, base + fl[i].getName());
		}
	} else {
		//压缩单个文件
		zipFile(srcfile,out,base);
	}
}

//压缩单个文件
private static void zipFile(File srcfile, ZipOutputStream out, String basedir) {
	if (!srcfile.exists())
		return;

	//第一步就直接压缩文件的情况  此时 basedir = 0,要加上文件名
	basedir = basedir.length() == 0 ? srcfile.getName() : basedir;
	
	byte[] buf = new byte[1024];
	FileInputStream in = null;

	try {
		int len;
		in = new FileInputStream(srcfile);
		out.putNextEntry(new ZipEntry(basedir));
		
		while ((len = in.read(buf)) > 0) {
			out.write(buf, 0, len);
			out.flush();
		}
	} catch (Exception e) {
		e.printStackTrace();
	} finally {
		try {
			if (out != null)
				out.closeEntry();          //在这里关闭每一个小文件 的  Entry，在最上面两个调用方法中 才 最终关闭  out
			if (in != null)
				in.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}