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			|  |  |  | package cn.afterturn.easypoi.util; | 
		
	
		
			
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			|  |  |  | import org.apache.poi.util.IOUtils; | 
		
	
		
			
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 | 
		
	
		
			
			|  |  |  | import java.io.File; | 
		
	
		
			
			|  |  |  | import java.io.FileInputStream; | 
		
	
		
			
			|  |  |  | import java.io.OutputStream; | 
		
	
		
			
			|  |  |  | import java.util.List; | 
		
	
		
			
			|  |  |  | import java.util.zip.ZipEntry; | 
		
	
		
			
			|  |  |  | import java.util.zip.ZipOutputStream; | 
		
	
		
			
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 | 
		
	
		
			
			|  |  |  | /** | 
		
	
		
			
			|  |  |  | * 方便压缩文件使用 | 
		
	
		
			
			|  |  |  | * | 
		
	
		
			
			|  |  |  | * @author jueyue on 19-10-31. | 
		
	
		
			
			|  |  |  | */ | 
		
	
		
			
			|  |  |  | public class PoiZipUtil { | 
		
	
		
			
			|  |  |  | private static final int BUFFER_SIZE = 2 * 1024; | 
		
	
		
			
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			|  |  |  | /** | 
		
	
		
			
			|  |  |  | * 压缩成ZIP 方法1 | 
		
	
		
			
			|  |  |  | * | 
		
	
		
			
			|  |  |  | * @param srcDir           压缩文件夹路径 | 
		
	
		
			
			|  |  |  | * @param out              压缩文件输出流 | 
		
	
		
			
			|  |  |  | * @param KeepDirStructure 是否保留原来的目录结构,true:保留目录结构; | 
		
	
		
			
			|  |  |  | *                         false:所有文件跑到压缩包根目录下(注意:不保留目录结构可能会出现同名文件,会压缩失败) | 
		
	
		
			
			|  |  |  | * @throws RuntimeException 压缩失败会抛出运行时异常 | 
		
	
		
			
			|  |  |  | */ | 
		
	
		
			
			|  |  |  | public static void toZip(String srcDir, OutputStream out, boolean KeepDirStructure) | 
		
	
		
			
			|  |  |  | throws RuntimeException { | 
		
	
		
			
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 | 
		
	
		
			
			|  |  |  | ZipOutputStream zos = null; | 
		
	
		
			
			|  |  |  | try { | 
		
	
		
			
			|  |  |  | zos = new ZipOutputStream(out); | 
		
	
		
			
			|  |  |  | File sourceFile = new File(srcDir); | 
		
	
		
			
			|  |  |  | compress(sourceFile, zos, sourceFile.getName(), KeepDirStructure); | 
		
	
		
			
			|  |  |  | } catch (Exception e) { | 
		
	
		
			
			|  |  |  | throw new RuntimeException("zip error from ZipUtils", e); | 
		
	
		
			
			|  |  |  | } finally { | 
		
	
		
			
			|  |  |  | IOUtils.closeQuietly(zos); | 
		
	
		
			
			|  |  |  | } | 
		
	
		
			
			|  |  |  | } | 
		
	
		
			
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 | 
		
	
		
			
			|  |  |  | /** | 
		
	
		
			
			|  |  |  | * 压缩成ZIP 方法2 | 
		
	
		
			
			|  |  |  | * | 
		
	
		
			
			|  |  |  | * @param srcFiles 需要压缩的文件列表 | 
		
	
		
			
			|  |  |  | * @param out      压缩文件输出流 | 
		
	
		
			
			|  |  |  | * @throws RuntimeException 压缩失败会抛出运行时异常 | 
		
	
		
			
			|  |  |  | */ | 
		
	
		
			
			|  |  |  | public static void toZip(List<File> srcFiles, OutputStream out) throws RuntimeException { | 
		
	
		
			
			|  |  |  | long            start = System.currentTimeMillis(); | 
		
	
		
			
			|  |  |  | ZipOutputStream zos   = null; | 
		
	
		
			
			|  |  |  | try { | 
		
	
		
			
			|  |  |  | zos = new ZipOutputStream(out); | 
		
	
		
			
			|  |  |  | for (File srcFile : srcFiles) { | 
		
	
		
			
			|  |  |  | byte[] buf = new byte[BUFFER_SIZE]; | 
		
	
		
			
			|  |  |  | zos.putNextEntry(new ZipEntry(srcFile.getName())); | 
		
	
		
			
			|  |  |  | int             len; | 
		
	
		
			
			|  |  |  | FileInputStream in = new FileInputStream(srcFile); | 
		
	
		
			
			|  |  |  | while ((len = in.read(buf)) != -1) { | 
		
	
		
			
			|  |  |  | zos.write(buf, 0, len); | 
		
	
		
			
			|  |  |  | } | 
		
	
		
			
			|  |  |  | zos.closeEntry(); | 
		
	
		
			
			|  |  |  | in.close(); | 
		
	
		
			
			|  |  |  | } | 
		
	
		
			
			|  |  |  | long end = System.currentTimeMillis(); | 
		
	
		
			
			|  |  |  | } catch (Exception e) { | 
		
	
		
			
			|  |  |  | throw new RuntimeException("zip error from ZipUtils", e); | 
		
	
		
			
			|  |  |  | } finally { | 
		
	
		
			
			|  |  |  | IOUtils.closeQuietly(zos); | 
		
	
		
			
			|  |  |  | } | 
		
	
		
			
			|  |  |  | } | 
		
	
		
			
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 | 
		
	
		
			
			|  |  |  | /** | 
		
	
		
			
			|  |  |  | * 递归压缩方法 | 
		
	
		
			
			|  |  |  | * | 
		
	
		
			
			|  |  |  | * @param sourceFile       源文件 | 
		
	
		
			
			|  |  |  | * @param zos              zip输出流 | 
		
	
		
			
			|  |  |  | * @param name             压缩后的名称 | 
		
	
		
			
			|  |  |  | * @param KeepDirStructure 是否保留原来的目录结构,true:保留目录结构; | 
		
	
		
			
			|  |  |  | *                         false:所有文件跑到压缩包根目录下(注意:不保留目录结构可能会出现同名文件,会压缩失败) | 
		
	
		
			
			|  |  |  | * @throws Exception | 
		
	
		
			
			|  |  |  | */ | 
		
	
		
			
			|  |  |  | private static void compress(File sourceFile, ZipOutputStream zos, String name, | 
		
	
		
			
			|  |  |  | boolean KeepDirStructure) throws Exception { | 
		
	
		
			
			|  |  |  | byte[] buf = new byte[BUFFER_SIZE]; | 
		
	
		
			
			|  |  |  | if (sourceFile.isFile()) { | 
		
	
		
			
			|  |  |  | // 向zip输出流中添加一个zip实体,构造器中name为zip实体的文件的名字 | 
		
	
		
			
			|  |  |  | zos.putNextEntry(new ZipEntry(name)); | 
		
	
		
			
			|  |  |  | // copy文件到zip输出流中 | 
		
	
		
			
			|  |  |  | int             len; | 
		
	
		
			
			|  |  |  | FileInputStream in = new FileInputStream(sourceFile); | 
		
	
		
			
			|  |  |  | while ((len = in.read(buf)) != -1) { | 
		
	
		
			
			|  |  |  | zos.write(buf, 0, len); | 
		
	
		
			
			|  |  |  | } | 
		
	
		
			
			|  |  |  | // Complete the entry | 
		
	
		
			
			|  |  |  | zos.closeEntry(); | 
		
	
		
			
			|  |  |  | in.close(); | 
		
	
		
			
			|  |  |  | } else { | 
		
	
		
			
			|  |  |  | File[] listFiles = sourceFile.listFiles(); | 
		
	
		
			
			|  |  |  | if (listFiles == null || listFiles.length == 0) { | 
		
	
		
			
			|  |  |  | // 需要保留原来的文件结构时,需要对空文件夹进行处理 | 
		
	
		
			
			|  |  |  | if (KeepDirStructure) { | 
		
	
		
			
			|  |  |  | // 空文件夹的处理 | 
		
	
		
			
			|  |  |  | zos.putNextEntry(new ZipEntry(name + "/")); | 
		
	
		
			
			|  |  |  | // 没有文件,不需要文件的copy | 
		
	
		
			
			|  |  |  | zos.closeEntry(); | 
		
	
		
			
			|  |  |  | } | 
		
	
		
			
			|  |  |  | } else { | 
		
	
		
			
			|  |  |  | for (File file : listFiles) { | 
		
	
		
			
			|  |  |  | // 判断是否需要保留原来的文件结构 | 
		
	
		
			
			|  |  |  | if (KeepDirStructure) { | 
		
	
		
			
			|  |  |  | // 注意:file.getName()前面需要带上父文件夹的名字加一斜杠, | 
		
	
		
			
			|  |  |  | // 不然最后压缩包中就不能保留原来的文件结构,即:所有文件都跑到压缩包根目录下了 | 
		
	
		
			
			|  |  |  | compress(file, zos, name + "/" + file.getName(), KeepDirStructure); | 
		
	
		
			
			|  |  |  | } else { | 
		
	
		
			
			|  |  |  | compress(file, zos, file.getName(), KeepDirStructure); | 
		
	
		
			
			|  |  |  | } | 
		
	
		
			
			|  |  |  | } | 
		
	
		
			
			|  |  |  | } | 
		
	
		
			
			|  |  |  | } | 
		
	
		
			
			|  |  |  | } | 
		
	
		
			
			|  |  |  | } |