java压缩文件夹和文件实例

package com.cn;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

/**
* 压缩.zip文件类
* 创建者 : xxx
* 创建日期: 2018年06月29日
* */
public class ZipCompressorByAnt {
private static final int BUFFER_SIZE = 2 * 1024;

/**
* @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 boolean toZip(String[] srcDir, String outDir,boolean KeepDirStructure)

throws RuntimeException, Exception {

OutputStream out = new FileOutputStream(new File(outDir));
long start = System.currentTimeMillis();
ZipOutputStream zos = null;
try {
zos = new ZipOutputStream(out);
List<File> sourceFileList = new ArrayList<File>();
for (String dir : srcDir) {
File sourceFile = new File(dir);
sourceFileList.add(sourceFile);
}
compress(sourceFileList, zos, KeepDirStructure);
long end = System.currentTimeMillis();
System.out.println("压缩完成，耗时：" + (end - start) + " ms");
} catch (Exception e) {
throw new RuntimeException("zip error from ZipUtils", e);
} finally {
if (zos != null) {
try {
zos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}

/**
* 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()) {
zos.putNextEntry(new ZipEntry(name));
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) {
if (KeepDirStructure) {
zos.putNextEntry(new ZipEntry(name + "/"));
zos.closeEntry();
}
} else {
for (File file : listFiles) {
if (KeepDirStructure) {
compress(file, zos, name + "/" + file.getName(),
KeepDirStructure);
} else {
compress(file, zos, file.getName(), KeepDirStructure);

}

}
}
}

private static void compress(List<File> sourceFileList,
ZipOutputStream zos, boolean KeepDirStructure) throws Exception {
byte[] buf = new byte[BUFFER_SIZE];
for (File sourceFile : sourceFileList) {
String name = sourceFile.getName();
if (sourceFile.isFile()) {
zos.putNextEntry(new ZipEntry(name));
int len;
FileInputStream in = new FileInputStream(sourceFile);
while ((len = in.read(buf)) != -1) {
zos.write(buf, 0, len);
}
zos.closeEntry();
in.close();
} else {
File[] listFiles = sourceFile.listFiles();
if (listFiles == null || listFiles.length == 0) {
if (KeepDirStructure) {
zos.putNextEntry(new ZipEntry(name + "/"));
zos.closeEntry();
}
} else {
for (File file : listFiles) {
if (KeepDirStructure) {
compress(file, zos, name + "/" + file.getName(),
KeepDirStructure);
} else {
compress(file, zos, file.getName(),
KeepDirStructure);
}
}
}
}
}

}

    public static void main(String[] args) throws Exception{
    String pathFile="E:\\Files";//文件夹路径
        String mainXmlPath="E:\\1.xml";//文件路径
        String metaXmlPath="E:\\2.xml";//文件路径
        String[] srcDir = { pathFile,mainXmlPath,metaXmlPath};
        String outDir="E:\\mytest.zip";//压缩后的.zip路径
          toZip(srcDir, outDir, true);
    }

}

压缩前效果图：

压缩后效果图：

java压缩文件夹和文件实例

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