ZipUtil压缩解压缩工具类

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/MCJ_2017/article/details/80326080

都是干货，看代码

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.ArrayList;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

import org.apache.log4j.Logger;

public class ZipUtil {
    private static Logger log = Logger.getLogger(ZipUtil.class);
    private ZipUtil() {
    }

    /**
     * 压缩文件
     * @param filePath 待压缩的文件路径
     * @return 压缩后的文件
     */
    public static File zip(String filePath) {
        File target = null;
        File source = new File(filePath);
        if (source.exists()) {
            // 压缩文件名=源文件名.zip
            String zipName = source.getName() + ".zip";
            target = new File(source.getParent(), zipName);
            if (target.exists()) {
                target.delete(); // 删除旧的文件
            }
            FileOutputStream fos = null;
            ZipOutputStream zos = null;
            try {
                fos = new FileOutputStream(target);
                zos = new ZipOutputStream(new BufferedOutputStream(fos));
                // 添加对应的文件Entry
                addEntry("/", source, zos);
            } catch (IOException e) {
                log.error(e.toString());
                throw new RuntimeException(e);
            } finally {
                if(fos!=null) {
                    try {
                        fos.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
                if(zos!=null) {
                    try {
                        zos.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
        }
        return target;
    }

    /**
     * 扫描添加文件Entry
     * @param base   基路径
     * @param source 源文件
     * @param zos   Zip文件输出流
     * @throws IOException
     */
    private static void addEntry(String base, File source, ZipOutputStream zos)
            throws IOException {
        // 按目录分级，形如：/aaa/bbb.txt
        String entry = base + source.getName();
        if (source.isDirectory()) {
            for (File file : source.listFiles()) {
                // 递归列出目录下的所有文件，添加文件Entry
                addEntry(entry + "/", file, zos);
            }
        } else {
            FileInputStream fis = null;
            BufferedInputStream bis = null;
            try {
                byte[] buffer = new byte[1024 * 10];
                fis = new FileInputStream(source);
                bis = new BufferedInputStream(fis, buffer.length);
                int read = 0;
                zos.putNextEntry(new ZipEntry(entry));
                while ((read = bis.read(buffer, 0, buffer.length)) != -1) {
                    zos.write(buffer, 0, read);
                }
                zos.closeEntry();
            } finally {
                if(fis!=null) {
                    try {
                        fis.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
                if(bis!=null) {
                    try {
                        bis.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
        }
    }


    /**
     * 解压文件
     * @param filePath 压缩文件路径
     */
    public static List<String> unzip(String filePath) {
        File source = new File(filePath);
        List<String> list = new ArrayList<String>();
        if (source.exists()) {
            ZipInputStream zis = null;
            BufferedOutputStream bos = null;
            try {
                zis = new ZipInputStream(new FileInputStream(source));
                ZipEntry entry = null;
                while ((entry = zis.getNextEntry()) != null
                        && !entry.isDirectory()) {
                    File target = new File(source.getParent(), entry.getName());
                    if (!target.getParentFile().exists()) {
                        // 创建文件父目录
                        target.getParentFile().mkdirs();
                    }
                    String path = source.getParent()+File.separator+entry.getName();
                    // 写入文件
                    bos = new BufferedOutputStream(new FileOutputStream(target));
                    int read = 0;
                    byte[] buffer = new byte[1024 * 10];
                    while ((read = zis.read(buffer, 0, buffer.length)) != -1) {
                        bos.write(buffer, 0, read);
                    }
                    bos.flush();
                    list.add(path);
                }
                zis.closeEntry();
            } catch (IOException e) {
                throw new RuntimeException(e);
            } finally {
                if(zis!=null) {
                    try {
                        zis.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
                if(bos!=null) {
                    try {
                        bos.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
        }
        return list;
    }

    public static void main(String[] args) {
//        String targetPath = "E:\\jiangjie_work\\docs\\mysql-5.7.17.msi";
//        File file = ZipUtil.zip(targetPath);
//        System.out.println(file);
//        
        List<String> s = unzip("D://shuju//shuju1.zip");
        for(String str:s) {
            System.out.println(str);
            File f = new File(str);
            System.out.println(f.exists());
        }
    }
}

如果有不对的地方或者更好的实现方式，还请各位大佬指教。