分组压缩文件 （个人纪录）

package com.sim.newlook;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.zip.CRC32;
import java.util.zip.CheckedOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

import org.junit.Test;

import com.aliyun.oss.model.ListObjectsRequest;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.sim.newlook.data.domain.Team;

public class ZipFileTest {

    static final int BUFFER = 8192;

    @Test
    public void test() {

        try {
            zipFile("D:\task001", "001", "D:\test");
            
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    private static boolean deleteDir(File dir) {
        if (dir.isDirectory()) {
            String[] children = dir.list();
            for (int i=0; i<children.length; i++) {
                boolean success = deleteDir(new File(dir, children[i]));
                if (!success) {
                    return false;
                }
            }
        }
        // 目录此时为空，可以删除
        return dir.delete();
    }
    public void zipFile(String taskId, String teamId, String tempPath) throws IOException {

        Node root = getTeamNode(teamId);
        loopfile(taskId, root, tempPath);
        ZipOutputStream out = null;
        File file = new File(tempPath + File.separator + root.getName());
        try {
            FileOutputStream fileOutputStream = new FileOutputStream(new File(tempPath+File.separator+"test.zip"));
            CheckedOutputStream cos = new CheckedOutputStream(fileOutputStream,
                    new CRC32());
            out = new ZipOutputStream(cos);
            String basedir = "";
            compress(file, out, basedir);
            out.close();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
        deleteDir(file);
    }

    private void compress(File file, ZipOutputStream out, String basedir) {
        /* 判断是目录还是文件 */
        if (file.isDirectory()) {
            System.out.println("压缩：" + basedir + file.getName());
            this.compressDirectory(file, out, basedir);
        } else {
            System.out.println("压缩：" + basedir + file.getName());
            this.compressFile(file, out, basedir);
        }
    }

    private void compressDirectory(File dir, ZipOutputStream out, String basedir) {
        if (!dir.exists())
            return;

        File[] files = dir.listFiles();
        for (int i = 0; i < files.length; i++) {
            compress(files[i], out, basedir + dir.getName() + "/");
        }
    }

    private void compressFile(File file, ZipOutputStream out, String basedir) {
        if (!file.exists()) {
            return;
        }
        try {
            BufferedInputStream bis = new BufferedInputStream(
                    new FileInputStream(file));
            ZipEntry entry = new ZipEntry(basedir + file.getName());
            out.putNextEntry(entry);
            int count;
            byte data[] = new byte[BUFFER];
            while ((count = bis.read(data, 0, BUFFER)) != -1) {
                out.write(data, 0, count);
            }
            bis.close();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    private void loopfile(String taskId, Node root, String path) throws IOException {
        String folderName = root.getName();
        String prefix = root.getId();
        List<Node> nodes = root.getChilds();
        System.out.println(path + File.separator + folderName);
        File tempFile = new File(path + File.separator + folderName);
        if (!tempFile.exists()) {
            tempFile.mkdirs();
        }
        if (nodes == null) {
            List<ObjectSummary> objectSummaries = listObjects(new ListObjectsRequest(taskId).withPrefix(prefix));
            for (ObjectSummary objectSummary : objectSummaries) {
                InputStream inputStream = getObject(objectSummary.bucket, objectSummary.key);
                FileOutputStream fos = new FileOutputStream(new File(tempFile.getPath() + File.separator + objectSummary.key));
                byte[] b = new byte[BUFFER];
                while ((inputStream.read(b)) != -1) {
                    fos.write(b);
                }
                inputStream.close();
                fos.close();
            }
        } else {
            for (Node node : nodes) {
                loopfile(taskId, node, tempFile.getPath());
            }
        }
    }

    private List<ObjectSummary> listObjects(ListObjectsRequest listObjectRequest) {
        File file = new File(listObjectRequest.getBucketName());
        List<ObjectSummary> objectSummaries = new ArrayList<ZipFileTest.ObjectSummary>();
        if (file.exists()) {
            File[] files = file.listFiles();
            if (files != null) {
                for (File f : files) {
                    if (f.getName().startsWith(listObjectRequest.getPrefix())) {
                        objectSummaries.add(new ObjectSummary(listObjectRequest.getBucketName(), f.getName()));
                    }
                }
            }
        }
        return objectSummaries;
    }

    public InputStream getObject(String bucket, String key) throws FileNotFoundException {
        return new FileInputStream(new File(bucket + File.separator + key));
    }

    public Node getTeamNode(String teamId) {
        List<Team> teams = getChildTeams(teamId);
        Node root = null;
        Map<String, Node> nodeMap = new HashMap<String, Node>();
        Map<String, List<Node>> siblings = new HashMap<String, List<Node>>();
        for (Team department : teams) {
            String parentId = department.getParentTeam() == null ? null : department.getParentTeam().getId();
            Node node2Create = new Node(department.getId(), department.getName(), parentId);
            nodeMap.put(department.getId(), node2Create);
            if (node2Create.getParentid() == null) {
                root = node2Create;
            }
        }

        // Find parent for each node if any
        for (Node node : nodeMap.values()) {
            if (node.getParentid() != null) {
                node.setParent(nodeMap.get(node.getParentid()));
                if (siblings.get(node.getParentid()) == null) {
                    siblings.put(node.getParentid(), new ArrayList<Node>());
                }
                siblings.get(node.getParentid()).add(node);
            }
        }
        // Find children for each node if any
        for (Entry<String, List<Node>> entry : siblings.entrySet()) {
            nodeMap.get(entry.getKey()).setChilds(entry.getValue());
        }
        System.out.println(root);
        return root;
    }

    public List<Team> getChildTeams(String teamId) {
        List<Team> teams = new ArrayList<>();
        // create team for test
        Team team1 = new Team();
        team1.setId("001");
        team1.setName("team01");

        Team team2 = new Team();
        team2.setId("002");
        team2.setName("team02");
        team2.setParentTeam(team1);

        Team team3 = new Team();
        team3.setId("003");
        team3.setName("team03");
        team3.setParentTeam(team1);

        Team team4 = new Team();
        team4.setId("004");
        team4.setName("team04");
        team4.setParentTeam(team2);

        Team team5 = new Team();
        team5.setId("005");
        team5.setName("team05");
        team5.setParentTeam(team2);

        Team team6 = new Team();
        team6.setId("006");
        team6.setName("team06");
        team6.setParentTeam(team3);

        Team team7 = new Team();
        team7.setId("007");
        team7.setName("team07");
        team7.setParentTeam(team3);

        teams.add(team7);
        teams.add(team6);
        teams.add(team5);
        teams.add(team4);
        teams.add(team3);
        teams.add(team2);
        teams.add(team1);
        return teams;

    }

    class ObjectSummary {

        private String bucket;

        private String key;

        public ObjectSummary(String bucket, String key) {
            super();
            this.bucket = bucket;
            this.key = key;
        }

    }

    class Node {

        @JsonIgnore
        private Node parent;

        public String id;
        public String name;
        public String parentid;

        private List<Node> childs;

        public Node() {
            super();
        }

        public Node(String id, String name, String parentid) {
            super();
            this.id = id;
            this.parentid = parentid;
            this.name = name;
        }

        public Node getParent() {
            return parent;
        }

        public void setParent(Node parent) {
            this.parent = parent;
        }

        public List<Node> getChilds() {
            return childs;
        }

        public void setChilds(List<Node> childs) {
            this.childs = childs;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public String getId() {
            return id;
        }

        public void setId(String id) {
            this.id = id;
        }

        public String getParentid() {
            return parentid;
        }

        public void setParentid(String parentid) {
            this.parentid = parentid;
        }

        @Override
        public String toString() {
            return "Node {id=" + id + ", name=" + name + ", childs="
                    + childs + "}";
        }

    }
}

　　

处理后压缩文件的文件目录结构如下

team01

-team02

　　-team04

　　-team05

-team03

　　-team06

　　-team07