Zip4j使用

引用：https://www.jianshu.com/p/89bf65317e6b

ZIp4j ：支持加密，解密压缩，支持文件的添加，删除，等

<dependency>
    <groupId>net.lingala.zip4jgroupId>
    <artifactId>zip4jartifactId>
    <version>1.3.2version>
dependency>
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public interface Zip4jConstants {
    // 默认
    Integer COMP_DEFLATE = 8;
    // 仅打包，不压缩
    Integer COMP_STORE = 0;
    // 加密压缩
    Integer COMP_AES_ENC =99;


    Integer DEFLATE_LEVEL_FASTEST =1;   // (速度最快，压缩比最小)

    Integer DEFLATE_LEVEL_FAST = 3; //(速度快，压缩比小)
    Integer  DEFLATE_LEVEL_NORMAL = 5; //(一般)
    Integer DEFLATE_LEVEL_MAXIMUM = 7;
    Integer  DEFLATE_LEVEL_ULTRA = 9;



    static final int ENC_NO_ENCRYPTION = -1;//（默认,没有加密方法，如果采用此字段，会报错”没有提供加密算法”）
    static final int ENC_METHOD_STANDARD = 0;
    static final int ENC_METHOD_AES = 99;

    static final int AES_STRENGTH_128 = 0x01;
    static final int AES_STRENGTH_192 = 0x02;
    static final int AES_STRENGTH_256 = 0x03;
}
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package com.cj.zip;

import net.lingala.zip4j.core.ZipFile;
import net.lingala.zip4j.exception.ZipException;
import net.lingala.zip4j.model.ZipParameters;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.util.ArrayList;

public class Demo {
    
    public static void zipFile() throws ZipException {
        // 生成的压缩文件
        ZipFile zipFile = new ZipFile("F:\\images.zip");
        ZipParameters parameters = new ZipParameters();
        // 压缩方式
        parameters.setCompressionMethod(Zip4jConstants.COMP_DEFLATE);
        // 压缩级别
        parameters.setCompressionLevel(Zip4jConstants.DEFLATE_LEVEL_NORMAL);

        // 要打包的文件夹
        File currentFile = new File("F:\\images");

        File[] files = currentFile.listFiles();
        for (File f : files) {
            if (f.isDirectory()){
                zipFile.addFolder(f.getPath(),parameters);
            }else{
                zipFile.addFile(f,parameters);
            }
        }
    }


    public static void unzip() throws ZipException {
        ZipFile zipFile = new ZipFile("F:\\images.zip");
        zipFile.extractAll("f:\\aa");

    }



    public static void addFile() throws ZipException {
        ZipFile zipFile = new ZipFile("F:\\images.zip");
        ArrayList<Object> addFiles = new ArrayList<>();
        addFiles.add(new File("F:\\1.txt"));
        addFiles.add(new File("F:\\1.pdf"));

        ZipParameters parameters = new ZipParameters();
        parameters.setCompressionMethod(Zip4jConstants.COMP_DEFLATE);
        parameters.setCompressionLevel(Zip4jConstants.DEFLATE_LEVEL_NORMAL);
        // 目标路径
        parameters.setRootFolderInZip("cc/");
//        zipFile.addFiles(addFiles,parameters);
        zipFile.addFile(new File("F:\\1.txt"),parameters);
        zipFile.addFile(new File("F:\\1.pdf"),parameters);
    }

    public static  void addFile02() throws ZipException {
        ZipFile zipFile = new ZipFile("f://images.zip");
        ZipParameters parameters = new ZipParameters();
        parameters.setCompressionMethod(8);
        // 设置名字
        parameters.setFileNameInZip("cc/hehe.txt");
        parameters.setSourceExternalStream(true);

        ByteArrayInputStream inputStream = new ByteArrayInputStream(new String("silly b").getBytes());
        zipFile.addStream(inputStream,parameters);
    }


    public static void deleteFile() throws ZipException {
        ZipFile zipFile = new ZipFile("f://images.zip");
        // 删除压缩文件中文件
        zipFile.removeFile("cc/hehe.txt");
    }

    private static  void zipFileWithPwd() throws ZipException {
        ZipFile zipFile = new ZipFile("f://images1.zip");
        ZipParameters parameters = new ZipParameters();
        parameters.setCompressionMethod(Zip4jConstants.COMP_DEFLATE);
        parameters.setCompressionLevel(Zip4jConstants.DEFLATE_LEVEL_NORMAL);
        // 设置加密
        parameters.setEncryptFiles(true);
        // 加密方式
        parameters.setEncryptionMethod(Zip4jConstants.ENC_METHOD_AES);
        parameters.setAesKeyStrength(Zip4jConstants.AES_STRENGTH_256);
        parameters.setPassword("123");

        File currentFile = new File("f://images");
        File[] files = currentFile.listFiles();
        for (File f : files) {
            if (f.isDirectory()){
                zipFile.addFolder(f.getPath(),parameters);
            }else{
                zipFile.addFile(f,parameters);
            }
        }
    }

    public static void main(String[] args) throws ZipException {
//        zipFile();
//        unzip();
//        addFile02();
//        addFile();
//        deleteFile();
        zipFileWithPwd();
    }


}

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