java对压缩文件进行加密，解压直接输入解密密码来使用

拼搏现实的明天。 2023-02-16 06:46 10阅读 0赞

<dependency>
        <groupId>net.lingala.zip4j</groupId>
        <artifactId>zip4j</artifactId>
        <version>1.3.2</version>
    </dependency>

或者下载zip4j-1.3.2.jar

以下是对文件压缩的方法，这里只是单个文件压缩，多个变通一下就可以。

package com.yggdrasill.foura.web.sysadmin.backup.service;
    
    import net.lingala.zip4j.core.ZipFile;
    import net.lingala.zip4j.exception.ZipException;
    import net.lingala.zip4j.model.ZipParameters;
    import net.lingala.zip4j.util.Zip4jConstants;
    
    import java.io.*;
    import java.util.ArrayList;
    
    public class ZipComplexCipherUtil {
        /**
         * 加密，解压可直接输入密码解压
         * 根据filepath读取文件并加密返回
         */
        public static void zipFileAndEncrypt(String filePath,String zipFileName,String password) {
            try {
                ZipParameters parameters = setParam(password);
                //压缩文件,并生成压缩文件
                ArrayList<File> filesToAdd = new ArrayList<File>();
                File file = new File(filePath);
                filesToAdd.add(file);
    
                ZipFile zipFile = new ZipFile(zipFileName);
                zipFile.addFiles(filesToAdd, parameters);//this line does works
                System.err.println("end");
            } catch (ZipException e) {
                e.printStackTrace();
            }
        }
    
        /**
         * 加密，解压可直接输入密码解压
         */
        public static void zipFileStream(InputStream is,String zipFileName,String password) {try {
                ZipParameters parameters = setParam(password);
                //addStream,多设置两个参数，缺一不可
                parameters.setFileNameInZip("yourfilename.xlsx");
                parameters.setSourceExternalStream(true);
    
                ZipFile zipFile = new ZipFile(zipFileName);
                zipFile.addStream(is, parameters);
            } catch (ZipException e) {
                e.printStackTrace();
            }
        }
        public static ZipParameters setParam(String password){
            //设置压缩文件参数
            ZipParameters parameters = new ZipParameters();
            //设置压缩方法
            parameters.setCompressionMethod(Zip4jConstants.COMP_DEFLATE);
            //设置压缩级别
            parameters.setCompressionLevel(Zip4jConstants.DEFLATE_LEVEL_NORMAL);
            //设置压缩文件是否加密
            parameters.setEncryptFiles(true);
            //设置aes加密强度
            parameters.setAesKeyStrength(Zip4jConstants.AES_STRENGTH_256);
            //设置加密方法
            parameters.setEncryptionMethod(Zip4jConstants.ENC_METHOD_AES);
            //设置密码
            parameters.setPassword(password.toCharArray());
            return parameters;
        }
    
       public static void main(String[] args) throws Exception {
           try{
               long l1 = System.currentTimeMillis();
    
    //           //加密,addFile
    //           ZipComplexCipherUtil.zipFileAndEncrypt("D:\\aaa\\test.xlsx","D:\\aaa\\test.zip","test123");
    
    
    //          加密，addStream
               InputStream in = new FileInputStream("D:\\aaa\\test.xlsx");
               ZipComplexCipherUtil.zipFileStream(in,"D:\\aaa\\test.zip","123");
    
               long l2 = System.currentTimeMillis();
               System.out.println((l2 - l1) + "毫秒.");
               System.out.println(((l2 - l1) / 1000) + "秒.");
           }catch(Exception ex){
               ex.printStackTrace();
           }
    
       }
    }