制作7Z格式可安装程序包

青旅半醒 2022-09-08 05:00 215阅读 0赞

引言：

> 现在制作自解压安装包主要有两种方式，一种是通过rar方式制作，另一种是通过7Z格式制作。因rar是收费的，所以使用7Z来制作自解压安装包。

## 具体代码如下： ##

import org.apache.commons.compress.archivers.sevenz.SevenZArchiveEntry;
    import org.apache.commons.compress.archivers.sevenz.SevenZMethod;
    import org.apache.commons.compress.archivers.sevenz.SevenZOutputFile;
    import org.apache.commons.io.FileUtils;
    import org.apache.commons.io.IOUtils;
    
    import java.io.BufferedInputStream;
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.RandomAccessFile;
    import java.nio.ByteBuffer;
    import java.nio.channels.SeekableByteChannel;
    import java.nio.file.Files;
    import java.nio.file.StandardOpenOption;
    
    /** * 制作exe. */
    public class MakeSfx { 
        /** * 主入口. * * @param args args * @throws IOException IOException */
        public static void main(final String[] args) throws IOException { 
            final MakeSfx makeSfx = new MakeSfx();
            File orgFile = null;
            //exe包所在路径
            final File directory = new File(new File("path").getAbsolutePath());
            for (File file : directory.listFiles()) { 
                //找到目标exe文件
                if (file.getName().endsWith("exe")) { 
                    orgFile = file;
                    System.out.println("对文件" + file.getAbsoluteFile() + "进行打包。");
                    break;
                }
            }
    // orgFile = new File("E:\\Test\\all\\143\\YG-RPA 4.0.1.9.1ALL(内部版本).exe");
            if (null == orgFile) { 
                System.out.println("该文件夹没有找到包含“YG-RPA”的exe文件。");
                return;
            }
            final File zipFile = makeSfx.customizeRobotGen7z(orgFile);
            makeSfx.customizeRobotGenExe(zipFile);
            makeSfx.delay();
            FileUtils.forceDelete(zipFile);
        }
    
        /** * 延时. */
        private void delay() { 
            try { 
                Thread.sleep(1000);
            } catch (InterruptedException e) { 
                e.printStackTrace();
            }
        }
    
        /** * 定制机器人，添加新增授权.exe,license压缩成7z文件. * * @param exeFile jar包 * @return 7z文件 * @throws IOException IOException */
        private File customizeRobotGen7z(final File exeFile)
                throws IOException { 
            System.out.println("开始生成7zip压缩包");
            //生成7Z包的路径
            final File compress7z = new File("path" + File.separator
                    + exeFile.getName().substring(0, exeFile.getName().lastIndexOf(".")) + ".7z");
            if (!compress7z.exists()) { 
                FileUtils.forceMkdirParent(compress7z);
                compress7z.createNewFile();
            }
            final SevenZOutputFile outArchive = new SevenZOutputFile(compress7z);
            //新改动，压缩方式选择COPY
            outArchive.setContentCompression(SevenZMethod.COPY);
            final SevenZArchiveEntry entryJar = new SevenZArchiveEntry();
            entryJar.setName(exeFile.getName());
            outArchive.putArchiveEntry(entryJar);
    
            final BufferedInputStream in = new BufferedInputStream(new FileInputStream(exeFile));
    
            final int bufSize = 1024;
            final byte[] buffer = new byte[bufSize];
            int len = 0;
            while (-1 != (len = in.read(buffer, 0, bufSize))) { 
                outArchive.write(buffer, 0, len);
            }
            outArchive.closeArchiveEntry();
            IOUtils.closeQuietly(outArchive);
            System.out.println("生成7zip压缩包完成。");
            return compress7z;
        }
    
        /** * 机器人7z文件制作成可自解压的exe文件(7z方案). * * @param compress7z 7z文件 * @return exe文件大小 * @throws IOException IOException */
        private long customizeRobotGenExe(final File compress7z)
                throws IOException { 
            System.out.println("开始生成exe");
            final String exeName = compress7z.getName().substring(0, compress7z.getName().lastIndexOf(".")) + "1" + ".exe";
            final File configFile = createConfig(exeName);
            InputStream is7zSD = null;
            InputStream isConfig = null;
            File robotExe = null;
            SeekableByteChannel robotExeSbc = null;
            SeekableByteChannel z7Sbc = null;
            try { 
                is7zSD = new FileInputStream(new File("path\\7zSD.sfx"));
                isConfig = new FileInputStream("config.txt");
    // isConfig = this.getClass().getResourceAsStream("/" + this.getClass().getName() + "/config.txt");
                robotExe = new File("path\\" + exeName);
                if (!robotExe.exists()) { 
                    robotExe.createNewFile();
                }
                FileUtils.writeByteArrayToFile(robotExe, IOUtils.toByteArray(is7zSD));
                FileUtils.writeByteArrayToFile(robotExe, IOUtils.toByteArray(isConfig), true);
                // 改动，考虑到jar可能比较大，不再采用FileUtils.writeByteArrayToFile方法
                robotExeSbc = Files.newByteChannel(robotExe.toPath(), StandardOpenOption.APPEND);
                z7Sbc = Files.newByteChannel(compress7z.toPath(), StandardOpenOption.READ);
                final ByteBuffer z7Bf = ByteBuffer.allocate(1024);
                while ((z7Sbc.read(z7Bf)) > 0) { 
                    z7Bf.flip();
                    robotExeSbc.write(z7Bf);
                    z7Bf.clear();
                }
            } finally { 
                IOUtils.closeQuietly(is7zSD, isConfig, z7Sbc, robotExeSbc);
            }
            delay();
            FileUtils.forceDelete(configFile);
            System.out.println("生成exe完成");
            return FileUtils.sizeOf(robotExe);
        }
    
        /** * 创建配置文件. * * @param exeName exeName * @return 配置文件 * @throws IOException IOException */
        private File createConfig(final String exeName) throws IOException { 
            final File configFile = new File("config.txt");
            if (!configFile.exists()) { 
                configFile.createNewFile();
                System.err.println(configFile.getAbsolutePath() + "已创建！");
            }
            final RandomAccessFile randomAccessFile = new RandomAccessFile(configFile, "rw");
            randomAccessFile.write((";!@Install@!UTF-8!\r\n"
                    + "Title=\"安装\"\r\n"
                    + "RunProgram=\"" + exeName + " /T:%%T\"\r\n"
                    + ";!@InstallEnd@!").getBytes("UTF-8"));
            if (randomAccessFile != null) { 
                try { 
                    randomAccessFile.close();
                } catch (IOException e2) { 
                    e2.printStackTrace();
                }
            }
            return configFile;
        }
    
    }