springboot Java 7z 高效率压缩文件(org.apache.commons.compress.archivers.sevenz)
看一下战果
直接上代码
<--maven配置-->
<dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-compress</artifactId> <version>1.12</version> </dependency> <dependency> <groupId>org.tukaani</groupId> <artifactId>xz</artifactId> <version>1.5</version> </dependency>
public class CompressUtil { // 测试 public static void main(String[] args) { String path = "D:\\Test\\pdf\\2020-01-08\\92b4809959d5478ba5ad5dc676444c06.pdf"; // path = "D:\\Test\\pdf\\2020-01-08\\12.txt"; String path2 = "D:\\Test\\pdf\\2020-01-08\\92b4809959d5478ba5ad5dc676444c06z.7z"; try { Compress7z(path,path2); } catch (Exception e) { e.printStackTrace(); System.out.println(e.getMessage()); } } /** * 7z文件压缩 * * @param inputFile 待压缩文件夹/文件名 * @param outputFile 生成的压缩包名字 */ public static void Compress7z(String inputFile, String outputFile) throws Exception { File input = new File(inputFile); if (!input.exists()) { throw new Exception(input.getPath() + "待压缩文件不存在"); } SevenZOutputFile out = new SevenZOutputFile(new File(outputFile)); compress(out, input, null); out.close(); } /** * @param name 压缩文件名,可以写为null保持默认 */ //递归压缩 public static void compress(SevenZOutputFile out, File input, String name) throws IOException { if (name == null) { name = input.getName(); } SevenZArchiveEntry entry = null; //如果路径为目录(文件夹) if (input.isDirectory()) { //取出文件夹中的文件(或子文件夹) File[] flist = input.listFiles(); if (flist.length == 0)//如果文件夹为空,则只需在目的地.7z文件中写入一个目录进入 { entry = out.createArchiveEntry(input,name + "/"); out.putArchiveEntry(entry); } else//如果文件夹不为空,则递归调用compress,文件夹中的每一个文件(或文件夹)进行压缩 { for (int i = 0; i < flist.length; i++) { compress(out, flist[i], name + "/" + flist[i].getName()); } } } else//如果不是目录(文件夹),即为文件,则先写入目录进入点,之后将文件写入7z文件中 { FileInputStream fos = new FileInputStream(input); BufferedInputStream bis = new BufferedInputStream(fos); entry = out.createArchiveEntry(input, name); out.putArchiveEntry(entry); int len = -1; //将源文件写入到7z文件中 byte[] buf = new byte[1024]; while ((len = bis.read(buf)) != -1) { out.write(buf, 0, len); } bis.close(); fos.close(); out.closeArchiveEntry(); } } }