SpringBoot-文件压缩处理

技术分享 2周前 (11-14) 0 999+

前言

在工作我们经常会出现有多个文件，为了节省资源会将多个文件放在一起进行压缩处理；为了让大家进一步了解我先将springboot处理的方法总结如下，有不到之处敬请大家批评指正！

一、文件准备：

https://qnsc.oss-cn-beijing.aliyuncs.com/crmebimage/public/product/2024/11/12/be353210028a3da732c8ba34073fb4ca.jpeg https://qnsc.oss-cn-beijing.aliyuncs.com/crmebimage/public/product/2024/11/13/5bbf579109db2641249deab4be4340f6.jpeg https://qnsc.oss-cn-beijing.aliyuncs.com/crmebimage/public/product/2024/11/13/1808773678128361474.xlsx

二、处理步骤：

1.创建一个springboot web项目这一步在此省略.....

2.需要的方法及类的编写

（1）业务方法-TestService

public interface TestService {     void compressFiles(List<String> fileUrls, HttpServletResponse response); }

（2）业务方法实现类-TestServiceImpl

@Service @Slf4j public class TestServiceImpl implements TestService {      @Override     public void compressFiles(List<String> fileUrls, HttpServletResponse response) {         try (ZipOutputStream zipOut = new ZipOutputStream(response.getOutputStream())) {             for (String fileUrl : fileUrls) {                 // 1.从网络下载文件并写入 ZIP                 try {                     URL url = new URL(fileUrl);                     HttpURLConnection connection = (HttpURLConnection) url.openConnection();                     connection.setRequestMethod("GET");                     connection.connect();                     // 2.检查响应码                     if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) {                         throw new IOException("Failed to download file: " + fileUrl);                     }                     // 3.从 URL 中提取文件名                     String pathStr = fileUrl.substring(fileUrl.lastIndexOf('/') + 1);                     // 4.创建 ZIP 条目                     ZipEntry zipEntry = new ZipEntry(pathStr);                     zipOut.putNextEntry(zipEntry);                     // 5.读取文件的输入流                     try (InputStream inputStream = new BufferedInputStream(connection.getInputStream())) {                         byte[] buffer = new byte[1024];                         int length;                         while ((length = inputStream.read(buffer)) >= 0) {                             zipOut.write(buffer, 0, length);                         }                     }                     zipOut.closeEntry();                 } catch (IOException e) {                     log.error("Error processing file URL: " + fileUrl, e);                     throw new RuntimeException(e);                 }             }
　　　　　　　// 6.响应信息设置处理             response.setContentType("application/octet-stream");             response.setHeader("Content-Disposition", "attachment;filename=test.zip");             response.flushBuffer();         } catch (IOException e) {             log.error("Error compressing files", e);             throw new RuntimeException(e);         }     } }

（3）控制器类的编写-TestController

/**  * @Project:  * @Description:  * @author: songwp  * @Date: 2024/11/13 14:50  **/ @RequestMapping("test") @RestController @Slf4j public class TestController {      @Autowired     private TestService testService;      /**      * 文件压缩      *      * @param fileUrls 要压缩的文件 URL 列表      * @param response 响应对象      */     @GetMapping("/fileToZip")     public void zip(@RequestParam("fileUrls") List<String> fileUrls, HttpServletResponse response) {         testService.compressFiles(fileUrls, response);     } }