SpringBoot-文件压缩处理
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.jpeghttps://qnsc.oss-cn-beijing.aliyuncs.com/crmebimage/public/product/2024/11/13/5bbf579109db2641249deab4be4340f6.jpeghttps://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@Slf4jpublic 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]; 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@Slf4jpublic 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); }}
三、方法调用展示
（1）存放到桌面
（2）解压response.zip文件
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