springboot将文件处理成压缩文件

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 {@Overridepublic 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 ZIPtry {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 {@Autowiredprivate 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