springboot process the file into a zip file

preamble

In the work we often appear to have more than one file, in order to save resources will be more than one file together for compression; in order to allow you to further understand my first springboot processing methods are summarized below, there is less than please criticize and correct!

I. Documentation preparation:

https:///crmebimage/public/product/2024/11/12/
https:///crmebimage/public/product/2024/11/13/
https:///crmebimage/public/product/2024/11/13/

II. Processing steps:

1. Create a springboot web project This step is omitted here .....

2. Required methods and class writing

(1) Business Methods-TestService

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

(2) Business method implementation class-TestServiceImpl

@Service
@Slf4j
public class TestServiceImpl implements TestService {

    @Override
    public void compressFiles(List<String> fileUrls, HttpServletResponse response) {
        try (ZipOutputStream zipOut = new ZipOutputStream(())) {
            for (String fileUrl : fileUrls) {
                // 1. Download the file from the network and write it to ZIP.
                try {
                    URL url = new URL(fileUrl);
                    HttpURLConnection connection = (HttpURLConnection) ();
                    ("GET");
                    ();
                    // 2. Check the response code
                    if (() != HttpURLConnection.HTTP_OK) {
                        throw new IOException("Failed to download file: " + fileUrl);
                    }
                    // 3. Extract file names from URLs
                    String pathStr = (('/') + 1);
                    // 4. Create ZIP entry
                    ZipEntry zipEntry = new ZipEntry(pathStr);
                    (zipEntry);
                    // 5. Read the input stream of the file
                    try (InputStream inputStream = new BufferedInputStream(())) {
                        byte[] buffer = new byte[1024];
                        int length;
                        while ((length = (buffer)) >= 0) {
                            (buffer, 0, length);
                        }
                    }
                    ();
                } catch (IOException e) {
                    ("Error processing file URL: " + fileUrl, e);
                    throw new RuntimeException(e);
                }
            }
　// 6. Response message setting processing
            ("application/octet-stream");
            ("Content-Disposition", "attachment;filename=");
            ();
        } catch (IOException e) {
            ("Error compressing files", e);
            throw new RuntimeException(e);
        }
    }
}

(3) Controller class writing-TestController

/**
 * @Project:
 * @Description:
 * @author: songwp
 * @Date: 2024/11/13 14:50
 **/
@RequestMapping("test")
@RestController
@Slf4j
public class TestController {

    @Autowired
    private TestService testService;

    /**
     * :: Document compression
     *
     *@param fileUrls A list of file URLs to compress.
     *fileUrls@param response Response object
*/
    @GetMapping("/fileToZip")
    public void zip(@RequestParam("fileUrls") List<String> fileUrls, HttpServletResponse response) {
        (fileUrls, response);
    }
}