这篇文章主要讲解了基于Java写minio客户端实现上传下载文件的方法，内容清晰明了，对此有兴趣的小伙伴可以学习一下，相信大家阅读完之后会有帮助。
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前言：
确保已经安装了minio的服务端
代码：
pom.xml
io.minio minio 7.0.2
application.yml
server: port:90 minio: url: http://10.69.94.140:9000 accessKey: 账号 secretKey: 密码 defaultFolder: /
MinioProperties.java
@ConfigurationProperties("minio")
@Data
public class MinioProperties {
private String url;
private String accessKey;
private String secretKey;
private String defaultFolder;
}SpringConfig.java
@Configuration
@EnableConfigurationProperties(MinioProperties.class)
@Slf4j
public class SpringConfig {
@Autowired
private MinioProperties minioProperties;
@Bean
public MinioClient minioClient() {
try {
return new MinioClient(minioProperties.getUrl(), minioProperties.getAccessKey(), minioProperties.getSecretKey());
} catch (Exception e) {
log.error(e.toString());
}
return null;
}
}ImagesController.java
@RestController
@RequestMapping("/image")
@Slf4j
@CrossOrigin(origins = "*")
public class ImageController {
@Autowired
private FileService fileService;
/*******
* Get image file, this method return an image type file which can be displayed in browser.
* @param bucketName, system, each system should belong a special bucket.
* @param category, a system may contain multiple category
* @param fileName
*/
@GetMapping(value = "/get/{bucketName}/{category}/{objectName}/{fileName}", produces = MediaType.IMAGE_JPEG_VALUE)
public byte[] get(@PathVariable("bucketName") String bucketName, @PathVariable("category") String category,
@PathVariable("objectName") String objectName,
@PathVariable("fileName") String fileName) throws Exception {
return fileService.getFile(bucketName, category, objectName);
}
@GetMapping("/download/{bucketName}/{category}/{objectName}/{fileName}")
public void download(@PathVariable("bucketName") String bucketName, @PathVariable("category") String category,
@PathVariable("objectName") String objectName,
@PathVariable("fileName") String fileName, HttpServletResponse response) throws Exception {
byte[] buffer = fileService.getFile(bucketName, category, objectName);
response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
response.setHeader("Content-disposition", "attachment; filename=\"" + fileName + "\"");
response.getOutputStream().write(buffer);
response.flushBuffer();
response.getOutputStream().close();
}
@PostMapping("/upload/{bucketName}/{category}")
public String upload(@PathVariable("bucketName") String bucketName, @PathVariable("category") String category,
@RequestParam("file") MultipartFile file) throws Exception {
String objectName = UUID.randomUUID().toString();
fileService.storeFile(bucketName, category, objectName, file.getBytes());
return String.format("image/get/%s/%s/%s/%s", bucketName, category, objectName, file.getOriginalFilename());
}
}FilesController.java
@RestController
@RequestMapping("/files")
@Slf4j
@CrossOrigin(origins = "*")
public class FilesController {
@Autowired
private FileService fileService;
@GetMapping("/download/{bucketName}/{category}/{objectName}/{fileName}")
public void download(@PathVariable("bucketName") String bucketName, @PathVariable("category") String category,
@PathVariable("objectName") String objectName, @PathVariable("fileName") String fileName, HttpServletResponse response) throws Exception {
byte[] buffer = fileService.getFile(bucketName, category, objectName);
response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
response.setHeader("Content-disposition", "attachment; filename=\"" + fileName + "\"");
response.getOutputStream().write(buffer);
response.flushBuffer();
response.getOutputStream().close();
}
@PostMapping("/upload/{bucketName}/{category}")
public String upload(@PathVariable("bucketName") String bucketName, @PathVariable("category") String category,
@RequestParam("file") MultipartFile file) throws Exception {
String objectName = UUID.randomUUID().toString();
fileService.storeFile(bucketName, category, objectName, file.getBytes());
return String.format("files/download/%s/%s/%s/%s", bucketName, category, objectName, file.getOriginalFilename());
}
}upload.html
Upload file test
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