基于Java写minio客户端实现上传下载文件

基于Java写minio客户端实现上传下载文件

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

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