MinIO中上传缩略图
MinIO中上传缩略图
需求：在读取minio的图片的时候，有的图片的大小很大，导致读取的速度就会很慢，对于客户的体验并不好。
解决办法：在用户上传图片的时候上传一份缩略图，读取图片的时候只读取缩略图，这样读取的速度就会增加。
代码：
0、配置文件
minio:
endpoint: http://IP:9000 # MinIO服务地址
fileHost: http://IP:9000 # 文件地址host
bucketName: pugapp # 存储桶bucket名称
accessKey: root # 用户名
secretKey: root123456789 # 密码
imgSize: 20 # 图片大小限制，单位：m
fileSize: 20 # 文件大小限制，单位：m
1、新建MinIO配置类
@Configuration
@Data
public class MinIOConfig {
@Value("${minio.endpoint}")
private String endpoint;
@Value("${minio.fileHost}")
private String fileHost;
@Value("${minio.bucketName}")
private String bucketName;
@Value("${minio.accessKey}")
private String accessKey;
@Value("${minio.secretKey}")
private String secretKey;
@Value("${minio.imgSize}")
private Integer imgSize;
@Value("${minio.fileSize}")
private Integer fileSize;
@Bean
public MinIoUploadService creatMinioClient() {
return new MinIoUploadService(endpoint, bucketName, accessKey, secretKey, imgSize, fileSize);
}
}
2、新建MinIO工具类
/**
* MinIO工具类
*/
@Slf4j
public class MinIoUploadService {
private MinioClient minioClient;
private String endpoint;
private String bucketName;
private String accessKey;
private String secretKey;
private Integer imgSize;
private Integer fileSize;
private final String SEPARATOR = "/";
public MinIoUploadService() {
}
public MinIoUploadService(String endpoint, String bucketName, String accessKey, String secretKey, Integer imgSize, Integer fileSize) {
this.endpoint = endpoint;
this.bucketName = bucketName;
this.accessKey = accessKey;
this.secretKey = secretKey;
this.imgSize = imgSize;
this.fileSize = fileSize;
createMinioClient();
}
/**
* 创建基于Java端的MinioClient
*/
public void createMinioClient() {
try {
if (null == minioClient) {
log.info("开始创建 MinioClient...");
minioClient = MinioClient
.builder()
.endpoint(endpoint)
.credentials(accessKey, secretKey)
.build();
createBucket(bucketName);
log.info("创建完毕 MinioClient...");
}
} catch (Exception e) {
log.error("MinIO服务器异常：{}", e);
}
}
/**
* 获取上传文件前缀路径
*
* @return
*/
public String getBasisUrl() {
return endpoint + SEPARATOR + bucketName + SEPARATOR;
}
/****************************** Operate Bucket Start ******************************/
/**
* 启动SpringBoot容器的时候初始化Bucket
* 如果没有Bucket则创建
*
* @throws Exception
*/
public void createBucket(String bucketName) throws Exception {
if (!bucketExists(bucketName)) {
minioClient.makeBucket(MakeBucketArgs.builder().bucket(bucketName).build());
}
}
/**
* 判断Bucket是否存在，true：存在，false：不存在
*
* @return
* @throws Exception
*/
public boolean bucketExists(String bucketName) throws Exception {
return minioClient.bucketExists(BucketExistsArgs.builder().bucket(bucketName).build());
}
/**
* 获得Bucket的策略
*
* @param bucketName
* @return
* @throws Exception
*/
public String getBucketPolicy(String bucketName) throws Exception {
String bucketPolicy = minioClient
.getBucketPolicy(
GetBucketPolicyArgs
.builder()
.bucket(bucketName)
.build()
);
return bucketPolicy;
}
/**
* 获得所有Bucket列表
*
* @return
* @throws Exception
*/
public List<Bucket> getAllBuckets() throws Exception {
return minioClient.listBuckets();
}
/**
* 根据bucketName获取其相关信息
*
* @param bucketName
* @return
* @throws Exception
*/
public Optional<Bucket> getBucket(String bucketName) throws Exception {
return getAllBuckets().stream().filter(b -> b.name().equals(bucketName)).findFirst();
}
/**
* 根据bucketName删除Bucket，true：删除成功； false：删除失败，文件或已不存在
*
* @param bucketName
* @throws Exception
*/
public void removeBucket(String bucketName) throws Exception {
minioClient.removeBucket(RemoveBucketArgs.builder().bucket(bucketName).build());
}
/****************************** Operate Bucket End ******************************/
/****************************** Operate Files Start ******************************/
/**
* 判断文件是否存在
*
* @param bucketName 存储桶
* @param objectName 文件名
* @return
*/
public boolean isObjectExist(String bucketName, String objectName) {
boolean exist = true;
try {
minioClient.statObject(StatObjectArgs.builder().bucket(bucketName).object(objectName).build());
} catch (Exception e) {
exist = false;
}
return exist;
}
/**
* 判断文件夹是否存在
*
* @param bucketName 存储桶
* @param objectName 文件夹名称
* @return
*/
public boolean isFolderExist(String bucketName, String objectName) {
boolean exist = false;
try {
Iterable<Result<Item>> results = minioClient.listObjects(
ListObjectsArgs.builder().bucket(bucketName).prefix(objectName).recursive(false).build());
for (Result<Item> result : results) {
Item item = result.get();
if (item.isDir() && objectName.equals(item.objectName())) {
exist = true;
}
}
} catch (Exception e) {
exist = false;
}
return exist;
}
/**
* 根据文件前缀查询文件
*
* @param bucketName 存储桶
* @param prefix 前缀
* @param recursive 是否使用递归查询
* @return MinioItem 列表
* @throws Exception
*/
public List<Item> getAllObjectsByPrefix(String bucketName,
String prefix,
boolean recursive) throws Exception {
List<Item> list = new ArrayList<>();
Iterable<Result<Item>> objectsIterator = minioClient.listObjects(
ListObjectsArgs.builder().bucket(bucketName).prefix(prefix).recursive(recursive).build());
if (objectsIterator != null) {
for (Result<Item> o : objectsIterator) {
Item item = o.get();
list.add(item);
}
}
return list;
}
/**
* 获取文件流
*
* @param bucketName 存储桶
* @param objectName 文件名
* @return 二进制流
*/
public InputStream getObject(String bucketName, String objectName) throws Exception {
return minioClient.getObject(GetObjectArgs.builder().bucket(bucketName).object(objectName).build());
}
/**
* 断点下载
*
* @param bucketName 存储桶
* @param objectName 文件名称
* @param offset 起始字节的位置
* @param length 要读取的长度
* @return 二进制流
*/
public InputStream getObject(String bucketName, String objectName, long offset, long length) throws Exception {
return minioClient.getObject(
GetObjectArgs.builder()
.bucket(bucketName)
.object(objectName)
.offset(offset)
.length(length)
.build());
}
/**
* 获取路径下文件列表
*
* @param bucketName 存储桶
* @param prefix 文件名称
* @param recursive 是否递归查找，false：模拟文件夹结构查找
* @return 二进制流
*/
public Iterable<Result<Item>> listObjects(String bucketName, String prefix,
boolean recursive) {
return minioClient.listObjects(
ListObjectsArgs.builder()
.bucket(bucketName)
.prefix(prefix)
.recursive(recursive)
.build());
}
/**
* 使用MultipartFile进行文件上传
*
* @param bucketName 存储桶
* @param file 文件名
* @param objectName 对象名
* @param contentType 类型
* @return
* @throws Exception
*/
public ObjectWriteResponse uploadFile(String bucketName, MultipartFile file,
String objectName, String contentType) throws Exception {
InputStream inputStream = file.getInputStream();
return minioClient.putObject(
PutObjectArgs.builder()
.bucket(bucketName)
.object(objectName)
.contentType(contentType)
.stream(inputStream, inputStream.available(), -1)
.build());
}
/**
* 上传本地文件
*
* @param bucketName 存储桶
* @param objectName 对象名称
* @param fileName 本地文件路径
*/
public ObjectWriteResponse uploadFile(String bucketName, String objectName,
String fileName) throws Exception {
return minioClient.uploadObject(
UploadObjectArgs.builder()
.bucket(bucketName)
.object(objectName)
.filename(fileName)
.build());
}
/**
* 通过流上传文件
*
* @param bucketName 存储桶
* @param objectName 文件对象
* @param inputStream 文件流
*/
public ObjectWriteResponse uploadFile(String bucketName, String objectName, InputStream inputStream) throws Exception {
return minioClient.putObject(
PutObjectArgs.builder()
.bucket(bucketName)
.object(objectName)
.stream(inputStream, inputStream.available(), -1)
.build());
}
/**
* 创建文件夹或目录
*
* @param bucketName 存储桶
* @param objectName 目录路径
*/
public ObjectWriteResponse createDir(String bucketName, String objectName) throws Exception {
return minioClient.putObject(
PutObjectArgs.builder()
.bucket(bucketName)
.object(objectName)
.stream(new ByteArrayInputStream(new byte[]{}), 0, -1)
.build());
}
/**
* 获取文件信息, 如果抛出异常则说明文件不存在
*
* @param bucketName 存储桶
* @param objectName 文件名称
*/
public String getFileStatusInfo(String bucketName, String objectName) throws Exception {
return minioClient.statObject(
StatObjectArgs.builder()
.bucket(bucketName)
.object(objectName)
.build()).toString();
}
/**
* 拷贝文件
*
* @param bucketName 存储桶
* @param objectName 文件名
* @param srcBucketName 目标存储桶
* @param srcObjectName 目标文件名
*/
public ObjectWriteResponse copyFile(String bucketName, String objectName,
String srcBucketName, String srcObjectName) throws Exception {
return minioClient.copyObject(
CopyObjectArgs.builder()
.source(CopySource.builder().bucket(bucketName).object(objectName).build())
.bucket(srcBucketName)
.object(srcObjectName)
.build());
}
/**
* 删除文件
*
* @param bucketName 存储桶
* @param objectName 文件名称
*/
public void removeFile(String bucketName, String objectName) throws Exception {
minioClient.removeObject(
RemoveObjectArgs.builder()
.bucket(bucketName)
.object(objectName)
.build());
}
/**
* 批量删除文件
*
* @param bucketName 存储桶
* @param keys 需要删除的文件列表
* @return
*/
public void removeFiles(String bucketName, List<String> keys) {
List<DeleteObject> objects = new LinkedList<>();
keys.forEach(s -> {
objects.add(new DeleteObject(s));
try {
removeFile(bucketName, s);
} catch (Exception e) {
log.error("批量删除失败！error:{}", e);
}
});
}
/**
* 获取文件外链
*
* @param bucketName 存储桶
* @param objectName 文件名
* @param expires 过期时间 <=7 秒 （外链有效时间（单位：秒））
* @return url
* @throws Exception
*/
public String getPresignedObjectUrl(String bucketName, String objectName, Integer expires) throws Exception {
GetPresignedObjectUrlArgs args = GetPresignedObjectUrlArgs.builder().expiry(expires).bucket(bucketName).object(objectName).build();
return minioClient.getPresignedObjectUrl(args);
}
/**
* 获得文件外链
*
* @param bucketName
* @param objectName
* @return url
* @throws Exception
*/
public String getPresignedObjectUrl(String bucketName, String objectName) throws Exception {
GetPresignedObjectUrlArgs args = GetPresignedObjectUrlArgs.builder()
.bucket(bucketName)
.object(objectName)
.method(Method.GET).build();
return minioClient.getPresignedObjectUrl(args);
}
/**
* 将URLDecoder编码转成UTF8
*
* @param str
* @return
* @throws UnsupportedEncodingException
*/
public String getUtf8ByURLDecoder(String str) throws UnsupportedEncodingException {
String url = str.replaceAll("%(?![0-9a-fA-F]{2})", "%25");
return URLDecoder.decode(url, "UTF-8");
}
/****************************** Operate Files End ******************************/
}
3、引入图片压缩的依赖
<dependency>
<groupId>net.coobirdgroupId>
<artifactId>thumbnailatorartifactId>
<version>0.4.8version>
dependency>
4、开始进行缩略图的创建
@Autowired
private MinIoUploadService minIoUploadService;
@Autowired
private MinIOConfig minIOConfig;
public int inertImageSlt(ImageVo imageVo) {
// 获取上传文件的路径
MultipartFile file = imageVo.getFileUrl();
InputStream in = null;
// 设置临时文件的存储路径
// File.separator会根据系统的环境返回‘/’和 ‘\’,区分Linux 和 Winddoms
String dirPath = "." + File.separator + "tempimg" + imageVo.getBh() + File.separator;
try {
if (file != null) {
// 获取文件的输入流
in = file.getInputStream();
// 获取文件名，创建新的文件名
String fileName = null;
if(StringUtils.isNotEmpty(fileName)){
String oldname = file.getOriginalFilename();
String ext = oldname.substring(oldname.lastIndexOf("."));
fileName = UUID.randomUUID().toString() + ext;
}
// 获得桶的名字
String bucketname = minIOConfig.getBucketName();
// 创建桶
minIoUploadService.createBucket(bucketname);
// 上传文件
minIoUploadService.uploadFile(bucketname, fileName, file.getInputStream());
// 手动拼接获取MinIO存储的路径
String imgUrl = minIOConfig.getFileHost()
+ "/"
+ bucketname
+ "/"
+ fileName;
// set进VO字段中
imageVo.setZttpdz(imgUrl);
// 创建临时目录，准备去把图片压缩成压缩图片
String s = file.getOriginalFilename();
File dir = new File(dirPath);
if (!dir.exists()) {
// 判断目录是否存在
dir.mkdir();
}
File toFile = null;
if (file.equals("") || file.getSize() <= 0) {
file = null;
} else {
InputStream ins = null;
ins = file.getInputStream();
toFile = new File(dirPath + imageVo.getBh() + s);
inputStreamToFile(ins, toFile);
ins.close();
}
// 缩略图的临时存储路径
String sltImgPath = dirPath + "slt" + imageVo.getBh() + s;
// 进行图片的压缩
Thumbnails.of(toFile).size(150, 150).toFile(sltImgPath);
InputStream in1 = null;
try {
File file1 = new File(sltImgPath);
in1 = new FileInputStream(file1);
// 新建文件名
String oldname = file.getOriginalFilename();
String ext = oldname.substring(oldname.lastIndexOf("."));
fileName = UUID.randomUUID().toString() + ext;
minIoUploadService.uploadFile(bucketname, fileName, in1);
// 手动拼接获取MinIO存储的路径
String imgSltUrl = minIOConfig.getFileHost()
+ "/"
+ bucketname
+ "/"
+ fileName;
imageVo.setZttpsltdz(imgSltUrl);
} catch (Exception e) {
log.error("----- {}", e);
} finally {
if (in1 != null) {
in1.close();
}
}
}
} catch (Exception e) {
log.error("----- {}", e);
} finally {
try {
if (in != null)
in.close();
//删除临时文件
File f = new File(dirPath);
if (f.exists() && f.isDirectory()) {
File[] files = f.listFiles();
for (int i = 0; i < files.length; i++) {
files[i].delete();
}
}
if (f.listFiles().length == 0) {
f.delete();
}
} catch (IOException e) {
log.error("----- {}", e);
}
}
return jzkdztMapper.insertJzkdZt(imageVo);
}
4、引用1
// 把文件流转成文件
private static void inputStreamToFile(InputStream ins, File file) {
try {
OutputStream os = new FileOutputStream(file);
int bytesRead = 0;
byte[] buffer = new byte[8192];
while ((bytesRead = ins.read(buffer, 0, 8192)) != -1) {
os.write(buffer, 0, bytesRead);
}
os.close();
ins.close();
} catch (Exception e) {
e.printStackTrace();
}
}