一、快速开始
Minlo说明：
- Minio是Apcche旗下的一款开源的轻量级文件服务器，基于对象存储，协议是基于Apache License v2.0，开源可用于商务。
- Minio主要用来存储非结构化的数据，类似文件，图片，照片，日志文件，各类备份文件等，按照官网描述，文件的大小从几KB到5TB。
- Minio提供了非常方便，友好的界面，并且文档也是非常丰富，具体可以参考它的文档：https://docs.min.io/cn/
- Minlo作用类似于FastDFS和阿里云的OSS进行对象存储
- 安装minlo服务器参考：https://blog.csdn.net/u010189683/article/details/108171562
1、添加依赖
<!--minio方案-->
<dependency>
<groupId>io.minio</groupId>
<artifactId>minio</artifactId>
<version>7.0.2</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
2、添加配置项
## minio配置
minio:
endpoint: http://192.168.179.131:9000/
accessKey: admin
secretKey: admin123456
3、配置项和工具类
@Data
@Configuration
@ConfigurationProperties(prefix = "minio")
public class MinioConfig {
private String endpoint;
private String accessKey;
private String secretKey;
@Bean
public MinioClient getMinioClient() throws InvalidEndpointException, InvalidPortException {
MinioClient minioClient = new MinioClient(endpoint, accessKey, secretKey);
return minioClient;
}
}
@Component
public class MinioUtil {
@Value("${minio.endpoint}")
private String endpoint;
@Value("${minio.accessKey}")
private String accessKey;
@Value("${minio.secretKey}")
private String secretKey;
private static final int DEFAULT_EXPIRY_TIME = 7 * 24 * 3600;
private static MinioClient minioClient;
@Autowired
@SneakyThrows
public MinioClient setMinioClient(){
MinioClient minioClient = new MinioClient(endpoint, accessKey, secretKey);
return minioClient;
}
/**
* 检查存储桶是否存在
*/
@SneakyThrows
public boolean bucketExists(String bucketName){
boolean flag = minioClient.bucketExists(bucketName);
return flag ? true : false;
}
/**
* 创建存储桶
*/
@SneakyThrows
public boolean makeBucket(String bucketName) {
boolean flag = bucketExists(bucketName);
if(flag) return false;
minioClient.makeBucket(bucketName);
return true;
}
/**
* 列出所有存储桶名称
*/
@SneakyThrows
public List<String> listBucketNames() {
List<Bucket> bucketList = listBuckets();
return bucketList.stream().map(item->bucket.name()).collect(Collector.toList())
}
/**
* 列出所有存储桶
*/
@SneakyThrows
public List<Bucket> listBuckets() {
return minioClient.listBuckets();
}
/**
* 删除存储桶
*/
@SneakyThrows
public boolean removeBucket(String bucketName) {
boolean flag = bucketExists(bucketName);
if(flag) return false;
Iterable<Result<Item>> myObjects = listObjects(bucketName);
for (Result<Item> result : myObjects) {
Item item = result.get();
// 有对象文件，则删除失败
if (item.size() > 0) {
return false;
}
}
// 删除存储桶，注意，只有存储桶为空时才能删除成功。
minioClient.removeBucket(bucketName);
flag = bucketExists(bucketName);
if (!flag) {
return true;
}
}
/**
* 列出存储桶中的所有对象名称
*/
@SneakyThrows
public List<String> listObjectNames(String bucketName) {
List<String> listObjectNames = new ArrayList<>();
boolean flag = bucketExists(bucketName);
if (flag) {
Iterable<Result<Item>> myObjects = listObjects(bucketName);
for (Result<Item> result : myObjects) {
Item item = result.get();
listObjectNames.add(item.objectName());
}
}
return listObjectNames;
}
/**
* 列出存储桶中的所有对象
*/
@SneakyThrows
public Iterable<Result<Item>> listObjects(String bucketName) {
boolean flag = bucketExists(bucketName);
return flag?minioClient.listObjects(bucketName):null;
}
/**
* 通过文件上传到对象
*/
@SneakyThrows
public boolean putObject(String bucketName, String objectName, String fileName){
boolean flag = bucketExists(bucketName);
if (flag) {
minioClient.putObject(bucketName, objectName, fileName, null);
ObjectStat statObject = statObject(bucketName, objectName);
if (statObject != null && statObject.length() > 0) {
return true;
}
}
return false;
}
/**
* 通过InputStream上传对象
*/
@SneakyThrows
public boolean putObject(String bucketName, String objectName, InputStream stream) {
boolean flag = bucketExists(bucketName);
if (flag) {
minioClient.putObject(bucketName, objectName, stream, new PutObjectOptions(stream.available(), -1));
ObjectStat statObject = statObject(bucketName, objectName);
if (statObject != null && statObject.length() > 0) {
return true;
}
}
return false;
}
/**
* 以流的形式获取一个文件对象
*/
@SneakyThrows
public InputStream getObject(String bucketName, String objectName){
boolean flag = bucketExists(bucketName);
if (flag) {
ObjectStat statObject = statObject(bucketName, objectName);
if (statObject != null && statObject.length() > 0) {
InputStream stream = minioClient.getObject(bucketName, objectName);
return stream;
}
}
return null;
}
/**
* 以流的形式获取一个文件对象（断点下载）
*/
@SneakyThrows
public InputStream getObject(String bucketName, String objectName, long offset, Long length){
boolean flag = bucketExists(bucketName);
if (flag) {
ObjectStat statObject = statObject(bucketName, objectName);
if (statObject != null && statObject.length() > 0) {
InputStream stream = minioClient.getObject(bucketName, objectName, offset, length);
return stream;
}
}
return null;
}
/**
* 下载并将文件保存到本地
*/
@SneakyThrows
public boolean getObject(String bucketName, String objectName, String fileName) {
boolean flag = bucketExists(bucketName);
if (flag) {
ObjectStat statObject = statObject(bucketName, objectName);
if (statObject != null && statObject.length() > 0) {
minioClient.getObject(bucketName, objectName, fileName);
return true;
}
}
return false;
}
/**
* 删除一个对象
*/
@SneakyThrows
public boolean removeObject(String bucketName, String objectName) {
boolean flag = bucketExists(bucketName);
if (flag) {
minioClient.removeObject(bucketName, objectName);
return true;
}
return false;
}
/**
* 删除指定桶的多个文件对象,返回删除错误的对象列表，全部删除成功，返回空列表
*/
@SneakyThrows
public List<String> removeObject(String bucketName, List<String> objectNames){
List<String> deleteErrorNames = new ArrayList<>();
boolean flag = bucketExists(bucketName);
if (flag) {
Iterable<Result<DeleteError>> results = minioClient.removeObjects(bucketName, objectNames);
for (Result<DeleteError> result : results) {
DeleteError error = result.get();
deleteErrorNames.add(error.objectName());
}
}
return deleteErrorNames;
}
/**
* 生成一个给HTTP GET请求用的presigned URL。
* 浏览器/移动端的客户端可以用这个URL进行下载，即使其所在的存储桶是私有的。这个presigned URL可以设置一个失效时间，默认值是7天。
*/
@SneakyThrows
public String presignedGetObject(String bucketName, String objectName, Integer expires) {
boolean flag = bucketExists(bucketName);
return bucketExists(bucketName) ? minioClient.presignedGetObject(bucketName, objectName, expires):null;
}
/**
* 生成一个给HTTP PUT请求用的presigned URL。
* 浏览器/移动端的客户端可以用这个URL进行上传，即使其所在的存储桶是私有的。这个presigned URL可以设置一个失效时间，默认值是7天。
*/
@SneakyThrows
public String presignedPutObject(String bucketName, String objectName, Integer expires) {
return bucketExists(bucketName) ? minioClient.presignedPutObject(bucketName, objectName, expires):null;
}
/**
* 获取对象的元数据
*/
@SneakyThrows
public ObjectStat statObject(String bucketName, String objectName){
return bucketExists(bucketName) ? minioClient.statObject(bucketName, objectName) : null;
}
/**
* 文件访问路径
*/
@SneakyThrows
public String getObjectUrl(String bucketName, String objectName) {
return bucketExists(bucketName) ? minioClient.getObjectUrl(bucketName, objectName) : "";
}
}
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文章来源：https://www.toymoban.com/news/detail-668418.html
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