springboot整合minio（分部署存储）

先看下效果

本篇是在上篇已经部署好minio的基础上进行的代码整合，开始吧

新建项目minio-83-client-springboot

大概的机构是这样的

pom.xml

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-all</artifactId>
    <version>5.7.10</version>
</dependency>
<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <optional>true</optional>
</dependency>
<dependency>
    <groupId>io.minio</groupId>
    <artifactId>minio</artifactId>
    <version>8.3.0</version>
</dependency>
<dependency>
    <groupId>com.squareup.okhttp3</groupId>
    <artifactId>okhttp</artifactId>
    <version>4.9.1</version>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
</dependency>


application.properties

server.port=9000

#minio配置
# 配置文件上传大小限制
spring.servlet.multipart.max-file-size=100MB
spring.servlet.multipart.max-request-size=100MB
minio.endpoint.http=http://49.235.127.115:19000
minio.endpoint.accessKey: minioadmin
minio.endpoint.secretKey: minioadmin
minio.isUse=false

-------------------------------------------------------

package com.gisinfo.minio.web.conf;

import io.minio.MinioClient;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class MinioConfig {

    @Value("${minio.endpoint.http}")
    private String endpoint;
    @Value("${minio.endpoint.accessKey}")
    private String accessKey;
    @Value("${minio.endpoint.secretKey}")
    private String secretKey;
    @Value("${minio.isUse}")
    private boolean isUse;

    /**
     * 注入minio 客户端
     * @return
     */
    @Bean
    public MinioClient minioClient(){

        return MinioClient.builder()
                .endpoint(endpoint)
                .credentials(accessKey, secretKey)
                .build();
    }
}



-------------------------------------------------------

package com.gisinfo.minio.web.util;

import cn.hutool.core.io.FileUtil;
import cn.hutool.core.util.IdUtil;
import cn.hutool.core.util.ObjectUtil;
import io.minio.*;
import io.minio.http.Method;
import io.minio.messages.Bucket;
import io.minio.messages.DeleteError;
import io.minio.messages.DeleteObject;
import io.minio.messages.Item;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.InputStream;
import java.time.LocalDate;
import java.util.*;

@Service
public class MinioUtilService {

/**
     * url分隔符
*/
public static final String URI_DELIMITER = "/";

@Autowired
private MinioClient minioClient;

    private static final int DEFAULT_EXPIRY_TIME = 7 * 24 * 3600;

/**
     * 检查存储桶是否存在
*
     * @param bucketName 存储桶名称
* @return
*/
public boolean bucketExists(String bucketName) throws Exception {
boolean flag = minioClient.bucketExists(BucketExistsArgs.builder().bucket(bucketName).build());
        if (flag) {
return true;
}
return false;
}

/**
     * 创建存储桶
*
     * @param bucketName 存储桶名称
*/
public boolean makeBucket(String bucketName)
throws Exception {
boolean flag = bucketExists(bucketName);
        if (!flag) {
minioClient.makeBucket(MakeBucketArgs.builder().bucket(bucketName).build());
            return true;
} else {
return false;
}
    }

/**
     * 列出所有存储桶名称
*
     * @return
*/
public List<String> listBucketNames() throws Exception {
List<Bucket> bucketList = listBuckets();
List<String> bucketListName = new ArrayList<>();
        for (Bucket bucket : bucketList) {
bucketListName.add(bucket.name());
}
return bucketListName;
}

/**
     * 列出所有存储桶
*
     * @return
*/
public List<Bucket> listBuckets() throws Exception {
return minioClient.listBuckets();
}

/**
     * 删除存储桶
*
     * @param bucketName 存储桶名称
* @return
*/
public boolean removeBucket(String bucketName) throws Exception {
boolean flag = bucketExists(bucketName);
        if (flag) {
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(RemoveBucketArgs.builder().bucket(bucketName).build());
flag = bucketExists(bucketName);
            if (!flag) {
return true;
}

        }
return false;
}

/**
     * 列出存储桶中的所有对象名称
*
     * @param bucketName 存储桶名称
* @return
*/
public List<String> listObjectNames(String bucketName) throws Exception {
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
*
     * @param bucketName 存储桶名称
* @return
*/
public Iterable<Result<Item>> listObjects(String bucketName) throws Exception {
boolean flag = bucketExists(bucketName);
        if (flag) {
return minioClient.listObjects(ListObjectsArgs.builder().bucket(bucketName).build());
}
return null;
}


/**
     * 获取年月日[2020, 09, 01]
     * @return
*/
protected static String[] getDateFolder() {
String[] retVal = new String[3];

LocalDate localDate = LocalDate.now();
retVal[0] = localDate.getYear() + "";

        int month = localDate.getMonthValue();
retVal[1] = month < 10 ? "0" + month : month + "";

        int day = localDate.getDayOfMonth();
retVal[2] = day < 10 ? "0" + day : day + "";

        return retVal;
}

/**
     * 上传文件
*
     * @param bucketName bucket名称
* @param objectName 文件名称
* @param in     文件流
* @throws Exception https://docs.minio.io/cn/java-client-api-reference.html#putObject
     */
public String putObject(String bucketName, String objectName, InputStream in) throws Exception {
ObjectWriteResponse objectWriteResponse = minioClient.putObject(PutObjectArgs.builder()
.bucket(bucketName)
.object(objectName)
.stream(in, in.available(), -1)
.build()
        );
        return this.getObjectUrl(bucketName,objectName);
}

/**
     * 以流的形式获取一个文件对象
*
     * @param bucketName 存储桶名称
* @param objectName 存储桶里的对象名称
* @return
*/
public InputStream getObject(String bucketName, String objectName)
throws Exception {
boolean flag = bucketExists(bucketName);
        if (flag) {
StatObjectResponse statObject = statObject(bucketName, objectName);
            if (statObject != null && statObject.size() > 0) {
InputStream stream = minioClient.getObject(GetObjectArgs.builder()
.bucket(bucketName)
.object(objectName)
.build());
                return stream;
}
        }
return null;
}

/**
     * 以流的形式获取一个文件对象（断点下载）
*
     * @param bucketName 存储桶名称
* @param objectName 存储桶里的对象名称
* @param offset     起始字节的位置
* @param length     要读取的长度 (可选，如果无值则代表读到文件结尾)
     * @return
*/
public InputStream getObject(String bucketName, String objectName, long offset, Long length)
throws Exception {
boolean flag = bucketExists(bucketName);
        if (flag) {
StatObjectResponse statObject = statObject(bucketName, objectName);
            if (statObject != null && statObject.size() > 0) {
InputStream stream = minioClient.getObject(GetObjectArgs.builder()
.bucket(bucketName)
.object(objectName)
.offset(offset)
.length(length)
.build());
                return stream;
}
        }
return null;
}

/**
     * 下载并将文件保存到本地
*
     * @param bucketName 存储桶名称
* @param objectName 存储桶里的对象名称
//     * @param fileName   File name
     * @return
*/
public boolean getObjectFile(String bucketName, String objectName)
throws Exception {
boolean flag = bucketExists(bucketName);
        if (flag) {
StatObjectResponse statObject = statObject(bucketName, objectName);
            if (statObject != null && statObject.size() > 0) {
GetObjectResponse getObjectResponse = minioClient.getObject(GetObjectArgs.builder()
.bucket(bucketName)
.object(objectName)
.build());
                return true;
}
        }
return false;
}

/**
     * 删除一个对象
*
     * @param bucketName 存储桶名称
* @param objectName 存储桶里的对象名称
*/
public boolean removeObject(String bucketName, String objectName)
throws Exception {
boolean flag = bucketExists(bucketName);
        if (flag) {
minioClient.removeObject(RemoveObjectArgs.builder().bucket(bucketName).object(objectName).build());
            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
*
     * @param bucketName  存储桶名称
* @param objectNames 含有要删除的多个object名称的迭代器对象
* @return
*/
public List<String> removeObject(String bucketName, List<String> objectNames)
throws Exception {
List<String> deleteErrorNames = new ArrayList<>();
        boolean flag = bucketExists(bucketName);
        if (flag) {
List<DeleteObject> deleteObjectList = new ArrayList<>();
            if (ObjectUtil.isNotEmpty(objectNames)){
for(String objectName : objectNames){
deleteObjectList.add(new DeleteObject(objectName));
}
            }
Iterable<Result<DeleteError>> results = minioClient.removeObjects(
RemoveObjectsArgs.builder()
.bucket(bucketName)
.objects(deleteObjectList)
.build()
            );
            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。
*
     * @param bucketName 存储桶名称
* @param objectName 存储桶里的对象名称
* @param expires    失效时间（以秒为单位），默认是7天，不得大于七天
* @return
*/
public String presignedGetObject(String bucketName, String objectName, Integer expires)
throws Exception {
boolean flag = bucketExists(bucketName);
String url = "";
        if (flag) {
if (expires < 1 || expires > DEFAULT_EXPIRY_TIME) {
throw new RuntimeException(expires+
                        ":expires must be in range of 1 to " + DEFAULT_EXPIRY_TIME);
}
url = minioClient.getPresignedObjectUrl(
GetPresignedObjectUrlArgs.builder()
.bucket(bucketName)
.object(objectName)
.expiry(expires)
.build());
}
return url;
}

//    /**
//     * 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。
//     *
//     * @param bucketName 存储桶名称
//     * @param objectName 存储桶里的对象名称
//     * @param expires    失效时间（以秒为单位），默认是7天，不得大于七天
//     * @return
//     */
//    public String presignedPutObject(String bucketName, String objectName, Integer expires)
//            throws Exception {
//        boolean flag = bucketExists(bucketName);
//        String url = "";
//        if (flag) {
//            if (expires < 1 || expires > DEFAULT_EXPIRY_TIME) {
//                throw new RuntimeException(expires+
//                        ":expires must be in range of 1 to " + DEFAULT_EXPIRY_TIME);
//            }
//            url = minioClient.presignedPutObject(bucketName, objectName, expires);
//        }
//        return url;
//    }

/**
     * 获取对象的元数据
*
     * @param bucketName 存储桶名称
* @param objectName 存储桶里的对象名称
* @return
*/
public StatObjectResponse statObject(String bucketName, String objectName)
throws Exception {
boolean flag = bucketExists(bucketName);
        if (flag) {
StatObjectResponse statObject = minioClient.statObject(StatObjectArgs.builder().bucket(bucketName).object(objectName).build());
            return statObject;
}
return null;
}

/**
     * 文件访问路径
*
     * @param bucketName 存储桶名称
* @param objectName 存储桶里的对象名称
* @return
*/
public String getObjectUrl(String bucketName, String objectName) throws Exception {
boolean flag = bucketExists(bucketName);
String url = "";
        if (flag) {
url = minioClient.getPresignedObjectUrl(
GetPresignedObjectUrlArgs.builder()
.method(Method.GET)
.bucket(bucketName)
.object(objectName)
.build()
            );
}
return url;
}

}


----------------------------------------------------------
package com.gisinfo.minio.web.util;


import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

/**
 * @Author: Yin BenLi
 * @Description: MultipartFile转成File工具类
* @Date: Create in 2020/4/8 17:19
 */
public class MultipartFileToFile {

/**
     * MultipartFile 转 File
     * @param file
* @throws Exception
     */
public static File multipartFileToFile(MultipartFile file) throws Exception {

File toFile = null;
        if (file.equals("") || file.getSize() <= 0) {
file = null;
} else {
InputStream ins = null;
ins = file.getInputStream();
toFile = new File(file.getOriginalFilename());
inputStreamToFile(ins, toFile);
ins.close();
}
return toFile;
}

/**
     * 获取流文件
* @param ins
* @param file
*/
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();
}
    }

/**
     * 删除本地临时文件
* @param file
*/
public static void delteTempFile(File file) {
if (file != null) {
File del = new File(file.toURI());
del.delete();
}
    }
}


-------------------------------------------------------
@RestController
public class MinioController {

@Value("${server.port}")
String port;

@Resource
private MinioUtilService minioUtilService;


@PostMapping(value = "/upload")
@SneakyThrows(Exception.class)
public Results upload(@RequestParam("multipartFile") MultipartFile file){
File pFile = MultipartFileToFile.multipartFileToFile(file);
System.out.println(pFile.getName());
minioUtilService.putObject("test01","001/"+pFile.getName(),FileUtil.getInputStream(pFile));
        return Results.success(file.getName());
}

@PostMapping(value = "/uploadFiles")
@SneakyThrows(Exception.class)
public Results uploadFiles(@RequestParam("multipartFiles") MultipartFile[] files){
    Arrays.asList(files).stream().forEach(file -> {
        try {
            File pFile = MultipartFileToFile.multipartFileToFile(file);
            minioUtilService.putObject("test01","001/"+pFile.getName(),FileUtil.getInputStream(pFile));
        } catch (Exception e) {
            e.printStackTrace();
        }
    } );
    return Results.success("999");
}


}
------------------------------------------------------
@SpringBootApplication
public class Minio830Application {

public static void main(String[] args) {
SpringApplication.run(Minio830Application.class, args);
}

}

----------------------------------------------------

启动项目

postman
http://127.0.0.1:9000/upload

上传多张

http://127.0.0.1:9000/uploadFiles

欢迎打赏谢谢看官

package com.gisinfo.minio.web.util;

import cn.hutool.core.io.FileUtil;
import cn.hutool.core.util.IdUtil;
import cn.hutool.core.util.ObjectUtil;
import io.minio.*;
import io.minio.http.Method;
import io.minio.messages.Bucket;
import io.minio.messages.DeleteError;
import io.minio.messages.DeleteObject;
import io.minio.messages.Item;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.InputStream;
import java.time.LocalDate;
import java.util.*;

@Service
public class MinioUtilService {

    /**
     * url分隔符
*/
public static final String URI_DELIMITER = "/";

@Autowired
    private MinioClient minioClient;

    private static final int DEFAULT_EXPIRY_TIME = 7 * 24 * 3600;

/**
     * 检查存储桶是否存在
*
     * @param bucketName 存储桶名称
* @return
*/
public boolean bucketExists(String bucketName) throws Exception {
        boolean flag = minioClient.bucketExists(BucketExistsArgs.builder().bucket(bucketName).build());
        if (flag) {
            return true;
}
        return false;
}

    /**
     * 创建存储桶
*
     * @param bucketName 存储桶名称
*/
public boolean makeBucket(String bucketName)
            throws Exception {
        boolean flag = bucketExists(bucketName);
        if (!flag) {
            minioClient.makeBucket(MakeBucketArgs.builder().bucket(bucketName).build());
            return true;
} else {
            return false;
}
    }

    /**
     * 列出所有存储桶名称
*
     * @return
*/
public List<String> listBucketNames() throws Exception {
        List<Bucket> bucketList = listBuckets();
List<String> bucketListName = new ArrayList<>();
        for (Bucket bucket : bucketList) {
            bucketListName.add(bucket.name());
}
        return bucketListName;
}

    /**
     * 列出所有存储桶
*
     * @return
*/
public List<Bucket> listBuckets() throws Exception {
        return minioClient.listBuckets();
}

    /**
     * 删除存储桶
*
     * @param bucketName 存储桶名称
* @return
*/
public boolean removeBucket(String bucketName) throws Exception {
        boolean flag = bucketExists(bucketName);
        if (flag) {
            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(RemoveBucketArgs.builder().bucket(bucketName).build());
flag = bucketExists(bucketName);
            if (!flag) {
                return true;
}

        }
        return false;
}

    /**
     * 列出存储桶中的所有对象名称
*
     * @param bucketName 存储桶名称
* @return
*/
public List<String> listObjectNames(String bucketName) throws Exception {
        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
*
     * @param bucketName 存储桶名称
* @return
*/
public Iterable<Result<Item>> listObjects(String bucketName) throws Exception {
        boolean flag = bucketExists(bucketName);
        if (flag) {
            return minioClient.listObjects(ListObjectsArgs.builder().bucket(bucketName).build());
}
        return null;
}


    /**
     * 获取年月日[2020, 09, 01]
     * @return
*/
protected static String[] getDateFolder() {
        String[] retVal = new String[3];

LocalDate localDate = LocalDate.now();
retVal[0] = localDate.getYear() + "";

        int month = localDate.getMonthValue();
retVal[1] = month < 10 ? "0" + month : month + "";

        int day = localDate.getDayOfMonth();
retVal[2] = day < 10 ? "0" + day : day + "";

        return retVal;
}

    /**
     * 上传文件
*
     * @param bucketName bucket名称
* @param objectName 文件名称
* @param in     文件流
* @throws Exception https://docs.minio.io/cn/java-client-api-reference.html#putObject
     */
public String putObject(String bucketName, String objectName, InputStream in) throws Exception {
        ObjectWriteResponse objectWriteResponse = minioClient.putObject(PutObjectArgs.builder()
                .bucket(bucketName)
                .object(objectName)
                .stream(in, in.available(), -1)
                .build()
        );
        return this.getObjectUrl(bucketName,objectName);
}

    /**
     * 以流的形式获取一个文件对象
*
     * @param bucketName 存储桶名称
* @param objectName 存储桶里的对象名称
* @return
*/
public InputStream getObject(String bucketName, String objectName)
            throws Exception {
        boolean flag = bucketExists(bucketName);
        if (flag) {
            StatObjectResponse statObject = statObject(bucketName, objectName);
            if (statObject != null && statObject.size() > 0) {
                InputStream stream = minioClient.getObject(GetObjectArgs.builder()
                        .bucket(bucketName)
                        .object(objectName)
                        .build());
                return stream;
}
        }
        return null;
}

    /**
     * 以流的形式获取一个文件对象（断点下载）
*
     * @param bucketName 存储桶名称
* @param objectName 存储桶里的对象名称
* @param offset     起始字节的位置
* @param length     要读取的长度 (可选，如果无值则代表读到文件结尾)
     * @return
*/
public InputStream getObject(String bucketName, String objectName, long offset, Long length)
            throws Exception {
        boolean flag = bucketExists(bucketName);
        if (flag) {
            StatObjectResponse statObject = statObject(bucketName, objectName);
            if (statObject != null && statObject.size() > 0) {
                InputStream stream = minioClient.getObject(GetObjectArgs.builder()
                        .bucket(bucketName)
                        .object(objectName)
                        .offset(offset)
                        .length(length)
                        .build());
                return stream;
}
        }
        return null;
}

    /**
     * 下载并将文件保存到本地
*
     * @param bucketName 存储桶名称
* @param objectName 存储桶里的对象名称
//     * @param fileName   File name
     * @return
*/
public boolean getObjectFile(String bucketName, String objectName)
            throws Exception {
        boolean flag = bucketExists(bucketName);
        if (flag) {
            StatObjectResponse statObject = statObject(bucketName, objectName);
            if (statObject != null && statObject.size() > 0) {
                GetObjectResponse getObjectResponse = minioClient.getObject(GetObjectArgs.builder()
                        .bucket(bucketName)
                        .object(objectName)
                        .build());
                return true;
}
        }
        return false;
}

/**
     * 删除一个对象
*
     * @param bucketName 存储桶名称
* @param objectName 存储桶里的对象名称
*/
public boolean removeObject(String bucketName, String objectName)
throws Exception {
boolean flag = bucketExists(bucketName);
        if (flag) {
minioClient.removeObject(RemoveObjectArgs.builder().bucket(bucketName).object(objectName).build());
            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
*
     * @param bucketName  存储桶名称
* @param objectNames 含有要删除的多个object名称的迭代器对象
* @return
*/
public List<String> removeObject(String bucketName, List<String> objectNames)
            throws Exception {
        List<String> deleteErrorNames = new ArrayList<>();
        boolean flag = bucketExists(bucketName);
        if (flag) {
            List<DeleteObject> deleteObjectList = new ArrayList<>();
            if (ObjectUtil.isNotEmpty(objectNames)){
                for(String objectName : objectNames){
                    deleteObjectList.add(new DeleteObject(objectName));
}
            }
            Iterable<Result<DeleteError>> results = minioClient.removeObjects(
                    RemoveObjectsArgs.builder()
                    .bucket(bucketName)
                    .objects(deleteObjectList)
                    .build()
            );
            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。
*
     * @param bucketName 存储桶名称
* @param objectName 存储桶里的对象名称
* @param expires    失效时间（以秒为单位），默认是7天，不得大于七天
* @return
*/
public String presignedGetObject(String bucketName, String objectName, Integer expires)
            throws Exception {
        boolean flag = bucketExists(bucketName);
String url = "";
        if (flag) {
            if (expires < 1 || expires > DEFAULT_EXPIRY_TIME) {
                throw new RuntimeException(expires+
                        ":expires must be in range of 1 to " + DEFAULT_EXPIRY_TIME);
}
            url = minioClient.getPresignedObjectUrl(
                    GetPresignedObjectUrlArgs.builder()
                    .bucket(bucketName)
                    .object(objectName)
                    .expiry(expires)
                    .build());
}
        return url;
}

//    /**
//     * 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。
//     *
//     * @param bucketName 存储桶名称
//     * @param objectName 存储桶里的对象名称
//     * @param expires    失效时间（以秒为单位），默认是7天，不得大于七天
//     * @return
//     */
//    public String presignedPutObject(String bucketName, String objectName, Integer expires)
//            throws Exception {
//        boolean flag = bucketExists(bucketName);
//        String url = "";
//        if (flag) {
//            if (expires < 1 || expires > DEFAULT_EXPIRY_TIME) {
//                throw new RuntimeException(expires+
//                        ":expires must be in range of 1 to " + DEFAULT_EXPIRY_TIME);
//            }
//            url = minioClient.presignedPutObject(bucketName, objectName, expires);
//        }
//        return url;
//    }

/**
     * 获取对象的元数据
*
     * @param bucketName 存储桶名称
* @param objectName 存储桶里的对象名称
* @return
*/
public StatObjectResponse statObject(String bucketName, String objectName)
            throws Exception {
        boolean flag = bucketExists(bucketName);
        if (flag) {
            StatObjectResponse statObject = minioClient.statObject(StatObjectArgs.builder().bucket(bucketName).object(objectName).build());
            return statObject;
}
        return null;
}

    /**
     * 文件访问路径
*
     * @param bucketName 存储桶名称
* @param objectName 存储桶里的对象名称
* @return
*/
public String getObjectUrl(String bucketName, String objectName) throws Exception {
        boolean flag = bucketExists(bucketName);
String url = "";
        if (flag) {
            url = minioClient.getPresignedObjectUrl(
                    GetPresignedObjectUrlArgs.builder()
                            .method(Method.GET)
                            .bucket(bucketName)
                            .object(objectName)
                            .build()
            );
}
        return url;
}

}

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原文地址：https://www.cnblogs.com/qq3245792286/p/16135610.html