新特性：支持桶名前缀配置。

minio-plus-common/src/main/java/org/liuxp/minioplus/common/config/MinioPlusProperties.java

@@ -40,6 +40,13 @@ public class MinioPlusProperties {
      */
     private String browserUrl;
 
+    /**
+     * 桶名前缀，默认为空。如果多个SDK连接同一个minio后端服务，可以配置不同的前缀来区分。
+     * 可选参数，特殊字符不支持,需符合S3存储路径的命名规则
+     * 具体规则参考 https://docs.aws.amazon.com/AmazonS3/latest/userguide/bucketnamingrules.html
+     */
+    private String bucketPrefix = "";
+
     /**
      * 上传预签名URL有效期，单位为分钟
      * 可选参数，默认值为60分钟

minio-plus-common/src/main/java/org/liuxp/minioplus/common/enums/StorageBucketEnums.java

@@ -1,5 +1,6 @@
 package org.liuxp.minioplus.common.enums;
 
+import cn.hutool.core.text.CharSequenceUtil;
 import cn.hutool.core.util.ArrayUtil;
 
 import java.util.Arrays;
@@ -93,18 +94,40 @@ public enum StorageBucketEnums {
     }
 
     /**
-     * 根据扩展名取得桶编码
+     * 根据扩展名取得桶名
      * @param suffix 扩展名
-     * @return 桶编码
+     * @param bucketPrefix 桶名前缀
+     * @return 桶名
      */
-    public static String getBucketByFileSuffix(String suffix) {
+    public static String getBucketByFileSuffix(String suffix,String bucketPrefix) {
 
-        return Arrays.stream(StorageBucketEnums.values())
+        String bucketName =  Arrays.stream(StorageBucketEnums.values())
                 .filter(item -> ArrayUtil.contains(item.types, suffix))
                 .findFirst()
                 .orElse(StorageBucketEnums.OTHER)
                 .code;
 
+        if (CharSequenceUtil.isNotBlank(bucketPrefix)) {
+            bucketName =  bucketPrefix + "-" + bucketName;
+        }
+
+        return bucketName;
     }
 
-}
+    /**
+     * 取得预览图桶名
+     * @param bucketPrefix 桶名前缀
+     * @return 桶名
+     */
+    public static String getPreviewBucket(String bucketPrefix) {
+
+        String bucketName = StorageBucketEnums.IMAGE_PREVIEW.getCode();
+
+        if (CharSequenceUtil.isNotBlank(bucketPrefix)) {
+            bucketName =  bucketPrefix + "-" + bucketName;
+        }
+
+        return bucketName;
+    }
+
+}

minio-plus-core/src/main/java/org/liuxp/minioplus/core/engine/impl/StorageEngineServiceImpl.java

@@ -375,15 +375,17 @@ public class StorageEngineServiceImpl implements StorageEngineService {
             // 文件权限校验，元数据为空或者当前登录用户不是文件所有者时抛出异常
             this.authentication(metadata, fileKey, userId);
 
-            if (!StorageBucketEnums.IMAGE.getCode().equals(metadata.getStorageBucket())) {
+            // 获取存储桶值，并检查是否为null或不包含IMAGE的Code
-                // 不是图片时，返回文件类型
+            String storageBucket = metadata.getStorageBucket();
+            if (storageBucket == null || !storageBucket.contains(StorageBucketEnums.IMAGE.getCode())) {
+                // 当存储桶为空或不包含IMAGE的Code时，返回文件后缀
                 return metadata.getFileSuffix();
             }
 
             // 生成缩略图
             generatePreviewImage(metadata);
             // 创建图片预览地址
-            return minioS3Client.getPreviewUrl(metadata.getFileMimeType(), StorageBucketEnums.IMAGE_PREVIEW.getCode(), metadata.getStoragePath() + "/" + metadata.getFileMd5());
+            return minioS3Client.getPreviewUrl(metadata.getFileMimeType(), StorageBucketEnums.getPreviewBucket(properties.getBucketPrefix()), metadata.getStoragePath() + "/" + metadata.getFileMd5());
         } catch (Exception e) {
             // 打印日志
             log.error(e.getMessage(), e);
@@ -404,7 +406,7 @@ public class StorageEngineServiceImpl implements StorageEngineService {
             if (Boolean.FALSE.equals(metadata.getIsPreview())) {
                 
                 // 获取原图的bytes
-                byte[] imageOriginBytes = minioS3Client.getObject(StorageBucketEnums.IMAGE.getCode(), metadata.getStoragePath() + "/" + metadata.getFileMd5());
+                byte[] imageOriginBytes = minioS3Client.getObject(metadata.getStorageBucket(), metadata.getStoragePath() + "/" + metadata.getFileMd5());
                 
                 // 定义文件流
                 @Cleanup ByteArrayInputStream imageOriginInputStream = new ByteArrayInputStream(imageOriginBytes);
@@ -419,7 +421,7 @@ public class StorageEngineServiceImpl implements StorageEngineService {
                 byte[] previewImageBytes = previewImage.toByteArray();
                 @Cleanup ByteArrayInputStream previewImageInputStream = new ByteArrayInputStream(previewImageBytes);
                 
-                minioS3Client.putObject(StorageBucketEnums.IMAGE_PREVIEW.getCode(), CommonUtil.getObjectName(metadata.getFileMd5()), previewImageInputStream, previewImageBytes.length, metadata.getFileMimeType());
+                minioS3Client.putObject(StorageBucketEnums.getPreviewBucket(properties.getBucketPrefix()), CommonUtil.getObjectName(metadata.getFileMd5()), previewImageInputStream, previewImageBytes.length, metadata.getFileMimeType());
                 metadata.setIsPreview(Boolean.TRUE);
                 FileMetadataInfoUpdateDTO fileMetadataInfoUpdateDTO = BeanUtil.copyProperties(metadata, FileMetadataInfoUpdateDTO.class);
                 metadataRepository.update(fileMetadataInfoUpdateDTO);
@@ -515,7 +517,7 @@ public class StorageEngineServiceImpl implements StorageEngineService {
             minioS3Client.removeObject(metadata.getStorageBucket(), metadata.getStoragePath() + "/" + metadata.getFileMd5());
             if (Boolean.TRUE.equals(metadata.getIsPreview())) {
                 // 当存在缩略图时，同步删除缩略图
-                minioS3Client.removeObject(StorageBucketEnums.IMAGE_PREVIEW.getCode(), metadata.getStoragePath() + "/" + metadata.getFileMd5());
+                minioS3Client.removeObject(StorageBucketEnums.getPreviewBucket(properties.getBucketPrefix()), metadata.getStoragePath() + "/" + metadata.getFileMd5());
             }
         }
     }
@@ -806,7 +808,7 @@ public class StorageEngineServiceImpl implements StorageEngineService {
             String fileMimeType = FileUtil.getMimeType(bo.getFullFileName());
 
             // 存储桶
-            bucketName = StorageBucketEnums.getBucketByFileSuffix(suffix);
+            bucketName = StorageBucketEnums.getBucketByFileSuffix(suffix,properties.getBucketPrefix());
             // 创建桶
             minioS3Client.makeBucket(bucketName);
 

minio-plus-core/src/main/java/org/liuxp/minioplus/core/service/impl/StorageServiceImpl.java

@@ -249,7 +249,7 @@ public class StorageServiceImpl implements StorageService {
         String fileMimeType = ContentTypeUtil.getContentType(suffix);
 
         // 根据文件后缀取得桶
-        String storageBucket = StorageBucketEnums.getBucketByFileSuffix(suffix);
+        String storageBucket = StorageBucketEnums.getBucketByFileSuffix(suffix,properties.getBucketPrefix());
 
         // 取得存储路径
         String storagePath = CommonUtil.getPathByDate();

minio-plus-spring-boot-starter/minio-plus-all-springboot-starter/src/main/java/org/liuxp/minioplus/extension/controller/StorageController.java

@@ -173,7 +173,7 @@ public class StorageController implements StorageWebAPI {
     public void icon(String fileType) {
         try {
             // 根据文件后缀取得桶
-            String storageBucket = StorageBucketEnums.getBucketByFileSuffix(fileType);
+            String storageBucket = StorageBucketEnums.getBucketByFileSuffix(fileType,"");
 
             ClassPathResource cpr = new ClassPathResource(storageBucket + ".png");
 

minio-plus-spring-boot-starter/minio-plus-all-springboot2-starter/src/main/java/org/liuxp/minioplus/extension/controller/StorageController.java

@@ -173,7 +173,7 @@ public class StorageController implements StorageWebAPI {
     public void icon(String fileType) {
         try {
             // 根据文件后缀取得桶
-            String storageBucket = StorageBucketEnums.getBucketByFileSuffix(fileType);
+            String storageBucket = StorageBucketEnums.getBucketByFileSuffix(fileType,"");
 
             ClassPathResource cpr = new ClassPathResource(storageBucket + ".png");