前言
上傳文件到Azure Storage 的案例比較少,只能到官網去研究,並且也不一定拿來就可以使用。
Blob 存儲簡介
爲任何種類的非結構化數據使用可進行大規模縮放的對象存儲
第一步:配置pom.xml
<!-- https://mvnrepository.com/artifact/com.microsoft.azure/azure-storage -->
<dependency>
<groupId>com.microsoft.azure</groupId>
<artifactId>azure-storage</artifactId>
<version>8.4.0</version>
</dependency>
第二步:增加azure blob配置
可以配置到項目中的*.properties和*yml 文件中
# properties 配置如下
azureblob.defaultEndpointsProtocol=https
azureblob.blobEndpoint=https://teststorage.blob.core.chinacloudapi.cn/
azureblob.queueEndpoint=https://teststorage.queue.core.chinacloudapi.cn/
azureblob.tableEndpoint=https://teststorage.table.core.chinacloudapi.cn/
azureblob.accountName=teststorage
azureblob.accountKey=accountkey
# yml 配置如下
azure blob
defaultEndpointsProtocol: https
blobEndpoint: https://teststorage.queue.core.chinacloudapi.cn/
queueEndpoint: https://teststorage.queue.core.chinacloudapi.cn/
tableEndpoint: https://teststorage.queue.core.chinacloudapi.cn/
accountName: teststorage
accountKey: account key
第三步:編寫配置信息類(StorageConfig)
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
@Configuration
@ConfigurationProperties(prefix = "azure blob"
@NoArgsConstructor
@Data
public class StorageConfig {
@Value("${azureblob.defaultEndpointsProtocol}")
private String defaultEndpointsProtocol;
@Value("${azureblob.blobEndpoint}")
private String blobEndpoint;
@Value("${azureblob.queueEndpoint}")
private String queueEndpoint;
@Value("${azureblob.tableEndpoint}")
private String tableEndpoint;
@Value("${azureblob.accountName}")
private String accountName;
@Value("${azureblob.accountKey}")
private String accountKey;
}
**備註:這裏用了lombok註解,也可以手寫get/set
第四步:編寫上傳文件類(BlobHelper)
import com.microsoft.azure.storage.CloudStorageAccount;
import com.microsoft.azure.storage.blob.BlobContainerPermissions;
import com.microsoft.azure.storage.blob.BlobContainerPublicAccessType;
import com.microsoft.azure.storage.blob.CloudBlobClient;
import com.microsoft.azure.storage.blob.CloudBlobContainer;
public class BlobHelper {
public static CloudBlobContainer getBlobContainer(String containerName, StorageConfig storageConfig)
{
try
{
String blobStorageConnectionString = String.format("DefaultEndpointsProtocol=%s;"
+ "BlobEndpoint=%s;"
+ "QueueEndpoint=%s;"
+ "TableEndpoint=%s;"
+ "AccountName=%s;"
+ "AccountKey=%s",
storageConfig.getDefaultEndpointsProtocol(), storageConfig.getBlobEndpoint(),
storageConfig.getQueueEndpoint(), storageConfig.getTableEndpoint(),
storageConfig.getAccountName(), storageConfig.getAccountKey());
CloudStorageAccount account = CloudStorageAccount.parse(blobStorageConnectionString);
CloudBlobClient serviceClient = account.createCloudBlobClient();
CloudBlobContainer container = serviceClient.getContainerReference(containerName);
// Create a permissions object.
BlobContainerPermissions containerPermissions = new BlobContainerPermissions();
// Include public access in the permissions object.
containerPermissions.setPublicAccess(BlobContainerPublicAccessType.CONTAINER);
// Set the permissions on the container.
container.uploadPermissions(containerPermissions);
container.createIfNotExists();
return container;
}
catch(Exception e)
{
// 加載上傳文件啓動異常
return null;
}
}
}
第五步:增加工具類(MyUtil)
public class MyUtils {
private static char hexdigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e',
'f' };
public static String getMD5(String inStr) {
MessageDigest md5 = null;
try {
md5 = MessageDigest.getInstance("MD5");
} catch (Exception e) {
e.printStackTrace();
return "";
}
char[] charArray = inStr.toCharArray();
byte[] byteArray = new byte[charArray.length];
for (int i = 0; i < charArray.length; i++)
byteArray[i] = (byte) charArray[i];
byte[] md5Bytes = md5.digest(byteArray);
StringBuffer hexValue = new StringBuffer();
for (int i = 0; i < md5Bytes.length; i++) {
int val = ((int) md5Bytes[i]) & 0xff;
if (val < 16)
hexValue.append("0");
hexValue.append(Integer.toHexString(val));
}
return hexValue.toString();
}
public static String getMD5(InputStream fileStream) {
try {
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] buffer = new byte[2048];
int length = -1;
while ((length = fileStream.read(buffer)) != -1) {
md.update(buffer, 0, length);
}
byte[] b = md.digest();
return byteToHexString(b);
} catch (Exception ex) {
ex.printStackTrace();
return null;
}finally{
try {
fileStream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
private static String byteToHexString(byte[] tmp) {
String s;
// 用字節表示就是 16 個字節
char str[] = new char[16 * 2]; // 每個字節用 16 進製表示的話,使用兩個字符,
// 所以表示成 16 進制需要 32 個字符
int k = 0; // 表示轉換結果中對應的字符位置
for (int i = 0; i < 16; i++) { // 從第一個字節開始,對 MD5 的每一個字節
// 轉換成 16 進制字符的轉換
byte byte0 = tmp[i]; // 取第 i 個字節
str[k++] = hexdigits[byte0 >>> 4 & 0xf]; // 取字節中高 4 位的數字轉換,
// >>> 爲邏輯右移,將符號位一起右移
str[k++] = hexdigits[byte0 & 0xf]; // 取字節中低 4 位的數字轉換
}
s = new String(str); // 換後的結果轉換爲字符串
return s;
}
}
第六步:上傳文件接口( MultipartFile)
@Api(value = "微軟雲存儲", description = "微軟雲存儲")
@RestController
@RequestMapping("azure")
@Slf4j
public class FileUploadController {
@Autowired
private StorageConfig storageConfig;
@ApiOperation(value = "圖片上傳Azure", notes = "圖片上傳Azure")
@RequestMapping(value = "/uploadImg", method = RequestMethod.POST, consumes = "multipart/*", headers = "content-type=multipart/form-data")
public Object uploadImg(@RequestBody MultipartFile file) {
try {
if (file != null) {
//獲取或創建container
CloudBlobContainer blobContainer = BlobHelper.getBlobContainer(blobContainerName, storageConfig);
if (!file.isEmpty()) {
try {
//拼裝blob的名稱(前綴名稱+文件的md5值+文件擴展名稱)
String checkSum = MyUtils.getMD5(file.getInputStream());
String fileExtension = getFileExtension(file.getOriginalFilename()).toLowerCase();
String preName = getBlobPreName(0, false).toLowerCase();
String blobName = preName + checkSum + fileExtension;
log.info(blobName);
//設置文件類型,並且上傳到azure blob
CloudBlockBlob blob = blobContainer.getBlockBlobReference(blobName);
blob.getProperties().setContentType(file.getContentType());
blob.upload(file.getInputStream(), file.getSize());
//將上傳後的圖片URL返回
return blob.getUri().toString();
} catch (Exception e) {
log.error("upload azure oss error:{}", e);
}
}
}
// }
} catch (Exception e) {
log.error("upload azure oss error:{}", e);
}
}
return null;
}
結束
好了,一個簡單的SpringBoot 上傳文件至微軟雲的小案例就完成啦,當然如果是圖片、視頻等可能還需要進行文件格式的攔截,代碼如下:
if (!(file.getContentType().toLowerCase().equals("image/jpg")
|| file.getContentType().toLowerCase().equals("image/jpeg")
|| file.getContentType().toLowerCase().equals("image/png"))) {
infoUniformResultTemplate.setCode(Code.FAIL.getCode());
log.info("圖片格式不正確");
}
擴展
Azure 信息保護客戶端支持的文件類型如下:
- Adobe 可移植文檔格式:pdf
- Microsoft Project:.mpp、.mpt
- Microsoft Publisher:.pub
- Microsoft XPS:.xps .oxps
- 圖像:.jpg、.jpe、.jpeg、.jif、.jfif、.jfi、 .png、.tif、.tiff
- Autodesk Design Review 2013:.dwfx
- Adobe Photoshop:.psd
- 數碼底片:.dng
- Microsoft Office:*
官網地址:https://docs.microsoft.com/zh-cn/azure/information-protection/rms-client/client-admin-guide-file-types):