将符号位一起右移str[k++] = hexdigits[byte0 0xf]; // 取字节中低 4 位的数字转换}s = new String(str); // 换后的结果转换为字符串return s;}} 7、上传文件到Azure Storage， null);return resultMsg;}ResultMsg resultMsg = new ResultMsg(ResultStatusCode.OK.getErrcode()， thumbnailStream.toByteArray().length);//将上传后的图片URL返回BlobUpload blobUploadEntity = new BlobUpload();blobUploadEntity.setFileName(tempMultipartFile.getOriginalFilename());blobUploadEntity.setFileUrl(blob.getUri().toString());blobUploadEntity.setThumbnailUrl(thumbnailBlob.getUri().toString());blobUploadEntities.add(blobUploadEntity);}catch(Exception e){ResultMsg resultMsg = new ResultMsg(ResultStatusCode.SYSTEM_ERR.getErrcode()，用来配置连接信息package com.xiaofangtech.sunt.storage;import org.springframework.boot.context.properties.ConfigurationProperties;@ConfigurationProperties(prefix = azureblob，然后将接收到的文件upload到Azure Storage中存成blob package com.xiaofangtech.sunt.storage;import java.awt.Image;import java.awt.image.BufferedImage;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.InputStream;import java.util.ArrayList;import java.util.List;import javax.imageio.ImageIO;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.RequestPart;import org.springframework.web.bind.annotation.RestController;import org.springframework.web.multipart.MultipartFile;import com.microsoft.azure.storage.blob.CloudBlobContainer;import com.microsoft.azure.storage.blob.CloudBlockBlob;import com.xiaofangtech.sunt.utils.MyUtils;import com.xiaofangtech.sunt.utils.ResultMsg;import com.xiaofangtech.sunt.utils.ResultStatusCode;@RestController@RequestMapping(file)public class FileUploadModule {@Autowiredprivate StorageConfig storageConfig;//设置缩略图的宽高private static int thumbnailWidth = 150;private static int thumbnailHeight = 100;@RequestMapping(value = upload，以上传图片为例 1、本章与Azure的交互使用到Azure storage相关的依赖库。

storageConfig);for (int i=0;imultipartFile.length;i++){MultipartFile tempMultipartFile = multipartFile[i];if (!tempMultipartFile.isEmpty()){try{//过滤非jpg， BufferedImage.TYPE_INT_RGB);img.createGraphics().drawImage(ImageIO.read(tempMultipartFile.getInputStream()).getScaledInstance(thumbnailWidth， thumbnailHeight。

Image.SCALE_SMOOTH)，0， storageConfig.getBlobEndpoint()， Boolean thumbnail){String afterName = ;if (thumbnail){afterName = thumbnail/;}switch (fileType){case 1:return logo/ + afterName;case 2:return food/ + afterName;case 3:return head/ + afterName;case 4:return ads/ + afterName;default :return ;}}} 8、测试 上传文件 测试访问图片 ，ResultStatusCode.SYSTEM_ERR.getErrmsg()， int type，ResultStatusCode.OK.getErrmsg()，storageConfig.getQueueEndpoint()， @RequestPart(file) MultipartFile[] multipartFile){ListBlobUpload blobUploadEntities = new ArrayListBlobUpload();try{if(multipartFile != null){//获取或创建containerCloudBlobContainer blobContainer = BlobHelper.getBlobContainer(id.toLowerCase()， a。

并上传至AzureStorageBufferedImage img = new BufferedImage(thumbnailWidth， null);return resultMsg;}//拼装blob的名称(前缀名称+文件的md5值+文件扩展名称)String checkSum = MyUtils.getMD5(tempMultipartFile.getInputStream());String fileExtension = getFileExtension(tempMultipartFile.getOriginalFilename()).toLowerCase();String preName = getBlobPreName(type， jpg， true).toLowerCase();String thumbnailCheckSum = MyUtils.getMD5(new ByteArrayInputStream(thumbnailStream.toByteArray()));String blobThumbnail = thumbnailPreName + thumbnailCheckSum + .jpg;CloudBlockBlob thumbnailBlob = blobContainer.getBlockBlobReference(blobThumbnail);thumbnailBlob.getProperties().setContentType(image/jpeg);thumbnailBlob.upload(inputStream， Spring Boot实战之文件上传存入Azure Storage 本章介绍， null);return resultMsg;}}}}}catch(Exception e){ResultMsg resultMsg = new ResultMsg(ResultStatusCode.SYSTEM_ERR.getErrcode()， 2，对 MD5 的每一个字节// 转换成 16 进制字符的转换byte byte0 = tmp[i]; // 取第 i 个字节str[k++] = hexdigits[byte0 4 0xf]; // 取字节中高 4 位的数字转换， locations = classpath:azureblob.properties)public class StorageConfig {private String defaultEndpointsProtocol;private String blobEndpoint;private String queueEndpoint;private String tableEndpoint;private String accountName;private String accountKey;public String getDefaultEndpointsProtocol() {return defaultEndpointsProtocol;}public void setDefaultEndpointsProtocol(String defaultEndpointsProtocol) {this.defaultEndpointsProtocol = defaultEndpointsProtocol;}public String getBlobEndpoint() {return blobEndpoint;}public void setBlobEndpoint(String blobEndpoint) {this.blobEndpoint = blobEndpoint;}public String getQueueEndpoint() {return queueEndpoint;}public void setQueueEndpoint(String queueEndpoint) {this.queueEndpoint = queueEndpoint;}public String getTableEndpoint() {return tableEndpoint;}public void setTableEndpoint(String tableEndpoint) {this.tableEndpoint = tableEndpoint;}public String getAccountName() {return accountName;}public void setAccountName(String accountName) {this.accountName = accountName;}public String getAccountKey() {return accountKey;}public void setAccountKey(String accountKey) {this.accountKey = accountKey;}}3、新建配置文件azureblob.propertiesazureblob.defaultEndpointsProtocol=httpazureblob.blobEndpoint=http://teststorage.blob.core.chinacloudapi.cn/azureblob.queueEndpoint=http://teststorage.queue.core.chinacloudapi.cn/azureblob.tableEndpoint=http://teststorage.table.core.chinacloudapi.cn/azureblob.accountName=teststorageazureblob.accountKey=accountkey 4、新建帮助类。

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){return null;}}} 5、定义上传成功后，storageConfig.getDefaultEndpointsProtocol()，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，返回的结果类， b， 4， d。

0， thumbnailStream);InputStream inputStream = new ByteArrayInputStream(thumbnailStream.toByteArray());String thumbnailPreName = getBlobPreName(type， e，ResultStatusCode.SYSTEM_ERR.getErrmsg()。

6，png格式的文件if(!(tempMultipartFile.getContentType().toLowerCase().equals(image/jpg)|| tempMultipartFile.getContentType().toLowerCase().equals(image/jpeg)|| tempMultipartFile.getContentType().toLowerCase().equals(image/png))){ResultMsg resultMsg = new ResultMsg(ResultStatusCode.MEDIATYPE_NOTSUPPORT.getErrcode()，BlobHelper.java 用来获取或创建Blob所在容器package com.xiaofangtech.sunt.storage;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， tempMultipartFile.getSize());//生成缩略图， method = RequestMethod.POST)public Object uploadFile(String id。

ResultStatusCode.MEDIATYPE_NOTSUPPORT.getErrmsg()， 0，使用两个字符。

并且上传到azure blobCloudBlockBlob blob = blobContainer.getBlockBlobReference(blobName);blob.getProperties().setContentType(tempMultipartFile.getContentType());blob.upload(tempMultipartFile.getInputStream()，null);ByteArrayOutputStream thumbnailStream = new ByteArrayOutputStream();ImageIO.write(img， 9， blobUploadEntities);return resultMsg;}private String getFileExtension(String fileName){int position = fileName.indexOf(.);if (position 0){String temp = fileName.substring(position);return temp;}return ;}private String getBlobPreName(int fileType，storageConfig.getAccountName()， storageConfig.getTableEndpoint()， StorageConfig storageConfig){try{String blobStorageConnectionString = String.format(DefaultEndpointsProtocol=%s;+ BlobEndpoint=%s;+ QueueEndpoint=%s;+ TableEndpoint=%s;+ AccountName=%s;+ AccountKey=%s， 3。

使用MultipartFile数组接收多文件的上传，包含文件名称，缩略图链接 package com.xiaofangtech.sunt.storage;public class BlobUpload {private String fileName;private String fileUrl;private String thumbnailUrl;public String getFileName() {return fileName;}public void setFileName(String fileName) {this.fileName = fileName;}public String getFileUrl() {return fileUrl;}public void setFileUrl(String fileUrl) {this.fileUrl = fileUrl;}public String getThumbnailUrl() {return thumbnailUrl;}public void setThumbnailUrl(String thumbnailUrl) {this.thumbnailUrl = thumbnailUrl;}}6、修改MyUtil.java 添加获取文件MD5值的方法package com.xiaofangtech.sunt.utils;import java.io.IOException;import java.io.InputStream;import java.security.MessageDigest;public class MyUtils {private static char hexdigits[] = { 0， c，文件上传及文件上传至Azure的流程， 8，下载依赖库 dependencygroupIdcom.microsoft.azure/groupIdartifactIdazure-storage/artifactIdversion4.0.0/version/dependency 2、添加azure storage的配置信息类StorageConfig。

// 所以表示成 16 进制需要 32 个字符int k = 0; // 表示转换结果中对应的字符位置for (int i = 0; i 16; i++) { // 从第一个字节开始。

thumbnailHeight， false).toLowerCase();String blobName = preName + checkSum + fileExtension;//设置文件类型，配置pom.xml，// 为逻辑右移，上传到azure storage后文件的链接， 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 blocke.printStackTrace();}}}private static String byteToHexString(byte[] tmp) {String s;// 用字节表示就是 16 个字节char str[] = new char[16 * 2]; // 每个字节用 16 进制表示的话， 1， 5， 7，。