public class PutObjectProgressListener implements ProgressListener {
private long bytesWritten = 0;
private long totalBytes = -1;
private boolean succeed = false;
@Override
public void progressChanged(ProgressEvent progressEvent) {
long bytes = progressEvent.getBytes();
ProgressEventType eventType = progressEvent.getEventType();
switch (eventType) {
case TRANSFER_STARTED_EVENT:
System.out.println("Start to upload......");
break;
case REQUEST_CONTENT_LENGTH_EVENT:
this.totalBytes = bytes;
System.out.println(this.totalBytes + " bytes in total will be uploaded to OSS");
break;
case REQUEST_BYTE_TRANSFER_EVENT:
this.bytesWritten += bytes;
if (this.totalBytes != -1) {
int percent = (int)(this.bytesWritten * 100.0 / this.totalBytes);
System.out.println(bytes + " bytes have been written at this time, upload progress: " + percent + "%(" + this.bytesWritten + "/" + this.totalBytes + ")");
} else {
System.out.println(bytes + " bytes have been written at this time, upload ratio: unknown" + "(" + this.bytesWritten + "/...)");
}
break;
case TRANSFER_COMPLETED_EVENT:
this.succeed = true;
System.out.println("Succeed to upload, " + this.bytesWritten + " bytes have been transferred in total");
break;
case TRANSFER_FAILED_EVENT:
System.out.println("Failed to upload, " + this.bytesWritten + " bytes have been transferred");
break;
default:
break;
}
}
public boolean isSucceed() {
return succeed;
}
public static void main(String[] args) {
// Endpoint以杭州为例，其它Region请按实际情况填写。
String endpoint = "http://oss-cn-hangzhou.aliyuncs.com";
// 阿里云主账号AccessKey拥有所有API的访问权限，风险很高。强烈建议您创建并使用RAM账号进行API访问或日常运维，请登录 https://ram.console.aliyun.com 创建RAM账号。
String accessKeyId = "<yourAccessKeyId>";
String accessKeySecret = "<yourAccessKeySecret>";
String bucketName = "<yourBucketName>";
String objectName = "<yourObjectName>";
// 创建OSSClient实例。
OSSClient ossClient = new OSSClient(endpoint, accessKeyId, accessKeySecret);
try {
// 带进度条的上传。
ossClient.putObject(new PutObjectRequest(bucketName, objectName, new FileInputStream("<yourLocalFile>")).
<PutObjectRequest>withProgressListener(new PutObjectProgressListener()));
} catch (Exception e) {
e.printStackTrace();
}
// 关闭OSSClient。
ossClient.shutdown();
}
}
引用到spring boot 中的项目中之后的代码:
1.文件上传及监听器:
import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSSClient;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.event.ProgressEvent;
import com.aliyun.oss.event.ProgressEventType;
import com.aliyun.oss.event.ProgressListener;
import com.aliyun.oss.model.PutObjectRequest;
import com.aliyun.oss.model.PutObjectResult;
import com.google.common.collect.Lists;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.support.DefaultMultipartHttpServletRequest;
import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.net.URL;
import java.util.Date;
import java.util.List;
import java.util.Map;
/**
* 2018/7/25.
*/
public class OssUploadUtil {
private static Logger logger = LoggerFactory.getLogger(OssUploadUtil.class);
private static final String accessKeyId = OSSProperties.getAccessKey();
private static final String accessKeySecret =OSSProperties.getSecretKey();
private static final String endpoint =OSSProperties.getEndpoint();
private static final int seconds = OSSProperties.getSeconds();
/**
* 带进度的上传
*
* @param request
* @return List<String> 返回的文件地址集合
* @throws Exception
*/
public static List<String> uploadPicWithProgress(HttpServletRequest request, String bucketName, String ossKey,String redisKey,RedisService redisService) throws Exception {
//每次调用都需要实例化一次,实例化的OSSClient shoutDown 一次就不行了
OSSClient oSSClient = new OSSClient(endpoint, accessKeyId, accessKeySecret);
DefaultMultipartHttpServletRequest req = (DefaultMultipartHttpServletRequest) request;
request.setCharacterEncoding("UTF-8");
Map<String, MultipartFile> files = req.getFileMap();
int i = 0;
List<String> urlList = Lists.newArrayList();
for (String key : files.keySet()) {
String suffix = "";
MultipartFile file = files.get(key);
/* MultipartFile转File */
File f = null;
try {
f = File.createTempFile("tmpFile", null);
file.transferTo(f);
f.deleteOnExit();
} catch (Exception e) {
e.printStackTrace();
}
if (file.getOriginalFilename().contains(".")) {
suffix = file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf("."));
}
String fileName = System.currentTimeMillis() + i + suffix;
i++;
try {
PutObjectResult putObjectResult = oSSClient.putObject(new PutObjectRequest(bucketName, ossKey + fileName, f).
<PutObjectRequest>withProgressListener(new PutObjectProgressListener(redisKey,redisService)));
URL imgUrl = oSSClient.generatePresignedUrl(bucketName,ossKey + fileName,new Date());
String url = imgUrl.getAuthority()+imgUrl.getPath();
logger.debug(url);
urlList.add(url);
} catch (OSSException oe) {
logger.error("Caught an OSSException, which means your request made it to OSS, "
+ "but was rejected with an error response for some reason.Error Message: " + oe.getErrorCode()
+ "Error Code:" + oe.getErrorCode() + "Request ID:" + oe.getRequestId() + "Host ID:" + oe.getHostId(), oe);
throw new OSSException(oe.getErrorMessage(), oe);
} catch (ClientException ce) {
logger.error("Caught an ClientException, which means the client encountered "
+ "a serious internal problem while trying to communicate with OSS, "
+ "such as not being able to access the network.Error Message:" + ce.getMessage(), ce);
throw new ClientException(ce);
} finally {
oSSClient.shutdown();
}
}
return urlList;
}
public static class PutObjectProgressListener implements ProgressListener {
private String redisKey;
private RedisService redisService;
private long bytesWritten = 0;
private long totalBytes = -1;
private boolean succeed = false;
private int percent = 0;
//构造方法中加入redis
public PutObjectProgressListener() {
}
public PutObjectProgressListener(String redisKey,RedisService redisService) {
this.redisKey = redisKey;
this.redisService = redisService;
//首次添加redis值
redisService.set(redisKey,percent);
}
@Override
public void progressChanged(ProgressEvent progressEvent) {
long bytes = progressEvent.getBytes();
ProgressEventType eventType = progressEvent.getEventType();
switch (eventType) {
case TRANSFER_STARTED_EVENT:
logger.info("Start to upload......");
break;
case REQUEST_CONTENT_LENGTH_EVENT:
this.totalBytes = bytes;
logger.info(this.totalBytes + " bytes in total will be uploaded to OSS");
break;
case REQUEST_BYTE_TRANSFER_EVENT:
this.bytesWritten += bytes;
if (this.totalBytes != -1) {
percent = (int) (this.bytesWritten*100 / this.totalBytes);
//将进度percent放入redis中
redisService.set(redisKey,percent);
logger.info(bytes + " bytes have been written at this time, upload progress: " + percent + "%(" + this.bytesWritten + "/" + this.totalBytes + ")");
} else {
logger.info(bytes + " bytes have been written at this time, upload ratio: unknown" + "(" + this.bytesWritten + "/...)");
}
break;
case TRANSFER_COMPLETED_EVENT:
this.succeed = true;
logger.info("Succeed to upload, " + this.bytesWritten + " bytes have been transferred in total");
break;
case TRANSFER_FAILED_EVENT:
logger.info("Failed to upload, " + this.bytesWritten + " bytes have been transferred");
break;
default:
break;
}
}
public boolean isSucceed() {
return succeed;
}
}
}
controller层:
@RestController
@RequestMapping("/V1/upos/oss/")
public class FileUploadController extends BaseController {
private static Logger logger = LoggerFactory.getLogger(FileUploadController.class);
@Autowired
private RedisService redisService;
/**
* 阿里云图片BUCKET
*/
private final String GOODS_PIC_BUCKET_NAME="goods-item-images";
/**
* 阿里云图片默认key
*/
private final String OSS_KEY="uCan-goods";
/**
* 用于存放的上传进度的,redis key 前缀
*/
private final String U_POS_GOODS_PIC="U_POS_GOODS_PIC:";
/**
* 上传文件
* @param request
* @return
* @throws Exception
*/
@RequestMapping("upload.do")
@ResponseBody
public Object uploadSection(HttpServletRequest request) throws Exception {
String redisKey = request.getHeader("ucanPicId");
if(StringUtils.isEmpty(redisKey)){
return ErrorResponse.newInstance("上传uCanPicId不能为空!!");
}
//上传进度同时_往redis中存进度
List<String> urlList= OssUploadUtil.uploadPicWithProgress(request,GOODS_PIC_BUCKET_NAME,OSS_KEY,U_POS_GOODS_PIC+redisKey,redisService);
JSONObject jsonObject = new JSONObject();
jsonObject.put("url","http://"+urlList.get(0));
return SuccessResponse.newInstance(jsonObject);
}
/**
* 获取实时长传进度
* @return
*/
@RequestMapping ("percent.do")
public Object getUploadPercent(@RequestBody JSONObject jsonObject){
String uCanPicId = Objects.isNull(jsonObject.get("ucanPicId")) ? "":jsonObject.get("ucanPicId").toString();
if(StringUtils.isEmpty(uCanPicId)){
return ErrorResponse.newInstance("上传uCanPicId不能为空!!");
}
String redisKey = U_POS_GOODS_PIC+uCanPicId;
int percent = redisService.get(redisKey) == null ? 0: Integer.valueOf(redisService.get(redisKey).toString()).intValue();
//避免死循环请求,每次请求,如果上传进度是0,则加一,当连续调用20次依然为0的时候则返回异常
String countKey = redisKey+"_COUNT";
if(percent == 0){
redisService.incrementBy(countKey,1L);
}
int count = redisService.get(countKey) == null ? 0: Integer.valueOf(redisService.get(countKey).toString()).intValue();
if(count > 20){
return ErrorResponse.newInstance("上传异常,进度为0!!!");
}
if(percent >= 100){
//上传进度到100的时候——————删除该redis值
redisService.delete(redisKey);
//上传进度到100的时候——————删除该redis值
redisService.delete(countKey);
}
JSONObject result = new JSONObject();
result.put("percent",percent);
return SuccessResponse.newInstance(result);
}
}
所需要的maven依赖:
<!--OSS 阿里对象存储 SDK-->
<dependency>
<groupId>com.aliyun.oss</groupId>
<artifactId>aliyun-sdk-oss</artifactId>
<version>2.8.3</version>
</dependency>
<!--文件上传-->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3</version>
</dependency>
补充:在使用spring boot 上传文件的时候,还需要配置 MultipartResolver,如果是其他项目则可以在xml里配置:
<!-- 定义文件上传解析器 -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- 设定默认编码 -->
<property name="defaultEncoding" value="UTF-8"></property>
<!-- 设定文件上传的最大值为5MB，5*1024*1024 -->
<property name="maxUploadSize" value="5242880"></property>
<!-- 设定文件上传时写入内存的最大值，如果小于这个参数不会生成临时文件，默认为10240 -->
<property name="maxInMemorySize" value="40960"></property>
<!-- 上传文件的临时路径 -->
<property name="uploadTempDir" value="fileUpload/temp"></property>
<!-- 延迟文件解析 -->
<property name="resolveLazily" value="true"/>
</bean>
如果是spring boot 则可以通过下面这种方式注入,两者本质是一样的,只是方式不同:
@Component("multipartResolver")
public class MultipartResolver extends CommonsMultipartResolver {
private int maxUploadSize = 104857600;
private int maxInMemorySize = 4096;
public int getMaxUploadSize() {
return maxUploadSize;
}
public void setMaxUploadSize(int maxUploadSize) {
this.maxUploadSize = maxUploadSize;
}
public int getMaxInMemorySize() {
return maxInMemorySize;
}
@Override
public void setMaxInMemorySize(int maxInMemorySize) {
this.maxInMemorySize = maxInMemorySize;
}
}
补充:
如果有需要可以看一下这位兄弟的写的,我们知道一个用户登录的时候的请求是只有一个唯一的sessionId的,如果是前后端分离的情况下再使用 session 的方式去保存和记录对应的 百分比,那么从用户请求 -----> 到前端服务-----> 后端服务 ,跨域请求的情况下就会导致同一个用户的请求最终传的后端的时候 session 没有保证是唯一的了,所以在这里我使用redis来保存进度,key值是前端传给我的,为了保证key值的唯一性,可以使用用户登录之后的cookies加上当前的时间戳来生成,最终在改张图片上传完成之后再将该key删掉就ok了
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原文链接：https://blog.csdn.net/qq_37107280/article/details/81326738
