使用
安装SDK
<dependency>
<groupId>com.aliyun.oss</groupId>
<artifactId>aliyun-sdk-oss</artifactId>
<version>3.17.4</version>
</dependency>如果使用的是Java 9及以上的版本，则需要添加JAXB相关依赖。添加JAXB相关依赖示例代码如下：
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.1</version>
</dependency>
<dependency>
<groupId>javax.activation</groupId>
<artifactId>activation</artifactId>
<version>1.1.1</version>
</dependency>
<!-- no more than 2.3.3-->
<dependency>
<groupId>org.glassfish.jaxb</groupId>
<artifactId>jaxb-runtime</artifactId>
<version>2.3.3</version>
</dependency>文件上传
官方提供的文件上传代码
import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.PutObjectRequest;
import com.aliyun.oss.model.PutObjectResult;
import java.io.FileInputStream;
import java.io.InputStream;
public class Demo {
public static void main(String[] args) throws Exception {
// Endpoint以华东1（杭州）为例，其它Region请按实际情况填写。
String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
// 从环境变量中获取访问凭证。运行本代码示例之前，请确保已设置环境变量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。
EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
// 填写Bucket名称，例如examplebucket。
String bucketName = "examplebucket";
// 填写Object完整路径，完整路径中不能包含Bucket名称，例如exampledir/exampleobject.txt。
String objectName = "exampledir/exampleobject.txt";
// 填写本地文件的完整路径，例如D:\\localpath\\examplefile.txt。
// 如果未指定本地路径，则默认从示例程序所属项目对应本地路径中上传文件流。
String filePath= "D:\\localpath\\examplefile.txt";
// 填写Bucket所在地域。以华东1（杭州）为例，Region填写为cn-hangzhou。
String region = "cn-hangzhou";
// 创建OSSClient实例。
ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);
OSS ossClient = OSSClientBuilder.create()
.endpoint(endpoint)
.credentialsProvider(credentialsProvider)
.clientConfiguration(clientBuilderConfiguration)
.region(region)
.build();
try {
InputStream inputStream = new FileInputStream(filePath);
// 创建PutObjectRequest对象。
PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, objectName, inputStream);
// 创建PutObject请求。
PutObjectResult result = ossClient.putObject(putObjectRequest);
} catch (OSSException oe) {
System.out.println("Caught an OSSException, which means your request made it to OSS, "
+ "but was rejected with an error response for some reason.");
System.out.println("Error Message:" + oe.getErrorMessage());
System.out.println("Error Code:" + oe.getErrorCode());
System.out.println("Request ID:" + oe.getRequestId());
System.out.println("Host ID:" + oe.getHostId());
} catch (ClientException ce) {
System.out.println("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.");
System.out.println("Error Message:" + ce.getMessage());
} finally {
if (ossClient != null) {
ossClient.shutdown();
}
}
}
}在以上代码中，需要替换的内容为：
accessKeyId：阿里云账号AccessKey
accessKeySecret：阿里云账号AccessKey对应的秘钥
bucketName：Bucket名称
objectName：对象名称，在Bucket中存储的对象的名称
filePath：文件路径
运行以上程序后，会把本地的文件上传到阿里云OSS服务器上
文件上传工具
在配置文件里加入阿里云OSS配置信息
aliyun:
oss:
endpoint: https://oss-cn-hangzhou.aliyuncs.com
accessKeyId: LTAI4GCH1vX6DKqJWxd6nEuW
accessKeySecret: yBshYweHOpqDuhCArrVHwIiBKpyqSL
bucketName: web-397然后引入阿里云OSS上传文件工具类（由官方的示例代码改造而来）
这里@Component是为了将AliOSSUtils类加入spring的IOC容器中，以便在UploadController中可以使用@Autowired自动创建对象
先创建实体类AliOSSProperties
import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
/*阿里云OSS相关配置*/
@Data
@Component
@ConfigurationProperties(prefix = "aliyun.oss")
public class AliOSSProperties {
//区域
private String endpoint;
//身份ID
private String accessKeyId ;
//身份密钥
private String accessKeySecret ;
//存储空间
private String bucketName;
}再引入阿里云OSS上传文件工具类（由官方的示例代码改造而来）
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.multipart.MultipartFile;
import java.io.IOException;
import java.io.InputStream;
import java.util.UUID;
@Component //当前类对象由Spring创建和管理
public class AliOSSUtils {
//注入配置参数实体类对象
@Autowired
private AliOSSProperties aliOSSProperties;
/**
* 实现上传图片到OSS
*/
public String upload(MultipartFile multipartFile) throws IOException {
// 获取上传的文件的输入流
InputStream inputStream = multipartFile.getInputStream();
// 避免文件覆盖
String originalFilename = multipartFile.getOriginalFilename();
String fileName = UUID.randomUUID().toString() + originalFilename.substring(originalFilename.lastIndexOf("."));
//上传文件到 OSS
OSS ossClient = new OSSClientBuilder().build(aliOSSProperties.getEndpoint(),
aliOSSProperties.getAccessKeyId(), aliOSSProperties.getAccessKeySecret());
ossClient.putObject(aliOSSProperties.getBucketName(), fileName, inputStream);
//文件访问路径
String url =aliOSSProperties.getEndpoint().split("//")[0] + "//" + aliOSSProperties.getBucketName() + "." + aliOSSProperties.getEndpoint().split("//")[1] + "/" + fileName;
// 关闭ossClient
ossClient.shutdown();
return url;// 把上传到oss的路径返回
}
}
UploadController
import com.itheima.pojo.Result;
import com.itheima.utils.AliOSSUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import java.io.IOException;
@Slf4j
@RestController
public class UploadController {
@Autowired
private AliOSSUtils aliOSSUtils;
@PostMapping("/upload")
public Result upload(MultipartFile image) throws IOException {
//调用阿里云OSS工具类，将上传上来的文件存入阿里云
String url = aliOSSUtils.upload(image);
//将图片上传完成后的url返回，用于浏览器回显展示
return Result.success(url);
}
}
