这个是官方文档中的代码，可以看到这里是实现上传一段文字 : “Hello OSS”
import com.aliyun.oss.ClientException;import com.aliyun.oss.OSS;import com.aliyun.oss.OSSClientBuilder;import com.aliyun.oss.OSSException;import java.io.ByteArrayInputStream;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"; // 阿里云账号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用户进行API访问或日常运维，请登录RAM控制台创建RAM用户。 String accessKeyId = "yourAccessKeyId"; String accessKeySecret = "yourAccessKeySecret"; // 填写Bucket名称，例如examplebucket。 String bucketName = "examplebucket"; // 填写Object完整路径，例如exampledir/exampleobject.txt。Object完整路径中不能包含Bucket名称。 String objectName = "exampledir/exampleobject.txt"; // 创建OSSClient实例。 OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret); try { String content = "Hello OSS"; ossClient.putObject(bucketName, objectName, new ByteArrayInputStream(content.getBytes())); } 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ServiceImpl中添加统一的身份认证方法我们参看了官方文档会发现，每个操作OSS的方法都会有以下的身份认证前缀，这个如果每个方法都加上下面的内容，显得代码较冗余。
// 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"; // 阿里云账号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用户进行API访问或日常运维，请登录RAM控制台创建RAM用户。 String accessKeyId = "yourAccessKeyId"; String accessKeySecret = "yourAccessKeySecret"; // 填写Bucket名称，例如examplebucket。 String bucketName = "examplebucket";
所以我们配置下面的代码段，具体的代码可以参看 之前的文章，该方法可以在Bean初始化后进行加载，当然也可以使用一个简单的 非静态代码块来实现。
//首先定义相关的类全局属性//存放endpoint地址 private String endpoint; private String accessKeyId; private String accessKeySecret; private String bucketName; //初始化Bean之后需要进行的操作 @Override public void afterPropertiesSet() throws Exception { Endpoint以杭州为例，其它Region请按实际情况填写。 endpoint = ossEntity.getEndpoint(); 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RAM控制台创建RAM账号。 accessKeyId = ossEntity.getAccessKeyId(); accessKeySecret = ossEntity.getAccessKeySecret(); bucketName = ossEntity.getBucketName(); }
有了以上的定义后，其实可以将 upload 方法写为public String upload(MultipartFile file){ // 填写Object完整路径，例如"avater/test.jpg"。Object完整路径中不能包含Bucket名称。这个路径会在 OSS 后台生成相应的目录和文件 String objectName = "avater/test.jpg"; // 创建OSSClient实例。 OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret); try { //String content = "Hello OSS"; try{ ossClient.putObject(bucketName, objectName, file.getInputStream()); }catch (IOException iOException){ System.out.println("Error Message:" + iOException.getMessage()); } //ossClient.putObject(bucketName, objectName, new ByteArrayInputStream(content.getBytes())); } 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(); } } return "成功"; }
编写Controller层测试代码@Autowiredprivate AliOssService aliOssService;@ApiOperation("Oss上传文件") @PostMapping("/upload") public Result upload(MultipartFile file){ String upload= aliOssService.upload(file); return Result.ok().message(upload); }
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