获取阿里云OSS预签名URL下载(java)

1,引入依赖

<dependency>
    <groupId>com.aliyun.oss</groupId>
    <artifactId>aliyun-sdk-oss</artifactId>
</dependency>
<!--AliSms-->
<dependency>
    <groupId>com.aliyun</groupId>
    <artifactId>aliyun-java-sdk-core</artifactId>
</dependency>

2，代码 

/**
	 * 获取阿里云OSS预签名URL下载
	 *
	 * @param ossPath oss存放路径
	 */
	public String getOssPreSignatureUrl(String ossPath) {
		OSS ossClient = null;
		try {
			CredentialsProvider credentialsProvider = new DefaultCredentialProvider(access_key, secret_key);
			ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
			clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);
			ossClient = OSSClientBuilder.create().endpoint(endpoint).credentialsProvider(credentialsProvider).clientConfiguration(clientBuilderConfiguration).region(region).build();
			// 设置预签名URL过期时间，单位为毫秒。本示例以设置过期时间为1小时为例。
			Date expiration = new Date(new Date().getTime() + 3600 * 1000L);
			// 生成以GET方法访问的预签名URL。本示例没有额外请求头，其他人可以直接通过浏览器访问相关内容。
			return ossClient.generatePresignedUrl(bucket, ossPath, expiration).toString();
		} catch (Exception e) {
			log.error("阿里云OSS实例获取失败: {}", e.getMessage());
			throw new ServiceException("阿里云OSS预签名URL获取失败！");
		} finally {
			if (ossClient != null) {
				ossClient.shutdown();
			}
		}
	}