业务场景:
如果前端直接上传文件到OSS,势必要暴露令牌,无法精准控制上传内容等,使用临时令牌即可解决这个问题.

先去阿里云后台设置好token,角色,地区等

pom.xml

 <dependency>
    <groupId>com.aliyun.oss</groupId>
    <artifactId>aliyun-sdk-oss</artifactId>
 </dependency>

生成阿里云临时安全令牌（Security Token Service，STS)

@Service
public class OssServicesImpl implements OssServices {

    @Value("${oss.AccessKeyId}")
    private String AccessKeyId;
    @Value("${oss.accessKeySecret}")
    private String accessKeySecret;
    @Value("${oss.roleArn}")
    private String roleArn;
    @Value("${oss.regionId}")
    private String regionId;


    /**
     * 生成临时令牌,用来上传文件到oss
     * @param roleSessionName 用户角色标识符号,格式：^[a-zA-Z0-9\.@\-_]+$ 2-50个字符
     * @return 临时令牌
     */
    @Override
    public AssumeRoleResponse getSTS(String roleSessionName) {

        DefaultProfile profile = DefaultProfile.getProfile(regionId, AccessKeyId, accessKeySecret);
        IAcsClient client = new DefaultAcsClient(profile);
        AssumeRoleRequest request = new AssumeRoleRequest();
        request.setRoleArn(roleArn);


        request.setRoleSessionName(roleSessionName);

        request.setDurationSeconds(1000L); // 设置凭证有效时间

        try {
            return client.getAcsResponse(request);
        } catch (ClientException e) {
            System.out.println("Failed：");
            System.out.println("Error code: " + e.getErrCode());
            System.out.println("Error message: " + e.getErrMsg());
            System.out.println("RequestId: " + e.getRequestId());
        }
        return null;
    }
}