public String getCallerIdentity()

in solution/solution-cross-account-sts-token/code-example/java/spring-boot/assume-role/sdk-v2/src/main/java/org/example/controller/Controller.java [32:74]
28 lines of code
4 McCabe index (conditional complexity)

    public String getCallerIdentity() {
        try {
            // 跨账号获取临时凭证
            CredentialModel credentialModel = assumeRoleService.createAssumeRoleCredential(roleArn);

            // 调用API，跨账号进行资源操作
            // 请根据您的业务场景，修改为对应的资源操作API
            com.aliyun.teaopenapi.models.Config config = new com.aliyun.teaopenapi.models.Config()
                .setAccessKeyId(credentialModel.getAccessKeyId())
                .setAccessKeySecret(credentialModel.getAccessKeySecret())
                .setSecurityToken(credentialModel.getSecurityToken())
                .setRegionId(regionId);
            com.aliyun.sts20150401.Client stsClient = new com.aliyun.sts20150401.Client(config);
            RuntimeOptions runtimeOptions = new RuntimeOptions()
                // 开启自动重试机制，只会对超时等网络异常进行重试
                .setAutoretry(true)
                // 设置自动重试次数，默认3次
                .setMaxAttempts(3);

            GetCallerIdentityResponse getCallerIdentityResponse = stsClient.getCallerIdentityWithOptions(runtimeOptions);
            return JSON.toJSONString(getCallerIdentityResponse);
        } catch(TeaUnretryableException e) {
            // 此处仅做打印展示，请谨慎对待异常处理，在工程项目中切勿直接忽略异常。
            e.printStackTrace();
            // 打印错误信息
            System.out.println(e.getMessage());
            // 打印请求记录
            System.out.println(e.getLastRequest());
        } catch (TeaException e) {
            // 此处仅做打印展示，请谨慎对待异常处理，在工程项目中切勿直接忽略异常。
            e.printStackTrace();
            // 打印错误码
            System.out.println(e.getCode());
            // 打印错误信息，错误信息中包含 RequestId
            System.out.println(e.getMessage());
            // 打印服务端返回的具体错误内容
            System.out.println(e.getData());
        } catch (Exception e) {
            e.printStackTrace();
        }

        return null;
    }