V2.0 SDK 對(duì) OpenAPI 請(qǐng)求中遇到網(wǎng)絡(luò)問(wèn)題的情況會(huì)進(jìn)行重試，對(duì)于業(yè)務(wù)報(bào)錯(cuò)則不會(huì)重試。在請(qǐng)求中通過(guò)運(yùn)行時(shí)參數(shù)（RuntimeOption）配置重試，優(yōu)先級(jí)為 RuntimeOption > 默認(rèn)；默認(rèn)不會(huì)進(jìn)行重試，如果打開(kāi)重試配置未配置重試次數(shù)，則默認(rèn)最多重試3次：

import com.aliyun.ecs20140526.models.DescribeRegionsRequest;
import com.aliyun.teaopenapi.models.Config;
import com.aliyun.teautil.models.RuntimeOptions;

public class Sample {
public static void main(String[] args) throws Exception {
        Config config = new com.aliyun.teaopenapi.models.Config();
        // 從環(huán)境變量獲取RAM賬號(hào)的AccessKey ID
        config.setAccessKeyId(System.getenv("ALIBABA_CLOUD_ACCESS_KEY_ID"));
        // 從環(huán)境變量獲取RAM賬號(hào)的AccessKey ID
        config.setAccessKeySecret(System.getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET"));
        // 地域ID
        config.setRegionId("<regionId>");
        com.aliyun.ecs20140526.Client client = new com.aliyun.ecs20140526.Client(config);

        // 運(yùn)行時(shí)參數(shù)重試設(shè)置，僅對(duì)使用了該運(yùn)行時(shí)參數(shù)實(shí)例的請(qǐng)求有效
        RuntimeOptions runtimeOptions = new RuntimeOptions();
        // 開(kāi)啟自動(dòng)重試機(jī)制
        runtimeOptions.autoretry = true;
        // 設(shè)置自動(dòng)重試次數(shù)
        runtimeOptions.maxAttempts = 3;

        DescribeRegionsRequest describeRegionsRequest = new DescribeRegionsRequest();

        client.describeRegionsWithOptions(describeRegionsRequest, runtimeOptions);
    }
}