V2.0 SDK 實(shí)現(xiàn)了對(duì)請(qǐng)求參數(shù)的精細(xì)化管理，通過將業(yè)務(wù)邏輯參數(shù)與運(yùn)行時(shí)配置參數(shù)明確劃分，有效降低了用戶在配置過程中的混淆可能性。在超時(shí)配置上，V2.0 SDK 的超時(shí)機(jī)制為 RuntimeOption -> Client 設(shè)置 -> 默認(rèn)，優(yōu)先級(jí)依次降低。默認(rèn)連接超時(shí)為5秒，讀超時(shí)為10秒：

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

public class Sample {
    public static void main(String[] args) throws Exception {
        com.aliyun.credentials.Client credentialClient = new com.aliyun.credentials.Client();
        com.aliyun.teaopenapi.models.Config config = new com.aliyun.teaopenapi.models.Config();
        // 使用Credentials配置憑證。
        config.setCredential(credentialClient);
        config.setRegionId("<regionId>");
        // Client 超時(shí)參數(shù)設(shè)置
        // 連接超時(shí)默認(rèn) 5 * 1000 毫秒
        config.setConnectTimeout(5000);
        // 讀超時(shí)默認(rèn) 10 * 1000 毫秒
        config.setReadTimeout(10000);
        com.aliyun.ecs20140526.Client client = new com.aliyun.ecs20140526.Client(config);

        // 運(yùn)行時(shí)參數(shù)超時(shí)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();
        runtimeOptions.connectTimeout = 5000;
        runtimeOptions.readTimeout = 10000;

        DescribeRegionsRequest describeRegionsRequest = new DescribeRegionsRequest();

        client.describeRegionsWithOptions(describeRegionsRequest, runtimeOptions);
    }
}