[API调用-商品/交易] java.lang.NoClassDefFoundError: okhttp3/Connection

自用型应用，使用DefaultYZClient 时 抛出以下异常：
Caused by: java.lang.NoClassDefFoundError: okhttp3/ConnectionPool
        at com.youzan.cloud.open.sdk.core.HttpConfig$HttpConfigBuilder.<init>(HttpConfig.java:185)
        at com.youzan.cloud.open.sdk.core.HttpConfig.builder(HttpConfig.java:99)
        at com.youzan.cloud.open.sdk.core.client.core.DefaultYZClient.<init>(DefaultYZClient.java:29)