<dependency>
    <groupId>com.github.wechatpay-apiv3</groupId>
    <artifactId>wechatpay-java</artifactId>
    <version>0.2.1</version>
</dependency>

调用微信支付方法PrepayResponse response = service.prepay(request); 报异常okhttp3.RequestBody.create(Ljava/lang/String;Lokhttp3/MediaType;)Lokhttp3/RequestBody;