开发jsapi支付 时。 //1.配制商户号

Config con =new RSAPublicKeyConfig.Builder()

.merchantId(weixinConfig.mchid)

.privateKeyFromPath(weixinConfig.mchprivateKeypath)

.publicKeyFromPath(weixinConfig.wxPubliKeyPath)

.publicKeyId(weixinConfig.wxPublicKeyId)

.merchantSerialNumber(weixinConfig.mchSerialNumber)

.apiV3Key(weixinConfig.apiv3key)

.build();

JsapiServiceExtension jsapiService = new JsapiServiceExtension.Builder().config(con).build();

调用用 JsapiServiceExtension 出现这个错误，java.lang.NoClassDefFoundError: Could not initialize class com.wechat.pay.java.core.http.DefaultHttpClientBuilder