AlipayClient alipayClient = new DefaultAlipayClient("https://openapi.alipay.com/gateway.do","app_id","your private_key","json","GBK","alipay_public_key","RSA2");
AlipayOpenMiniVersionOnlineRequest request = new AlipayOpenMiniVersionOnlineRequest();
request.setBizContent("{" +
"  \"app_version\":\"0.0.1\"," +
"  \"bundle_id\":\"com.alipay.alipaywallet\"" +
"}");
request.putOtherTextParam("app_auth_token", "201912BXXXXXX");
AlipayOpenMiniVersionOnlineResponse response = alipayClient.execute(request);
if(response.isSuccess()){
System.out.println("调用成功");
} else {
System.out.println("调用失败");
}

AlipayClient alipayClient = new DefaultAlipayClient("https://openapi.alipay.com/gateway.do","app_id","your private_key","json","GBK","alipay_public_key","RSA2");
AlipayOpenMiniBaseinfoQueryRequest request = new AlipayOpenMiniBaseinfoQueryRequest();
request.putOtherTextParam("app_auth_token", "201912BXXXXXX");
AlipayOpenMiniBaseinfoQueryResponse response = alipayClient.execute(request);
if(response.isSuccess()){
System.out.println("调用成功");
} else {
System.out.println("调用失败");
}