支付宝--对账案例小记

想查看对账单：目前支付宝对外的常用对账方式有两种：一种是通过在支付宝后台下载账单的方式来对账；一种是通过调用接口的方式来实现对账。日账单下载：前一日的日账单在第二天生成，月账单下载：每月账单一般会在次月4日或之前生成。在调用完接口以后，支付宝会给你一个URL地址，访问地址就能查看账单。

根据地址下载，便会有对账的csv文件。

代码如下：

package alipay.fund.trans.toaccount;import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.request.AlipayDataDataserviceBillDownloadurlQueryRequest;
import com.alipay.api.response.AlipayDataDataserviceBillDownloadurlQueryResponse;public class transfer {//配置初始化信息参数public static DefaultAlipayClient  alipayclient(){DefaultAlipayClient alipayClient = new DefaultAlipayClient("https://openapi.alipay.com/gateway.do","app_id","your private_key","json","GBK","alipay_public_key","RSA2");return alipayClient;}public static void main(String[] args) {bill_download_url ();}//下载对账单public static void  bill_download_url (){AlipayClient   aliClient=alipayclient();AlipayDataDataserviceBillDownloadurlQueryRequest request = new AlipayDataDataserviceBillDownloadurlQueryRequest();request.setBizContent("{" +"\"bill_type\":\"trade\"," +"\"bill_date\":\"2019-03-08\"" +"  }");AlipayDataDataserviceBillDownloadurlQueryResponse response = null;try {response = aliClient.execute(request);System.out.println(response.getBillDownloadUrl());  } catch (AlipayApiException e) {e.printStackTrace();}if(response.isSuccess()){//调用成功，下载对账文件  String urlStr=response.getBillDownloadUrl();  //指定希望保存的文件路径String filePath = "D:\\Users\\fund_bill.zip";URL url = null;HttpURLConnection httpUrlConnection = null;InputStream fis = null;FileOutputStream fos = null;try {url = new URL(urlStr);httpUrlConnection = (HttpURLConnection) url.openConnection();httpUrlConnection.setConnectTimeout(5 * 1000);httpUrlConnection.setDoInput(true);httpUrlConnection.setDoOutput(true);httpUrlConnection.setUseCaches(false);httpUrlConnection.setRequestMethod("GET");httpUrlConnection.setRequestProperty("CHARSET", "UTF-8");httpUrlConnection.connect();fis = httpUrlConnection.getInputStream();byte[] temp = new byte[1024];int b;fos = new FileOutputStream(new File(filePath));while ((b = fis.read(temp)) != -1) {fos.write(temp, 0, b);fos.flush();}} catch (MalformedURLException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();} finally {try {if(fis!=null) fis.close();if(fos!=null) fos.close();if(httpUrlConnection!=null) httpUrlConnection.disconnect();} catch (IOException e) {e.printStackTrace();}}}}
}

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