阿里支付接口 转账 java 代码

阿里支付接口的验证机制和普通接口不同，采用的是证书验证，使用支付宝开放平台助手 ---> 生成**获取csr文件

公司注意些支付对应的支付宝程序所在的公司的名称。

得到生成好的3个文件

放入对应的文件夹

private String APP_ID = "";

//application private key
private String APP_PRIVATE_KEY = "";

//charset
private String CHARSET = "utf-8";

//sign type
private String SIGN_TYPE = "RSA2";

/**
 * 支付相关接口采用csr方式验证
 *
 * @return
 */
private AlipayClient getClientInstanceByKey() throws AlipayApiException {

    AlipayClient aplipayClient = aliMap.get("client");
    if (aplipayClient == null) {

        CertAlipayRequest certAlipayRequest = new CertAlipayRequest();
        //设置网关地址
        certAlipayRequest.setServerUrl("https://openapi.alipay.com/gateway.do");
        //设置应用Id
        certAlipayRequest.setAppId(APP_ID);
        //设置应用私钥
        certAlipayRequest.setPrivateKey(APP_PRIVATE_KEY);
        //设置请求格式，固定值json
        certAlipayRequest.setFormat("json");
        //设置字符集
        certAlipayRequest.setCharset(CHARSET);
        //设置签名类型
        certAlipayRequest.setSignType(SIGN_TYPE);
        //设置应用公钥证书路径
        certAlipayRequest.setCertPath("/home/crt/appCertPublicKey_xxx.crt");
        //设置支付宝公钥证书路径
        certAlipayRequest.setAlipayPublicCertPath("/home/crt/alipayCertPublicKey_RSA2.crt");
        //设置支付宝根证书路径
        certAlipayRequest.setRootCertPath("/home/crt/alipayRootCert.crt");

        aplipayClient = new DefaultAlipayClient(certAlipayRequest);
        aliMap.put("client", aplipayClient);
    }
    return aplipayClient;
}

/**
 * 支付宝向用户转账
 *
 * @param bizNo   逻辑单号
 * @param amount  转账金额 单位元
 * @param account 支付宝账号
 * @return
 */
public RestResult<Integer> alipay2User(String bizNo, String amount, String account) {
    // 设置请求参数
    AlipayFundTransUniTransferRequest alipayRequest = new AlipayFundTransUniTransferRequest();

    Map<String, String> map = new HashMap<>();
    map.put("out_biz_no", bizNo);
    map.put("trans_amount", amount);
    map.put("product_code", "TRANS_ACCOUNT_NO_PWD");
    map.put("biz_scene", "DIRECT_TRANSFER");
    map.put("order_title", "");
    map.put("remark", ""+amount);
    // 转账账户
    Map<String, String> map2 = new HashMap<>();
    map2.put("identity", account);
    map2.put("identity_type", "ALIPAY_USER_ID");
    map2.put("name", "");

    map.put("payee_info", JSONObject.toJSONString(map2));
    // 转成json格式放入
    String json = JSONObject.toJSONString(map);
    alipayRequest.setBizContent(json);
    AlipayFundTransUniTransferResponse response;
    try {
        response = getClientInstanceByKey().certificateExecute(alipayRequest);
        System.out.println(JSON.toJSONString(response));
        if (response.isSuccess()) {
            return RestResult.wrapSuccessResponse();
        } else {
            log.info("支付失败,bizNo:"+bizNo+",原因："+response.getBody());
            return RestResult.wrapErrorResponse("支付失败");
        }
    } catch (Exception e) {
        e.printStackTrace();
        log.info("支付失败,bizNo:"+bizNo+",异常原因："+e);
        return RestResult.wrapErrorResponse("支付失败");
    }
}

关键就是getClientInstanceByKey().certificateExecute(alipayRequest); ，支付相关接口采用证书验证方式才能通过，支付宝转账的demo有点坑