SpringBoot接入支付宝支付的方法步骤

支付宝今年推出了新的转账接口alipay.fund.trans.uni.transfer(升级后安全性更高，功能更加强大) ，老转账接口alipay.fund.trans.toaccount.transfer将不再维护，新老接口的一个区别就是新接口采用的证书验签方式。使用新接口要将sdk版本升级到最新版本，博主升级时最新版本是4.10.97。接下来看集成步骤

1.将支付宝开放平台里下载的3个证书放在resources下面

2.写支付宝支付的配置文件

alipay.properties

alipay.appId=你的应用id
alipay.serverUrl=https://openapi.alipay.com/gateway.do
alipay.privateKey=你的应用私钥
alipay.format=json
alipay.charset=UTF-8
alipay.signType=RSA2
alipay.appCertPath=/cert/appCertPublicKey_2021001164652941.crt
alipay.alipayCertPath=/cert/alipayCertPublicKey_RSA2.crt
alipay.alipayRootCertPath=/cert/alipayRootCert.crt

3.引入pom依赖

<dependency>
 <groupId>com.alipay.sdk</groupId>
 <artifactId>alipay-sdk-java</artifactId>
 <version>4.10.97.ALL</version>
</dependency>

4.将配置信息注入AliPayBean

import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;

@Component
@PropertySource("classpath:/production/alipay.properties")
@ConfigurationProperties(prefix = "alipay")
@Data
public class AliPayBean {
private String appId;
private String privateKey;
private String publicKey;
private String serverUrl;
private String domain;
private String format;
private String charset;
private String signType;
private String appCertPath;
private String alipayCertPath;
private String alipayRootCertPath;

}

5.写配置类

import com.alipay.api.AlipayClient;
import com.alipay.api.CertAlipayRequest;
import com.alipay.api.DefaultAlipayClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.util.FileCopyUtils;

import java.io.InputStream;

@Configuration
public class AliConfig {

@Value("${custom.http.proxyHost}")
private String proxyHost;
@Value("${custom.http.proxyPort}")
private int proxyPort;
@Value("${spring.profiles.active}")
private String activeEnv;

@Autowired
private AliPayBean aliPayBean;

@Bean(name = {"alipayClient"})
public AlipayClient alipayClientService() throws Exception{
 CertAlipayRequest certAlipayRequest = new CertAlipayRequest();
 //设置网关地址
 certAlipayRequest.setServerUrl(aliPayBean.getServerUrl());
 //设置应用Id
 certAlipayRequest.setAppId(aliPayBean.getAppId());
 //设置应用私钥
 certAlipayRequest.setPrivateKey(aliPayBean.getPrivateKey());
 //设置请求格式，固定值json
 certAlipayRequest.setFormat(aliPayBean.getFormat());
 //设置字符集
 certAlipayRequest.setCharset(aliPayBean.getCharset());
 //设置签名类型
 certAlipayRequest.setSignType(aliPayBean.getSignType());
 //如果是生产环境或者预演环境，则使用代理模式
 if ("prod".equals(activeEnv) || "stage".equals(activeEnv) || "test".equals(activeEnv)) {
  //设置应用公钥证书路径
  certAlipayRequest.setCertContent(getCertContentByPath(aliPayBean.getAppCertPath()));
  //设置支付宝公钥证书路径
  certAlipayRequest.setAlipayPublicCertContent(getCertContentByPath(aliPayBean.getAlipayCertPath()));
  //设置支付宝根证书路径
  certAlipayRequest.setRootCertContent(getCertContentByPath(aliPayBean.getAlipayRootCertPath()));
  certAlipayRequest.setProxyHost(proxyHost);
  certAlipayRequest.setProxyPort(proxyPort);

}else {
  //local
  String serverPath = this.getClass().getResource("/").getPath();
  //设置应用公钥证书路径
  certAlipayRequest.setCertPath(serverPath+aliPayBean.getAppCertPath());
  //设置支付宝公钥证书路径
  certAlipayRequest.setAlipayPublicCertPath(serverPath+aliPayBean.getAlipayCertPath());
  //设置支付宝根证书路径
  certAlipayRequest.setRootCertPath(serverPath+aliPayBean.getAlipayRootCertPath());
 }
 return new DefaultAlipayClient(certAlipayRequest);
}
public String getCertContentByPath(String name){
 InputStream inputStream = null;
 String content = null;
 try{
  inputStream = this.getClass().getClassLoader().getResourceAsStream(name);
  content = new String(FileCopyUtils.copyToByteArray(inputStream));
 }catch (Exception e){
  e.printStackTrace();
 }
 return content;
}

}

6.写支付工具类

import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.domain.AlipayTradeAppPayModel;
import com.alipay.api.domain.AlipayTradeQueryModel;
import com.alipay.api.request.AlipayTradeAppPayRequest;
import com.alipay.api.request.AlipayTradeQueryRequest;
import com.alipay.api.response.AlipayTradeAppPayResponse;
import com.alipay.api.response.AlipayTradeQueryResponse;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;
/**
* @description:支付宝工具类
* @Date:2020-08-26
*/
@Slf4j
@Service
public class AliPayUtils {
@Autowired
@Qualifier("alipayClient")
private AlipayClient alipayClient;

/**
 * 交易查询接口
 * @param request
 * @return
 * @throws Exception
 */
public boolean isTradeQuery(AlipayTradeQueryModel model) throws AlipayApiException {
 AlipayTradeQueryRequest request = new AlipayTradeQueryRequest();
 request.setBizModel(model);
 AlipayTradeQueryResponse alipayTradeQueryResponse = alipayClient.certificateExecute(request);
 if(alipayTradeQueryResponse.isSuccess()){
  return true;
 } else {
  return false;
 }
}

/**
 * app支付
 * @param model
 * @param notifyUrl
 * @return
 * @throws AlipayApiException
 */
public String startAppPay(AlipayTradeAppPayModel model, String notifyUrl) throws AlipayApiException {
 AlipayTradeAppPayRequest aliPayRequest = new AlipayTradeAppPayRequest();
 model.setProductCode("QUICK_MSECURITY_PAY");
 aliPayRequest.setNotifyUrl(notifyUrl);
 aliPayRequest.setBizModel(model);
 // 这里和普通的接口调用不同，使用的是sdkExecute
 AlipayTradeAppPayResponse aliResponse = alipayClient.sdkExecute(aliPayRequest);
 return aliResponse.getBody();
}
/**
 * 转账接口
 *
 * @param transferParams
 * @return AlipayFundTransToaccountTransferResponse
 */
 public AlipayFundTransUniTransferResponse doTransferNew(TransferParams transferParams) throws Exception {

String title = (StringUtils.isNotBlank(transferParams.getRemark()) ? transferParams
   .getRemark() : "转账");
 //转账请求入参
 AlipayFundTransUniTransferRequest request = new AlipayFundTransUniTransferRequest();
 //转账参数
 BizContentForUniTransfer bizContent = new BizContentForUniTransfer();
 bizContent.setOut_biz_no(transferParams.getOutBizNo());
 bizContent.setTrans_amount(MathUtil.changeF2Y(Math.abs(Integer.parseInt(transferParams.getAmount()))));
 bizContent.setProduct_code("TRANS_ACCOUNT_NO_PWD");
 bizContent.setBiz_scene("DIRECT_TRANSFER");
 bizContent.setOrder_title(title);
 Participant participant = new Participant();
 participant.setIdentity(transferParams.getPayeeAccount());
 participant.setIdentity_type(transferParams.getPayeeType());
 participant.setName((StringUtils.isNotBlank(transferParams.getPayeeRealName()) ? transferParams
   .getPayeeRealName() : StringUtils.EMPTY));
 bizContent.setPayee_info(participant);
 bizContent.setRemark(title);

request.setBizContent(JSON.toJSONString(bizContent));

//转账请求返回
 AlipayFundTransUniTransferResponse response = null;
 try {
  response = alipayClient.certificateExecute(request);
 } catch (Exception e) {

log.info("doTransfer exception，异常信息：{}", e.toString());

log.info("doTransfer exception，支付宝返回信息：{}", JSONObject.toJSONString(response));

}

log.info("doTransfer,AlipayFundTransUniTransferResponse:{}", JSONObject.toJSONString(response));

return response;
}
}

Tips：转账用到的类

@Data
public class TransferParams {

/**
 * 应用编号
 */
private Long appId;

/**
 * 创建人id
 */
private Long createdBy;

/**
 * 转账业务订单号
 */
private String outBizNo;

/**
 * 收款方识别方式
 */
private String payeeType;

/**
 * 收款方账号，可以是支付宝userId或者支付宝loginId
 */
private String payeeAccount;

/**
 * 转账金额，单位分
 */
private String amount;

/**
 * 付款方名称
 */
private String payerShowName;

/**
 * 收款方名称
 */
private String payeeRealName;

/**
 * 备注
 */
private String remark;

/**
 * 支付宝转账流水号
 */
private String orderId;
}

import lombok.Data;

import java.math.BigDecimal;

/**
* 支付宝转账参数
*/
@Data
public class BizContentForUniTransfer {
/**
 * 业务订单号
 */
private String out_biz_no;

/**
 * 订单总金额，单位为元，精确到小数点后两位，
 */
private BigDecimal trans_amount;

/**
 * 业务产品码，
 * 单笔无密转账到支付宝账户固定为:TRANS_ACCOUNT_NO_PWD；
 * 单笔无密转账到银行卡固定为:TRANS_BANKCARD_NO_PWD;
 * 收发现金红包固定为:STD_RED_PACKET；
 */
private String product_code;

/**
 * 描述特定的业务场景，可传的参数如下：
 * DIRECT_TRANSFER：单笔无密转账到支付宝/银行卡, B2C现金红包;
 * PERSONAL_COLLECTION：C2C现金红包-领红包
 */
private String biz_scene;

/**
 * 转账业务的标题，用于在支付宝用户的账单里显示
 */
private String order_title;

/**
 * 原支付宝业务单号。C2C现金红包-红包领取时，传红包支付时返回的支付宝单号；
 * B2C现金红包、单笔无密转账到支付宝/银行卡不需要该参数。
 */
private String original_order_id;

/**
 * 业务备注
 */
private String remark;

/**
 * 转账业务请求的扩展参数，支持传入的扩展参数如下：
 * 1、sub_biz_scene 子业务场景，红包业务必传，取值REDPACKET，C2C现金红包、B2C现金红包均需传入；
 * 2、withdraw_timeliness为转账到银行卡的预期到账时间，可选（不传入则默认为T1），
 * 取值T0表示预期T+0到账，取值T1表示预期T+1到账，因到账时效受银行机构处理影响，支付宝无法保证一定是T0或者T1到账；
 */
private String business_params;

/**
 * 支付收款对象
 */
private Participant payee_info;
}

@Data
public class Participant {
/**
 * 参与方的唯一标识
 */
private String identity;

/**
 * 参与方的标识类型，目前支持如下类型：
 * 1、ALIPAY_USER_ID 支付宝的会员ID
 * 2、ALIPAY_LOGON_ID：支付宝登录号，支持邮箱和手机号格式
 */
private String identity_type;

/**
 * 参与方真实姓名，如果非空，将校验收款支付宝账号姓名一致性。
 * 当identity_type=ALIPAY_LOGON_ID时，本字段必填。
 */
private String name;
}

来源：https://blog.csdn.net/qq_33556185/article/details/110445827