springboot 集成支付宝支付的示例代码

 <dependency>
      <groupId>com.alipay.api</groupId>
      <artifactId>alipay-sdk-java</artifactId>
      <version>20170615110434</version>
    </dependency>

    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>fastjson</artifactId>
      <version>1.2.7</version>
    </dependency>

package com.example.pay.config.pay;

import org.springframework.context.annotation.Configuration;

import java.io.FileWriter;
import java.io.IOException;

/**
 * @author ligen
 * @title: AliPayConfig
 * @projectName demo
 * @description:
 * @date 2019/6/1014:20
 */
@Configuration
public class AliPayConfig {

//↓↓↓↓↓↓↓↓↓↓请在这里配置您的基本信息↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓
 //  netapp映射的地址，，，根据自己的需要修改
  private static String neturl = "http://g5kike.natappfree.cc";

  // 应用ID,您的APPID，收款账号既是您的APPID对应支付宝账号 按照我文章图上的信息填写
  public static String app_id = "2016092800619078";

  // 商户私钥，您的PKCS8格式RSA2私钥 刚刚生成的私钥直接复制填写
  public static String merchant_private_key ="粘贴生成的私钥";

  // 支付宝公钥,对应APPID下的支付宝公钥。 按照我文章图上的信息填写支付宝公钥，别填成商户公钥
  public static String alipay_public_key = "粘贴生成的公钥";
  // 服务器异步通知页面路径 需http://格式的完整路径，不能加?id=123这类自定义参数，其实就是你的一个支付完成后返回的页面URL
  public static String notify_url = neturl+"/alipay/notify_url";

  // 页面跳转同步通知页面路径 需http://格式的完整路径，不能加?id=123这类自定义参数，其实就是你的一个支付完成后返回的页面URL
  public static String return_url = neturl+"/alipay/return_url";

  // 签名方式
  public static String sign_type = "RSA2";

  // 字符编码格式
  public static String charset = "utf-8";

  // 支付宝网关
  public static String gatewayUrl = "https://openapi.alipaydev.com/gateway.do";

  // 支付宝网关
  public static String log_path = "C:\\";


//↑↑↑↑↑↑↑↑↑↑请在这里配置您的基本信息↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑

  /**
   * 写日志，方便测试（看网站需求，也可以改成把记录存入数据库）
   * @param sWord 要写入日志里的文本内容
   */
  public static void logResult(String sWord) {
    FileWriter writer = null;
    try {
      writer = new FileWriter(log_path + "alipay_log_" + System.currentTimeMillis()+".txt");
      writer.write(sWord);
    } catch (Exception e) {
      e.printStackTrace();
    } finally {
      if (writer != null) {
        try {
          writer.close();
        } catch (IOException e) {
          e.printStackTrace();
        }
      }
    }
  }
}

package com.example.pay.config.pay;

import com.alibaba.fastjson.JSON;
import com.alipay.api.AlipayApiException;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.example.pay.domain.AlipayVo;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

/**
 * @author ligen
 * @title: AliPayService
 * @projectName demo
 * @description:
 * @date 2019/6/119:11
 */
@Service
public class AliPayService {
  Logger logger = LoggerFactory.getLogger("AliPayService.class");


  @Autowired
  AlipayVo staticVo;

  //  支付服务
  public String aliPay() throws AlipayApiException {

    // 构建支付数据信息
    Map<String, String> data = new HashMap<>();
    data.put("subject", staticVo.getSubject()); //订单标题
    data.put("out_trade_no", new SimpleDateFormat().format(new Date())); //商户订单号,64个字符以内、可包含字母、数字、下划线；需保证在商户端不重复   //此处模拟订单号为时间
    data.put("timeout_express", staticVo.getTimout_express()); //该笔订单允许的最晚付款时间
    data.put("total_amount", staticVo.getTotle_amout()); //订单总金额，单位为元，精确到小数点后两位，取值范围[0.01,100000000]
    data.put("product_code", "FAST_INSTANT_TRADE_PAY"); //销售产品码，商家和支付宝签约的产品码，为固定值QUICK_MSECURITY_PAY


    //构建客户端
    DefaultAlipayClient alipayRsa2Client = new DefaultAlipayClient(
        AliPayConfig.gatewayUrl,
        AliPayConfig.app_id,
        AliPayConfig.merchant_private_key,
        "json",
        AliPayConfig.charset,
        AliPayConfig.alipay_public_key,
        AliPayConfig.sign_type);
//    AlipayTradeAppPayRequest request = new AlipayTradeAppPayRequest();// APP支付
    AlipayTradePagePayRequest request = new AlipayTradePagePayRequest(); // 网页支付
//    AlipayTradeWapPayRequest request = new AlipayTradeWapPayRequest(); //移动h5
    request.setNotifyUrl(AliPayConfig.notify_url);
    request.setReturnUrl(AliPayConfig.return_url);
    request.setBizContent(JSON.toJSONString(data));
    logger.info(JSON.toJSONString(data));
    String response = alipayRsa2Client.pageExecute(request).getBody();
    logger.info(response);
    return response;
  }
}

package com.example.pay.controller;

import com.alipay.api.AlipayApiException;
import com.example.pay.config.pay.AliPayService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

/**

@author ligen
@title: PayController
@projectName demo
@description:
@date 2019/6/1013:25
*/
@Api(tags = “支付宝测试”)
@RestController
public class PayController {

Logger logger = LoggerFactory.getLogger("PayController.class");

@Autowired
AliPayService aliPayService;

@ApiOperation("支付接口")
@RequestMapping(value = "alipay/toPay/{amount}", method = RequestMethod.GET)
public String alipay(@PathVariable(value = "amount") Integer amount) throws AlipayApiException {
  return aliPayService.aliPay(amount);
}

@ApiOperation("支付异步通知接口")
@GetMapping("alipay/notify_url")
public String notifyAlipay() {

  logger.info("----notify-----");
  return " a li pay notify ";
}

@ApiOperation("支付完成以后的回调接口")
@GetMapping("alipay/return_url")
public String returnAlipay() {
  logger.info("----return-----");
  return " a li pay return ";
}
}