一、准备工作：
1、登陆支付宝开发者中心，申请一个开发者账号。
地址：https://openhome.alipay.com/
2、进入研发服务：
3、点击链接进入工具下载页面：
4、点击下载对应版本的RSA公钥生成器：
5、生成公钥密钥(记录你的应用私钥)：
6、在支付宝配置公钥(点击保存)：
二、搭建demo
1、引入jia包：
com.alipay.sdk alipay-sdk-java4.9.9
2、搭建工程，目录结构如下：
3、编写alipay.properties配置文件
# 您的APPID appId = 2016102200738709 # 商户私钥 privateKey = 您的商户私钥 # 支付宝公钥 publicKey = 您的支付宝公钥 # 服务器异步通知页面路径 ,需要公网能访问到。 notifyUrl = http://公网能访问的路径 # 页面跳转同步通知页面路径 需要公网能访问到。 returnUrl = http://公网能访问的路径 # 签名方式 signType = RSA2 # 字符编码格式 charset = utf-8 # 支付宝网关 gatewayUrl = https://openapi.alipaydev.com/gateway.do # 支付宝网关 logPath = "C:\"
4、编写AlipayBean：
public class AlipayBean {
private String out_trade_no;
private String subject;
private String total_amount;
private String body;
private String timeout_express= "10m";
private String product_code= "FAST_INSTANT_TRADE_PAY";
}
5、编写Alipay：
@Component
public class Alipay {
public String pay(AlipayBean alipayBean) throws AlipayApiException {
// 1、获得初始化的AlipayClient
String serverUrl = AlipayProperties.getGatewayUrl();
String appId = AlipayProperties.getAppId();
String privateKey = AlipayProperties.getPrivateKey();
String format = "json";
String charset = AlipayProperties.getCharset();
String alipayPublicKey = AlipayProperties.getPublicKey();
String signType = AlipayProperties.getSignType();
String returnUrl = AlipayProperties.getReturnUrl();
String notifyUrl = AlipayProperties.getNotifyUrl();
AlipayClient alipayClient = new DefaultAlipayClient(serverUrl, appId, privateKey, format, charset, alipayPublicKey, signType);
// 2、设置请求参数
AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
// 页面跳转同步通知页面路径
alipayRequest.setReturnUrl(returnUrl);
// 服务器异步通知页面路径
alipayRequest.setNotifyUrl(notifyUrl);
// 封装参数
alipayRequest.setBizContent(JSON.toJSonString(alipayBean));
// 3、请求支付宝进行付款，并获取支付结果
String result = alipayClient.pageExecute(alipayRequest).getBody();
// 返回付款信息
return result;
}
}
6、编写AlipayProperties：
@Component
public class AlipayProperties {
public static final String APP_ID = "appId";
public static final String PRIVARY_KEY = "privateKey";
public static final String PUBLIC_KEY = "publicKey";
public static final String NOTIFY_URL = "notifyUrl";
public static final String RETURN_URL = "returnUrl";
public static final String SIGN_TYPE = "signType";
public static final String CHARSET = "charset";
public static final String GATEWAY_URL = "gatewayUrl";
public static final String LOG_PATH = "logPath";
private static Map propertiesMap = new HashMap();
public static void loadProperties() {
// 获得PathMatchingResourcePatternResolver对象
PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
try {
// 加载resource文件(也可以加载resources)
Resource resources = resolver.getResource("classpath:你的alipay.properties文件路径");
PropertiesFactoryBean config = new PropertiesFactoryBean();
config.setLocation(resources);
config.afterPropertiesSet();
Properties prop = config.getObject();
// 循环遍历所有得键值对并且存入集合
for (String key : prop.stringPropertyNames()) {
propertiesMap.put(key, (String) prop.get(key));
}
} catch (Exception e) {
new Exception("配置文件加载失败");
}
}
public static String getKey(String key) {
return propertiesMap.get(key);
}
public static String getAppId() {
return propertiesMap.get(APP_ID);
}
public static String getPrivateKey() {
return propertiesMap.get(PRIVARY_KEY);
}
public static String getPublicKey() {
return propertiesMap.get(PUBLIC_KEY);
}
public static String getNotifyUrl() {
return propertiesMap.get(NOTIFY_URL);
}
public static String getReturnUrl() {
return propertiesMap.get(RETURN_URL);
}
public static String getSignType() {
return propertiesMap.get(SIGN_TYPE);
}
public static String getCharset() {
return propertiesMap.get(CHARSET);
}
public static String getGatewayUrl() {
return propertiesMap.get(GATEWAY_URL);
}
public static String getLogPath() {
return propertiesMap.get(LOG_PATH);
}
}
7、编写PropertiesListener：
@Component
public class PropertiesListener implements ApplicationListener {
@Override
public void onApplicationEvent(ApplicationStartedEvent event) {
AlipayProperties.loadProperties();
}
}
8、编写PayService：
public interface PayService {
String aliPay(AlipayBean alipayBean) throws AlipayApiException;
}
9、编写PayServiceImpl：
@Service
public class PayServiceImpl implements PayService {
@Autowired
private Alipay alipay;
@Override
public String aliPay(AlipayBean alipayBean) throws AlipayApiException {
return alipay.pay(alipayBean);
}
}
10、编写OrderController：
@RestController()
@RequestMapping("order")
public class OrderController {
@Autowired
private PayService payService;
@RequestMapping(value = "alipay")
public String alipay(String outTradeNo, String subject, String totalAmount, String body) throws AlipayApiException {
AlipayBean alipayBean = new AlipayBean();
alipayBean.setOut_trade_no(outTradeNo);
alipayBean.setSubject(subject);
alipayBean.setTotal_amount(totalAmount);
alipayBean.setBody(body);
return payService.aliPay(alipayBean);
}
//支付成功支付宝调用方法：
@RequestMapping(value = "ok")
public void ok(){
System.out.println("付款成功！");
}
}
11、访问页面，输入信息进入支付页面：
12、点击支付宝支付，页面跳转，成功！
总结
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