java实现支付宝支付代码
时间: 2023-05-16 11:05:13 浏览: 125
以下是一个简单的 Java 实现支付宝支付的代码示例:
```
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;
public class Alipay {
// 支付宝网关
private static final String GATEWAY_URL = "https://openapi.alipay.com/gateway.do";
// 应用ID
private static final String APP_ID = "your_app_id";
// 商户私钥
private static final String PRIVATE_KEY = "your_private_key";
// 支付宝公钥
private static final String ALIPAY_PUBLIC_KEY = "alipay_public_key";
// 编码格式
private static final String CHARSET = "UTF-8";
// 签名类型
private static final String SIGN_TYPE = "RSA2";
// 支付宝支付接口
private static final String METHOD = "alipay.trade.page.pay";
// 支付宝回调地址
private static final String NOTIFY_URL = "your_notify_url";
// 订单标题
private static final String SUBJECT = "your_subject";
// 订单金额
private static final String TOTAL_AMOUNT = "your_total_amount";
// 商户订单号
private static final String OUT_TRADE_NO = "your_out_trade_no";
public static void main(String[] args) throws Exception {
// 构造请求参数
Map<String, String> params = new HashMap<>();
params.put("app_id", APP_ID);
params.put("method", METHOD);
params.put("charset", CHARSET);
params.put("sign_type", SIGN_TYPE);
params.put("timestamp", DateUtil.format(new Date(), "yyyy-MM-dd HH:mm:ss"));
params.put("version", "1.0");
params.put("notify_url", NOTIFY_URL);
params.put("return_url", "your_return_url");
params.put("biz_content", "{\"out_trade_no\":\"" + OUT_TRADE_NO + "\","
+ "\"total_amount\":\"" + TOTAL_AMOUNT + "\","
+ "\"subject\":\"" + SUBJECT + "\","
+ "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
// 生成签名
String sign = AlipaySignature.rsaSign(params, PRIVATE_KEY, CHARSET, SIGN_TYPE);
// 将签名加入请求参数
params.put("sign", sign);
// 构造请求参数字符串
String requestParams = buildRequestParams(params);
// 发送请求
String response = HttpUtil.post(GATEWAY_URL, requestParams);
// 处理响应
System.out.println(response);
}
/**
* 构造请求参数字符串
*/
private static String buildRequestParams(Map<String, String> params) throws UnsupportedEncodingException {
StringBuilder sb = new StringBuilder();
for (Map.Entry<String, String> entry : params.entrySet()) {
sb.append(entry.getKey()).append("=").append(URLEncoder.encode(entry.getValue(), CHARSET)).append("&");
}
return sb.substring(0, sb.length() - 1);
}
}
```
请注意,这只是一个简单的示例代码,实际使用中还需要根据具体情况进行调整和完善。