微信小程序支付教程
Person:
- 微信小程序支付有几种版本,分别是什么,写一个详细教程介绍下
ChatGPT:
- 微信小程序支付主要有两种版本,分别为:JSSDK版本(v1.0)和WeixinJSBridge版本(v2.0)。这两种版本都支持微信支付,但在实现方式和一些功能上有所差异。下面将详细介绍这两种版本的使用方法。
- JSSDK版本(v1.0)
1.1 获取支付参数
首先,你需要与服务器进行通信,获取微信支付所需的参数。这些参数通常包括:appId(小程序ID)、timeStamp(时间戳)、nonceStr(随机字符串)、package(数据包)、signType(签名方式)和paySign(签名)。
1.2 引入微信JSSDK
在小程序页面的js文件中,引入微信JSSDK:
const wxpay = require('path/to/your/wechat_jssdk.js');
1.3 发起支付请求
使用微信支付参数,调用JSSDK中的wx.requestPayment()
方法发起支付请求:
wxpay.wx.requestPayment({timeStamp: timeStamp, // 时间戳nonceStr: nonceStr, // 随机字符串package: packageValue, // 数据包signType: signType, // 签名方式paySign: paySign, // 签名success(res) {// 支付成功后的回调函数console.log("支付成功", res);},fail(err) {// 支付失败后的回调函数console.log("支付失败", err);},complete() {// 支付完成后的回调函数(不论成功或失败)},
});
- WeixinJSBridge版本(v2.0)
2.1 获取支付参数
同样,你需要与服务器进行通信,获取微信支付所需的参数。
2.2 调用WeixinJSBridge发起支付请求
在小程序页面的js文件中,调用WeixinJSBridge的invoke()
方法发起支付请求:
if (typeof WeixinJSBridge == "undefined") {if (document.addEventListener) {document.addEventListener("WeixinJSBridgeReady", onBridgeReady, false);} else if (document.attachEvent) {document.attachEvent("WeixinJSBridgeReady", onBridgeReady);document.attachEvent("onWeixinJSBridgeReady", onBridgeReady);}
} else {onBridgeReady();
}function onBridgeReady() {WeixinJSBridge.invoke("getBrandWCPayRequest",{appId: appId, // 小程序IDtimeStamp: timeStamp, // 时间戳nonceStr: nonceStr, // 随机字符串package: packageValue, // 数据包signType: signType, // 签名方式paySign: paySign, // 签名},function (res) {if (res.err_msg == "get_brand_wcpay_request:ok") {// 支付成功后的回调函数console.log("支付成功", res);} else if (res.err_msg == "get_brand_wcpay_request:cancel") {// 支付取消后的回调函数console.log("支付取消", res);} else {
Person:
- 继续
ChatGPT:
// 支付失败后的回调函数console.log("支付失败", res);}
}
);
}
这就是微信小程序支付的两种版本及其使用方法。根据你的项目需求和偏好,可以选择合适的版本进行支付功能的实现。同时,不论使用哪种版本,都要确保与后端服务器的通信安全,以保证支付过程的顺利进行。
Person:
- 用Java如何实现,不要用官方的demo和api
ChatGPT:
- 在Java中实现微信小程序支付,你需要完成以下步骤:
- 创建Maven项目并添加依赖
创建一个Maven项目,并在pom.xml
文件中添加以下依赖:
<dependencies><dependency><groupId>com.github.binarywang</groupId><artifactId>wx-java-miniapp</artifactId><version>4.2.0</version></dependency><dependency><groupId>com.github.binarywang</groupId><artifactId>wx-java-common</artifactId><version>4.2.0</version></dependency>
</dependencies>
- 配置微信支付参数
在src/main/resources
目录下创建一个名为wxpay.properties
的配置文件,并添加以下内容:
wx.miniapp.appid=你的小程序ID
wx.miniapp.secret=你的小程序密钥
wx.miniapp.token=你的token
wx.miniapp.aesKey=你的消息加解密密钥
wx.pay.mchId=你的商户ID
wx.pay.mchKey=你的商户密钥
wx.pay.notifyUrl=你的支付回调URL
- 初始化WxMaService和WxPayService
在项目中创建一个名为WxConfig
的配置类,用于初始化WxMaService
和WxPayService
:
import me.chanjar.weixin.common.util.crypto.WxCryptUtil;
import me.chanjar.weixin.miniapp.api.WxMaService;
import me.chanjar.weixin.miniapp.api.impl.WxMaServiceImpl;
import me.chanjar.weixin.miniapp.config.impl.WxMaDefaultConfigImpl;
import me.chanjar.weixin.mp.config.impl.WxPayDefaultConfigImpl;
import me.chanjar.weixin.pay.api.WxPayService;
import me.chanjar.weixin.pay.api.impl.WxPayServiceImpl;import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;public class WxConfig {private static WxMaService wxMaService;private static WxPayService wxPayService;static {Properties prop = new Properties();try (InputStream is = WxConfig.class.getClassLoader().getResourceAsStream("wxpay.properties")) {prop.load(is);} catch (IOException e) {e.printStackTrace();}WxMaDefaultConfigImpl wxMaConfig = new WxMaDefaultConfigImpl();wxMaConfig.setAppid(prop.getProperty("wx.miniapp.appid"));wxMaConfig.setSecret(prop.getProperty("wx.miniapp.secret"));wxMaConfig.setToken(prop.getProperty("wx.miniapp.token"));wxMaConfig.setAesKey(prop.getProperty("wx.miniapp.aesKey"));wxMaService = new WxMaServiceImpl();wxMaService.setWxMaConfig(wxMaConfig);WxPayDefaultConfigImpl wxPayConfig = new WxPayDefaultConfigImpl();wxPayConfig.setAppId(prop.getProperty("wx.miniapp.appid"));wxPayConfig.setMchId(prop.getProperty("wx.pay.mchId"));wxPayConfig.setMchKey(prop.getProperty("wx.pay.mchKey"));wxPayConfig.setNotifyUrl(prop.getProperty("wx.pay.notifyUrl"));wxPayService = new WxPayServiceImpl();wxPayService.setConfig(wxPayConfig);}public static WxMaService getWxMaService() {return
Person:
- 继续
ChatGPT:
wxMaService;
}public static WxPayService getWxPayService() {return wxPayService;
}
}
4. 创建支付接口
创建一个名为`WxPayController`的控制器类,用于处理支付请求:
```java
import com.github.binarywang.wxpay.bean.order.WxPayUnifiedOrderRequest;
import com.github.binarywang.wxpay.bean.order.WxPayUnifiedOrderResult;
import com.github.binarywang.wxpay.exception.WxPayException;
import me.chanjar.weixin.miniapp.api.WxMaService;import java.math.BigDecimal;
import java.util.HashMap;
import java.util.Map;public class WxPayController {private WxMaService wxMaService = WxConfig.getWxMaService();private WxPayService wxPayService = WxConfig.getWxPayService();public Map<String, String> unifiedOrder(String openId, BigDecimal amount, String body) {WxPayUnifiedOrderRequest orderRequest = new WxPayUnifiedOrderRequest();orderRequest.setBody(body);orderRequest.setOutTradeNo(generateOutTradeNo()); // 生成订单号orderRequest.setTotalFee(amount.multiply(new BigDecimal(100)).intValue()); // 转换为分orderRequest.setSpbillCreateIp("123.12.12.123");orderRequest.setNotifyUrl(wxPayService.getConfig().getNotifyUrl());orderRequest.setTradeType("JSAPI");orderRequest.setOpenid(openId);try {WxPayUnifiedOrderResult orderResult = wxPayService.unifiedOrder(orderRequest);Map<String, String> resultMap = new HashMap<>();resultMap.put("appId", orderResult.getAppid());resultMap.put("timeStamp", String.valueOf(System.currentTimeMillis() / 1000));resultMap.put("nonceStr", orderResult.getNonceStr());resultMap.put("package", "prepay_id=" + orderResult.getPrepayId());resultMap.put("signType", "MD5");String sign = wxPayService.createSign(resultMap);resultMap.put("paySign", sign);return resultMap;} catch (WxPayException e) {e.printStackTrace();return null;}}// 生成订单号private String generateOutTradeNo() {return String.valueOf(System.currentTimeMillis());}
}
- 调用接口
在你的应用程序中,调用WxPayController
中的unifiedOrder()
方法发起支付请求:
WxPayController wxPayController = new WxPayController();
String openId = "用户的OpenID";
BigDecimal amount = new BigDecimal("0.01"); // 支付金额,单位为元
String body = "订单描述";
Map<String, String> resultMap = wxPayController.unifiedOrder(openId, amount, body);// 将resultMap返回给小程序端,用于调用支付接口
注意:本示例仅用于演示目的。在实际开发中,请确保所有敏感信息和业务逻辑得到妥善处理。同时,你需要根据实际需求实现支付回调接口,并处理订单状态的更新。
Person:
- 不依赖上面的Pom 用Java实现一个
ChatGPT:
- 若你不想依赖上述提供的依赖,你可以自行实现一些核心功能,例如签名生成、请求发送等。以下是一个简化版的微信小程序支付实现:
- 创建一个Java项目,并添加Gson库(用于处理JSON数据):
在项目的build.gradle
文件中添加以下依赖:
dependencies {implementation 'com.google.code.gson:gson:2.8.9'
}
- 创建一个名为
WxPayUtil
的工具类,用于生成签名和发送请求:
import com.google.gson.Gson;
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import javax.xml.bind.DatatypeConverter;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.util.HashMap;
import java.util.Map;public class WxPayUtil {public static String generateSign(Map<String, String> params, String apiKey) {StringBuilder sb = new StringBuilder();params.entrySet().stream().sorted(Map.Entry.comparingByKey()).forEach(entry -> {sb.append(entry.getKey()).append('=').append(entry.getValue()).append('&');});sb.append("key=").append(apiKey);return md5(sb.toString()).toUpperCase();}public static String sendPost(String urlStr, String xmlStr) {try {URL url = new URL(urlStr);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setRequestMethod("POST");conn.setDoOutput(true);conn.setDoInput(true);conn.setUseCaches(false);conn.setRequestProperty("Content-Type", "application/xml");OutputStream outputStream = conn.getOutputStream();DataOutputStream dataOutputStream = new DataOutputStream(outputStream);dataOutputStream.writeBytes(xmlStr);dataOutputStream.flush();dataOutputStream.close();BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream(), StandardCharsets.UTF_8));StringBuilder result = new StringBuilder();String line;while ((line = reader.readLine()) != null) {result.append(line);}reader.close();conn.disconnect();return result.toString();} catch (Exception e) {e.printStackTrace();return null;}}public static String mapToXml(Map<String, String> paramMap) {StringBuilder sb = new StringBuilder("<xml>");paramMap.forEach((key, value) -> sb.append("<").append(key).append("><![CDATA[").append(value).append("]]></").append(key).append(">"));sb.append("</xml>");return sb.toString();}public static Map<String, String> xmlToMap(String xml) {try {Gson gson = new Gson();Map<String, String> map = gson.fromJson(xml, HashMap.class);return map;} catch (Exception e) {e.printStackTrace();return null;}}private static String md5(String s) {try {MessageDigest md = MessageDigest.getInstance("MD5");byte[] digest = md.digest(s.getBytes(StandardCharsets.UTF_8));return DatatypeConverter.printHexBinary(digest).toLowerCase();} catch (Exception e) {e.printStackTrace();return null;}}
}
- 创建一个名为
WxPayController
的控制器类,用于处理支付请求:
import java.math.BigDecimal;
import java.util.HashMap;
import java.util.Map;
import
Person:
- 继续
ChatGPT:
- java.util.UUID;
public class WxPayController {
private String appId = “你的小程序ID”;
private String mchId = “你的商户ID”;
private String apiKey = “你的商户密钥”;
private String notifyUrl = “你的支付回调URL”;
private String unifiedOrderUrl = "https://api.mch.weixin.qq.com/pay/unifiedorder ";
public Map<String, String> unifiedOrder(String openId, BigDecimal amount, String body) {Map<String, String> params = new HashMap<>();params.put("appid", appId);params.put("mch_id", mchId);params.put("nonce_str", UUID.randomUUID().toString().replaceAll("-", ""));params.put("body", body);params.put("out_trade_no", generateOutTradeNo()); // 生成订单号params.put("total_fee", amount.multiply(new BigDecimal(100)).intValue() + ""); // 转换为分params.put("spbill_create_ip", "123.12.12.123");params.put("notify_url", notifyUrl);params.put("trade_type", "JSAPI");params.put("openid", openId);params.put("sign", WxPayUtil.generateSign(params, apiKey));String responseXml = WxPayUtil.sendPost(unifiedOrderUrl, WxPayUtil.mapToXml(params));Map<String, String> responseMap = WxPayUtil.xmlToMap(responseXml);if ("SUCCESS".equals(responseMap.get("return_code")) && "SUCCESS".equals(responseMap.get("result_code"))) {Map<String, String> resultMap = new HashMap<>();resultMap.put("appId", appId);resultMap.put("timeStamp", String.valueOf(System.currentTimeMillis() / 1000));resultMap.put("nonceStr", responseMap.get("nonce_str"));resultMap.put("package", "prepay_id=" + responseMap.get("prepay_id"));resultMap.put("signType", "MD5");resultMap.put("paySign", WxPayUtil.generateSign(resultMap, apiKey));return resultMap;} else {return null;}
}// 生成订单号
private String generateOutTradeNo() {return String.valueOf(System.currentTimeMillis());
}
}
4. 调用接口
在你的应用程序中,调用`WxPayController`中的`unifiedOrder()`方法发起支付请求:
```java
WxPayController wxPayController = new WxPayController();
String openId = "用户的OpenID";
BigDecimal amount = new BigDecimal("0.01"); // 支付金额,单位为元
String body = "订单描述";
Map<String, String> resultMap = wxPayController.unifiedOrder(openId, amount, body);// 将resultMap返回给小程序端,用于调用支付接口
请注意,本示例仅用于演示目的。在实际开发中,请确保所有敏感信息和业务逻辑得到妥善处理。同时,你需要根据实际需求实现支付回调接口,并处理订单状态的更新。
Person:
- 有V3版本吗
ChatGPT:
- 微信支付V3版本对API进行了升级,采用更严格的签名验证机制。这里给出一个Java实现的微信小程序V3版本支付示例。
- 首先,需要在项目中添加以下依赖:
<dependencies><!-- 引入okhttp3库,用于发送HTTP请求 --><dependency><groupId>com.squareup.okhttp3</groupId><artifactId>okhttp</artifactId><version>4.9.3</version></dependency><!-- 引入gson库,用于处理JSON数据 --><dependency><groupId>com.google.code.gson</groupId><artifactId>gson</artifactId><version>2.8.9</version></dependency>
</dependencies>
- 创建一个名为
WxPayV3Util
的工具类,用于生成签名、构造请求头等。
import okhttp3.Headers;
import okhttp3.MediaType;
import okhttp3.RequestBody;
import okio.Buffer;import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import java.security.GeneralSecurityException;
import java.security.KeyStore;
import java.security.MessageDigest;
import java.security.PrivateKey;
import java.security.Signature;
import java.security.cert.Certificate;
import java.security.cert.CertificateFactory;
import java.time.LocalDateTime;
import java.time.ZoneOffset;
import java.time.format.DateTimeFormatter;
import java.util.Base64;public class WxPayV3Util {public static String generateNonceStr() {return UUID.randomUUID().toString().replace("-", "");}public static String generateTimestamp() {return String.valueOf(LocalDateTime.now().toEpochSecond(ZoneOffset.UTC));}public static String sign(String method, String url, String timestamp, String nonceStr, String body, PrivateKey privateKey) {try {String message = buildMessage(method, url, timestamp, nonceStr, body);Signature signature = Signature.getInstance("SHA256withRSA");signature.initSign(privateKey);signature.update(message.getBytes(StandardCharsets.UTF_8));byte[] signBytes = signature.sign();return Base64.getEncoder().encodeToString(signBytes);} catch (GeneralSecurityException e) {e.printStackTrace();return null;}}public static Headers buildHeaders(String appId, String timestamp, String nonceStr, String sign) {return new Headers.Builder().add("Authorization", "WECHATPAY2-SHA256-RSA2048 mchid=\"" + appId + "\",nonce_str=\"" + nonceStr + "\",timestamp=\"" + timestamp + "\",serial_no=\"" + appId + "\",signature=\"" + sign + "\"").add("Content-Type", "application/json").add("Accept", "application/json").build();}public static RequestBody buildRequestBody(String json) {return RequestBody.create(json, MediaType.get("application/json; charset=utf-8"));}public static PrivateKey getPrivateKeyFromP12(String p12Path, String mchId) {try (InputStream inputStream = new FileInputStream(p12Path)) {KeyStore keyStore = KeyStore.getInstance("PKCS12");keyStore.load(inputStream, mchId.toCharArray());return (PrivateKey) keyStore.getKey("privatekey", mchId.toCharArray());} catch (Exception e) {e.printStackTrace();return null;}}public static String getSerialNoFromCert(String cert
Person:
- 继续
ChatGPT:
- Path) {
try (InputStream inputStream = new FileInputStream(new File(certPath))) {
CertificateFactory cf = CertificateFactory.getInstance(“X.509”);
Certificate certificate = cf.generateCertificate(inputStream);
return getSerialNoFromCertificate(certificate);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
private static String buildMessage(String method, String url, String timestamp, String nonceStr, String body) {return method + "\n"+ url + "\n"+ timestamp + "\n"+ nonceStr + "\n"+ body + "\n";
}private static String getSerialNoFromCertificate(Certificate certificate) {byte[] serialNumber = certificate.getSerialNumber().toByteArray();return Hex.encodeHexString(serialNumber).toUpperCase(Locale.ENGLISH);
}public static String hmacSha256(String data, String key) {try {Mac hmacSha256 = Mac.getInstance("HmacSHA256");SecretKeySpec secretKeySpec = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), "HmacSHA256");hmacSha256.init(secretKeySpec);byte[] bytes = hmacSha256.doFinal(data.getBytes(StandardCharsets.UTF_8));return byteArrayToHexString(bytes);} catch (NoSuchAlgorithmException | InvalidKeyException e) {e.printStackTrace();return null;}
}private static String byteArrayToHexString(byte[] bytes) {StringBuilder sb = new StringBuilder(bytes.length * 2);for (byte b : bytes) {sb.append(String.format("%02x", b));}return sb.toString();
}
}
3. 创建一个名为`WxPayV3Controller`的控制器类,用于处理支付请求:```java
import com.google.gson.Gson;
import okhttp3.*;import java.io.IOException;
import java.math.BigDecimal;
import java.security.PrivateKey;
import java.util.HashMap;
import java.util.Map;public class WxPayV3Controller {private String appId = "你的小程序ID";private String mchId = "你的商户ID";private String apiKey = "你的API密钥";private String privateKeyP12Path = "path/to/your/apiclient_key.p12";private String certPath = "path/to/your/certificate.pem";private String notifyUrl = "你的支付回调URL";private String unifiedOrderUrl = "https://api.mch.weixin.qq.com/v3/pay/transactions/jsapi";public Map<String, String> unifiedOrder(String openId, BigDecimal amount, String body) {OkHttpClient client = new OkHttpClient();Map<String, Object> params = new HashMap<>();params.put("appid", appId);params.put("mchid", mchId);params.put("description", body);params.put("out_trade_no", generateOutTradeNo()); // 生成订单号params.put("notify_url", notifyUrl);params.put("amount", new HashMap<String, Object>() {{put("total", amount.multiply(new BigDecimal(100)).intValue()); // 转换为分put("currency", "CNY");}});params.put("payer", new HashMap<String, Object>() {{put("openid", openId);}});Gson gson = new Gson();String jsonParams = gson.toJson(params);try {PrivateKey privateKey = WxPayV3Util.getPrivateKeyFromP12(privateKeyP12Path, mchId);String nonceStr = WxPayV3Util.generateNonceStr();String timestamp = WxPayV3Util.generate
Person:
- 继续
ChatGPT:
- Timestamp();
String sign = WxPayV3Util.sign(“POST”, unifiedOrderUrl, timestamp, nonceStr, jsonParams, privateKey);
String serialNo = WxPayV3Util.getSerialNoFromCert(certPath);
Headers headers = WxPayV3Util.buildHeaders(serialNo, timestamp, nonceStr, sign);
RequestBody requestBody = WxPayV3Util.buildRequestBody(jsonParams);
Request request = new Request.Builder().url(unifiedOrderUrl).headers(headers).post(requestBody).build();Response response = client.newCall(request).execute();if (response.isSuccessful() && response.body() != null) {String responseBody = response.body().string();Map<String, String> responseMap = gson.fromJson(responseBody, HashMap.class);String prepayId = responseMap.get("prepay_id");Map<String, String> resultMap = new HashMap<>();resultMap.put("appId", appId);resultMap.put("timeStamp", timestamp);resultMap.put("nonceStr", nonceStr);resultMap.put("package", "prepay_id=" + prepayId);resultMap.put("signType", "RSA");String message = appId + "\n"+ timestamp + "\n"+ nonceStr + "\n"+ "prepay_id=" + prepayId + "\n";String paySign = WxPayV3Util.sign("POST", "/pay/partner/transactions/jsapi", timestamp, nonceStr, message, privateKey);resultMap.put("paySign", paySign);return resultMap;} else {return null;}} catch (IOException e) {e.printStackTrace();return null;}
}// 生成订单号
private String generateOutTradeNo() {return String.valueOf(System.currentTimeMillis());
}
}
4. 调用接口
在你的应用程序中,调用`WxPayV3Controller`中的`unifiedOrder()`方法发起支付请求:```java
WxPayV3Controller wxPayV3Controller = new WxPayV3Controller();
String openId = "用户的OpenID";
BigDecimal amount = new BigDecimal("0.01"); // 支付金额,单位为元
String body = "订单描述";
Map<String, String> resultMap = wxPayV3Controller.unifiedOrder(openId, amount, body);// 将resultMap返回给小程序端,用于调用支付接口
请注意,本示例仅用于演示目的。在实际开发中,请确保所有敏感信息和业务逻辑得到妥善处理。同时,你需要根据实际需求实现支付回调接口,并处理订单状态的更新。
Person:
- 按上面的要求用java写一个微信h5的支付接口
ChatGPT:
- 微信H5支付接口的实现与小程序支付接口类似。这里给出一个Java实现的微信H5支付示例,基于V3版本的API。
请确保已经添加了OkHttp
和Gson
依赖。接下来,你可以直接在之前的WxPayV3Controller
类中添加一个新的方法unifiedOrderH5
来实现H5支付:
public Map<String, String> unifiedOrderH5(String userId, BigDecimal amount, String body) {OkHttpClient client = new OkHttpClient();Map<String, Object> params = new HashMap<>();params.put("appid", appId);params.put("mchid", mchId);params.put("description", body);params.put("out_trade_no", generateOutTradeNo()); // 生成订单号params.put("notify_url", notifyUrl);params.put("amount", new HashMap<String, Object>() {{put("total", amount.multiply(new BigDecimal(100)).intValue()); // 转换为分put("currency", "CNY");}});params.put("scene_info", new HashMap<String, Object>() {{put("payer_client_ip", "用户的IP地址");put("h5_info", new HashMap<String, Object>() {{put("type", "Wap");put("wap_url", "https://你的网站域名");put("wap_name", "你的网站名");}});}});Gson gson = new Gson();String jsonParams = gson.toJson(params);try {PrivateKey privateKey = WxPayV3Util.getPrivateKeyFromP12(privateKeyP12Path, mchId);String nonceStr = WxPayV3Util.generateNonceStr();String timestamp = WxPayV3Util.generateTimestamp();String sign = WxPayV3Util.sign("POST", unifiedOrderUrl, timestamp, nonceStr, jsonParams, privateKey);String serialNo = WxPayV3Util.getSerialNoFromCert(certPath);Headers headers = WxPayV3Util.buildHeaders(serialNo, timestamp, nonceStr, sign);RequestBody requestBody = WxPayV3Util.buildRequestBody(jsonParams);Request request = new Request.Builder().url(unifiedOrderUrl).headers(headers).post(requestBody).build();Response response = client.newCall(request).execute();if (response.isSuccessful() && response.body() != null) {String responseBody = response.body().string();Map<String, String> responseMap = gson.fromJson(responseBody, HashMap.class);String h5Url = responseMap.get("h5_url");Map<String, String> resultMap = new HashMap<>();resultMap.put("h5_url", h5Url);return resultMap;} else {return null;}} catch (IOException e) {e.printStackTrace();return null;}
}
在你的应用程序中,调用WxPayV3Controller
中的unifiedOrderH5()
方法发起支付请求:
WxPayV3Controller wxPayV3Controller = new WxPayV3Controller();
String userId = "用户ID";
BigDecimal amount = new BigDecimal("0.01"); // 支付金额,单位为元
String body = "订单描述";
Map<String, String> resultMap = wxPayV3Controller.unifiedOrderH5(userId, amount, body);// 将result
Person:
- 继续
ChatGPT:
- Map中的h5_url返回给前端,前端跳转到该URL以启动微信支付:
String h5Url = resultMap.get("h5_url");// 将h5Url返回给前端,用于跳转到支付页面
前端代码示例(HTML/JavaScript):
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>微信H5支付示例</title><script>function redirectToPayment() {// 假设从后端获取到的h5Urlvar h5Url = "从后端获取的h5_url";window.location.href = h5Url;}</script>
</head>
<body><button onclick="redirectToPayment()">微信支付</button>
</body>
</html>
用户点击支付按钮后,浏览器将跳转到微信支付页面。用户完成支付后,微信会向你的服务器发送支付结果通知。因此,请确保已实现支付回调接口,并处理订单状态的更新。
注意:微信H5支付必须在微信浏览器中发起。如果在其他浏览器中尝试发起H5支付,微信将拒绝请求。此外,请确保你的网站域名已添加到微信支付的合法域名列表中。