springboot调用微信支付接口代码
时间: 2023-09-07 08:04:04 浏览: 198
### 回答1:
以下是一个使用Spring Boot框架调用微信支付接口的示例代码:
```java
@RestController
public class PaymentController {
@Autowired
private WeChatPaymentService weChatPaymentService;
@PostMapping("/pay")
public String pay(@RequestParam("orderId") String orderId, @RequestParam("amount") int amount) {
// 调用微信支付接口
Map<String, String> result = weChatPaymentService.pay(orderId, amount);
// 处理支付结果
if ("SUCCESS".equals(result.get("return_code")) && "SUCCESS".equals(result.get("result_code"))) {
return "支付成功";
} else {
return "支付失败";
}
}
}
@Service
public class WeChatPaymentService {
@Value("${wechat.appId}")
private String appId;
@Value("${wechat.mchId}")
private String mchId;
@Value("${wechat.key}")
private String key;
@Autowired
private RestTemplate restTemplate;
public Map<String, String> pay(String orderId, int amount) {
// 生成随机字符串
String nonceStr = RandomStringUtils.randomAlphanumeric(32);
// 组装请求参数
SortedMap<String, String> requestParams = new TreeMap<>();
requestParams.put("appid", appId);
requestParams.put("mch_id", mchId);
requestParams.put("nonce_str", nonceStr);
requestParams.put("body", "订单支付");
requestParams.put("out_trade_no", orderId);
requestParams.put("total_fee", String.valueOf(amount));
requestParams.put("spbill_create_ip", "127.0.0.1");
requestParams.put("notify_url", "http://example.com/pay/notify");
requestParams.put("trade_type", "JSAPI");
requestParams.put("openid", "用户的openid");
// 生成签名
String sign = WeChatPaymentUtil.generateSignature(requestParams, key);
requestParams.put("sign", sign);
// 发送请求并解析返回结果
String response = restTemplate.postForObject("https://api.mch.weixin.qq.com/pay/unifiedorder",
WeChatPaymentUtil.mapToXml(requestParams), String.class);
return WeChatPaymentUtil.xmlToMap(response);
}
}
public class WeChatPaymentUtil {
public static String generateSignature(SortedMap<String, String> params, String key) {
StringBuilder sb = new StringBuilder();
for (Map.Entry<String, String> entry : params.entrySet()) {
if (StringUtils.isNotEmpty(entry.getValue()) && !"sign".equals(entry.getKey()) && !"key".equals(entry.getKey())) {
sb.append(entry.getKey()).append("=").append(entry.getValue()).append("&");
}
}
sb.append("key=").append(key);
return DigestUtils.md5Hex(sb.toString()).toUpperCase();
}
public static String mapToXml(Map<String, String> params) {
StringBuilder sb = new StringBuilder("<xml>");
for (Map.Entry<String, String> entry : params.entrySet()) {
if (StringUtils.isNotEmpty(entry.getValue())) {
sb.append("<").append(entry.getKey()).append(">").append(entry.getValue()).append("</").append(entry.getKey()).append(">");
}
}
sb.append("</xml>");
return sb.toString();
}
public static Map<String, String> xmlToMap(String xml) {
Map<String, String> map = new HashMap<>();
try {
Document document = DocumentHelper.parseText(xml);
Element root = document.getRootElement();
List<Element> elements = root.elements();
### 回答2:
SpringBoot调用微信支付接口的代码示例:
1. 首先,需要在SpringBoot的配置文件(例如application.properties或application.yml)中配置微信支付相关的参数,如下所示:
```
wechat.pay.appId=YOUR_APP_ID
wechat.pay.mchId=YOUR_MCH_ID
wechat.pay.appSecret=YOUR_APP_SECRET
wechat.pay.key=YOUR_KEY
wechat.pay.notifyUrl=YOUR_NOTIFY_URL
```
2. 创建一个统一下单的请求对象,包含必要的参数,例如:
```java
public class UnifiedOrderRequest {
private String appid;
private String mch_id;
private String nonce_str;
private String sign;
private String body;
private String out_trade_no;
private int total_fee;
private String spbill_create_ip;
private String notify_url;
private String trade_type;
// 其他可选参数...
// getter和setter方法...
}
```
3. 创建一个统一下单的请求工具类,用于发送请求并获取响应:
```java
@Component
public class UnifiedOrderUtils {
@Autowired
private RestTemplate restTemplate;
public String createUnifiedOrder(UnifiedOrderRequest request) {
// 将请求对象转换为XML格式
String requestXml = convertRequestToXml(request);
// 发送HTTPS POST请求,并获取响应
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_XML);
HttpEntity<String> httpEntity = new HttpEntity<>(requestXml, headers);
ResponseEntity<String> responseEntity = restTemplate.postForEntity("https://api.mch.weixin.qq.com/pay/unifiedorder", httpEntity, String.class);
// 解析响应XML
String responseXml = responseEntity.getBody();
// 解析XML,获取相关信息...
// 返回结果...
}
private String convertRequestToXml(UnifiedOrderRequest request) {
// 将Java对象转换为XML格式...
}
}
```
4. 在使用微信支付的地方,注入统一下单请求工具类,并调用相应的方法:
```java
@RestController
public class PaymentController {
@Autowired
private UnifiedOrderUtils unifiedOrderUtils;
@RequestMapping("/createOrder")
public String createOrder() {
UnifiedOrderRequest request = new UnifiedOrderRequest();
// 设置请求参数...
String result = unifiedOrderUtils.createUnifiedOrder(request);
// 处理结果...
}
}
```
以上就是一个简单的SpringBoot调用微信支付接口的代码示例。需要根据具体的业务逻辑和需求进行相应的参数配置和功能实现。注意,以上代码仅为示例,实际的微信支付接口可能会有不同的参数和逻辑处理。
### 回答3:
Spring Boot是一个开源的Java框架,可用于开发微服务和Web应用程序。要调用微信支付接口,需要添加相应的依赖和配置。
首先,在pom.xml文件中添加以下依赖:
```xml
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</dependency>
<dependency>
<groupId>com.github.wxpay</groupId>
<artifactId>wxpay-sdk</artifactId>
<version>...</version> <!-- 替换为实际的版本号 -->
</dependency>
</dependencies>
```
接下来,在application.properties文件中添加微信支付相关配置:
```properties
wxpay.appId=your_app_id
wxpay.mchId=your_mch_id
wxpay.key=your_api_key
```
请将`your_app_id`、`your_mch_id`和`your_api_key`替换为实际的值,这些值可在微信支付商户平台中找到。
然后,创建一个用于处理微信支付的控制器类,例如:
```java
@RestController
@RequestMapping("/pay")
public class WxPayController {
@Value("${wxpay.appId}")
private String appId;
@Value("${wxpay.mchId}")
private String mchId;
@Value("${wxpay.key}")
private String key;
@PostMapping("/prepay")
public String prepay(@RequestBody PayRequest payRequest) {
// 调用微信支付接口并返回预支付订单信息
WXPay wxpay = new WXPay(new MyWXPayConfig(appId, mchId, key));
Map<String, String> data = new HashMap<>();
data.put("body", payRequest.getBody());
// 添加其他支付参数
// ...
try {
Map<String, String> response = wxpay.unifiedOrder(data);
// 处理支付结果
// ...
return "success";
} catch (Exception e) {
e.printStackTrace();
return "fail";
}
}
}
```
上述代码中的PayRequest是一个自定义的类,用于接收支付请求的参数。
最后,根据实际需求,创建一个继承自WXPayConfig的配置类MyWXPayConfig,并实现相应的方法,例如:
```java
public class MyWXPayConfig extends WXPayConfig {
private String appId;
private String mchId;
private String key;
public MyWXPayConfig(String appId, String mchId, String key) {
this.appId = appId;
this.mchId = mchId;
this.key = key;
}
@Override
public String getAppID() {
return appId;
}
@Override
public String getMchID() {
return mchId;
}
@Override
public String getKey() {
return key;
}
// 其他方法根据实际需要来实现
// ...
}
```
通过上述步骤,就可以在Spring Boot应用中调用微信支付接口了。当调用/pay/prepay接口时,将会根据请求参数调用微信支付接口,并返回相应的支付结果。
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