#java #api_library #java #payment #sdk #wechatpay #wechatpay_apiv3 #weixin #weixin_pay

This Java SDK is designed to help you integrate WeChat Pay APIv3 into your application. Here are the key benefits and how to use it The SDK handles automatic signing and verification of HTTP requests, making it easier to secure your transactions.
- **Business Services** The SDK can automatically update WeChat Pay platform certificates to ensure security.
- **Error Handling** The SDK supports encryption and decryption of sensitive data according to WeChat Pay's rules.

### How to Use
- **Installation**wechatpay-java Set up the configuration with your merchant ID, private key path, merchant serial number, and APIv3 key.
```java
Config config =
new RSAAutoCertificateConfig.Builder()
.merchantId(merchantId)
.privateKeyFromPath(privateKeyPath)
.merchantSerialNumber(merchantSerialNumber)
.apiV3Key(apiV3Key)
.build();
```
- **Making Requests**: Use the configured service to make payment requests, such as prepay for Native Pay.
```java
NativePayService service = new NativePayService.Builder().config(config).build();
PrepayRequest request = new PrepayRequest();
// Set request parameters
PrepayResponse response = service.prepay(request);
```

By using this SDK, you can simplify the integration of WeChat Pay into your application while ensuring security and compliance with WeChat Pay's API rules.

https://github.com/wechatpay-apiv3/wechatpay-java