package com.stylefeng.guns.config.pay;
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import com.stylefeng.guns.config.properties.WxPayProperties;
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import com.wechat.pay.java.core.Config;
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import com.wechat.pay.java.core.RSAAutoCertificateConfig;
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import com.wechat.pay.java.service.payments.app.AppService;
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import lombok.RequiredArgsConstructor;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.core.io.Resource;
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import org.springframework.core.io.ResourceLoader;
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import org.springframework.util.StreamUtils;
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import java.io.IOException;
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import java.io.InputStream;
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import java.nio.charset.StandardCharsets;
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/**
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* 微信支付配置
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*
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* @author Lux
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* @version 1.0.0
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* @since 2026/6/3 14:23
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*/
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@Configuration
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@RequiredArgsConstructor
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public class WechatPayConfig {
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private final WxPayProperties properties;
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private final ResourceLoader resourceLoader;
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@Bean
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public Config wxPayConfig() throws IOException {
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// 1. 读取 classpath 下的私钥文件内容（兼容 classpath: 前缀）
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Resource resource = resourceLoader.getResource(properties.getPrivateKeyPath());
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String privateKey;
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try (InputStream inputStream = resource.getInputStream()) {
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// 使用 Spring 的 StreamUtils 将 InputStream 所有字节读取到 byte[]，兼容 Java 8
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byte[] keyBytes = StreamUtils.copyToByteArray(inputStream);
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privateKey = new String(keyBytes, StandardCharsets.UTF_8);
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}
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// 使用自动更新平台证书的RSA配置(从classpath读取私钥文件)
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return new RSAAutoCertificateConfig.Builder()
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.merchantId(properties.getMchId())
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.privateKey(privateKey)
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.merchantSerialNumber(properties.getMerchantSerialNumber())
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.apiV3Key(properties.getApiV3Key())
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.build();
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}
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@Bean
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public AppService appService(Config wxPayConfig) {
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return new AppService.Builder()
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.config(wxPayConfig)
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.build();
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}
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}
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