.

src/weixin/weixin.service.ts

@@ -140,7 +140,9 @@ export class WeixinService {
             const nonceStr = Kits.generateStr()
             const packageStr = `prepay_id=${result.data.prepay_id}`
             const signType = 'RSA'
-            const signStr = [this.weixinConfiguration.appId, timeStamp, nonceStr, packageStr].join('\n')
+            const signStr =
+                [this.weixinConfiguration.appId, timeStamp, nonceStr, packageStr].join(String.fromCharCode(10)) +
+                String.fromCharCode(10)
             const paySign = Kits.sha256WithRsa(signStr, this.privateKey)
             console.log(signStr.replace(/\n/g, '\\n'))
             console.log(paySign)