接著下文，本文主要描述在對(duì)接過程中踩到的坑有哪些。。

一.錯(cuò)誤列表

1.簽名不通過

報(bào)錯(cuò)“public key verify failed”

{
    "apiName":"",
    "appId":"",
    "certID":"13412652941845540388",
    "checkValid":true,
    "sign":"Q8X2iuf+HIkl9PS/Vmzz+Vt1OjWXPzRrZk84VXE+M0GNLbqp5+wZXypl8Co+gvKA0IlPxCQNOEawbm7coiTo46PgrwErqrD87GiMXN5r57fkgxd4gTmHk/4lnLaxcWomxFmAjFRBDjklb3Ih1QjcEH1akJibyzQI3f3mE8A7TVM1MFRJxD9aRPuwChsb+TrzuyqU0Iut9uVxrxYPulrWwxvB7dBQKr36U0msuax+cOEp0/qraxTD2XrXcOj56jMzyi9un203yluD2gSX5hlDsOgXbHWphjMM64YUgW8LHUlpfLC4t65pgDOGcXbRiJQ2XfXJ3FKyf1oRKPQobPc3ug==",
    "signBlock":"{\"ICBC_API_TIMESTAMP\":\"2021-08-31 16:00:38\",\"ICBC_API_RETMSG\":\"public key verify failed\",\"ICBC_API_RETCODE\":42}",
    "timesTamp":""
}

解決思路：
會(huì)導(dǎo)致兩邊的簽名不一致，除了密鑰對(duì)不一致外，最可能的就是明文不一致了。
而最可能的就是對(duì)空字段的處理，一方算進(jìn)簽名，而另一方忽略了簽名。

最后排查出來是attach字段，請(qǐng)求的時(shí)候賦空值了。

attach(商戶自定義參數(shù)).png

2.掃碼付

{
    "apiName":"",
    "appId":"",
    "certID":"13412652941845540388",
    "checkValid":true,
    "sign":"X/gE8AEmQnzP1TMJYPPNaI7eUsgj4tRJCPxZaRATOKdCClElZ6/nOTq6i2Obgpxdqn1ShSW5/MYjL5HnwJYp0keGHEnDQ9Gs/8ifqYSi96zkOsry+7chW8E9WmN/YWy0kn9W2Yj8QjgW5qXAI0LMAqM7w8M7094W1IM1Dt11P44djqqQoU+GCtspX62WPaEQzD5d5NBeYexhiettFlTYNVVqh8vMRt+ImnPPOaBrk9iewMY1U5wR6gtehAmc9uS9bgkZqULDMPVjMCe2S5uqK98eKFMPXJ2KEDxm83it3YIcr2pS6lqxOSj9PNZBMH/MzOpAEWhJRzAOnbIWdqQMqw==",
    "signBlock":"{\"invokerCode\":\"SUCCESS\",\"response\":{\"appid\":\"\",\"tradeType\":\"NATIVE\",\"prepayId\":\"\"},\"invokerMsg\":\"交易成功\",\"hostRspMsg\":\"數(shù)據(jù)不存在[[UPayInstWxpayMct]參數(shù)不存在，key[12021000000000000366:001:NATIVE]]\",\"ICBC_API_TIMESTAMP\":\"2021-09-02 10:03:01\",\"hostRspCode\":\"B0203\",\"ICBC_API_RETMSG\":\"success\",\"ICBC_API_RETCODE\":0}",
    "timesTamp":""
}

答案是：工行不支持該支付方式了。。。

3.網(wǎng)絡(luò)不可達(dá)（未解決）

不知道怎么回事，本地調(diào)試的時(shí)候出現(xiàn)的。。擔(dān)心線上也會(huì)出現(xiàn)該問題。。。

com.icbc.api.core.ApiFailure: [unknown_exception][io_exception]Connect to web.zj.icbc.com.cn:443 [web.zj.icbc.com.cn/61.129.98.130, web.zj.icbc.com.cn/240e:e5:8001:1600:0:0:0:11d] failed: 網(wǎng)絡(luò)不可達(dá) (connect failed)
    at com.icbc.api.core.ApiClient.execute(ApiClient.java:120)
    ...
        ...
Caused by: com.icbc.api.core.ApiFailure: [io_exception]Connect to web.zj.icbc.com.cn:443 [web.zj.icbc.com.cn/61.129.98.130, web.zj.icbc.com.cn/240e:e5:8001:1600:0:0:0:11d] failed: 網(wǎng)絡(luò)不可達(dá) (connect failed)
    at com.icbc.api.core.HttpClient.doPost(HttpClient.java:207)
    at com.icbc.api.core.ApiClient.execute(ApiClient.java:90)
    ... 80 common frames omitted
Caused by: org.apache.http.conn.HttpHostConnectException: Connect to web.zj.icbc.com.cn:443 [web.zj.icbc.com.cn/61.129.98.130, web.zj.icbc.com.cn/240e:e5:8001:1600:0:0:0:11d] failed: 網(wǎng)絡(luò)不可達(dá) (connect failed)
    at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:156)
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:374)
    at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393)
    at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236)
    at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186)
    at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
    at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
    at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108)
    at com.icbc.api.core.HttpClient.doPost(HttpClient.java:195)
    ... 81 common frames omitted
Caused by: java.net.ConnectException: 網(wǎng)絡(luò)不可達(dá) (connect failed)
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.net.Socket.connect(Socket.java:589)
    at org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:368)
    at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142)
    ... 91 common frames omitted

3.商戶傳入的appid的參數(shù)不正確，請(qǐng)聯(lián)系商戶處理

坑在于，appid字段不是必填項(xiàng)，所以我使用公眾號(hào)支付的時(shí)候，就沒有傳入。而且當(dāng)時(shí)有將我方的appid悉數(shù)讓工行配置好。 另外，需要注意的字段tradeType(交易類型)：JSAPI（公眾號(hào)），JSAPI_MINI（小程序）。也就是說，公眾號(hào)和小程序在jsapi支付方式這塊，是需要區(qū)分的。（這一點(diǎn)也和其他的銀行對(duì)接區(qū)分很大）

字段說明.png

商戶傳入的appid不正確.png