HTTPS方式无法下载

[maxrks]

使用App内下载，设置manifest如下，调用HTTPS下载路径时出错。

android:networkSecurityConfig="@xml/network_security_config"
android:usesCleartextTraffic="true"


<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
    <base-config cleartextTrafficPermitted="true">
        <trust-anchors>
            <certificates src="system" />
        </trust-anchors>
    </base-config>
</network-security-config>

日志错误如下：

E/[UpdateAppUtils]: ----使用FileDownloader下载-------
    pending:soFarBytes(0),totalBytes(0)
E/[UpdateAppUtils]: 下载出错，尝试HTTPURLConnection下载
E/[UpdateAppUtils]: ----使用HttpURLConnection下载----
D/NetworkSecurityConfig: Using Network Security Config from resource network_security_config debugBuild: true
E/[UpdateAppUtils]: HttpURLConnection下载失败：java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
E/[UpdateAppUtils]: error:java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
E/[UpdateAppUtils]: 删除成功

使用浏览器方式下载没问题。