SSL握手异常：sun.security.validator.ValidatorException: PKIX路径构建失败 Flutter

Question

我正在学习Flutter。Flutter默认应用在Web上运行良好，但在Android模拟器上显示以下错误。我查看了互联网上的解决方案，但对我没有起作用。

我尝试了以下解决方案。

解决方案1：切换到智能手机网络

解决方案2：从gradle-wrapper属性的分发URL中将https替换为http。 distributionUrl=http\：//services.gradle.org/distributions/gradle-7.4-all.zip

解决方案3：从http://jcenter.bintray.com/下载ssl证书并添加到信任库。

解决方案4：在gradle.properties中添加以下代码行

systemProp.javax.net.ssl.trustStore=[PATH_TO_TRUST_STORE]
systemProp.javax.net.ssl.trustStorePassword=[PASSWORD] (changeit)

Exception in thread "main" javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    at java.base/sun.security.ssl.Alert.createSSLException(Alert.java:131)
    at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:349)
    at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:292)
    at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:287)
    at java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.checkServerCerts(CertificateMessage.java:1357)
    at java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.onConsumeCertificate(CertificateMessage.java:1232)
    at java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.consume(CertificateMessage.java:1175)
    at java.base/sun.security.ssl.SSLHandshake.consume(SSLHandshake.java:392)
    at java.base/sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:443)
    at java.base/sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:421)
    at java.base/sun.security.ssl.TransportContext.dispatch(TransportContext.java:182)
    at java.base/sun.security.ssl.SSLTransport.decode(SSLTransport.java:172)
    at java.base/sun.security.ssl.SSLSocketImpl.decode(SSLSocketImpl.java:1426)
    at java.base/sun.security.ssl.SSLSocketImpl.readHandshakeRecord(SSLSocketImpl.java:1336)
    at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:450)
    at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:421)
    at java.base/sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:572)
    at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:197)
    at java.base/sun.net.www.protocol.http.HttpURLConnection.followRedirect0(HttpURLConnection.java:2787)
    at java.base/sun.net.www.protocol.http.HttpURLConnection.followRedirect(HttpURLConnection.java:2699)
    at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1854)
    at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1520)
    at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:250)
    at org.gradle.wrapper.Download.downloadInternal(Download.java:58)
    at org.gradle.wrapper.Download.download(Download.java:44)
    at org.gradle.wrapper.Install$1.call(Install.java:61)
    at org.gradle.wrapper.Install$1.call(Install.java:48)
    at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAccessManager.java:65)
    at org.gradle.wrapper.Install.createDist(Install.java:48)
    at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:128)
    at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)

我创建了一个普通的Android项目（没有使用Flutter），并在Android模拟器上运行。我正在使用Windows10操作系统。 Android模拟器 - Pixel XL API 30。

- Akanksha Saini

Answer 1

我通过将Gradle更新到最新版本（7.1.2-> 7.1.3）来解决了我的问题。

要更新Gradle，请编辑/{app}/android/build.gradle中的以下行并更改版本。

    dependencies {
        classpath 'com.android.tools.build:gradle:7.1.3'
    }

- Akanksha Saini