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The BC provider no longer provides for KeyPairGenerator.RSA.

发生报错 使用网路相关框架时发生报错 1 java.lang.AssertionError: java.security.NoSuchAlgorithmException: The BC provider no longer provides an implementation for KeyPairGenerator.RSA. Please see https://android-developers.googleblog.com/2018/03/cryptography-changes-in-android-p.html for more details. 解决方案 在AndroidManifest.xml文件中填写这段代码 仅

java.net.UnknownServiceException: CLEARTEXT communication to 127.0.0.1 not permitted by network security policy

1 2 3 java.net.UnknownServiceException: CLEARTEXT communication to 127.0.0.1 not permitted by network security policy java.net.ConnectException: failed to connect to localhost/127.0.0.1 (port 8080) 以上两个错误 现象 android虚拟机中访问电脑本地url失败 当你启动Tomcat后,在浏览器中输