Java诊断利器Arthas curl -O https://arthas.aliyun.com/arthas-boot.jar java -jar arthas-boot.jar [arthas@9208]$ thread 1 "main" Id=1 TIMED_WAITING at
[email protected]/java.lang.Thread.sleep(Native Method) at
[email protected]/java.lang.Thread.sleep(Thread.java:339) at
[email protected]/java.util.concurrent.TimeUnit.sleep(TimeUnit.java:446) JVM MEMORY MODEL javax.net.ssl.SSLException: Received fatal alert: protocol_version On Java 1.8 default TLS protocol is v1.2. On Java 1.6 and 1.7 default is obsoleted TLS1.0. I get this error on Java 1.8, because url use old TLS1.0
echo 'export JAVA_TOOL_OPTIONS="-Dhttps.protocols=TLSv1.2"' >> ~/.bashrc source ~/.bashrc 访问可见性 修饰符 类 包 子类 所有人 public 是 是 是 是 protected 是 是 是 否 没有修饰符 是 是 否 否 private 是 否 否 否 方法签名 方法签名包括