[笔记] java - xieyunzi/xieyunzi.github.io GitHub Wiki

启动参数

从 idea ide 的源码 ui 上启动

# run
java "-javaagent:/Applications/IntelliJ IDEA CE.app/Contents/lib/idea_rt.jar=63206:/Applications/IntelliJ IDEA CE.app/Contents/bin" -Dfile.encoding=UTF-8 -classpath "xxx:current-full-path/target/classes:xxx"  com.xxx.ServerApplication

# debug
java -agentlib:jdwp=transport=dt_socket,address=127.0.0.1:63245,suspend=y,server=n -javaagent:$HOME/Library/Caches/IdeaIC2018.2/captureAgent/debugger-agent.jar=file:/private/var/folders/2w/tt1p_4td3yq9xlbl7c2t4jn00000gn/T/capture.props -Dfile.encoding=UTF-8 -classpath "xxx:current-full-path/target/classes:xxx" com.xxx.ServerApplication

• Java Debug Wire Protocol (JDWP)
• 4 free ways to hot-swap code on the JVM

打包的可执行 jar

java -jar target/xxx-1.0-SNAPSHOT.jar

How to view annotation of java classfile via command line?

javap -v java.lang.String | grep -A 2 RuntimeVisibleAnnotations

https://stackoverflow.com/questions/3933119/how-to-view-annotation-of-java-classfile-via-command-line

java

• concepts

  • annotation
  • javac javap
  • lambda
  • aop

• libraries

  • aspectj
  • alibaba.arthas
  • akka (scala)
  • dropwizard.metrics
  • failsafe (retries, circuit breaker, fallback)
  • feign
  • google guava collection
  • tracing
    • opentracing
    • spring cloud sleuth
  • spring framework
  • jetty
  • netty
  • netflix
    • eureka (service registry, middle-tier load balance)
    • ribbon (client load balance)
    • zuul (gateway)
  • vavr
  • resilience4j (hystrix)
  • rxjava
  • zookeeper