使用IntelliJ设置的断点不在远程自定义java代理的premain中工作 [英] Breakpoint set with IntelliJ not working in premain of remote custom java agent

问题描述

我已经开始实现一个简单的Java代理，它在JVM加载类之前执行一些检测。问题是我需要对这个代理进行一些调试，但到目前为止我尝试的都失败了（我试图远程调试代理但它没有工作）

I've started to implement a simple Java agent that does some instrumentation before a class is loaded by JVM. The thing is I need to do some debugging on this agent, but what I tried so far had failed( I tried to remote debug the agent but it's not working)

I使用IntelliJ和Maven（生成.jar代理）。

I use IntelliJ and Maven( to generate the .jar agent).

所以我的问题：远程调试一个简单的java代理有什么技巧吗？

So my question:Is there any trick to remote debug a simple java agent?

推荐答案

事实证明我有一个演示Java工具的项目，我已经在IntelliJ中测试了调试。断点有效。您可以将其用作参考。

As it turns out I have a project that demos Java instrumentation, which I have tested out debugging in IntelliJ. Breakpoints work. You can use it as a reference.

https ：//github.com/noahlz/weaver-demo

IntelliJ的示例运行/调试配置

Sample run/debug configuration from IntelliJ

，如果您正在远程调试，则可以在可以附加到调试器之前执行premain。尝试在您传递给运行代理程序代码的JVM的debug命令中将 suspend = n 更改为 suspend = y 。这样，它将一直等到你继续使用IntelliJ进行连接。

Also, if you are debugging remotely, the premain might be executing before you can attach to the debugger. Try changing suspend=n to suspend=y in the debug command you are passing to the JVM running the agent code. That way, it will wait until you connect with IntelliJ before proceeding.

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