是否可以在特定的字节码指令中设置断点？ [英] Is it possible to set breakpoints at a specific bytecode instruction?

问题描述

我使用jdb来远程调试我没有源代码的Java应用程序。此外，应用程序jar被模糊化。

I'm using jdb to remotely debug a Java application of which I don't have the source code. Furthermore, the application jars are obfuscated.

我可以设置方法断点，但是是否可以在方法中的特定字节码指令中设置断点？我的想法是使用像javap这样的反汇编程序来识别有趣的指令。

I can set method breakpoints but, is it possible to set breakpoints at a specific bytecode instruction within a method? The idea I have is to use some disassembler like javap to identify the interesting instructions.

jdb或其他Java调试器可以执行此操作吗？

Can jdb or other Java debugger do this?

推荐答案

你需要行号来断点（我假设已经被删除了）。您可以使用仪器人工地在文件中添加行号，如果需要，您可以在每个指令中断点。

You need line numbers to breakpoint on (something I assume has been removed). You can artificially add line numbers to the file using instrumentation and you will be able to breakpoint at every instruction if you wish.

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