在 IntelliJ IDEA 的 docker 容器中远程调试 Java 9 [英] Remote debugging Java 9 in a docker container from IntelliJ IDEA

问题描述

我有一个包含此内容的 Dockerfile:

I have a Dockerfile with this content:

FROM openjdk:9

WORKDIR /project

ADD . /project

EXPOSE 5005

我的 docker-compose.yml 看起来像这样:

My docker-compose.yml looks like this:

version: "3.2"
services:
  some-project:
    build: .
    ports:
      - target: 5005
        published: 5005
        protocol: tcp
        mode: host
  command: "java '-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=5005' SomeClass"

当我执行 docker-composer up 时，我看到一条消息正在侦听地址为 5005 的传输 dt_socket".但是当我尝试与 jdb 或 Idea 连接时，我得到java.io.IOException:握手失败 - 连接过早关闭".

When I do docker-composer up I see a message "Listening for transport dt_socket at address: 5005". But when I try to connect with jdb or Idea I get "java.io.IOException: handshake failed - connection prematurally closed".

如果我将 openjdk:9 更改为 openjdk:8，一切正常.但是，我的项目需要 Java 9.

Everything works fine if I change openjdk:9 to openjdk:8. However, I need Java 9 for my project.

推荐答案

从 Java 9 开始，JDWP 套接字连接器默认只接受本地连接.看:http://www.oracle.com/technetwork/java/javase/9​​-notes-3745703.html#JDK-8041435

From Java 9, the JDWP socket connector accept only local connections by default. See: http://www.oracle.com/technetwork/java/javase/9-notes-3745703.html#JDK-8041435

因此，要启用来自外部的调试连接，请将 *: 指定为地址:

So, to enable debug connections from outside, specify *:<port> as address:

-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:5005

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