Question

我正在尝试使用我的Spring Boot应用程序运行Java docker映像。我想将其用于API测试，也想收集代码覆盖率。但是我无法使jacocoagent在docker容器中运行。难道我做错了什么？我在某处缺少设置吗？当我不添加代理时，常规的bootJar可以平稳运行。此外，我能够在docker env外部执行相同命令而不会出现问题。因此，这似乎不是Java错误。

这是我的docker-compose文件：

version: '3.7'
services:
  bootJarTestApi:
    image: openjdk:12.0.1-jdk-oracle
    environment:
      - "JAVA_TOOL_OPTIONS=-javaagent:/jacoco-agent/jacocoagent.jar=destfile=/jacoco-report/apiDockerTest.exec,output=file"
    ports:
      - 2020:2020
      - 2021:2021
    volumes:
      - "./build/libs/bootJar.jar:/bootJar.jar"
      - "./build/libs/jacoco-agent/jacocoagent.jar:/jacoco-agent/jacocoagent.jar"
      - "./build/jacoco/:/jacoco-report/"
    entrypoint: ["java", "-jar",
#                 "-javaagent:/jacoco-agent/jacocoagent.jar=destfile=/jacoco-report/apiDockerTest.exec,output=file",
                 "-Dspring.profiles.active=dev",
                 "/bootJar.jar"]

当我尝试运行它时，码头工人说：

bootJarTestApi_1  | Picked up JAVA_TOOL_OPTIONS: -javaagent:/jacoco-agent/jacocoagent.jar=destfile=/jacoco-report/apiDockerTest.exec,output=file
bootJarTestApi_1  | FATAL ERROR in native method: processing of -javaagent failed
bootJarTestApi_1  | mmap failed for CEN and END part of zip file
bootJarTestApi_1  | Unexpected error (103) returned by AddToSystemClassLoaderSearch
bootJarTestApi_1  | Unable to add /jacoco-agent/jacocoagent.jar to system class path - the system class loader does not define the appendToClassPathForInstrumentation method or the method failed
bootJarTestApi_1  | #
bootJarTestApi_1  | # A fatal error has been detected by the Java Runtime Environment:
bootJarTestApi_1  | #
bootJarTestApi_1  | #  SIGSEGV (0xb) at pc=0x00007f85d2728b07, pid=1, tid=7
bootJarTestApi_1  | #
bootJarTestApi_1  | # JRE version: OpenJDK Runtime Environment (12.0.1+12) (build 12.0.1+12)
bootJarTestApi_1  | # Java VM: OpenJDK 64-Bit Server VM (12.0.1+12, mixed mode, sharing, tiered, compressed oops, g1 gc, linux-amd64)
bootJarTestApi_1  | # Problematic frame:
bootJarTestApi_1  | # C  [libc.so.6+0x37b07]  abort+0x297
bootJarTestApi_1  | #
bootJarTestApi_1  | # Core dump will be written. Default location: Core dumps may be processed with "/usr/lib/systemd/systemd-coredump %P %u %g %s %t %c %h %e" (or dumping to //core.1)
bootJarTestApi_1  | #
bootJarTestApi_1  | # An error report file with more information is saved as:
bootJarTestApi_1  | # //hs_err_pid1.log
bootJarTestApi_1  | #
bootJarTestApi_1  | # If you would like to submit a bug report, please visit:
bootJarTestApi_1  | #   http://bugreport.java.com/bugreport/crash.jsp
bootJarTestApi_1  | #
bootJarTestApi_1  | 
bootJarTestApi_1  | [error occurred during error reporting (), id 0xb, SIGSEGV (0xb) at pc=0x00007f85d2728b07]

Answer 1

看起来错误消息中的关键行是

mmap failed for CEN and END part of zip file

在Google中对这一行的搜索显示，它始终与文件系统访问相关，但可能是由许多原因引起的-从错误的OS配置到某些文件系统的奇怪行为以及JVM中的错误。因此，我认为这与特定的代理无关，即与JaCoCo代理无关，并且您应该能够与任何其他代理重现相同的内容。

您可以尝试

不将卷用于代理文件，而用于目录；
完全不使用代理体积，直接将其放入图像中。

Docker容器无法使用Java 12运行Jacoco Agent

1 个答案: