使用Spring Boot加载本机库 [英] Loading native library with Spring Boot

问题描述

我有一个简单的Spring Boot项目，该项目加载本机库.问题是我不知道在运行应用程序时如何指定本机库的路径.

I have a simple Spring Boot project which loads native libraries. The problem is that I have no idea how to specify the path to the native library when running the application.

我读了很多帖子，解释了如何设置java.library.path，但是每一个都会导致

I have read tons of posts explaining how to set java.library.path but every single one leads to

java.lang.UnsatisfiedLinkError: /path/to/lib/libconnector.so: libconnector.so: cannot open shared object file: No such file or directory

如果我从命令行按顺序运行以下两个命令，则该项目有效:

The project works if I run these two commands in a sequence from command line:

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/path/to/lib
./gradlew bootRun

库已加载并可以使用.但是我无法在我的gradle文件中指定库路径.我尝试过

The library is loaded and works. But I am unable to specify the library path in my gradle file. I tried

run {
    systemProperty 'java.library.path', file('/path/to/lib')
}

bootRun {
    systemProperty 'java.library.path', file('/path/to/lib')
}

及其各种变化.还尝试将VM参数添加到我的IDE等，但没有任何效果.有人可以解释我在做什么错吗?

and all sorts of variations of this. Also tried adding VM arguments to my IDE etc. but nothing works. Could someone explain what am I doing wrong?

这是我加载本机库(位于$projectRoot/lib中)的方式:

This is how I load the native library (located in $projectRoot/lib):

static {
        // load connector library
        File lib = new File("lib/" + System.mapLibraryName("connector"));
        System.load(lib.getAbsolutePath());
}

推荐答案

我终于解决了我的问题.运行应用程序时，我应该将LD_LIBRARY_PATH作为环境变量而不是java.library.path作为系统属性传递.

I finally solved my problem. I should be passing LD_LIBRARY_PATH as an environment variable instead of java.library.path as system property when running the application.

以下Gradle修改解决了我的问题:

The following Gradle modification solved my issue:

tasks.withType(JavaExec) {
    environment('LD_LIBRARY_PATH', 'lib')
}

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