graalvm native image 试用-CFANZ编程社区

graalvm 提供的native 模式，可以加速应用的启动，不同可以让应用不再依赖jvm 运行时环境，但是
也有一些限制参考 https://github.com/oracle/graal/blob/master/substratevm/LIMITATIONS.md

项目准备

项目结构

├── Dockerfile

├── pom.xml

└── src

├── main

│ ├── java

│ │ └── com

│ │ └── dalong

│ │ └── Application.java

│ └── resources

└── test

└── java

maven pom.xml
代码是一个简单的调用js 的代码，使用了graalvm 的polyglot 特性
同时包含了native-image 的maven plugin 方便生成native 模式的可运行软件

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

<modelVersion>4.0.0</modelVersion>

<groupId>com.dalong</groupId>

<artifactId>js-exec</artifactId>

<version>1.0-SNAPSHOT</version>

<properties>

<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

<encoding>UTF-8</encoding>

<java.version>1.8</java.version>

<maven.compiler.source>1.8</maven.compiler.source>

<maven.compiler.target>1.8</maven.compiler.target>

</properties>

<dependencies>

<dependency>

<groupId>org.graalvm.js</groupId>

<artifactId>js</artifactId>

<version>19.2.1</version>

</dependency>

</dependencies>

<build>

<finalName>native-image-js</finalName>

<plugins>

<plugin>

<groupId>org.apache.maven.plugins</groupId>

<artifactId>maven-jar-plugin</artifactId>

<version>2.4</version>

<configuration>

<archive>

<manifest>

<addClasspath>true</addClasspath>

<classpathPrefix>lib/</classpathPrefix>

<mainClass>com.dalong.Application</mainClass>

</manifest>

</archive>

</configuration>

</plugin>

<plugin>

<groupId>com.oracle.substratevm</groupId>

<artifactId>native-image-maven-plugin</artifactId>

<version>19.2.0.1</version>

<configuration>

<buildArgs>--language:js</buildArgs>

<imageName>${project.artifactId}</imageName>

</configuration>

<executions>

<execution>

<goals>

<goal>native-image</goal>

</goals>

<phase>package</phase>

</execution>

</executions>

</plugin>

</plugins>

</build>

</project>

代码
Application.java

package com.dalong;

import org.graalvm.polyglot.*;

/**

* @author dalong

*/

public class Application {

/**

* main for test graalvm exec js

* @param args

*/

public static void main(String[] args) {

System.out.println("Hello Java!");

try (Context context = Context.create()) {

context.eval("js", "print('Hello JavaScript!');");

dockerfile
注意此构建是通过本机模式生成的（linux），我们也可以使用docker multi stage 的模式构建

FROM debian:9-slim

LABEL maintainer="dalongrong"

LABEL email = "1141591465@qq.com"

COPY target/js-exec /js-exec

CMD [ "/js-exec" ]

构建&&测试

本地构建

注意需要安装graalvm 可以通过sdkman 安装

mvn clean package

效果

[INFO] ImageClasspath Entry: org.graalvm.js:js:jar:19.2.1:compile (file:///Users/dalong/.m2/repository/org/graalvm/js/js/19.2.1/js-19.2.1.jar)

[INFO] ImageClasspath Entry: org.graalvm.regex:regex:jar:19.2.1:compile (file:///Users/dalong/.m2/repository/org/graalvm/regex/regex/19.2.1/regex-19.2.1.jar)

[INFO] ImageClasspath Entry: org.graalvm.truffle:truffle-api:jar:19.2.1:compile (file:///Users/dalong/.m2/repository/org/graalvm/truffle/truffle-api/19.2.1/truffle-api-19.2.1.jar)

[INFO] ImageClasspath Entry: org.graalvm.sdk:graal-sdk:jar:19.2.1:compile (file:///Users/dalong/.m2/repository/org/graalvm/sdk/graal-sdk/19.2.1/graal-sdk-19.2.1.jar)

[INFO] ImageClasspath Entry: org.ow2.asm:asm:jar:6.2.1:compile (file:///Users/dalong/.m2/repository/org/ow2/asm/asm/6.2.1/asm-6.2.1.jar)

[INFO] ImageClasspath Entry: org.ow2.asm:asm-tree:jar:6.2.1:compile (file:///Users/dalong/.m2/repository/org/ow2/asm/asm-tree/6.2.1/asm-tree-6.2.1.jar)

[INFO] ImageClasspath Entry: org.ow2.asm:asm-analysis:jar:6.2.1:compile (file:///Users/dalong/.m2/repository/org/ow2/asm/asm-analysis/6.2.1/asm-analysis-6.2.1.jar)

[INFO] ImageClasspath Entry: org.ow2.asm:asm-commons:jar:6.2.1:compile (file:///Users/dalong/.m2/repository/org/ow2/asm/asm-commons/6.2.1/asm-commons-6.2.1.jar)

[INFO] ImageClasspath Entry: org.ow2.asm:asm-util:jar:6.2.1:compile (file:///Users/dalong/.m2/repository/org/ow2/asm/asm-util/6.2.1/asm-util-6.2.1.jar)

[INFO] ImageClasspath Entry: com.ibm.icu:icu4j:jar:62.1:compile (file:///Users/dalong/.m2/repository/com/ibm/icu/icu4j/62.1/icu4j-62.1.jar)

[INFO] ImageClasspath Entry: com.dalong:js-exec:jar:1.0-SNAPSHOT (file:///Users/dalong/quarkus-cloud-native/quarkus-quickstarts/jsexec/target/native-image-js.jar)

[WARNING] Version mismatch between native-image-maven-plugin (19.2.0.1) and native-image executable (19.2.1)

[INFO] Executing: /Users/dalong/.sdkman/candidates/java/19.2.1-grl/jre/bin/native-image -cp /Users/dalong/.m2/repository/org/graalvm/js/js/19.2.1/js-19.2.1.jar:/Users/dalong/.m2/repository/org/graalvm/regex/regex/19.2.1/regex-19.2.1.jar:/Users/dalong/.m2/repository/org/graalvm/truffle/truffle-api/19.2.1/truffle-api-19.2.1.jar:/Users/dalong/.m2/repository/org/graalvm/sdk/graal-sdk/19.2.1/graal-sdk-19.2.1.jar:/Users/dalong/.m2/repository/org/ow2/asm/asm/6.2.1/asm-6.2.1.jar:/Users/dalong/.m2/repository/org/ow2/asm/asm-tree/6.2.1/asm-tree-6.2.1.jar:/Users/dalong/.m2/repository/org/ow2/asm/asm-analysis/6.2.1/asm-analysis-6.2.1.jar:/Users/dalong/.m2/repository/org/ow2/asm/asm-commons/6.2.1/asm-commons-6.2.1.jar:/Users/dalong/.m2/repository/org/ow2/asm/asm-util/6.2.1/asm-util