使用GraaVM本地映像成功构建Picocli项目，但无法运行

Question

我一直试图让hello world项目为Picocli/GraalVM项目工作。我使用的是运行Montery、Java11和GraalVM 22.3的GraalVM Mac。我跟踪了he文档，但是在尝试运行本机映像时得到了“无与伦比的参数”错误。

该程序运行良好，调用：

java -cp "picocli-4.7.0.jar:FocusStackCLI.jar" FSCLI hello

我的Java代码：

import picocli.CommandLine;
import picocli.CommandLine.Command;
import picocli.CommandLine.Option;
import picocli.CommandLine.Parameters;

@Command(name = "fscli", version = "fscli 1.0", mixinStandardHelpOptions = true)
public class FSCLI implements Runnable{


    @Parameters(paramLabel = "directory", description = "Directory containing images to focus stack")
    private String directory;

    @Override
    public void run(){
        System.out.println(directory);
    }

    public static void main(String[] args) {
        int exitCode = new CommandLine(new FSCLI()).execute(args);
        System.exit(exitCode);
    }
}

我的pom.xml

<?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>org.example</groupId>
    <artifactId>FocusStackCLI</artifactId>
    <version>1.0-SNAPSHOT</version>

    <build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <!-- annotationProcessorPaths requires maven-compiler-plugin version 3.5 or higher -->
            <version>3.8.1</version>
            <configuration>
                <annotationProcessorPaths>
                    <path>
                        <groupId>info.picocli</groupId>
                        <artifactId>picocli-codegen</artifactId>
                        <version>4.7.0</version>
                    </path>
                </annotationProcessorPaths>
            </configuration>
        </plugin>
    </plugins>
    </build>
    <dependencies>
        <dependency>
            <groupId>info.picocli</groupId>
            <artifactId>picocli</artifactId>
            <version>4.7.0</version>
        </dependency>
    </dependencies>

    <properties>
        <maven.compiler.source>11</maven.compiler.source>
        <maven.compiler.target>11</maven.compiler.target>
    </properties>

</project>

通过调用: Note创建本机映像-它不会让我在Mac上静态编译。

native-image -cp picocli-4.6.3.jar -jar FocusStackCLI.jar

现在，当我试图运行这两种方法中的任何一种时，不管有没有争论，

./FocuStackerCLI hello

./FocuStackerCLI FSCLI hello

我知道这个错误：

Unmatched argument at index 0: 'hello'
Usage: picocli.AutoComplete [-hV] [@<filename>...]
Generates a bash completion script for the specified command class.
      [@<filename>...]   One or more argument files containing options.
  -h, --help             Show this help message and exit.
  -V, --version          Print version information and exit.

Exit Codes:
  0   Successful program execution
  1   Usage error: user input for the command was incorrect, e.g., the wrong
        number of arguments, a bad flag, a bad syntax in a parameter, etc.
  2   The specified command script exists (Specify `--force` to overwrite).
  3   The specified completion script exists (Specify `--force` to overwrite).
  4   An exception occurred while generating the completion script.

System Properties:
Set the following system properties to control the exit code of this program:

* `"picocli.autocomplete.systemExitOnSuccess"`
   call `System.exit(0)` when execution completes normally.
* `"picocli.autocomplete.systemExitOnError"`
   call `System.exit(ERROR_CODE)` when an error occurs.

If these system properties are not defined or have value "false", this program
completes without terminating the JVM.

Example
-------
  java -cp "myapp.jar;picocli-4.6.3.jar" \
              picocli.AutoComplete my.pkg.MyClass

我是不是没有正确地运行这个程序或者不正确地配置GraalVM？

Answer 1

我怀疑您需要让本机图像生成器知道您的FLCL类是主要的应用程序类。没有这些信息，本机图像生成器将在所有可用的jar中搜索清单文件，并发现picocli.Autocompletion类是picocli中的一个主类。如果jar没有在清单文件中声明主类，则可以在命令行中指定它。我忘记了这是什么选项，请检查本机图像生成器工具的帮助。