当Java 22遇到 SpringBoot 3.3.0！ - ToB企服应用市场:ToB评测及商务社交产业平台

sdk install java 22-graalce

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sdk default java 22-graalce

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COPY<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>3.3.0-SNAPSHOT</version>
<relativePath/>
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>22</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.graalvm.sdk</groupId>
<artifactId>graal-sdk</artifactId>
<version>23.1.2</version>
</dependency>
<dependency>
<groupId>org.graalvm.nativeimage</groupId>
<artifactId>svm</artifactId>
<version>23.1.2</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.graalvm.buildtools</groupId>
<artifactId>native-maven-plugin</artifactId>
<version>0.10.1</version>
<configuration>
<buildArgs>
<buildArg> --features=com.example.demo.DemoFeature</buildArg>
<buildArg> --enable-native-access=ALL-UNNAMED </buildArg>
<buildArg> -H:+ForeignAPISupport</buildArg>
<buildArg> -H:+UnlockExperimentalVMOptions</buildArg>
<buildArg> --enable-preview</buildArg>
</buildArgs>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<argLine>--enable-preview</argLine>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<enablePreview>true</enablePreview>
</configuration>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<compilerArguments> --enable-preview </compilerArguments>
<jvmArguments> --enable-preview</jvmArguments>
</configuration>
</plugin>
<plugin>
<groupId>io.spring.javaformat</groupId>
<artifactId>spring-javaformat-maven-plugin</artifactId>
<version>0.0.41</version>
<executions>
<execution>
<phase>validate</phase>
<inherited>true</inherited>
<goals>
<goal>validate</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
<repository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<releases>
<enabled>false</enabled>
</releases>
</pository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
<pluginRepository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<releases>
<enabled>false</enabled>
</releases>
</pluginRepository>
</pluginRepositories>
</project>

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package com.example.demo;
@FunctionalInterface
interface LanguageDemonstrationRunner {
void run() throws Throwable;
}

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// ...
@Bean
ApplicationRunner demo(Map<String, LanguageDemonstrationRunner> demos) {
return _ -> demos.forEach((_, demo) -> {
try {
demo.run();
} //
catch (Throwable e) {
throw new RuntimeException(e);
}
});
}
// ...

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package com.example.demo;
import org.springframework.stereotype.Component;
import java.lang.foreign.Arena;
import java.lang.foreign.FunctionDescriptor;
import java.lang.foreign.Linker;
import java.lang.foreign.SymbolLookup;
import java.util.Objects;
import static java.lang.foreign.ValueLayout.ADDRESS;
import static java.lang.foreign.ValueLayout.JAVA_INT;
@Component
class ManualFfi implements LanguageDemonstrationRunner {
// 这是包私有的，因为我们稍后会需要它
static final FunctionDescriptor PRINTF_FUNCTION_DESCRIPTOR =
FunctionDescriptor.of(JAVA_INT, ADDRESS);
private final SymbolLookup symbolLookup;
// SymbolLookup 是 Panama API，但我有一个我正在注入的实现
ManualFfi(SymbolLookup symbolLookup) {
this.symbolLookup = symbolLookup;
}
@Override
public void run() throws Throwable {
var symbolName = "printf";
var nativeLinker = Linker.nativeLinker();
var methodHandle = this.symbolLookup.find(symbolName)
.map(symbolSegment -> nativeLinker.downcallHandle(symbolSegment, PRINTF_FUNCTION_DESCRIPTOR))
.orElse(null);
try (var arena = Arena.ofConfined()) {
var cString = arena.allocateFrom("hello, Panama!");
Objects.requireNonNull(methodHandle).invoke(cString);
}
}
}

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@Bean
SymbolLookup symbolLookup() {
var loaderLookup = SymbolLookup.loaderLookup();
var stdlibLookup = Linker.nativeLinker().defaultLookup();
return name -> loaderLookup.find(name).or(() -> stdlibLookup.find(name));
}

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package com.example.demo;
import org.graalvm.nativeimage.hosted.Feature;
import org.graalvm.nativeimage.hosted.RuntimeForeignAccess;
import static com.example.demo.ManualFfi.PRINTF_FUNCTION_DESCRIPTOR;
public class DemoFeature implements Feature {
@Override
public void duringSetup(DuringSetupAccess access) {
// 这是唯一重要的一行。注意：我们正在分享
// 我们稍早从 ManualFfi bean 中的 PRINTF_FUNCTION_DESCRIPTOR。
RuntimeForeignAccess.registerForDowncall(PRINTF_FUNCTION_DESCRIPTOR);
}
}

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<plugin>
<groupId>org.graalvm.buildtools</groupId>
<artifactId>native-maven-plugin</artifactId>
<version>0.10.1</version>
<configuration>
<buildArgs>
<buildArg>--features=com.example.demo.DemoFeature</buildArg>
<buildArg>--enable-native-access=ALL-UNNAMED</buildArg>
<buildArg>-H:+ForeignAPISupport</buildArg>
<buildArg>-H:+UnlockExperimentalVMOptions</buildArg>
<buildArg>--enable-preview</buildArg>
</buildArgs>
</configuration>
</plugin>

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#!/usr/bin/env bash
LINUX=https://download.java.net/java/early_access/jextract/22/3/openjdk-22-jextract+3-13_linux-x64_bin.tar.gz
MACOS=https://download.java.net/java/early_access/jextract/22/3/openjdk-22-jextract+3-13_macos-x64_bin.tar.gz
OS=$(uname)
DL=""
STDIO=""
if [ "$OS" = "Darwin" ]; then
DL="$MACOS"
STDIO=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/stdio.h
elif [ "$OS" = "Linux" ]; then
DL=$LINUX
STDIO=/usr/include/stdio.h
else
echo "Are you running on Windows? This might work inside the Windows Subsystem for Linux, but I haven't tried it yet.."
fi
LOCAL_TGZ=tmp/jextract.tgz
REMOTE_TGZ=$DL
JEXTRACT_HOME=jextract-22
mkdir -p "$(
dirname $LOCAL_TGZ )"
wget -O $LOCAL_TGZ $REMOTE_TGZ
tar -zxf "$LOCAL_TGZ" -C .
export PATH=$PATH:$JEXTRACT_HOME/bin
jextract --output src/main/java -t com.example.stdio $STDIO

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