JDK从8升级到21的问题集(附案例代码)

Compilation failure: Compilation failure:
#14 4.173 [ERROR] 不再支持源选项 6。请使用 8 或更高版本。
#14 4.173 [ERROR] 不再支持目标选项 6。请使用 8 或更高版本。

<!-- 旧版本编译器配置导致构建失败 -->
<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>3.5</version>
    <configuration>
        <source>1.6</source>
        <target>1.6</target>
    </configuration>
</plugin>

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>3.13.0</version>
    <configuration>
        <release>8</release><!-- 统一使用release参数 -->
    </configuration>
</plugin>

javax.xml.bind.JAXBException:Implementation of JAXB-API has not been found

<dependency>
    <groupId>org.glassfish.jaxb</groupId>
    <artifactId>jaxb-runtime</artifactId>
    <version>4.0.5</version>
</dependency>

java: java.lang.NoSuchFieldError

<dependency>
 <groupId>org.projectlombok</groupId>
 <artifactId>lombok</artifactId>
 <version>1.18.30</version>
</dependency>

Caused by: java.lang.NoSuchMethodError: 'java.lang.String javax.annotation.Resource.lookup()'
at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.<init>(CommonAnnotationBeanPostProcessor.java:664)
at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.lambda$buildResourceMetadata$0(CommonAnnotationBeanPostProcessor.java:395)
at org.springframework.util.ReflectionUtils.doWithLocalFields(ReflectionUtils.java:669)
at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.buildResourceMetadata(CommonAnnotationBeanPostProcessor.java:377)
at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.findResourceMetadata(CommonAnnotationBeanPostProcessor.java:358)
at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessMergedBeanDefinition(CommonAnnotationBeanPostProcessor.java:306)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyMergedBeanDefinitionPostProcessors(AbstractAutowireCapableBeanFactory.java:1116)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594)
... 37 more

<dependency>
    <groupId>jakarta.annotation</groupId>
    <artifactId>jakarta.annotation-api</artifactId>
    <version>1.3.5</version>
</dependency>

<dependency>
    <groupId>javax.annotation</groupId>
    <artifactId>javax.annotation-api</artifactId>
    <version>1.3.2</version>
</dependency>

[ERROR] Unable to make field private int java.text.SimpleDateFormat.serialVersionOnStream accessible

# 启动参数添加模块开放配置
--add-opens java.base/java.text=ALL-UNNAMED
--add-opens java.base/java.lang.reflect=ALL-UNNAMED

export JAVA_OPTS="-Djava.library.path=/usr/local/lib -server -Xmx4096m --add-opens java.base/sun.security.action=ALL-UNNAMED
--add-opens java.base/java.lang=ALL-UNNAMED
--add-opens java.base/java.math=ALL-UNNAMED
--add-opens java.base/java.util=ALL-UNNAMED
--add-opens java.base/sun.util.calendar=ALL-UNNAMED
--add-opens java.base/java.util.concurrent=ALL-UNNAMED
--add-opens java.base/java.util.concurrent.locks=ALL-UNNAMED
--add-opens java.base/java.security=ALL-UNNAMED
--add-opens java.base/jdk.internal.loader=ALL-UNNAMED
--add-opens java.management/com.sun.jmx.mbeanserver=ALL-UNNAMED
--add-opens java.base/java.net=ALL-UNNAMED
--add-opens java.base/sun.nio.ch=ALL-UNNAMED
--add-opens java.management/java.lang.management=ALL-UNNAMED
--add-opens jdk.management/com.sun.management.internal=ALL-UNNAMED
--add-opens java.management/sun.management=ALL-UNNAMED
--add-opens java.base/sun.security.action=ALL-UNNAMED
--add-opens java.base/sun.net.util=ALL-UNNAMED
--add-opens java.base/java.time=ALL-UNNAMED
--add-opens java.base/java.lang.reflect=ALL-UNNAMED
--add-opens java.base/java.io=ALL-UNNAMED"

// JDK8写法（已废弃）
BASE64Encoder encoder =newBASE64Encoder();
String encoded = encoder.encode(data);
// JDK21规范写法
Base64.Encoder encoder =Base64.getEncoder();
String encoded = encoder.encodeToString(data);

Caused by:java.lang.reflect.InaccessibleObjectException: 
Unable to make field private int java.text.SimpleDateFormat.serialVersionOnStream accessible

[ERROR] javax.annotation.Resource exists in both 
jsr250-api-1.0.jar and jakarta.annotation-api-1.3.5.jar

<!-- 统一使用Jakarta标准 -->
<dependency>
    <groupId>jakarta.annotation</groupId>
    <artifactId>jakarta.annotation-api</artifactId>
    <version>2.1.1</version>
</dependency>
<!-- 排除旧版本依赖 -->
<exclusions>
    <exclusion>
        <groupId>javax.annotation</groupId>
        <artifactId>jsr250-api</artifactId>
    </exclusion>
</exclusions>

[ERROR] The plugin org.apache.maven.plugins:maven-compiler-plugin:3.13.0 
requires Maven version 3.6.3

<build>
    <pluginManagement>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.13.0</version>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>3.4.0</version>
            </plugin>
        </plugins>
    </pluginManagement>
</build>

<!--    <bean id ="secApplicationProperties" class="com.jd.security.configsec.spring.config.JDSecurityPropertyFactoryBean">-->
<!--       <property name="ignoreResourceNotFound" value="true" />-->
<!--       <property name="secLocation" value="classpath:important.properties"/>-->
<!--    </bean>-->

List<String> subList = venderCodes.subList(i * batchSize, Math.min(venderCodes.size(), (i + 1) * batchSize));
VendorQueryVo vendorQueryVo = new VendorQueryVo();
vendorQueryVo.setVendorCodes(subList);
// 该接口最多支持100条调用
List<VendorVo> batchVendorNameByVendorCode = vendorBaseInfoService.getBatchVendorNameByVendorCode(vendorQueryVo, I18NParamFactory.getJDI18nParam());