使用 gradle 迁移到 Java 11；不支持的操作异常
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Migrate to Java 11 with gradle; UnsupportedOperationException
提问by Viktor V.
Trying to switch from jdk 10 to 11 and cannot figure out what library invoke this exception:
试图从 jdk 10 切换到 11 并且无法弄清楚哪个库调用了这个异常：
Caused by: org.gradle.api.GradleException: failed to read class file ../../SomeTestFile.class
...
...
Caused by: java.lang.UnsupportedOperationException
at org.objectweb.asm.ClassVisitor.visitNestMemberExperimental(ClassVisitor.java:248)
at org.objectweb.asm.ClassReader.accept(ClassReader.java:651)
at org.objectweb.asm.ClassReader.accept(ClassReader.java:391)
at org.gradle.api.internal.tasks.testing.detection.AbstractTestFrameworkDetector.classVisitor(AbstractTestFrameworkDetector.java:124)
I'm using gradle wrapper(v4.10.2) with the following build.gradle:
我正在使用具有以下内容的 gradle wrapper(v4.10.2) build.gradle：
buildscript {
ext {
springBootVersion = '2.0.5.RELEASE'
schemaDownloadVersion = '1.6'
generateAvroVersion = '0.14.2'
}
repositories {
mavenCentral()
maven { url "https://plugins.gradle.org/m2/" }
maven { url "http://packages.confluent.io/maven/" }
}
dependencies {
classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
classpath("gradle.plugin.com.amit.plugin.download-registry:registry-schema-download-plugin:${schemaDownloadVersion}")
classpath("com.commercehub.gradle.plugin:gradle-avro-plugin:${generateAvroVersion}")
}
}
apply plugin: 'java'
apply plugin: 'jacoco'
apply plugin: 'org.springframework.boot'
apply plugin: 'io.spring.dependency-management'
apply plugin: 'com.amit.plugin.download-registry'
apply plugin: 'com.commercehub.gradle.plugin.avro'
group = 'com.example'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = 11
repositories {
mavenCentral()
}
ext {
springCloudVersion = 'Finchley.RELEASE'
jaxbVersion = '2.3.0'
activationVersion = '1.1.1'
jmockitVersion = '1.43'
lombokVersion = '1.18.2'
}
jacoco {
toolVersion = '0.8.2'
}
dependencies {
compile('org.springframework.cloud:spring-cloud-starter-oauth2')
compile("javax.xml.bind:jaxb-api:${jaxbVersion}")
compile("com.sun.xml.bind:jaxb-core:${jaxbVersion}")
compile("com.sun.xml.bind:jaxb-impl:${jaxbVersion}")
compile("javax.activation:activation:${activationVersion}")
compileOnly("org.projectlombok:lombok:${lombokVersion}")
testCompile("org.jmockit:jmockit:${jmockitVersion}")
testCompile('org.springframework.boot:spring-boot-starter-test') {
exclude(group: 'org.mockito')
}
}
dependencyManagement {
imports {
mavenBom "org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}"
}
}
...
Investigating this problem I have figure out only that gradle itself, lombok and jmockit uses asmlibrary which probably can cause this exception. Could someone answer me what library invoke this exception?
调查这个问题我只发现了 gradle 本身，lombok 和 jmockit 使用的asm库可能会导致这个异常。有人可以回答我是哪个库调用了这个异常吗？
UPDATE
更新
I have found that article about the same problem: https://matsumana.info/blog/2018/09/25/gradle-with-jdk11/which point to the gradle issue here https://github.com/gradle/gradle/issues/5120So it means gradle still not support Java 11 yet?
我发现了关于同样问题的文章：https: //matsumana.info/blog/2018/09/25/gradle-with-jdk11/，它指向这里的 gradle 问题https://github.com/gradle/gradle /issues/5120所以这意味着 gradle 还不支持 Java 11？
采纳答案by Jorn Vernee
Java 11 added nest based access, so any byte code writing APIs like ASMhad to be updated to support the class-file changes.
Java 11 添加了基于嵌套的访问，因此必须更新任何字节码编写 API（如ASM）以支持类文件更改。
Looking at the source code for that method in the 6.2.1 version of ASM (which is the one that gradle seems to be using):
查看 6.2.1 版 ASM 中该方法的源代码（这是 gradle 似乎正在使用的那个）：
@Deprecated
public void visitNestMemberExperimental(final String nestMember) {
if (api < Opcodes.ASM7_EXPERIMENTAL) {
throw new UnsupportedOperationException();
}
if (cv != null) {
cv.visitNestMemberExperimental(nestMember);
}
}
The API level required is 7 which is currently in beta. I guess they are waiting for a release version of ASM 7 before updating the dependency.
所需的 API 级别为 7，目前处于测试阶段。我猜他们在更新依赖项之前正在等待 ASM 7 的发布版本。
回答by Mikhail Kholodkov
回答by Horcrux7
Gradle version 4.10.3 seems also to solve it.
Gradle 4.10.3 版似乎也解决了。
回答by Rajesh B
I faced this error. Because my gradle file was configured with 1.7 jdk and in project settings i was referring to 1.8 jdk. so i changed in gradle file to sourceCompatibility = 1.8 targetCompatibility = 1.8
我遇到了这个错误。因为我的 gradle 文件配置了 1.7 jdk，并且在项目设置中我指的是 1.8 jdk。所以我在 gradle 文件中更改为 sourceCompatibility = 1.8 targetCompatibility = 1.8
