英文:
mvn spring-boot:run results in java.lang.LinkageError: loader constraint violation
问题
我有一个项目，将其作为可执行的JAR运行时正常运行。
然而，当我使用 mvn spring-boot:run 时，我遇到以下错误：
在线程 "Thread-129" 中的异常 java.lang.LinkageError: loader constraint violation: loader (instance of sun/misc/Launcher$AppClassLoader) previously initiated loading for a different type with name "org/test/DefaultIdAndText"
at java.lang.ClassLoader.defineClass1(Native Method)
...
我无法分享代码，因为它是私有的。
我确实有相同的库JAR依赖项两次（直接1次），并且还有1次通过另一个依赖项。
我尝试过添加排除项，但似乎没有任何作用。
奇怪的是，当我直接运行JAR时，应用程序运行正常。
更新
我还注意到了以下情况... 我认为这就是问题所在：
TomcatEmbeddedWebappClassLoader
context: ROOT
delegate: true
-----------> Parent Classloader:
org.springframework.boot.devtools.restart.classloader.RestartClassLoader@79fe98a7
我将尝试禁用开发工具的类加载器和重新加载。
英文:
I have a project that runs fine with I run it as an executable JAR.
However, when I use mvn spring-boot:run I get the following error:
exception in thread "Thread-129" java.lang.LinkageError: loader constraint violation: loader (instance of sun/misc/Launcher$AppClassLoader) previously initiated loading for a different type with name "org/test/DefaultIdAndText"
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Class.java:2583)
at java.lang.Class.getDeclaredFields(Class.java:1916)
at com.fasterxml.jackson.databind.util.ClassUtil.getDeclaredFields(ClassUtil.java:1055)
at com.fasterxml.jackson.databind.introspect.AnnotatedFieldCollector._findFields(AnnotatedFieldCollector.java:66)
at com.fasterxml.jackson.databind.introspect.AnnotatedFieldCollector.collect(AnnotatedFieldCollector.java:41)
at com.fasterxml.jackson.databind.introspect.AnnotatedFieldCollector.collectFields(AnnotatedFieldCollector.java:36)
at com.fasterxml.jackson.databind.introspect.AnnotatedClass._fields(AnnotatedClass.java:349)
at com.fasterxml.jackson.databind.introspect.AnnotatedClass.fields(AnnotatedClass.java:321)
at com.fasterxml.jackson.databind.introspect.POJOPropertiesCollector._addFields(POJOPropertiesCollector.java:379)
at com.fasterxml.jackson.databind.introspect.POJOPropertiesCollector.collectAll(POJOPropertiesCollector.java:308)
at com.fasterxml.jackson.databind.introspect.POJOPropertiesCollector.getJsonValueAccessor(POJOPropertiesCollector.java:196)
at com.fasterxml.jackson.databind.introspect.BasicBeanDescription.findJsonValueAccessor(BasicBeanDescription.java:251)
at com.fasterxml.jackson.databind.ser.BasicSerializerFactory.findSerializerByAnnotations(BasicSerializerFactory.java:346)
at com.fasterxml.jackson.databind.ser.BeanSerializerFactory._createSerializer2(BeanSerializerFactory.java:216)
at com.fasterxml.jackson.databind.ser.BeanSerializerFactory.createSerializer(BeanSerializerFactory.java:165)
at com.fasterxml.jackson.databind.SerializerProvider._createUntypedSerializer(SerializerProvider.java:1389)
at com.fasterxml.jackson.databind.SerializerProvider._createAndCacheUntypedSerializer(SerializerProvider.java:1336)
at com.fasterxml.jackson.databind.SerializerProvider.findValueSerializer(SerializerProvider.java:510)
at com.fasterxml.jackson.databind.SerializerProvider.findTypedValueSerializer(SerializerProvider.java:713)
at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:308)
at com.fasterxml.jackson.databind.ObjectMapper._configAndWriteValue(ObjectMapper.java:3905)
at com.fasterxml.jackson.databind.ObjectMapper.writeValueAsString(ObjectMapper.java:3219)
at lambda$commit$0(EventStoreService.java:120)
at java.util.concurrent.ConcurrentHashMap$EntrySpliterator.forEachRemaining(ConcurrentHashMap.java:3606)
at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:580)
I can't share the code because it is proprietary.
I do have the same library jar dependency two times (1 directly), and 1 through another dependency.
I added an exclusion but this doesn't seem to do anything.
The strange thing is that the application runs fine, when I run the jar directly.
Update
I also noticed the following... and I think it is the problem:
TomcatEmbeddedWebappClassLoader
context: ROOT
delegate: true
----------> Parent Classloader:
org.springframework.boot.devtools.restart.classloader.RestartClassLoader@79fe98a7
I will try to disable the devtools classloader and reloading.
答案1
得分: 1
问题出在 Spring 开发工具上。
我不得不将它移除，并且还要从任何其他依赖项中排除掉它。
我首先通过运行以下命令并查看其位置来将其移除：
dependency:tree -Dverbose
然后，我要么将依赖项注释掉，要么添加以下排除项：
<exclusion>
<!-- 在此处声明排除项 -->
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</exclusion>
移除后，错误消失了，现在我看到：
TomcatEmbeddedWebappClassLoader
context: ROOT
delegate: true
----------> Parent Classloader:
java.net.URLClassLoader@44052821
英文:
The problem was spring dev tools.
I had to remove it, and also remove it with an exclusion from any other dependencies.
I removed it by first running the following and seeing where it was located:
dependency:tree -Dverbose
And following I either commented out the dependency or added the following exclusion:
<exclusion> <!-- declare the exclusion here -->
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</exclusion>
After removing it, the error went away and I now see:
TomcatEmbeddedWebappClassLoader
context: ROOT
delegate: true
----------> Parent Classloader:
java.net.URLClassLoader@44052821
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论