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杰克逊数据绑定类路径问题(Jackson Databind classpath issue)

 我有一个弹簧启动应用程序，当我在我的本地使用“mvn clean install”进行部署时工作正常，但是当通过Jenkin生成战争时，它会抛出以下错误。  
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'objectMapper' defined in class path resource [com/test/common/TestRestConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.fasterxml.jackson.databind.ObjectMapper]: Factory method 'objectMapper' threw exception; nested exception is java.lang.NoClassDefFoundError: Could not initialize class com.fasterxml.jackson.databind.SerializationConfig
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1123)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1018)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1192)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1116)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014)
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545)
        ... 62 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.fasterxml.jackson.databind.ObjectMapper]: Factory method 'objectMapper' threw exception; nested exception is java.lang.NoClassDefFoundError: Could not initialize class com.fasterxml.jackson.databind.SerializationConfig
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189)
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588)
        ... 74 common frames omitted
Caused by: java.lang.NoClassDefFoundError: Could not initialize class com.fasterxml.jackson.databind.SerializationConfig
        at com.fasterxml.jackson.databind.ObjectMapper.<init>(ObjectMapper.java:535)
        at com.fasterxml.jackson.databind.ObjectMapper.<init>(ObjectMapper.java:452)
 
 我只是尝试比较使用无法比较的2个战争文件，除了用于编译的JDK次要版本之外，我没有看到任何差异。  
 我试图在我的本地版本和jenkin版本中搜索SerializationConfig.class，  
 下面的命令的输出是，  
find . -type f -name '*.jar' -print0 |  xargs -0 -I '{}' sh -c 'jar tf {} | grep SerializationConfig.class &&  echo {}'
 
 局部战争O / P： -  
com/fasterxml/jackson/databind/SerializationConfig.class
./jackson-databind-2.7.3.jar
org/codehaus/jackson/map/SerializationConfig.class
./jackson-mapper-asl-1.9.13.jar
com/fasterxml/jackson/databind/SerializationConfig.class
./jersey-all-2.18.jar
 
 詹金战争O / P： -  
com/fasterxml/jackson/databind/SerializationConfig.class
./jersey-all-2.18.jar
org/codehaus/jackson/map/SerializationConfig.class
./jackson-mapper-asl-1.9.13.jar
com/fasterxml/jackson/databind/SerializationConfig.class
./jackson-databind-2.7.3.jar
 
 基本上，我在我的TestRestConfiguration类中注入了ObjectMapper，如下所示，  
@Inject
    private ObjectMapper objectMapper;
 
 不确定，为什么通过Jenkin生成的战争文件造成问题。  
 任何帮助，将不胜感激。 

I have a spring boot app which works fine when i do the deploy using "mvn clean install" in my local, but when the war is generated through Jenkin, it is throwing the following error. 
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'objectMapper' defined in class path resource [com/test/common/TestRestConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.fasterxml.jackson.databind.ObjectMapper]: Factory method 'objectMapper' threw exception; nested exception is java.lang.NoClassDefFoundError: Could not initialize class com.fasterxml.jackson.databind.SerializationConfig
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1123)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1018)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1192)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1116)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014)
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545)
        ... 62 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.fasterxml.jackson.databind.ObjectMapper]: Factory method 'objectMapper' threw exception; nested exception is java.lang.NoClassDefFoundError: Could not initialize class com.fasterxml.jackson.databind.SerializationConfig
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189)
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588)
        ... 74 common frames omitted
Caused by: java.lang.NoClassDefFoundError: Could not initialize class com.fasterxml.jackson.databind.SerializationConfig
        at com.fasterxml.jackson.databind.ObjectMapper.<init>(ObjectMapper.java:535)
        at com.fasterxml.jackson.databind.ObjectMapper.<init>(ObjectMapper.java:452)
 
I just tried comparing the 2 war files using beyond compare and i dont see any diff except the JDK minor version being used to compile.  
I tried to search for the SerializationConfig.class in my local build and in the jenkin build, 
The output for the below command is, 
find . -type f -name '*.jar' -print0 |  xargs -0 -I '{}' sh -c 'jar tf {} | grep SerializationConfig.class &&  echo {}'
 
Local war O/P :- 
com/fasterxml/jackson/databind/SerializationConfig.class
./jackson-databind-2.7.3.jar
org/codehaus/jackson/map/SerializationConfig.class
./jackson-mapper-asl-1.9.13.jar
com/fasterxml/jackson/databind/SerializationConfig.class
./jersey-all-2.18.jar
 
Jenkin war O/P :- 
com/fasterxml/jackson/databind/SerializationConfig.class
./jersey-all-2.18.jar
org/codehaus/jackson/map/SerializationConfig.class
./jackson-mapper-asl-1.9.13.jar
com/fasterxml/jackson/databind/SerializationConfig.class
./jackson-databind-2.7.3.jar
 
Basically, I inject the ObjectMapper in my TestRestConfiguration class as follows, 
@Inject
    private ObjectMapper objectMapper;
 
Not sure, why the war file being generated through Jenkin is causing problem. 
Any help on this will be appreciated.

原文：https://stackoverflow.com/questions/39419160

更新时间：2022-06-26 22:06

最满意答案

 通常，您希望使用初始化列表来初始化构造函数中的成员：  
canvas()
: fileName("zzz.txt")
{
}
 
 当你这样做：  
fileName = "zzz.txt";
 
 您正在尝试为数组分配值，这是不合法的。 您可以使用值初始化数组，但之后不能为其分配值（作为整体）。 initializer-list语法允许您使用适当的值初始化它。  
 但是，如果您使用的是较旧的编译器，则可能必须使用strcpy ：  
strcpy(fileName,"zzz.txt");
 
 对于可以分配的其他类型，使用initializer-list语法并不是绝对必要的，但它通常仍然是一个好主意。  
 此外，正如其他人所指出的那样，除非你有充分的理由不这样做，否则你最好使用std::string而不是原始的字符数组。 std::string将允许任意长度的字符串，可以像常规值一样对待。 

In general, you want to use an initializer-list to initialize members in a constructor: 
canvas()
: fileName("zzz.txt")
{
}
 
When you do this: 
fileName = "zzz.txt";
 
You are trying to assign a value to an array, which isn't legal. You can initialize an array with values, but you can't assign it a value (as a whole) afterwards. The initializer-list syntax allows you to initialize it with the proper value. 
However, if you are using an older compiler, you may have to use strcpy instead: 
strcpy(fileName,"zzz.txt");
 
For other types that can be assigned, using the initializer-list syntax isn't strictly necessary, but it is still usually a good idea. 
Also, as others have noted, unless you have a good reason not to, you'd be better off using a std::string instead of a raw array of characters. A std::string will allow for strings of arbitrary length which can be treated like regular values.

杰克逊数据绑定类路径问题(Jackson Databind classpath issue)

最满意答案

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