我想使用
Spring HATEOAS的最新稳定版0.19.0.RELEASE.我将它与最新的稳定版本1.2.6.RELEASE的Spring Boot结合起来.在build.gradle中,我们发现了其中的一些
apply plugin: 'spring-boot'
...
dependencies {
compile("org.springframework.boot:spring-boot-starter-web:1.2.6.RELEASE")
compile 'org.springframework.hateoas:spring-hateoas:0.19.0.RELEASE'
}
当我启动主应用程序时,我得到了异常
Exception in thread "main" org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'org.springframework.boot.autoconfigure.hateoas.
HypermediaAutoConfiguration$HypermediaConfiguration$HalObjectMapperConfiguration':
Invocation of init method failed; nested exception is java.lang.NoSuchMethodError:
org.springframework.hateoas.hal.Jackson2HalModule$HalHandlerInstantiator.<init>
(Lorg/springframework/hateoas/RelProvider;Lorg/springframework/hateoas/hal/CurieProvider;)V
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:136)
...
at ... Application.main(Application.java:...)
这看起来很糟糕,但我们可以翻译它.一方面,在spring-boot-autoconfigure-1.2.6.RELEASE.jar的org.springframework.boot.autoconfigure.hateoas.HypermediaAutoConfiguration中,我们发现
public class HypermediaAutoConfiguration {
...
protected static class HypermediaConfiguration {
...
protected static class HalObjectMapperConfiguration {
...
private void registerHalModule(ObjectMapper objectMapper) {
...
Jackson2HalModule.HalHandlerInstantiator instantiator = new Jackson2HalModule.HalHandlerInstantiator(
HalObjectMapperConfiguration.this.relProvider,
HalObjectMapperConfiguration.this.curieProvider);
...
这意味着调用Jackson2HalModule.HalHandlerInstantiator的两个参数Constructor.另一方面,在spring-hateoas-0.19.0.RELEASE.jar的Jackson2HalModule.HalHandlerInstantiator中,构造函数不幸只有3或4个参数:
public class Jackson2HalModule extends SimpleModule {
...
public static class HalHandlerInstantiator extends HandlerInstantiator {
...
public HalHandlerInstantiator(RelProvider resolver, CurieProvider curieProvider,
MessageSourceAccessor messageSource) {
...
}
public HalHandlerInstantiator(RelProvider resolver, CurieProvider curieProvider,
MessageSourceAccessor messageSource, boolean enforceEmbeddedCollections) {
...
}
//no further constructors
我尝试过更新,不稳定的Spring Boot版本,但这也行不通.我不想使用较低版本的Spring HATEOAS,因为在这种情况下会发生其他错误.
你知道是否有任何解决方法?
最佳答案 我使用1.2.5.RELEASE与0.19.0.RELEASE没有任何错误.升级了一些像这样的依赖:
<properties>
<spring-data-releasetrain.version>Gosling-RELEASE</spring-data-releasetrain.version>
<spring-hateoas.version>0.19.0.RELEASE</spring-hateoas.version>
<jackson.version>2.6.1</jackson.version>
</properties>