[英]What is the proper way to convert XML to Java objects in spring integration?
我一直在寻找一种将 XML 到 Java 对象转换器合并到我的 spring 集成服务中的方法。 这是我确定必须已经存在的东西,但我遇到的问题是我一直在寻找基于 Spring 集成的旧版本的文档和教程。
我尝试转换为的类已使用 javax.xml.bind.annotation 进行了注释。
这是我迄今为止在我的服务中所拥有的,它基于此页面...
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:int="http://www.springframework.org/schema/integration"
xmlns:file="http://www.springframework.org/schema/integration/file"
xmlns:feed="http://www.springframework.org/schema/integration/feed"
xmlns:jms="http://www.springframework.org/schema/integration/jms"
xmlns:int-xml="http://www.springframework.org/schema/integration/xml"
xmlns:oxm="http://www.springframework.org/schema/oxm"
xsi:schemaLocation="http://www.springframework.org/schema/integration/feed http://www.springframework.org/schema/integration/feed/spring-integration-feed.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration.xsd
http://www.springframework.org/schema/integration/file http://www.springframework.org/schema/integration/file/spring-integration-file.xsd
http://www.springframework.org/schema/integration/jms http://www.springframework.org/schema/integration/jms/spring-integration-jms.xsd
http://www.springframework.org/schema/integration/xml http://www.springframework.org/schema/integration/xml/spring-integration-xml-4.2.xsd
http://www.springframework.org/schema/oxm http://www.springframework.org/schema/oxm/spring-oxm-3.0.xsd">
.............
<bean id="unmarshallingTransformer" class="org.springframework.integration.xml.transformer.UnmarshallingTransformer">
<constructor-arg>
<bean class="org.springframework.oxm.jaxb.Jaxb2Marshaller">
<property name="contextPath" value="com.bottomline.cfrm.amq_wfs_bridge.model.audit" />
</bean>
</constructor-arg>
</bean>
<int-xml:unmarshalling-transformer id="defaultUnmarshaller"
input-channel="channel_1" output-channel="channel_2"
unmarshaller="unmarshallingTransformer"/>
.............
</beans>
但是当我尝试这个时,我得到...
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.integration.xml.transformer.UnmarshallingTransformer#0': Unsatisfied dependency expressed through constructor argument with index 0 of type [org.springframework.oxm.Unmarshaller]: Could not convert constructor argument value of type [org.springframework.integration.xml.transformer.UnmarshallingTransformer] to required type [org.springframework.oxm.Unmarshaller]: Failed to convert value of type [org.springframework.integration.xml.transformer.UnmarshallingTransformer] to required type [org.springframework.oxm.Unmarshaller]; nested exception is java.lang.IllegalStateException: Cannot convert value of type [org.springframework.integration.xml.transformer.UnmarshallingTransformer] to required type [org.springframework.oxm.Unmarshaller]: no matching editors or conversion strategy found
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:724) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:185) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1143) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1046) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839) ~[spring-context-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538) ~[spring-context-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118) ~[spring-boot-1.3.6.RELEASE.jar:1.3.6.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:760) ~[spring-boot-1.3.6.RELEASE.jar:1.3.6.RELEASE]
at org.springframework.boot.SpringApplication.createAndRefreshContext(SpringApplication.java:360) ~[spring-boot-1.3.6.RELEASE.jar:1.3.6.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:306) ~[spring-boot-1.3.6.RELEASE.jar:1.3.6.RELEASE]
at com.bridge.Application.main(Application.java:14) [classes/:na]
不确定你会达到什么,但你的 StackTrace 说明了你需要的一切,但你错过了:
Could not convert constructor argument value of type [org.springframework.integration.xml.transformer.UnmarshallingTransformer] to required type [org.springframework.oxm.Unmarshaller]
看,你的代码是这样的:
unmarshaller="unmarshallingTransformer"
其中unmarshallingTransformer
是UnmarshallingTransformer
类型,但这要求它像org.springframework.oxm.Unmarshaller
。
考虑配置Jaxb2Marshaller
bean 并将其用作对该unmarshaller
属性的引用。
您不需要手动配置UnmarshallingTransformer
。 <int-xml:unmarshalling-transformer>
将为您做到这一点。
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