Spring RestTemplate不接受JAXBElement [英] Spring RestTemplate not accepting JAXBElement

问题描述

我正在尝试使用RestTemplate对服务进行简单的POST.我拥有的XSD不会生成根元素"，而是具有根元素类型".但是ObjectFactory.createFoo(FooType)给了我我要发布的JAXBElement，但由于以下异常未能这样做:

I am trying to make a simple POST using RestTemplate to a service. The XSD that I have, does not generate the Root Element but instead has the Root Element Type. But ObjectFactory.createFoo(FooType) gives me the JAXBElement which I am trying to post but failing to do so with below exception:

org.springframework.web.client.RestClientException: Could not write request: no suitable HttpMessageConverter found for request type [com.foo.FooType] and content type [application/xml]

这是我的代码，调用其余服务

This is my code which calls the rest service

HttpHeaders headers = new HttpHeaders();
                    headers.setContentType(MediaType.APPLICATION_XML);
                    HttpEntity<FooType> entity = new HttpEntity<FooType>(request.getValue(),headers);
                    JAXBElement<ResponseType> response = restTemplate.postForObject(esbReplaceNumberListURI, entity, JAXBElement.class);

在通过StackOverflow中的答案后，我尝试将setSupportJaxbElementClass设置为true的Jaxb2Marshaller(来自Spring O/X jar)添加到RestTemplate中.那没有帮助.

I tried adding Jaxb2Marshaller(of Spring O/X jar ) to RestTemplate with setSupportJaxbElementClass set as true after going through an answer in StackOverflow. That did not help.

我正在如下构建我的请求对象，这给了我JAXBElement

I am building my request object as below which gives me JAXBElement

  JAXBElement<FooType> request =  ObjectFactory.createFoo(FooType);

然后在发布时执行如下的request.getValue():

and then while posting I do a request.getValue() as below:

HttpEntity<FooType> entity = new HttpEntity<FooType>(request.getValue(),headers);

我的Spring Config如下:

My Spring Config as below:

@Bean
    public RestTemplate restTemplate() {

        RestTemplate restTemplate = new RestTemplate();
        restTemplate.getMessageConverters().add(getMarshallingHttpMessageConverter());
        return restTemplate;
    }

    @Bean
    public MarshallingHttpMessageConverter getMarshallingHttpMessageConverter() {
        MarshallingHttpMessageConverter marshallingConverter = new MarshallingHttpMessageConverter();
        marshallingConverter.setMarshaller(jaxb2Marshaller());
        marshallingConverter.setUnmarshaller(jaxb2Marshaller());
        marshallingConverter.setSupportedMediaTypes(Arrays.asList(MediaType.APPLICATION_OCTET_STREAM, MediaType.APPLICATION_XML, MediaType.TEXT_XML));

        return marshallingConverter;
    }

    @Bean
    public Jaxb2Marshaller jaxb2Marshaller() {
        Jaxb2Marshaller marshaller = new Jaxb2Marshaller();
        marshaller.setSupportJaxbElementClass(Boolean.TRUE);
        marshaller.setPackagesToScan("com.foo.domain.*");
        return marshaller;
    }

使用Spring-Boot 1.3.5.RELEASE，而后者又使用Spring 4.2.6.RELEASE. 我竭尽全力弄清楚了这一点.非常感谢您的帮助.

Using Spring-Boot 1.3.5.RELEASE which in turn uses Spring 4.2.6.RELEASE. I am at my wits end in figuring this out. Any help is much appreciated.

推荐答案

我大约75％的人确定您应该拥有marshaller.setPackagesToScan("com.foo.domain");，而不是marshaller.setPackagesToScan("com.foo.domain.*");.请注意，缺少*-我相信它正在尝试查找字面名称为*的软件包，该软件包显然不存在.

I'm about 75% sure that you should have marshaller.setPackagesToScan("com.foo.domain");, not marshaller.setPackagesToScan("com.foo.domain.*");. Note the absence of the * - I believe that it's attempting to find a package whose name literally is *, which obviously doesn't exist.

来源:

Jaxb2Marshaller#setPackagesToScan:

这是基于Spring的搜索，因此类似于Spring的组件扫描功能({@link org.springframework.context.annotation.ClassPathBeanDefinitionScanner})

这表明它可能与春季参考书，其中说:

That suggests it's probably the same as described in the Spring Reference, which says:

以下是使用XML的替代方法

The following is an alternative using XML

<?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:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">

    <context:component-scan base-package="org.example"/>

</beans>

有<context:component-scan base-package="org.example"/>.

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