Spring MVC 3：通过@ResponseBody返回XML [英] Spring MVC 3: Returning XML through @ResponseBody

问题描述

请原谅我发布这个noob问题，但我现在已经调试了这个问题很长一段时间了。我在尝试获取响应以基于对象返回XML时遇到一些问题： -

Pardon me for posting this noob question, but I have been debugging this problem for quite awhile now. I'm having a little problem trying to get the response to return the XML based on the object:-

@RequestMapping(value = "/mylink", method = RequestMethod.GET)
public @ResponseBody SomeObject doIt() {
    ...
}

现在，即使调用该API，我的客户端也根本不会收到XML响应。我一直在阅读一些地方，似乎我需要配置XML marshaller或一些XML解析器，但我不确定如何将该部分集成到我现有的配置中。我目前在servlet.xml中有以下配置： -

Right now, even though that API is called, my client side does not receive the XML response at all. I have been reading a few places and it seems like I need to configure the XML marshaller or somesort of XML resolvers, but I'm not sure how to integrate that piece into my existing configuration. I currently have the following configuration in my servlet.xml:-

<context:component-scan base-package="ss.controller" />

<mvc:annotation-driven />

<mvc:resources location="/resources/" mapping="/resources/**" />

<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/jsp/app/" />
    <property name="suffix" value=".jsp" />
</bean>

有人可以发布一些示例配置，说明如何配置我的servlet.xml以获取这工作？非常感谢。

Can someone kindly post some sample configurations on how I might go about in configuring my servlet.xml to get this working? Thanks much.

推荐答案

这可以通过在Spring上下文中添加以下魔法来实现（参见 docs ）：

This can be done by adding the following bit of magic to the Spring context (see docs):

<mvc:annotation-driven/>

除其他外，提供：

如果类路径中存在JAXB，则支持读写XML。

Support for reading and writing XML, if JAXB is present on the classpath.

如果检测到JAXB （即如果您使用的是Java6，或者在类路径上有一些JAXB实现），这将使用上下文注册 Jaxb2RootElementHttpMessageConverter ，并提供吐出的能力来自 @ResponseBody -annotated方法的返回值的XML。

If JAXB is detected (i.e. if you're on Java6, or otherwise have some JAXB implementation on your classpath), this will register a Jaxb2RootElementHttpMessageConverter with the context, and will provide the ability to spit out XML from the return value of the @ResponseBody-annotated method.

注意：您的问题排序建议使用用于呈现XML的 ViewResolver ，但这不是必需的。 @ResponseBody 注释旨在完全绕过视图层。

Note: Your question sort-of suggested using a ViewResolver for rendering the XML, but this isn't necessary. The @ResponseBody annotation is designed to bypass the view layer altogether.

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