您可以创建一个 WEB-INF/spring/pdf-beans.xml，如下所示。
<bean id="listofusers" class="YourPDFBasedView"/>
您的控制器方法将返回视图名称作为用户列表。
@RequestMapping(value="users")
public ModelAndView listUsersAsPdf(@ReqestParams Integer offset, @ReqestParams Integer limit, @ReqestParams String query) {
List<User> users = listUsers(offset, limit, query); // delegated
return new ModelAndView("listofusers", users);
}
您可以通过这种方式使用 contentNegotiationViewResolver ：
<bean class="org.springframework.web.servlet.view.XmlViewResolver">
<property name="order" value="1"/>
<property name="location" value="WEB-INF/spring/pdf-views.xml"/>
</bean>
<!--
View resolver that delegates to other view resolvers based on the content type
-->
<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
<!-- All configuration is now done by the manager - since Spring V3.2 -->
<property name="contentNegotiationManager" ref="cnManager"/>
</bean>
<!--
Setup a simple strategy:
1. Only path extension is taken into account, Accept headers are ignored.
2. Return HTML by default when not sure.
-->
<bean id="cnManager" class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">
<property name="ignoreAcceptHeader" value="true"/>
<property name="defaultContentType" value="text/html" />
</bean>
对于 JSON：创建如下所示的通用 JSON 视图解析器，并将其注册为上下文文件中的 bean。
public class JsonViewResolver implements ViewResolver {
/**
* Get the view to use.
*
* @return Always returns an instance of {@link MappingJacksonJsonView}.
*/
@Override
public View resolveViewName(String viewName, Locale locale) throws Exception {
MappingJacksonJsonView view = new MappingJacksonJsonView();
view.setPrettyPrint(true); // Lay the JSON out to be nicely readable
return view;
}
}
XML 相同：
public class MarshallingXmlViewResolver implements ViewResolver {
private Marshaller marshaller;
@Autowired
public MarshallingXmlViewResolver(Marshaller marshaller) {
this.marshaller = marshaller;
}
/**
* Get the view to use.
*
* @return Always returns an instance of {@link MappingJacksonJsonView}.
*/
@Override
public View resolveViewName(String viewName, Locale locale)
throws Exception {
MarshallingView view = new MarshallingView();
view.setMarshaller(marshaller);
return view;
}
}
并在上下文文件中注册上述 xml 视图解析器，如下所示：
<oxm:jaxb2-marshaller id="marshaller" >
<oxm:class-to-be-bound name="some.package.Account"/>
<oxm:class-to-be-bound name="some.package.Customer"/>
<oxm:class-to-be-bound name="some.package.Transaction"/>
</oxm:jaxb2-marshaller>
<!-- View resolver that returns an XML Marshalling view. -->
<bean class="some.package.MarshallingXmlViewResolver" >
<constructor-arg ref="marshaller"/>
</bean>
您可以在此链接中找到更多信息：http:
//spring.io/blog/2013/06/03/content-negotiation-using-views/
使用所有视图解析器技术，您可以避免在控制器中编写重复的方法，例如一个用于 xml/json，另一个用于 excel，另一个用于 pdf，另一个用于 doc、rss 等等。