xml - 如何删除 Spring mvc @ResponseBody 的 XML 标头？

Question

@RequestMapping(method = RequestMethod.GET, produces = "application/xml")
@ResponseBody

像这样的响应xml

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<xml>
    <code>0</code>
    <msg>success</msg>
</xml>

但是我想要这样的回应

<xml>
    <code>0</code>
    <msg>success</msg>
</xml>

如何通过注释或 XML 配置文件删除 XML 标头？谢谢。

我已经解决了这个问题。

1. 使用这个 XML Conventor

      <bean class="org.springframework.http.converter.xml.MarshallingHttpMessageConverter">
           <property name="marshaller" ref="marshaller"></property>
           <property name="unmarshaller" ref="marshaller"></property>
       </bean>
   

2. 配置 Marshaller bean

   <bean class="org.springframework.oxm.jaxb.Jaxb2Marshaller" id="marshaller">
   <property name="classesToBeBound">
       <list>
           <value>com.xx.entity.Message</value>
       </list>
   </property>
   <property name="marshallerProperties">
       <map>
           <entry>
               <key>
                   <util:constant static-field="javax.xml.bind.Marshaller.JAXB_FRAGMENT"/>
               </key>
               <value type="java.lang.Boolean">true</value>
           </entry>
       </map>
   </property>
   

Answer 1

我已经解决了这个问题。

1. 使用这个 XML Conventor

      <bean class="org.springframework.http.converter.xml.MarshallingHttpMessageConverter">
           <property name="marshaller" ref="marshaller"></property>
           <property name="unmarshaller" ref="marshaller"></property>
       </bean>
   

2. 配置 Marshaller bean

   <bean class="org.springframework.oxm.jaxb.Jaxb2Marshaller" id="marshaller">
   <property name="classesToBeBound">
       <list>
           <value>com.xx.entity.Message</value>
       </list>
   </property>
   <property name="marshallerProperties">
       <map>
           <entry>
               <key>
                   <util:constant static-field="javax.xml.bind.Marshaller.JAXB_FRAGMENT"/>
               </key>
               <value type="java.lang.Boolean">true</value>
           </entry>
       </map>
   </property>
   

Answer 2

在 Spring Boot 中，您可以创建自己的子类Jaxb2RootElementHttpMessageConverter并自定义编组器：

@Configuration
class XmlConfiguration {
    @Bean
    Jaxb2RootElementHttpMessageConverter jaxb2RootElementHttpMessageConverter() {
        return new Jaxb2RootElementHttpMessageConverter() {
            @Override
            @SneakyThrows
            protected void customizeMarshaller(Marshaller marshaller) {
                marshaller.setProperty(Marshaller.JAXB_FRAGMENT, true);
            }
        };
    }
}

（@SneakyThrows来自龙目岛）