问题描述
小弟今天用Spring mvc XStream 返回xml数据，发现给返回的pojo对象修改别名（改成有别名中有"_"）的问题：返回的POJO对象：返回到前端的XML数据：按道理graphicId应该是以grapic_id作为名称，但是实际返回的是grapic__id两个下划线，这个问题如何解决，大家帮忙。感谢
解决方案
Why do field names suddenly have double underscores in the generated XML?XStream maps Java class names and field names to XML tags or attributes. Unfortunately this mapping cannot be 1:1, since some characters used for identifiers in Java are invalid in XML names. Therefore XStream uses an XmlFriendlyNameCoder to replace these characters with a replacement. By default this NameCoder uses an underscore as escape character and has therefore to escape the underscore itself also. You may provide a different configured instance of the XmlFriendlyNameCoder or a complete different implementation like the NoNameCoder to prevent name coding at all. However it is your responsibility then to ensure, that the resulting names are valid for XML.http://xstream.codehaus.org/faq.html1、1.4及以后<bean id="marshaller" class="org.springframework.oxm.xstream.AnnotationXStreamMarshaller"> <property name="streamDriver"> <bean class="com.thoughtworks.xstream.io.xml.StaxDriver"> <constructor-arg> <bean class="com.thoughtworks.xstream.io.naming.NoNameCoder()"> </bean> </constructor-arg> </bean> </property> </bean>2、1.4之前 <bean id="marshaller" class="org.springframework.oxm.xstream.AnnotationXStreamMarshaller"> <property name="streamDriver"> <bean class="com.thoughtworks.xstream.io.xml.XppDriver"> <constructor-arg> <bean class="com.thoughtworks.xstream.io.xml.XmlFriendlyReplacer"> <constructor-arg index="0" value="_-"/> <constructor-arg index="1" value="_"/> </bean> </constructor-arg> </bean> </property> </bean>3、注册到spring mvc <mvc:annotation-driven> <mvc:message-converters> <bean class="org.springframework.http.converter.xml.MarshallingHttpMessageConverter"><property name="marshaller" ref="marshaller" /><property name="unmarshaller" ref="marshaller" /></bean> </mvc:message-converters></mvc:annotation-driven>
解决方案二：
因为XStream用下划线当转义符。你恐怕得自定义个NameCoder参考 官方：http://xstream.codehaus.org/faq.htmlstackoverflow:http://stackoverflow.com/questions/9800494/xstream-double-underline-handling-java