如何在Apache Camel中使用REST DSL生成xml响应

Question

我试图使用Apache camel中的rest DSL来消费和生成xml响应，但它以一个例外结束，我如何将输出的POJO对象封送为xml。下面是西阿帕奇骆驼路线

<camelContext id="camelContext-02bcd908-03ed-4c2c-878a-b87e3a3668ca"
        xmlns="http://camel.apache.org/schema/blueprint">
        <restConfiguration bindingMode="xml" component="servlet"
            contextPath="/camel-example-servlet-rest-blueprint/rest" port="8181">
            <dataFormatProperty key="mustBeJAXBElement" value="true" />
        </restConfiguration>
        <!-- defines the rest services using the context-path /user -->
        <rest consumes="application/xml" path="/user" produces="application/xml">
            <description>User rest service</description>
            <!-- this is a rest GET to view an user by the given id -->
            <get outType="org.apache.camel.example.rest.User" uri="/{id}">
                <description>Find user by id</description>
                <to uri="bean:userService?method=getUser(${header.id})" />
            </get>
            <!-- this is a rest GET to find all users -->
            <get outType="org.apache.camel.example.rest.User[]" uri="/findAll">
                <description>Find all users</description>
                <to uri="bean:userService?method=listUsers" />
            </get>
        </rest>
    </camelContext>

java.io.IOException：org.apache.camel.invalidPayloadException：没有类型为javax.xml.bind.jaxbelEment但具有值为[org.apache.camel.example.rest.user@7f98bc82,org.apache.camel.example.rest.user@4502b96]类型为java.util.TreeMap.values on：消息[ID-NISB-TEC-C3880-56991-1499145269945-37-3]的正文。Exchange[ID-NISB-TEC-C3880-56991-14991459945-37-2]在org.apache.camel.converter.jaxb.jaxbDataFormat.Marshal(jaxbDataFormat.java:153)在org.apache.camel.processor.MarshalProcessor.Process（MarshalProcessor.java:69)在org.apache.camel.util.AsyncProcessorHelper.Process（AsyncProcessorHelper.java:109)在org.apache.camel.processor.MarshalProcessor.Process（

Answer 1

您可以尝试将bindingMode更改为“Off”。

在创建get方法时，可以使用“consumes”和“produces”参数等于“application/xml”，如下所示：

 <get outType="org.apache.camel.example.rest.User[]" uri="/findAll"consumes="application/xml" produces="application/xml">
    <description>Find all users</description>
    <to uri="bean:userService?method=listUsers" />
 </get>