camel路由

camel路由需要注意的点：外面必须加上<choice>标签，否则不能根据条件选择when还是otherwise

<choice>

     <when>

     </when>

     <otherwise>

     </otherwise>

</choice>

<routes xmlns="http://camel.apache.org/schema/spring">
    <!-- 领取多个优惠券 -->
    <route id="getCoupons">
        <from uri="direct:getCoupons"/>

        <!-- Save Origin Request Message: usage ${property.originRequest} -->
        <setProperty propertyName="getCouponsRequest">
            <simple>${in.body}</simple>
        </setProperty>

        <!--领取通用券-->
        <to uri="bean:cardService?method=getCommonCoupons(${property.getCouponsRequest})"/>

        <setProperty propertyName="getCouponsResponse">
            <simple>${body}</simple>
        </setProperty>

        <choice>
            <!-- 领取等级优惠券和生日券 -->
            <when>

                <simple>${body.data.lead.stageId} &gt; 1</simple>

                <!--领取等级券-->
                <to uri="bean:cardService?method=getStageCoupons(${property.getCouponsRequest})"/>

                <setProperty propertyName="getStageCoupons">
                    <simple>${body}</simple>
                </setProperty>

                <!--领取生日券-->
                <to uri="bean:cardService?method=getBirthdayCoupons(${property.getCouponsRequest})"/>

                <setProperty propertyName="getBirthdayCoupons">
                    <simple>${body}</simple>
                </setProperty>

                <!--把所有的券转换成一个请求对象-->
                <bean ref="couponsTransform" method="toCouponsRequest(${property.getCouponsResponse},${property.getStageCoupons},${property.getBirthdayCoupons})"/>

                <setProperty propertyName="toCouponsRequest">
                    <simple>${body}</simple>
                </setProperty>

                <choice >
                    <when>

                        <simple>${body.coupons.size} == 0</simple>

                        <!--无可领取的券，发送文本消息无可领取的券-->
                        <to uri="bean:messageService?method=sendNoCouponTextMessage(${property.toCouponsRequest})"/>

                    </when>
                    <otherwise>

                        <!--调用发送券类型的文本消息接口-->
                        <to uri="bean:messageService?method=sendCouponTextMessage(${property.toCouponsRequest})"/>

                        <!--调用领取多张券的消息接口-->
                        <to uri="bean:messageService?method=sendCoupons(${property.toCouponsRequest})"/>
                    </otherwise>
                </choice>
            </when>
            <!-- 等级小于等于1 -->
            <otherwise>

                <choice>
                    <!--没有券可以领，发送图片-->
                    <when>
                        <simple>${body.data.coupons}  == null || ${body.data.coupons.size} == 0 </simple>

                        <!--调用发送图片消息接口-->
                        <to uri="bean:messageService?method=sendImageMessage(${property.getCouponsResponse.data})"/>

                    </when>

                    <!--有券可以领,发送等级1文本+发券信息-->
                    <otherwise>

                        <!--调用发送券类型的文本消息接口-->
                        <to uri="bean:messageService?method=sendCouponTextMessage(${property.getCouponsResponse.data})"/>

                        <!--调用领取多张券的消息接口-->
                        <to uri="bean:messageService?method=sendCoupons(${property.getCouponsResponse.data})"/>

                    </otherwise>
                </choice>

            </otherwise>
        </choice>
    </route>