如何将业务服务返回的值存储在Spring Web Flow的变量中? [英] how to store value returned by a business service in a variable in spring web flow?

问题描述

情况:我正在开发一个Spring MVC Web Flow应用程序，因为我有两个表customer和customerAdress以及两个相应的模型:customerModel和customerAdressModel，现在如下是我的flow.xml:

Situation : I am developing a spring mvc web flow app , in that i have two tables customer and customerAdress and two corresponding models : customerModel and customerAdressModel , now following is my flow.xml :

   <var name="customer" class="com.model.Customer"/>
   <var name="customerAdress" class="com.model.CustomerAdress"/>
   <var name="id">

   <view-state id="customer" view="customerView.jsp" model="customer">

    <transition on="next" to="customerAdress"/>
    </view-state>

    <view-state id="customerAdress" view="customerAdressView.jsp" model="customerAdress">

    <transition on="next" to="insertCustomer"/>
    </view-state>

   <action-state id="insertCustomer">
    <evaluate expression="Buisness.insertCustomer(customer)"/>
    <evaluate expression="Buisness.fetchCustomerId(customer)" result="id"/>
    <evaluate expression="Buisness.insertCustomerAdress(id,cutomerAdress)"/>
    </action-state> 

现在insertCustomer插入客户，fetchCustomerId获取客户的ID，insertCusotomerAdress通过id

Now insertCustomer inserts customer , fetchCustomerId fetches customer's id and insertCusotomerAdress inserts adresses of customer by id

问题:我的问题是此代码无法正常工作，尤其是insertCustomerAdress无法正常工作，我认为我在对id进行除法或将商务服务的值分配给id时犯了一些错误，有人可以告诉我正确的语法吗?

Problem : My problem is this code is not working , specifically insertCustomerAdress is not working , i think i have done some mistake in decalring id or assigning buisness service's value to id , can somebody please tell me proper syntax ?

推荐答案

默认情况下，动作状态仅执行第一个动作.要执行一系列操作，请使用

By default action state executes only first action. To execute a chain of actions use Named actions.

<action-state id="insertCustomer">
    <evaluate expression="Buisness.insertCustomer(customer)">
        <attribute name="name" value="insertCustomer" />
    </evaluate>
    <evaluate expression="Buisness.fetchCustomerId(customer)" result="id">
        <attribute name="name" value="fetchCustomerId" />
    </evaluate>
    <evaluate expression="Buisness.insertCustomerAdress(id,cutomerAdress)">
        <attribute name="name" value="insertCustomerAdress" />
    </evaluate>
    <transition on="insertCustomerAdress.success" to="[state id to transit]" />
</action-state>

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