Question

我是Spring Web Flow的新手。我使用spring web flow创建了一个示例项目。从主页，mvc控制器方法按照期望执行并到达第二页。从第二页开始，点击提交时必须执行一个评估表达式。而不是首先执行的方法再次执行。我可以看到表单上的操作只是$ {flowExecutionUrl}。所以RequestMapping得到了相同的url。因此执行旧方法。

是否可以更改操作属性中的uri，然后附加$ {flowExecutionUrl}。
我们如何确保正在执行流程定义文件

Servlet的context.xml中

<context:annotation-config/>
    <context:component-scan base-package="com.metlife.claim"/>
    <bean class=
"org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"/>
      <bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <value>
                /claim/=flowController
            </value>
        </property>
        <property name="alwaysUseFullPath" value="true"/>
    </bean>
        <bean class=
"org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>
    <bean class=
"org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>
       <bean id="viewResolver" class=
"org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
        <bean id="flowController" class=
"org.springframework.webflow.mvc.servlet.FlowController">
        <property name="flowExecutor" ref="flowExecutor"/>
    </bean>
        <flow:flow-executor id="flowExecutor" flow-registry="flowRegistry"/>
        <flow:flow-registry id="flowRegistry"
            flow-builder-services="flowBuilderServices">
        <flow:flow-location path="/WEB-INF/flows/claims-flow.xml"/>
    </flow:flow-registry>

    <flow:flow-builder-services id="flowBuilderServices"
            view-factory-creator="viewFactoryCreator"/>

    <bean id="viewFactoryCreator" class=
"org.springframework.webflow.mvc.builder.MvcViewFactoryCreator">
        <property name="viewResolvers">
            <list>
                <ref bean="viewResolver"/>
            </list>
        </property>
    </bean>
</beans>

根据权利要求-flow.xml

<?xml version="1.0" encoding="UTF-8"?>
<flow xmlns="http://www.springframework.org/schema/webflow"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/webflow
        http://www.springframework.org/schema/webflow/spring-webflow-2.0.xsd">

    <!-- <view-state id="claims" view="addClaims"> -->
    <view-state id="claims" model = "viewScope.claim">
    <transition to="claimsEntered" on="submit">
        <!-- <evaluate expression="claimController.saveNewClaim(viewScope.claim)"></evaluate> -->
        </transition>
        </view-state>
    <action-state id="claimsEntered">
    <evaluate expression="claimController.saveNewClaim(viewScope.claim)"></evaluate>
    <transition to="claims"></transition>
    </action-state>
</flow>

ClaimController.java

@Controller
public class ClaimController {

    public static List<Claim> claimList = new ArrayList<Claim>();

    @RequestMapping(value = "/claims/")
    public void getClaims(){
        System.out.println("Hi Claims");
    }

    public void saveNewClaim(Claim claim){
        claimList.add(claim);
        System.out.println("The claim has been added...");
    }
}

claims.jsp

<form modelAttribute = "claim" action= "${flowExecutionUrl}">
<table>
<tr>
<td>Id</td>
<td><input type = "text" path="id" name = "id"/></td>
<tr>
<tr>
<td>Name</td>
<td><input type = "text" path="id" name = "name"/></td>
<tr>
<tr>
<td>Age</td>
<td><input type = "text" path="id" name = "age"/></td>
<tr>
<tr>
<td>Amount</td>
<td><input type = "text" path="id" name = "amount"/></td>
<tr>
<tr>
<td>Region</td>
<td><input type = "text" path="id" name = "region"/></td>
<tr>
<tr>
<td>
<input type = "submit" id = "submit" name = "_eventId_submit" value = "Submit"></td></tr>
</table>
</form>

针对home.jsp

<body>
<h1>
</h1>
<P> <a href="claims/" >Claims</a> </P>
</body>

在来自claims.jsp的Submit按钮的click事件中，它正在执行ClaimController的getClaims（）方法而不是saveNewClaim（）。

任何人都可以帮助确定实施的问题，如何解决这个问题。在此先感谢

Answer 1

我不确定claim-flow.xml，但您可以在saveNewClaim方法中使用RequestMapping。

@RequestMapping(value = "/claims/", method = RequestMethod.POST)
public void saveNewClaim(Claim claim){
    claimList.add(claim);
    System.out.println("The claim has been added...");
}

我正在考虑这样的事情：

@Controller
public class ClaimController {

    public static List<Claim> claimList = new ArrayList<Claim>();

    @RequestMapping(value = "/claims/", method = RequestMethod.GET)
    public void getClaims(){
        System.out.println("Hi Claims");
    }
    @RequestMapping(value = "/claims/", method = RequestMethod.POST)
    public void saveNewClaim(Claim claim){
        claimList.add(claim);
        System.out.println("The claim has been added...");
    }
}

第一种方法加载表单。第二个响应来自此表单的POST请求。

而不是执行评估表达式，正在执行mvc控制器方法 - Spring Web Flow

1 个答案: