我正在使用spring webflow 我的jsp页面是
<!-- header -->
<%@include file="../shared/flows-header.jsp"%>
<div class = "container">
<div class = "row">
<div class = col-sm-6>
<div class = "panel panel-primary">
<div class = "panel-heading">
<h4>Personal Details</h4>
</div>
<div class = "panel-body">
<!-- to display personal details -->
<div class="text-center">
<h3>Name : <strong>${registerModel.user.firstname} ${registerModel.user.lastname}</strong></h3>
<h4>Email : <strong>${registerModel.user.email}</strong></h4>
<h4>Contact : <strong>${registerModel.user.contactNumber}</strong></h4>
<h4>Role : <strong>${registerModel.user.role}</strong></h4>
</div>
<!-- anchor tag to move to personal details page to edit -->
<p>
<a href = "${flowExecutionUrl}&_eventId_personal" class = "btn btn-primary">Edit</a>
</p>
</div>
</div>
</div>
<div class = col-sm-6>
<div class = "panel panel-primary">
<div class = "panel-heading">
<h4>Billing Address</h4>
</div>
<div class = "panel-body">
<!-- to display billing address -->
<div class="text-center">
<p>${registerModel.billing.addressLineOne}, </p>
<p>${registerModel.billing.addressLineTwo}, </p>
<p>${registerModel.billing.city} - ${registerModel.billing.postalCode}, </p>
<p>${registerModel.billing.state}</p>
<p>${registerModel.billing.country}</p>
</div>
<!-- anchor tag to move to billing address page to edit -->
<p>
<a href = "${flowExecutionUrl}&_eventId_billing" class = "btn btn-primary">Edit</a>
</p>
</div>
</div>
</div>
<div class = "row">
<div class = "col-sm-4 col-sm-offset-4">
<div class = "text-center">
<!-- anchor tag to move to success page -->
<a href = "${flowExecutionUrl}&_eventId_submit" class = "btn btn-primary">Confirm Submission</a>
</div>
</div>
</div>
</div>
</div>
<!-- footer -->
<%@include file="../shared/flows-footer.jsp"%>
我的signup-flow.xml页面是
<?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.xsd">
<var name = "user" class = "model.entity.User" />
<var name = "billing" class = "model.entity.Address" />
<on-start>
<evaluate expression="'registerHandler.init()'" result = "flowScope.registerModel" />
</on-start>
<!-- start state -->
<view-state id = "personal" view = "flows/register/signup-personal" model = "'user'"><!-- model value is used as modelAttribute in spring form -->
<transition on = "billing" to = "billing" /><!-- to billing view state -->
<on-exit>
<evaluate expression="'registerHandler.addUser(flowScope.registerModel , user)'" />
</on-exit>
</view-state>
<view-state id = "billing" view = "flows/register/signup-billing" model = "'billing'">
<transition on = "personal" to = "personal" />
<transition on = "confirm" to = "confirm" />
<on-exit>
<evaluate expression="'registerHandler.addBilling(flowScope.registerModel , billing)'" />
</on-exit>
</view-state>
<view-state id = "confirm" view = "flows/register/signup-confirm" model = "flowScope.registerModel">
<transition on = "personal" to = "personal" />
<transition on = "billing" to = "billing" />
<transition on = "submit" to = "submit" />
</view-state>
<action-state id="submit">
<evaluate expression="'registerHandler.saveAll(flowScope.registerModel)'" />
<transition on = "success" to = "success" />
</action-state>
<!-- end state -->
<end-state id = "home" view = "externalRedirect:contextRelative:/" />
<end-state id = "success" view = "flows/register/signup-success" />
<!-- global transition -->
<global-transitions>
<transition on = "home" to = "home"/>
</global-transitions>
</flow>
**错误堆栈跟踪是**
错误[io.undertow.request]（默认任务-5）UT005023：对/OnlineShoppingFE/views/flows/register/signup-confirm.jsp的异常处理请求：org.springframework.web.util.NestedServletException：请求处理失败;嵌套异常是org.springframework.webflow.execution.FlowExecutionException：在org.springframework.web异常在org.springframework.web.servlet.FrameworkServlet.processRequest（FrameworkServlet.java:1006）中流动的“注册”状态“确认”抛出.servlet.FrameworkServlet.doGet（FrameworkServlet.java:890）位于org.springframework.web.servlet.FrameworkServlet.service（FrameworkServlet.java:875）的javax.servlet.http.HttpServlet.service（HttpServlet.java:687） javax.servlet.http.HttpServlet.service（HttpServlet.java:790）at io.undertow.servlet.handlers.ServletHandler.handleRequest（ServletHandler.java:74）at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest（ ServletSecurityRoleHandler.java:62）ato.undertow.servlet.handlers.ServletChain $ 1.handleRequest（ServletChain.java:68）atg.wildfly的io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest（ServletDispatchingHandler.java:36）。 extension.undertow.security.SecurityContextAssociationHandle r.handleRequest（SecurityContextAssociationHandler.java:78）at io.undertow.server.handlers.PredicateHandler.handleRequest（PredicateHandler.java:43）at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest（SSLInformationAssociationHandler.java:132）位于io.undertow.security.handle.handle处理的io.undertow.server.handle上的io.undertow.server.handlers.PredicateHandler.handleRequest（PredicateHandler.java:43）中的io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest（ServletAuthenticationCallHandler.java:57）.AbstractConfidentialityHandler .handleRequest（AbstractConfidentialityHandler.java:46）at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest（ServletConfidentialityConstraintHandler.java:64）at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest（AuthenticationMechanismsHandler.java:60）at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest（CachedAuthenticatedSessionHandler .java：77）io.undertow.security.handlers.NotificationReceiverHandler.handleRequest（NotificationReceiverHandler.java:50）at io.undertow.server的io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest（AbstractSecurityContextAssociationHandler.java:43）。 handlers.PredicateHandler.handleRequest（PredicateHandler.java:43）atg.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest（JACCContextIdHandler.java:61）at io.undertow.server.handlers.PredicateHandler.handleRequest（PredicateHandler。 java：43）org.wildfly.extension.undertow.deployment.GlobalRequestControllerHandler.handleRequest（GlobalRequestControllerHandler.java:68）at io.undertow.server.handlers.PredicateHandler.handleRequest（PredicateHandler.java:43）at io.undertow.servlet .handlers.ServletInitialHandler.handleFirstRequest（ServletInitialHandler.java:292）在io.undertow.servlet.handlers.ServletInitialHandler.access $ 100（ServletInitialHandler.java:81）在io.undertow.servlet.handler s.ServletInitialHandler $ 2.call（ServletInitialHandler.java:138）at io.undertow.servlet.handlers.ServletInitialHandler $ 2.call（ServletInitialHandler.java:135）at io.undertow.servlet.core.ServletRequestContextThreadSetupAction $ 1.call（ServletRequestContextThreadSetupAction.java） ：48）在组织的org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda $ create $ 0（SecurityContextThreadSetupAction.java:105）的io.undertow.servlet.core.ContextClassLoaderSetupAction $ 1.call（ContextClassLoaderSetupAction.java:43）。 wildd.extension.undertow.deployment.UndertowDeploymentInfoService $ UndertowThreadSetupAction.lambda $ create $ 0（UndertowDeploymentInfoService.java:1514）org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService $ UndertowThreadSetupAction.lambda $ create $ 0（UndertowDeploymentInfoService.java:1514）at at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService $ UndertowThreadSetupAction.lambda $ create $ 0（UndertowDeploymentInfoService.java:1514）org.wi ldfly.extension.undertow.deployment.UndertowDeploymentInfoService $ UndertowThreadSetupAction.lambda $ create $ 0（UndertowDeploymentInfoService.java:1514）at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest（ServletInitialHandler.java:272）at io.undertow.servlet.handlers .ServletInitialHandler.access $ 000（ServletInitialHandler.java:81）at io.undertow.servlet.handlers.ServletInitialHandler $ 1.handleRequest（ServletInitialHandler.java:104）at io.undertow.server.Connectors.executeRootHandler（Connectors.java:360）at at io.undertow.server.HttpServerExchange $ 1.run（HttpServerExchange.java:830）在org.jboss.threads.ContextClassLoaderSavingRunnable.run（ContextClassLoaderSavingRunnable.java:35）在org.jboss.threads.EnhancedQueueExecutor.safeRun（EnhancedQueueExecutor.java:1985 ）org.jboss.threads.EnhancedQueueExecutor $ ThreadBody.doRunTask（EnhancedQueueExecutor.java:1487）at org.jboss.threads.EnhancedQueueExecutor $ ThreadBody.run（EnhancedQueueExecutor.java:1378）at java.lang.Thread.run（Unknow n源）引起：org.springframework.webflow.execution.FlowExecutionException：在org.springframework.webflow.engine.impl.FlowExecutionImpl.wrap（FlowExecutionImpl.java:573）的流'register'的'confirm'状态中抛出异常at Org.springframework.webflow.engine.impl.FlowExecutionImpl.resume（FlowExecutionImpl.java:263）位于org.springframework.webflow.mvc.servlet的org.springframework.webflow.executor.FlowExecutorImpl.resumeExecution（FlowExecutorImpl.java:169）。位于org.springframework.web.servlet.DispatcherServ。 java.lang.IllegalStateException：.springframework.web.servlet.FrameworkServlet.processRequest（FrameworkServlet.java:998）... 45更致发生异常渲染视图org.springframework.web.servlet.view.JstlView：名称“流/注册/注册-确认“;位于org.springframework.webflow.engine.ViewState.render（ViewState）的org.springframework.webflow.mvc.view.AbstractMvcView.render（AbstractMvcView.java:200）中的URL [/views/flows/register/signup-confirm.jsp] .java：293）org.springframework.webflow.engine.ViewState.refresh（ViewState.java:242）位于org.springframework.webflow的org.springframework.webflow.engine.ViewState.resume（ViewState.java:220）。 engine.Flow.resume（Flow.java:537）at org.springframework.webflow.engine.impl.FlowExecutionImpl.resume（FlowExecutionImpl.java:259）... 50 more引起：org.apache.jasper.JasperException：javax .el.PropertyNotFoundException：类'java.lang.String'没有属性'user'。 org.apache.jache上的org.apache.jasper.servlet.JspServletWrapper.service（JspServletWrapper.java:473）org.apache.jasper.servlet.JspServlet.serviceJspFile（JspServlet.java:403）org.apache.jasper.servlet.JspServlet.service （jspServlet.java:347）位于io.undertow.servlet的io.undertow.servlet.handlers.ServletHandler.handleRequest（ServletHandler.java:74）的javax.servlet.http.HttpServlet.service（HttpServlet.java:790）。 handler.security.ServletSecurityRoleHandler.handleRequest（ServletSecurityRoleHandler.java:62）at io.undertow.jsp.JspFileHandler.handleRequest（JspFileHandler.java:32）at io.undertow.servlet.handlers.ServletChain $ 1.handleRequest（ServletChain.java:68 ）io.undertow.servlet.handle.ServletDispatchingHandler.handleRequest（ServletDispatchingHandler.java:36）at io.undertow.server.handlers.PredicateHandler.handleRequest（PredicateHandler.java:43）at io.undertow.server.handlers.PredicateHandler。 handleRequest（PredicateHandler.java:43）at io.undertow.server.handlers.PredicateHandler.handleRequest（Predi） cateHandler.java:43）io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest（ServletInitialHandler.java:274）at io.undertow.servlet.handlers.ServletInitialHandler.dispatchToPath（ServletInitialHandler.java:209）at io.undertow.servlet .spec.RequestDispatcherImpl.forwardImpl（RequestDispatcherImpl.java:221）at io.undertow.servlet.spec.RequestDispatcherImpl.forwardImplSetup（RequestDispatcherImpl.java:147）at io.undertow.servlet.spec.RequestDispatcherImpl.forward（RequestDispatcherImpl.java:111 ）在org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel（InternalResourceView.java:170）在org.springframework.web.servlet.view.AbstractView.render（AbstractView.java:316）在org.springframework.webflow。 javax.el.PropertyNotFoundException：mvc.servlet.ServletMvcView.doRender（ServletMvcView.java:55）在org.springframework.webflow.mvc.view.AbstractMvcView.render（AbstractMvcView.java:196）...... 55多由此造成的class'java.lang.String'没有该属性“用户”。在javax.el.BeanELResolver.getBeanProperty（BeanELResolver.java:568）的javax.el.BeanELResolver.getValue（BeanELResolver.java:229）at org.apache.jasper.el.JasperELResolver.getValue（JasperELResolver.java:110）at at com.sun.el.parser.AstValue.getValue（AstValue.java:139）com.sun.el.parser.AstValue.getValue（AstValue.java:203）com.sun.el.ValueExpressionImpl.getValue（ValueExpressionImpl。的java：226）在org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate（PageContextImpl.java:917）在org.apache.jsp.views.flows.register.signup_002dconfirm_jsp._jspService（signup_002dconfirm_jsp.java:230）在org.apache .jasper.runtime.HttpJspBase.service（HttpJspBase.java:70）位于org.apache.jasper.servlet.JspServletWrapper.service的javax.servlet.http.HttpServlet.service（HttpServlet.java:790）中（JspServletWrapper.java:433） ）......还有75个
RegisterModel类是
package flow.model;
import java.io.Serializable;
import model.entity.Address;
import model.entity.User;
public class RegisterModel implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
private User user;
private Address billing;
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public Address getBilling() {
return billing;
}
public void setBilling(Address billing) {
this.billing = billing;
}
}
RegisterHandler类
package handler;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import flow.model.RegisterModel;
import model.dao.IUserDAO;
import model.entity.Address;
import model.entity.Cart;
import model.entity.User;
@Component
public class RegisterHandler {
@Autowired
private IUserDAO userDAO;
public RegisterModel init()
{
System.out.println(new RegisterModel().toString());
return (new RegisterModel());
}
public void addUser(RegisterModel registerModel,User user)
{
registerModel.setUser(user);
}
public void addBilling(RegisterModel registerModel,Address billing)
{
registerModel.setBilling(billing);
}
public String saveAll(RegisterModel model)
{
String transitionValue = "success";
//fetch user
User user = model.getUser();
if(user.getRole().equals("ROLE"))
{
Cart cart = new Cart();
cart.setUser(user);
user.setCart(cart);
}
//save user
userDAO.addUser(user);
//get address
Address billing = model.getBilling();
billing.setUserId(user.getId());
billing.setBilling(true);
//save the address
userDAO.addAddress(billing);
return transitionValue;
}
}
我在那里看到了几个可能的误解，但我认为主要的一个是你在属性上使用单引号，你不应该。造成这一特殊问题的原因是：
<evaluate expression="'registerHandler.init()'" result = "flowScope.registerModel" />
你输入flowScope.registerModel，字符串值“registerHandler.init（）”，而不是调用registerHandler.init()的结果。
相反，删除单引号，如下所示：
<evaluate expression="registerHandler.init()" result = "flowScope.registerModel" />
对于后面的引用也是如此：
<view-state id = "billing" view = "flows/register/signup-billing" model = "'billing'">
这也应该没有“结算”的单引号：
<view-state id = "billing" view = "flows/register/signup-billing" model = "billing">
（另外，通过声明<var>s“user”和“billing”，这些会自动放在流范围内，因此您可以直接在JSP中引用它们，如${user.firstname}。）