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我有以下名为 ProcessOrder 的 POJO 类
@Id
@GeneratedValue
private int id;
private String productname;
private int customerid;
private String customerName;
private String shippingAdress;
private int productid;
private int quantity;
private int status;
这个类称为 CartItem
@Id
@GeneratedValue
private int cartItemId;
@ManyToOne
@JoinColumn(name = "cartId")
@JsonIgnore
private Cart cart;
@ManyToOne
@JoinColumn(name = "productId")
private Product product;
private int quantity;
private double totalPrice;
这个类称为 Cart
@Id
@GeneratedValue
private int cartId;
@OneToMany(mappedBy = "cart", cascade = CascadeType.ALL, fetch = FetchType.EAGER)
private List<CartItem> cartItems;
@OneToOne
@JoinColumn(name = "customerId")
@JsonIgnore
private Customer customer;
private double grandTotal;
下面的类称为 CustomerOrder
@Id
@GeneratedValue
private int customerOrderId;
@OneToOne
@JoinColumn(name = "cartId")
private Cart cart;
@OneToOne
@JoinColumn(name = "customerId")
private Customer customer;
@OneToOne
@JoinColumn(name = "billingAddressId")
private BillingAddress billingAddress;
@OneToOne
@JoinColumn(name="shippingAddressId")
private ShippingAddress shippingAddress;
我有更多类(class),但它们与问题无关。
还有一个带有以下 XML 片段的 spring weblfow。
<var name="order" class="com.emusicstore.model.CustomerOrder" />
<action-state id="processOrder">
<evaluate expression="CartItemDaoImpl.removeAllCartItemsCart(order.cart)" />
<transition to="thankCustomer" />
而CartItemDaoImpl中的removeAllCartItemsCart函数如下
public void removeAllCartItemsCart(Cart cart) {
List<CartItem> cartItems = cart.getCartItems();
Session session = sessionFactory.getCurrentSession();
int cusid = cart.getCustomer().getCustomerId();
System.out.println(cusid);
for (CartItem item : cartItems) {
int pid = item.getProduct().getProductId();
Query query=session.createQuery("from ProcessOrder where customerid= ? and productid= ?");
query.setInteger(0, cusid);
query.setInteger(1, pid);
ProcessOrder pOrder1 =(ProcessOrder) query.uniqueResult();
if(pOrder1!=null){
pOrder1.setStatus(5);
session.saveOrUpdate(pOrder1);
}
//query.executeUpdate();
removeCartItem(item);
}
}
运行此命令会出现一个异常(exception)情况,我附上了屏幕截图。我想不出办法摆脱它。从网络流调用函数后是否可以连接到数据库?
编辑 1
以下是堆栈跟踪
SEVERE: Servlet.service() for servlet [dispatcher] in context with path [/emusicstore] threw exception [Request processing failed; nested exception is org.springframework.webflow.execution.ActionExecutionException: Exception thrown executing [AnnotatedAction@6c10bd32 targetAction = [EvaluateAction@4ff1de7f expression = CartItemDaoImpl.removeAllCartItemsCart(order.cart), resultExpression = [null]], attributes = map[[empty]]] in state 'processOrder' of flow 'checkout' -- action execution attributes were 'map[[empty]]'] with root cause
org.springframework.expression.spel.SpelEvaluationException: EL1008E:(pos 0): Property or field 'CartItemDaoImpl' cannot be found on object of type 'org.springframework.webflow.engine.impl.RequestControlContextImpl' - maybe not public?
at org.springframework.expression.spel.ast.PropertyOrFieldReference.readProperty(PropertyOrFieldReference.java:226)
at org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:93)
at org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:81)
at org.springframework.expression.spel.ast.CompoundExpression.getValueRef(CompoundExpression.java:51)
at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:87)
at org.springframework.expression.spel.ast.SpelNodeImpl.getTypedValue(SpelNodeImpl.java:131)
at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:299)
at org.springframework.binding.expression.spel.SpringELExpression.getValue(SpringELExpression.java:84)
at org.springframework.webflow.action.EvaluateAction.doExecute(EvaluateAction.java:75)
at org.springframework.webflow.action.AbstractAction.execute(AbstractAction.java:188)
at org.springframework.webflow.execution.AnnotatedAction.execute(AnnotatedAction.java:145)
at org.springframework.webflow.execution.ActionExecutor.execute(ActionExecutor.java:51)
at org.springframework.webflow.engine.ActionState.doEnter(ActionState.java:101)
at org.springframework.webflow.engine.State.enter(State.java:194)
at org.springframework.webflow.engine.Transition.execute(Transition.java:227)
at org.springframework.webflow.engine.impl.FlowExecutionImpl.execute(FlowExecutionImpl.java:393)
at org.springframework.webflow.engine.impl.RequestControlContextImpl.execute(RequestControlContextImpl.java:214)
at org.springframework.webflow.engine.TransitionableState.handleEvent(TransitionableState.java:119)
at org.springframework.webflow.engine.Flow.handleEvent(Flow.java:555)
at org.springframework.webflow.engine.impl.FlowExecutionImpl.handleEvent(FlowExecutionImpl.java:388)
at org.springframework.webflow.engine.impl.RequestControlContextImpl.handleEvent(RequestControlContextImpl.java:210)
at org.springframework.webflow.engine.ViewState.handleEvent(ViewState.java:232)
at org.springframework.webflow.engine.ViewState.resume(ViewState.java:196)
at org.springframework.webflow.engine.Flow.resume(Flow.java:545)
at org.springframework.webflow.engine.impl.FlowExecutionImpl.resume(FlowExecutionImpl.java:258)
at org.springframework.webflow.executor.FlowExecutorImpl.resumeExecution(FlowExecutorImpl.java:169)
at org.springframework.webflow.mvc.servlet.FlowHandlerAdapter.handle(FlowHandlerAdapter.java:183)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
编辑2
CartItemDaoImpl
package com.emusicstore.dao.impl;
import com.emusicstore.dao.CartItemDao;
import com.emusicstore.model.Cart;
import com.emusicstore.model.CartItem;
import com.emusicstore.model.ProcessOrder;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;
import java.util.List;
@Repository
@Transactional
public class CartItemDaoImpl implements CartItemDao{
@Autowired
private SessionFactory sessionFactory;
public void addCartItem(CartItem cartItem) {
Session session = sessionFactory.getCurrentSession();
session.saveOrUpdate(cartItem);
session.flush();
}
public void removeCartItem (CartItem cartItem) {
Session session = sessionFactory.getCurrentSession();
session.delete(cartItem);
session.flush();
}
public void removeAllCartItemsCart(Cart cart) {
List<CartItem> cartItems = cart.getCartItems();
Session session = sessionFactory.getCurrentSession();
int cusid = cart.getCustomer().getCustomerId();
System.out.println(cusid);
for (CartItem item : cartItems) {
int pid = item.getProduct().getProductId();
Query query=session.createQuery("from ProcessOrder where customerid= ? and productid= ?");
query.setInteger(0, cusid);
query.setInteger(1, pid);
ProcessOrder pOrder1 =(ProcessOrder) query.uniqueResult();
if(pOrder1!=null){
pOrder1.setStatus(5);
session.saveOrUpdate(pOrder1);
}
//query.executeUpdate();
removeCartItem(item);
}
}
public void removeAllCartItems(Cart cart) {
List<CartItem> cartItems = cart.getCartItems();
for (CartItem item : cartItems) {
removeCartItem(item);
}
}
public CartItem getCartItemByProductId (int productId) {
Session session = sessionFactory.getCurrentSession();
Query query = session.createQuery("from CartItem where productId = ?");
query.setInteger(0, productId);
session.flush();
return (CartItem) query.uniqueResult();
}
}
编辑3
以下是更改 webflow xml 文件中 cartItemDaoImpl 中 c 的大小写后的堆栈跟踪
SEVERE: Servlet.service() for servlet [dispatcher] in context with path [/emusicstore] threw exception [Request processing failed; nested exception is org.springframework.webflow.execution.ActionExecutionException: Exception thrown executing [AnnotatedAction@29b58b72 targetAction = [EvaluateAction@37f210b1 expression = cartItemDaoImpl.removeAllCartItemsCart(order.cart), resultExpression = [null]], attributes = map[[empty]]] in state 'processOrder' of flow 'checkout' -- action execution attributes were 'map[[empty]]'] with root cause
org.springframework.expression.spel.SpelEvaluationException: EL1004E:(pos 16): Method call: Method removeAllCartItemsCart(com.emusicstore.model.Cart) cannot be found on com.sun.proxy.$Proxy60 type
at org.springframework.expression.spel.ast.MethodReference.findAccessorForMethod(MethodReference.java:211)
at org.springframework.expression.spel.ast.MethodReference.getValueInternal(MethodReference.java:125)
at org.springframework.expression.spel.ast.MethodReference.access$000(MethodReference.java:49)
at org.springframework.expression.spel.ast.MethodReference$MethodValueRef.getValue(MethodReference.java:342)
at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:88)
at org.springframework.expression.spel.ast.SpelNodeImpl.getTypedValue(SpelNodeImpl.java:131)
at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:299)
at org.springframework.binding.expression.spel.SpringELExpression.getValue(SpringELExpression.java:84)
at org.springframework.webflow.action.EvaluateAction.doExecute(EvaluateAction.java:75)
at org.springframework.webflow.action.AbstractAction.execute(AbstractAction.java:188)
at org.springframework.webflow.execution.AnnotatedAction.execute(AnnotatedAction.java:145)
at org.springframework.webflow.execution.ActionExecutor.execute(ActionExecutor.java:51)
at org.springframework.webflow.engine.ActionState.doEnter(ActionState.java:101)
at org.springframework.webflow.engine.State.enter(State.java:194)
at org.springframework.webflow.engine.Transition.execute(Transition.java:227)
at org.springframework.webflow.engine.impl.FlowExecutionImpl.execute(FlowExecutionImpl.java:393)
at org.springframework.webflow.engine.impl.RequestControlContextImpl.execute(RequestControlContextImpl.java:214)
at org.springframework.webflow.engine.TransitionableState.handleEvent(TransitionableState.java:119)
at org.springframework.webflow.engine.Flow.handleEvent(Flow.java:555)
at org.springframework.webflow.engine.impl.FlowExecutionImpl.handleEvent(FlowExecutionImpl.java:388)
at org.springframework.webflow.engine.impl.RequestControlContextImpl.handleEvent(RequestControlContextImpl.java:210)
at org.springframework.webflow.engine.ViewState.handleEvent(ViewState.java:232)
at org.springframework.webflow.engine.ViewState.resume(ViewState.java:196)
at org.springframework.webflow.engine.Flow.resume(Flow.java:545)
at org.springframework.webflow.engine.impl.FlowExecutionImpl.resume(FlowExecutionImpl.java:258)
at org.springframework.webflow.executor.FlowExecutorImpl.resumeExecution(FlowExecutorImpl.java:169)
at org.springframework.webflow.mvc.servlet.FlowHandlerAdapter.handle(FlowHandlerAdapter.java:183)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
以下是 spring webflow xml 文件
<?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">
<var name="order" class="com.emusicstore.model.CustomerOrder" />
<action-state id="addCartToOrder">
<evaluate expression="cartDaoImpl.validate(requestParameters.cartId)" result="order.cart" />
<transition to="InvalidCartWarning" on-exception="java.io.IOException" />
<transition to="collectCustomerInfo" />
</action-state>
<view-state id="collectCustomerInfo" view="collectCustomerInfo.jsp" model="order">
<transition on="customerInfoCollected" to="collectShippingDetail" />
</view-state>
<view-state id="collectShippingDetail" view="collectShippingDetail.jsp" model="order">
<transition on="shippingDetailCollected" to="orderConfirmation" />
<transition on="backToCollectCustomerInfo" to="collectCustomerInfo" />
</view-state>
<view-state id="orderConfirmation">
<transition on="orderConfirmed" to="processOrder" />
<transition on="backToCollectShippingDetail" to="collectShippingDetail" />
</view-state>
<action-state id="processOrder">
<evaluate expression="cartItemDaoImpl.removeAllCartItemsCart(order.cart)" />
<transition to="thankCustomer" />
</action-state>
<view-state id="thankCustomer" model="order">
<transition to="endState" />
</view-state>
<end-state id="endState" />
<view-state id="invalidCartWarning">
<transition to="endState" />
</view-state>
<end-state id="cancelCheckout" view="checkOutCancelled.jsp" />
<global-transitions>
<transition on="cancel" to="cancelCheckout" />
</global-transitions>
</flow>
另外,我只是想强调一下,如果我只是将removeAllCartItemsCart 方法更改为
public void removeAllCartItemsCart(Cart cart) {
List<CartItem> cartItems = cart.getCartItems();
for (CartItem item : cartItems) {
removeCartItem(item);
}
}
效果很好。所以我猜这与我尝试在那里执行查询有关。
最佳答案
注释@Repository
正在创建一个默认名称为cartItemDaoImpl
的bean。
您可以了解默认命名约定 here .
所以,你应该使用
<evaluate expression="cartItemDaoImpl.removeAllCartItemsCart(order.cart)" />
以小写c
开头
或者保留代码,但将注释更改为@Repository("CartItemDaoImpl")
[更新]
您现在遇到了不同的问题。您正在使用 @Transactional,但使用 Spring AOP,由于代理,方面仅当它们位于接口(interface)中存在的方法上时才会起作用。
所以您现在要做的就是将 void removeAllCartItemsCart(Cart cart);
添加到您的界面 CartItemDao
中。
关于java - 从Spring Webflow调用函数存储在数据库(MySQL)中,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/43967803/
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CSng 函数 返回表达式,该表达式已被转换为 Single 子类型的 Variant。 CSng(expression) expression 参数是任意有效的表达式。 说明 通常,可
CreateObject 函数 创建并返回对 Automation 对象的引用。 CreateObject(servername.typename [, location]) 参数 serv
Cos 函数 返回某个角的余弦值。 Cos(number) number 参数可以是任何将某个角表示为弧度的有效数值表达式。 说明 Cos 函数取某个角并返回直角三角形两边的比值。此比值是
CLng 函数 返回表达式,此表达式已被转换为 Long 子类型的 Variant。 CLng(expression) expression 参数是任意有效的表达式。 说明 通常,您可以使
CInt 函数 返回表达式,此表达式已被转换为 Integer 子类型的 Variant。 CInt(expression) expression 参数是任意有效的表达式。 说明 通常,可
Chr 函数 返回与指定的 ANSI 字符代码相对应的字符。 Chr(charcode) charcode 参数是可以标识字符的数字。 说明 从 0 到 31 的数字表示标准的不可打印的
CDbl 函数 返回表达式,此表达式已被转换为 Double 子类型的 Variant。 CDbl(expression) expression 参数是任意有效的表达式。 说明 通常,您可
CDate 函数 返回表达式,此表达式已被转换为 Date 子类型的 Variant。 CDate(date) date 参数是任意有效的日期表达式。 说明 IsDate 函数用于判断 d
CCur 函数 返回表达式,此表达式已被转换为 Currency 子类型的 Variant。 CCur(expression) expression 参数是任意有效的表达式。 说明 通常,
CByte 函数 返回表达式,此表达式已被转换为 Byte 子类型的 Variant。 CByte(expression) expression 参数是任意有效的表达式。 说明 通常,可以
CBool 函数 返回表达式,此表达式已转换为 Boolean 子类型的 Variant。 CBool(expression) expression 是任意有效的表达式。 说明 如果 ex
Atn 函数 返回数值的反正切值。 Atn(number) number 参数可以是任意有效的数值表达式。 说明 Atn 函数计算直角三角形两个边的比值 (number) 并返回对应角的弧
Asc 函数 返回与字符串的第一个字母对应的 ANSI 字符代码。 Asc(string) string 参数是任意有效的字符串表达式。如果 string 参数未包含字符,则将发生运行时错误。
Array 函数 返回包含数组的 Variant。 Array(arglist) arglist 参数是赋给包含在 Variant 中的数组元素的值的列表(用逗号分隔)。如果没有指定此参数,则
Abs 函数 返回数字的绝对值。 Abs(number) number 参数可以是任意有效的数值表达式。如果 number 包含 Null,则返回 Null;如果是未初始化变量,则返回 0。
FormatPercent 函数 返回表达式,此表达式已被格式化为尾随有 % 符号的百分比(乘以 100 )。 FormatPercent(expression[,NumDigitsAfterD
FormatNumber 函数 返回表达式,此表达式已被格式化为数值。 FormatNumber( expression [,NumDigitsAfterDecimal [,Inc
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