从 Spring Webflow 调用函数存储在数据库中(MySQL)
Calling a function from Spring Webflow to store in Database(MySQL)
我有以下名为 ProcessOrder
的 POJO class
@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;
而这个 class 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 class 叫做购物车
@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;
以下class调用了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 class 但它们与问题无关。
还有一个 spring weblfow，其中包含以下 XML 片段。
<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 这给了我一个例外，我附上了截图。我想不出摆脱它的方法。从webflow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
以下是在 webflow xml 文件
中的 cartItemDaoImpl 中更改 c 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[=20=]0(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>
此外，我只想强调，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。所以我猜这与我试图在那里执行查询有关。
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)" />
以小写开头c
或保留您的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，只有当它们位于接口中由于代理而存在的方法上时，Aspects 才会工作。
所以您现在要做的是将 void removeAllCartItemsCart(Cart cart); 添加到您的界面 CartItemDao。
我有以下名为 ProcessOrder
的 POJO class@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;
而这个 class 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 class 叫做购物车
@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;
以下class调用了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 class 但它们与问题无关。
还有一个 spring weblfow，其中包含以下 XML 片段。
<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 这给了我一个例外，我附上了截图。我想不出摆脱它的方法。从webflow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
以下是在 webflow xml 文件
中的 cartItemDaoImpl 中更改 c 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[=20=]0(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>
此外，我只想强调，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。所以我猜这与我试图在那里执行查询有关。
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)" />
以小写开头c
或保留您的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，只有当它们位于接口中由于代理而存在的方法上时，Aspects 才会工作。
所以您现在要做的是将 void removeAllCartItemsCart(Cart cart); 添加到您的界面 CartItemDao。