无法将类java.util.Date的4/23/12 12:00 AM转换为类java.sql.Date

Question

我正在将项目从WebSphere 7迁移到WebSphere 8，并且正在使用JSF 1.2。

我正面临着IBM JSF/html_extended标记以及标准转换器（主要是JSF 1.2核心组件）的问题。我也将我的Java EE版本从5更新到6（这可能不是原因）。最后，还给出了一个组件树。

下面是我的堆栈跟踪：

 
javax.faces.component.UpdateModelException: org.apache.jasper.el.JspELException: /sc40/NewContract.jsp(130,5) '#{pc_NewContract.overrideAsOfDtSQL}' Cannot convert 4/23/12 12:00 AM of type class java.util.Date to class java.sql.Date 
    at javax.faces.component.UIInput.updateModel(UIInput.java:398) 
    at javax.faces.component.UIInput.processUpdates(UIInput.java:299) 
    at javax.faces.component.UIForm.processUpdates(UIForm.java:187) 
    at javax.faces.component.UIComponentBase.processUpdates(UIComponentBase.java:1258) 
    at javax.faces.component.UIComponentBase.processUpdates(UIComponentBase.java:1258) 
    at javax.faces.component.UIViewRoot._processUpdatesDefault(UIViewRoot.java:1321) 
    at javax.faces.component.UIViewRoot.access$600(UIViewRoot.java:75) 
    at javax.faces.component.UIViewRoot$UpdateModelPhaseProcessor.process(UIViewRoot.java:1423) 
    at javax.faces.component.UIViewRoot._process(UIViewRoot.java:1282) 
    at javax.faces.component.UIViewRoot.processUpdates(UIViewRoot.java:765) 
    at org.apache.myfaces.lifecycle.UpdateModelValuesExecutor.execute(UpdateModelValuesExecutor.java:34) 
    at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:171) 
    at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:189) 
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1147) 
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:722) 
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:449) 
    at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178) 
    at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1020) 
    at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3639) 
    at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:304) 
    at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:950) 
    at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1659) 
    at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:195) 
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:452) 
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:511) 
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:305) 
    at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:83) 
    at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165) 
    at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217) 
    at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161) 
    at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138) 
    at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204) 
    at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:816) 
    at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905) 
    at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1648) 
Caused by: org.apache.jasper.el.JspELException: /sc40/NewContract.jsp(130,5) '#{pc_NewContract.overrideAsOfDtSQL}' Cannot convert 4/23/12 12:00 AM of type class java.util.Date to class java.sql.Date 
    at org.apache.jasper.el.JspValueExpression.setValue(JspValueExpression.java:98) 
    at javax.faces.component.UIInput.updateModel(UIInput.java:380) 
    ... 35 more 

Answer 1

重新声明背后#{pc_NewContract.overrideAsOfDtSQL}财产java.util.Date而不是java.sql.Date。根本不应该在模型中使用JDBC特定的数据类型。请注意，java.sql.Date是java.util.Date的子类，因此在DAO中从数据库映射到模型时根本不需要转换它。

Answer 2

有没有改变休眠模型的解决方法。我更喜欢这种方式，因为所有更改都在jsf图层中。

您可以在复合组件中使用绑定。下一个代码是例如具有丰富：日历（使用java.util.Date）

... < CC：接口组件类型= “CalendarComponent” >

... < /立方厘米：接口>

<cc:implementation> 

... <富：历值= “＃{} cc.attrs.value” 绑定= “＃{} cc.attrs.calendar”/ >

...
</CC：实施>

...

和CalendarComponent：

import java.util.Date; 

import javax.faces.component.FacesComponent; 
import javax.faces.component.UINamingContainer; 
import javax.faces.context.FacesContext; 

import org.richfaces.component.UICalendar; 

@FacesComponent(value = "CalendarComponent") 
public class CalendarComponent extends UINamingContainer { 

@Override 
public void processUpdates(FacesContext context) { 

Object o = calendar.getValue(); 
    if (o instanceof Date) { 
    Date d = (Date) o; 
        //this ensures type changing 
     calendar.setValue(new java.sql.Date(d.getTime())); 
} 
    super.processUpdates(context); 
} 

private UICalendar calendar; 

public UICalendar getCalendar() { 
    return calendar; 
} 

public void setCalendar(UICalendar calendar) { 
    this.calendar = calendar; 
} 

}