在托管bean的方法里用了session.setAttribute,程序就出错.......
 |
pcenshao
2010-06-02
这是托管bean的代码
package pcenshao.pet_store.mbean;
import java.util.Map;
import javax.faces.context.FacesContext;
import pcenshao.pet_store.Grobal;
import pcenshao.pet_store.SpringUtil;
import pcenshao.pet_store.entity.Adopter;
import pcenshao.pet_store.service.AdopterService;
import pcenshao.pet_store.vo.AdopterVO;
public class AdopterLogin {
private Adopter ad;
private AdopterService as;
private String msg;
public AdopterLogin(){
this.ad = new Adopter();
this.as = (AdopterService)SpringUtil
.getApplicationContext()
.getBean("adopterService");
}
public String login(){
if(this.as.login(ad)){
Map<String,Object> s=
FacesContext.getCurrentInstance()
.getExternalContext()
.getSessionMap();
s.put(Grobal.Type, Grobal.TypeAdopter);
s.put(Grobal.User, ad);
return "success";
}
this.setMsg("用户名或密码错误");
return "";
}
public void setMsg(String msg) {
this.msg = msg;
}
public String getMsg() {
return msg;
}
public void setAd(Adopter ad) {
this.ad = ad;
}
public Adopter getAd() {
return ad;
}
}
下面是faces-config.xml <?xml version='1.0' encoding='UTF-8'?> <faces-config xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd" version="1.2"> <!-- <lifecycle> <phase-listener> </phase-listener> </lifecycle> --> <managed-bean> <managed-bean-name>al</managed-bean-name> <managed-bean-class>pcenshao.pet_store.mbean.AdminLogin</managed-bean-class> <managed-bean-scope>request</managed-bean-scope> </managed-bean> <managed-bean> <managed-bean-name>ah</managed-bean-name> <managed-bean-class>pcenshao.pet_store.mbean.AdminHome</managed-bean-class> <managed-bean-scope>session</managed-bean-scope> </managed-bean> <managed-bean> <managed-bean-name>h</managed-bean-name> <managed-bean-class>pcenshao.pet_store.mbean.Home</managed-bean-class> <managed-bean-scope>request</managed-bean-scope> </managed-bean> <managed-bean> <managed-bean-name>r</managed-bean-name> <managed-bean-class>pcenshao.pet_store.mbean.Reg</managed-bean-class> <managed-bean-scope>request</managed-bean-scope> </managed-bean> <managed-bean> <managed-bean-name>l</managed-bean-name> <managed-bean-class>pcenshao.pet_store.mbean.AdopterLogin</managed-bean-class> <managed-bean-scope>request</managed-bean-scope> </managed-bean> <navigation-rule> <from-view-id>/admin/al.jsp</from-view-id> <navigation-case> <from-outcome>adminHome</from-outcome> <to-view-id>/admin/ah.jsp</to-view-id> </navigation-case> </navigation-rule> <navigation-rule> <from-view-id>/login.jsp</from-view-id> <navigation-case> <from-outcome>success</from-outcome> <to-view-id>/h.jsp</to-view-id> </navigation-case> </navigation-rule> </faces-config> 下面是错误信息 javax.servlet.ServletException: Not a Valid Method Expression: javax.faces.webapp.FacesServlet.service(FacesServlet.java:256) root cause javax.el.ELException: Not a Valid Method Expression: org.apache.el.lang.ExpressionBuilder.createMethodExpression(ExpressionBuilder.java:209) org.apache.el.ExpressionFactoryImpl.createMethodExpression(ExpressionFactoryImpl.java:57) org.apache.jsp.h_jsp._jspx_meth_h_005fcommandButton_005f0(h_jsp.java:954) org.apache.jsp.h_jsp._jspx_meth_h_005fcolumn_005f4(h_jsp.java:865) org.apache.jsp.h_jsp._jspx_meth_c_005fif_005f1(h_jsp.java:824) org.apache.jsp.h_jsp._jspx_meth_h_005fdataTable_005f0(h_jsp.java:291) org.apache.jsp.h_jsp._jspx_meth_h_005fform_005f0(h_jsp.java:229) org.apache.jsp.h_jsp._jspx_meth_f_005fview_005f0(h_jsp.java:157) org.apache.jsp.h_jsp._jspService(h_jsp.java:114) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:428) com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:444) com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:116) com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106) com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251) com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144) javax.faces.webapp.FacesServlet.service(FacesServlet.java:245) 我实在是搞不明白了 如果我把AdopterLogin类里的login方法里的s.put(Grobal.User, ad);去掉 就没有错 为什么呀??真是郁闷 |
|
terryzhou
2010-06-02
JSP呢？页面报错，你咋光贴BEAN
|
|
pcenshao
2010-06-03
terryzhou 写道 JSP呢？页面报错，你咋光贴BEAN
以下便是jsp文件关键部分 <f:view>
<center>
<h:form>
<h:outputText value="#{login.msg}" style="color:red"></h:outputText>
<h:panelGrid columns="2">
<f:facet name="header">
<h:outputText value="领养者登录"></h:outputText>
</f:facet>
<h:outputText value="用户名:" ></h:outputText>
<h:inputText value="#{login.ad.name}" id="name" required="true"></h:inputText>
<h:outputText value="密 码:"></h:outputText>
<h:inputSecret value="#{login.ad.password}" id="password" required="true" ></h:inputSecret>
</h:panelGrid>
<h:panelGroup >
<h:commandButton value="登录" action="#{login.login}"></h:commandButton>
</h:panelGroup>
<h:panelGroup>
<h:message for="name"></h:message>
<h:message for="password"></h:message>
</h:panelGroup>
</h:form>
</center>
</f:view>
|
|
terryzhou
2010-06-03
是不是h.jsp?
最好 全部 贴上来 s.put(Grobal.User, ad); 换成 s.put(Grobal.User, null); 报错么？ |
|
pcenshao
2010-06-03
terryzhou 写道 是不是h.jsp?
最好 全部 贴上来 s.put(Grobal.User, ad); 换成 s.put(Grobal.User, null); 报错么？ 不报 |
|
terryzhou
2010-06-03
<navigation-rule>
<from-view-id>/login.jsp</from-view-id> <navigation-case> <from-outcome>success</from-outcome> <to-view-id>/h.jsp</to-view-id> </navigation-case> </navigation-rule> are you sure? 你帖的是login.jsp? 报错的是h.jsp |
|
pcenshao
2010-06-03
terryzhou 写道 <navigation-rule>
<from-view-id>/login.jsp</from-view-id> <navigation-case> <from-outcome>success</from-outcome> <to-view-id>/h.jsp</to-view-id> </navigation-case> </navigation-rule> are you sure? 你帖的是login.jsp? 报错的是h.jsp 我是后来改成login.jsp的 貌似我试的时候跟这没关系 |
|
terryzhou
2010-06-04
异常信息显示的BUTTON里的ACTION或ACTIONLISTENER表达式不合法（方法不存在）。
和你描述的问题不同。 应该是LOGIN.JSP-->LOGIN.LOGIN-->用户登录成功-->H.JSP（报错）。 你如果改了啥，就把改之后的两个页面，一个BEAN,faces-config贴上来 |
|
pcenshao
2010-06-04
terryzhou 写道 异常信息显示的BUTTON里的ACTION或ACTIONLISTENER表达式不合法（方法不存在）。
和你描述的问题不同。 应该是LOGIN.JSP-->LOGIN.LOGIN-->用户登录成功-->H.JSP（报错）。 你如果改了啥，就把改之后的两个页面，一个BEAN,faces-config贴上来 bean是一样的 只是faces-config.xml里配置的bean名字不一样 不过bean名字跟jsp上的bean名字是对应的 |
|
terryzhou
2010-06-04
org.apache.jsp.h_jsp._jspx_meth_h_005fcommandButton_005f0(h_jsp.java:954) org.apache.jsp.h_jsp._jspx_meth_h_005fcolumn_005f4(h_jsp.java:865) org.apache.jsp.h_jsp._jspx_meth_c_005fif_005f1(h_jsp.java:824) org.apache.jsp.h_jsp._jspx_meth_h_005fdataTable_005f0(h_jsp.java:291) org.apache.jsp.h_jsp._jspx_meth_h_005fform_005f0(h_jsp.java:229) org.apache.jsp.h_jsp._jspx_meth_f_005fview_005f0(h_jsp.java:157) org.apache.jsp.h_jsp._jspService(h_jsp.java:114) <navigation-case>
<from-outcome>success</from-outcome>
<to-view-id>/h.jsp</to-view-id>
</navigation-case> 之前就说了，是h.jsp里报的错,和你帖的这页面没关系，跟你改不改BEAN名字更没关系 |
