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我無法獲取我在ManagedBean的xhtml頁面上輸入的用戶名和密碼值。未在Managed Bean中獲取文本框值
這就是爲什麼我在告別方法得到的NullPointerException當我檢查用戶名和密碼
Login.xhtml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.org/ui" xmlns:lang="en">
<f:view>
<head>
<title>Test Client Login</title>
</head>
<h:form id="loginForm">
<table align="center" border="1" style="padding-top: 100px">
<tr>
<td><h:outputLabel for="username2">
<h:outputText id="usernameLabel" value="Enter Username:" />
</h:outputLabel>
</td>
<td><h:inputText id="username" value="#{loginBean.username}"
required="true">
<f:validateLongRange minimum="1" maximum="500" />
</h:inputText>
</td>
</tr>
<tr>
<td>
<h:outputLabel for="password2">
<h:outputText id="passwordLabel" value="Enter Password:" />
</h:outputLabel></td>
<td><h:inputText id="password" value="#{loginBean.password}"
required="true">
<f:validateLongRange minimum="1" maximum="500" />
</h:inputText></td>
</tr>
<tr>
<td colspan="2">
<h:commandButton id="goodbyeCommand" type="submit" value="submit"
action="#{loginBean.goodbye}" immediate="true" />
</td>
</tr>
</table>
</h:form>
</f:view>
</html>
LoginBean.java
package com.example.ws.ui;
import org.apache.log4j.Logger;
/**
* Managed Bean for Login
*
*/
public class LoginBean {
private static final Logger logger = Logger.getLogger(LoginBean.class);
//EbzWS userManager;
private String username;
private String password;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String goodbye() {
/* try {
userManager.getEbzById("asdad", "asdad");
logger.info("method called");
} catch (ServiceException e) {
System.out.println(e);
}*/
String dest = "failure";
if(username.equals("sunny") && password.equals("sunny")){
dest = "success";
}
return dest;
}
/*public EbzWS getUserManager() {
return userManager;
}
public void setUserManager(EbzWS userManager) {
this.userManager = userManager;
}*/
}
faces-config.xml
<?xml version="1.0"?>
<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">
<managed-bean>
<description>Login Bean</description>
<managed-bean-name>loginBean</managed-bean-name>
<managed-bean-class>com.example.ws.ui.LoginBean</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
</managed-bean>
<managed-bean>
<description>EBZ Bean</description>
<managed-bean-name>getEbzByIdBean</managed-bean-name>
<managed-bean-class>com.example.ws.ui.GetEbzByIdBean</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>
<managed-bean>
<description>WsListing Bean</description>
<managed-bean-name>wsListingBean</managed-bean-name>
<managed-bean-class>com.example.ws.ui.WsListingBean</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>
<navigation-rule>
<description>Navigation from the hello page.</description>
<from-view-id>/login.xhtml</from-view-id>
<navigation-case>
<from-outcome>success</from-outcome>
<to-view-id>/wsListing.xhtml</to-view-id>
<redirect />
</navigation-case>
<navigation-case>
<from-outcome>failure</from-outcome>
<to-view-id>/failure.xhtml</to-view-id>
<redirect />
</navigation-case>
</navigation-rule>
<navigation-rule>
<description>Navigation from the hello page.</description>
<from-view-id>/wsListing.xhtml</from-view-id>
<navigation-case>
<from-outcome>ebzService</from-outcome>
<to-view-id>/ebzinput.xhtml</to-view-id>
<redirect />
</navigation-case>
<navigation-case>
<from-outcome>filterEbz</from-outcome>
<to-view-id>/filterebzinput.xhtml</to-view-id>
<redirect />
</navigation-case>
</navigation-rule>
<navigation-rule>
<description>Navigation from the hello page.</description>
<from-view-id>/ebzinput.xhtml</from-view-id>
<navigation-case>
<from-outcome>success</from-outcome>
<to-view-id>/ebzoutput.xhtml</to-view-id>
<redirect />
</navigation-case>
</navigation-rule>
<application>
<variable-resolver>org.springframework.web.jsf.DelegatingVariableResolver</variable-resolver>
<locale-config>
<default-locale>en</default-locale>
<supported-locale>en</supported-locale>
<supported-locale>es</supported-locale>
</locale-config>
<message-bundle>messages</message-bundle>
</application>
</faces-config>
能告訴我們您正在使用的JSF版本.. ???你也可以展示你如何定義Managed Bean .. ?? – Mango
@Mango請在附件中找到faces-config.xml –