Question

我是JSF和RichFaces的新手。我有一个按钮，应该调用bean上的方法。当我使用

<h:commandButton action="#{loginBean.userLogin}" value="Login" />

它工作正常，但当我点击

<a4j:commandButton action="#{loginBean.userLogin}" value="Login" />

没有任何反应。

我的bean代码：

public class LoginBean {

@Size(min = 2, max = 20, message = "Must be betwen 2 and 20 chars")
private String          login;
@Size(min = 1, message = "Please Enter your password")
private String          password;

//getters and setters

public String userLogin() {
    //user login code

}
}

我的JSP页面代码：

<body>
<f:view>
<div >
   <h:form id="loginForm">
       <h:panelGrid columns="3">
           <h:outputLabel for="login" value="Login:" />
           <h:inputText id="login" value="#{loginBean.login}" >

           </h:inputText>
           <rich:message for="login" />

           <h:outputLabel for="password" value="Password:" />
           <h:inputSecret id="password" value="#{loginBean.password}" />
           <rich:message for="password" />
       </h:panelGrid>

        <div>
            <h:commandButton action="#{loginBean.login}" value="Login" />
            <a4j:commandButton action="#{loginBean.login}" value="Login" />
        </div>
        <div>
            <a href="<%= request.getContextPath() %>/registration.jsf">Registration</a>
        </div>
    </h:form>
</div>
</f:view>
</body>

所以你可以看到我甚至添加了两个按钮。一个工作正常，第二个没有做任何事情。

UPD：我最初没有使用RichFaces，我的应用程序运行正常。所以我猜导航规则等都很好。不起作用的是a4j：我刚刚添加的commandButton。

UPD2：这是我的web.xml：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" version="2.5" 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-app_2_5.xsd">

<display-name>webappsaichuk</display-name>
<welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
</welcome-file-list>

<servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.jsf</url-pattern>
</servlet-mapping>

<servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>/faces/*</url-pattern>
</servlet-mapping>

<listener>
    <listener-class>com.sun.faces.config.ConfigureListener</listener-class>
</listener>

Answer 1

您的方法必须与您的属性具有不同的名称。

public class LoginBean {

    @Size(min = 2, max = 20, message = "Must be betwen 2 and 20 chars")
    private String login;
    @Size(min = 1, message = "Please Enter your password")
    private String password;

    //getters and setters...

    public String userLogin() {
        //user login code
    }
}

<h:inputText id="login" value="#{loginBean.login}" styleClass="rowInput">
<h:commandButton action="#{loginBean.userLogin}" value="Login" />
<a4j:commandButton action="#{loginBean.userLogin}" value="Login" />

更新

您应该将RichFaces过滤器添加到web.xml（基于Getting started with RichFaces）：

<!-- some context params to get better performance for RichFaces -->
<context-param>
    <param-name>org.ajax4jsf.COMPRESS_SCRIPT</param-name>
    <param-value>true</param-value>
</context-param>
<context-param>
    <param-name>org.ajax4jsf.SKIN</param-name>
    <param-value>classic</param-value>
</context-param>
<context-param>
    <param-name>org.ajax4jsf.handleViewExpiredOnClient</param-name>
    <param-value>true</param-value>
</context-param>
<context-param>
    <param-name>org.richfaces.LoadScriptStrategy</param-name>
    <param-value>ALL</param-value>
</context-param>
<context-param>
    <param-name>org.richfaces.LoadStyleStrategy</param-name>
    <param-value>ALL</param-value>
</context-param>
<!-- main filter for RichFaces -->
<filter>
    <display-name>Ajax4jsf Filter</display-name>
    <filter-name>ajax4jsf</filter-name>
    <filter-class>org.ajax4jsf.Filter</filter-class>
</filter>

<filter-mapping>
    <filter-name>ajax4jsf</filter-name>
    <servlet-name>Faces Servlet</servlet-name>
    <dispatcher>REQUEST</dispatcher>
    <dispatcher>FORWARD</dispatcher>
    <dispatcher>INCLUDE</dispatcher>
</filter-mapping>

Answer 2

a4j：commandButton是一个ajax提交。因此，除非您根据操作重新渲染已更改的部分屏幕，否则不会发生任何事情。

a4j：commandButton不起作用

2 个答案: