使用JSF处理表单验证

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JSF Bean Servlet JSP SUN

web.xml

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="2.4"

xmlns="http://java.sun.com/xml/ns/j2ee"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee

http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

<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>*.faces</url-pattern>

</servlet-mapping>

<welcome-file-list>

<welcome-file>index.jsp</welcome-file>

</welcome-file-list>

</web-app>

face-config.xml

<?xml version="1.0"?>

<!DOCTYPE faces-config PUBLIC

"-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.0//EN"

"http://java.sun.com/dtd/web-facesconfig_1_0.dtd">

<faces-config>

<locale-config>

<default-locale>en</default-locale>

<supported-locale>zh_CN</supported-locale>

</locale-config>

</application>

<navigation-rule>

<from-view-id>/index.jsp</from-view-id>

<navigation-case>

<from-outcome>success</from-outcome>

<to-view-id>/welcome.jsp</to-view-id>

</navigation-case>

<navigation-case>

<from-outcome>failure</from-outcome>

<to-view-id>/index.jsp</to-view-id>

</navigation-case>

</navigation-rule>

<managed-bean>

<managed-bean-name>user</managed-bean-name>

<managed-bean-class>test.UserBean</managed-bean-class>

<managed-bean-scope>session</managed-bean-scope>

</managed-bean>

</faces-config>

JavaBean:

package test;

public class UserBean {

private String username;

private String password;

private String errorMessage;

private String locale;

public String getLocale() {

return locale;

}

public void setLocale(String locale) {

this.locale = locale;

}

public String verify() {

if(!username.equals("admin") ||

!password.equals("123456")) {

errorMessage = "名称或密码错误";

return "failure";

}

else {

return "success";

}

public String getPassword() {

return password;

}

public void setPassword(String password) {

this.password = password;

}

public String getErrorMessage() {

return errorMessage;

}

public void setErrorMessage(String errorMessage) {

this.errorMessage = errorMessage;

}

public String getUsername() {

return username;

}

public void setUsername(String username) {

this.username = username;

}

index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>

<%@taglib uri="http://java.sun.com/jsf/core" prefix="f" %>

<%@taglib uri="http://java.sun.com/jsf/html" prefix="h" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

</head>

<body>

<f:view>

<h:form>

<h:selectOneRadio value="#{user.locale}">

<f:selectItem itemValue="zh_CN" itemLabel="中国" />

<f:selectItem itemValue="en" itemLabel="英国" />

</h:selectOneRadio>

<h:messages layout="table" style="color:red"/>

<h3>请输入您的名称</h3>

名称: <h:inputText value="#{user.username}" required="true" requiredMessage="名称必须输入"/><p>

密码: <h:inputSecret value="#{user.password}" required="true" requiredMessage="密码必须输入" validatorMessage="长度必须大于6位">

<f:validateLength minimum="6"/>

</h:inputSecret><p>

<h:commandButton value="送出" action="#{user.verify}"/>

</h:form>

</f:view>

</body>

</html>

welcome.jsp

<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>

<%@taglib uri="http://java.sun.com/jsf/core" prefix="f" %>

<%@taglib uri="http://java.sun.com/jsf/html" prefix="h" %>

<spa>

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JSF分页 | JSF自定义配置文件

2008-02-01 10:37
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