WebWork2 Property-Driven & Model-Driven 驱动方式 _Web前端

WebWork2 Property-Driven & Model-Driven 驱动模式
昨天花了一晚上通读了《webwork in action》第三第四章节，高级输入部分的源码硬是通不过，今天趁着晚上值班空闲的时间，终于验证通过了。下面总结一下：

首先是 Property-Driven （属性依附于Action对象）

web.xml 代码

>
<web-app>
<filter>
<filter-name>webworkfilter-name>
<filter-class>
com.opensymphony.webwork.dispatcher.FilterDispatcher
filter-class>
filter>
<filter-mapping>
<filter-name>webworkfilter-name>
<url-pattern>/*url-pattern>
filter-mapping>
<taglib>
<taglib-uri>webworktaglib-uri>
<taglib-location>
/WEB-INF/lib/webwork-2.2.4.jar
taglib-location>
taglib>
web-app>

xwork.xml 代码

>
<xwork>
<include file="webwork-default.xml" />
<package name="default" extends="webwork-default">
<action name="userLogin" class="org.vv.action.UserLogin">
<result name="success">welcome.jspresult>
<result name="input">index.jspresult>
action>
package>
xwork>

User 代码

package org.vv.vo;
public class User {
private String userName;
private String userPwd;
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getUserPwd() {
return userPwd;
}
public void setUserPwd(String userPwd) {
this.userPwd = userPwd;
}
}

UserDAO.java 代码

package org.vv.dao;
import org.vv.vo.User;
public class UserDAO {
public User findByUser(String userName,String userPwd)
{
User user = null;
if(userName.equals("aaa") && userPwd.equals("bbb")){
user = new User();
user.setUserName(userName);
user.setUserPwd(userPwd);
}
return user;
}
}

UserLogin.java 代码

package org.vv.action;
import java.util.Map;
import org.vv.dao.UserDAO;
import org.vv.vo.User;
import com.opensymphony.xwork.ActionContext;
import com.opensymphony.xwork.ActionSupport;
public class UserLogin extends ActionSupport {
private static final long serialVersionUID = 1L;
User user;
UserDAO userDAO = new UserDAO();
Map
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public UserDAO getUserDAO() {
return userDAO;
}
public void setUserDAO(UserDAO userDAO) {
this.userDAO = userDAO;
}
public String execute() throws Exception {
String userName = user.getUserName();
String userPwd = user.getUserPwd();
if (userDAO.findByUser(userName, userPwd) != null) {
ActionContext ctx = ActionContext.getContext();
session = ctx.getSession();
session.put("userName", userName);
return SUCCESS;
} else {
return INPUT;
}
}
}

index.jsp 代码

<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
<%@ taglib prefix="ww" uri="webwork" %>
<html>
<head>
<title>title>
head>
<body>
登录
p>
<form action="userLogin.action" method="post">
userName:
<ww:textfield name="user.userName"/>
userPwd:
<ww:textfield name="user.userPwd"/>
<ww:submit name="submit" value="submit"/>
form>
body>
html>

welcome.jsp 代码

<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
<%@ taglib prefix="ww" uri="webwork" %>
<html>
<head>
<title>title>
head>
<body>
success!!!
userName:<ww:property value="user.userName"/>
Password:<ww:property value="user.userPwd"/>
session:<ww:property value="#session['userName']"/>
body>
html>

下面是Model-Driven 只要修改两个文件即可

UserLogin.java 代码（实现ModelDriven接口和getModel( )方法）

package org.vv.action;
import java.util.Map;
import org.vv.dao.UserDAO;
import org.vv.vo.User;
import com.opensymphony.xwork.ActionContext;
import com.opensymphony.xwork.ActionSupport;
import com.opensymphony.xwork.ModelDriven;
public class UserLogin extends ActionSupport implements ModelDriven{
private static final long serialVersionUID = 1L;
User user;
UserDAO userDAO = new UserDAO();
Map
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public UserDAO getUserDAO() {
return userDAO;
}
public void setUserDAO(UserDAO userDAO) {
this.userDAO = userDAO;
}
public String execute() throws Exception {
String userName = user.getUserName();
String userPwd = user.getUserPwd();
if (userDAO.findByUser(userName, userPwd) != null) {
ActionContext ctx = ActionContext.getContext();
session = ctx.getSession();
session.put("userName", userName);
return SUCCESS;
} else {
return INPUT;
}
}
public Object getModel() {
return user;
}
}

修改xwork.xml

xwork.xml 代码（增加拦截器 interceptor）

>
<xwork>
<include file="webwork-default.xml" />
<package name="default" extends="webwork-default">
<interceptors>
<interceptor-stack name="modelParamsStack">
<interceptor-ref name="params" />
<interceptor-ref name="model-driven" />
interceptor-stack>
interceptors>
<action name="userLogin" class="org.vv.action.UserLogin">
<result name="success">welcome.jspresult>
<result name="input">index.jspresult>
<interceptor-ref name="modelParamsStack" />
action>
package>
xwork>

ok!