MVC循序渐进(webwork实现的登录)(四)

类别:Java 点击:0 评论:0 推荐:
MVC循序渐进(环境篇) eclipse+tomcat(一)
MVC循序渐进(jsp model1实现的登录)(二)
MVC循序渐进(jsp model2实现的登录)(三)

为了以后比较分析,我把所有的实现代码放到一个web应用程序中,所以看这篇文章前请看以上系列文章。

一、安装webwork

http://opensymphony.com/webwork/   下载最新版本的webwork 解压

我们用到的jar包有

lib/core 下所有jar包 和 webwork-2.1.7.jar 

拷贝到WEB-INF/lib 文件夹下。

二、配置
webapp\WEB-INF\web.xml
webapp\WEB-INF\classes\ xwork.xml(webapp\WEB-INF\src\ xwork.xml 建立 eclipse编译自动放到classes目录下)

webapp\WEB-INF\web.xml
****************************************************************
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
    "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
 <display-name>Examples</display-name>
 <description>Examples. </description>
 <servlet>
  <servlet-name>webwork</servlet-name>
  <servlet-class>com.opensymphony.webwork.dispatcher.ServletDispatcher</servlet-class>
  <load-on-startup>1</load-on-startup>
 </servlet>
 <servlet>
  <servlet-name>LoginServlet</servlet-name>
  <servlet-class>model2.LoginServlet</servlet-class>
 </servlet>
 <servlet-mapping>
  <servlet-name>webwork</servlet-name>
  <url-pattern>*.webwork</url-pattern>
 </servlet-mapping>
 <servlet-mapping>
  <servlet-name>LoginServlet</servlet-name>
  <url-pattern>/model2/LoginServlet</url-pattern>
 </servlet-mapping>
 <taglib>
  <taglib-uri>webwork</taglib-uri>
  <taglib-location>/WEB-INF/lib/webwork-2.1.7.jar</taglib-location>
 </taglib>
</web-app>
************************************************************************

webapp\WEB-INF\classes\ xwork.xml(webapp\WEB-INF\src\ xwork.xml 建立 eclipse编译自动放到classes目录下)
**********************************************************************
<!DOCTYPE xwork PUBLIC "-//OpenSymphony Group//XWork 1.0//EN"
"http://www.opensymphony.com/xwork/xwork-1.0.dtd">

<xwork>
 <include file="webwork-default.xml" />
 <package name="default" extends="webwork-default">
  <default-interceptor-ref name="defaultStack" />
  <action name="login" class="webwork.LoginAction">
   <result name="error" type="dispatcher">login.jsp</result>
   <result name="success" type="dispatcher">succeed.jsp</result>
  </action>
 </package>
</xwork>
*************************************************************************
         其他webwork.properties,validators.xml等配置在以后介绍

三、所有程序
webapp\webwork\ login.jsp
webapp\webwork\ succeed.jsp
webapp\WEB-INF\src\webwork\ LoginAction.java

webapp\webwork\ login.jsp
*************************************************************************
<%@ taglib uri="webwork" prefix="ww" %>
<%@ page language="java" pageEncoding="GB2312" %>
<!DOCTYPE HTML PUBLIC "-//w3c//dtd html 4.0 transitional//en">
<html>
<head>
<title>Lomboz JSP</title>
</head>
<body bgcolor="#FFFFFF">
<form action="login.webwork" method="post">
<div>
<span style="width:70;">用户名:</span>
<span><input type="text" name="username"></span>
</div>
<div>
<span style="width:70;">密 码:</span>
<span><input type="password" name="password"></span>
</div>
<div>
<span style="width:70;"></span>
<span><input type="submit"></span>
</div>
<div style="color:red;">
<ww:property value="msg" />
</div>
</form>
</body>
</html>
*************************************************************************

webapp\webwork\ succeed.jsp
*************************************************************************
<%@ page language="java" pageEncoding="GB2312" %>
<%@ taglib uri="webwork" prefix="ww" %>
<%@ page import="com.opensymphony.xwork.util.OgnlValueStack" %>
<!DOCTYPE HTML PUBLIC "-//w3c//dtd html 4.0 transitional//en">
<html>
<head>
<title>Lomboz JSP</title>
</head>
<body bgcolor="#FFFFFF">

<ww:property value="#session['username']"/>
<ww:property value="msg" />
<br>
////////////////////////////////////////
<br>
<%
Object username=session.getAttribute("username");
if(username!=null)
  out.println(username);
else
  response.sendRedirect("login.jsp");

OgnlValueStack stack = (OgnlValueStack)request.getAttribute("webwork.valueStack");
out.println(stack.findValue("msg"));
%>

</body>
</html>
*************************************************************************

       webapp\WEB-INF\src\webwork\ LoginAction.java
*************************************************************************
package webwork;
import com.opensymphony.xwork.Action;
import com.opensymphony.xwork.ActionContext;
import com.opensymphony.xwork.ActionSupport;
public class LoginAction extends ActionSupport {
 private String username;
 private String password;
 public void setUsername(String username) {
  this.username = username;
 }
 public void setPassword(String password) {
  this.password = password;
 }
 private String msg;

 public String getMsg() {
  return this.msg;
 }
 public String execute() throws Exception {
  boolean isSucceed = false;
  if (username != null) {
   System.out.println("登陆处理开始.........");
   username = username.trim();
   password = password.trim();
   if (username.equals("") && username.equals("")) {
    isSucceed = false;
    msg = "用户名或密码为空";
   } else {
    isSucceed = true;
   }
   if (isSucceed) {
    if (username.equals("zkjbeyond")
      && password.equals("zkjbeyond")) {
     isSucceed = true;
     //放到session中
     ActionContext.getContext().getSession().put("username", username);
     msg = "登陆成功";
    } else {
     isSucceed = false;
     msg = "用户名密码不正确";
    }
   }
  } else {
   isSucceed = false;
   msg = "请输入用户名密码";
  }
  System.out.println(msg + isSucceed);
  System.out.println("登陆处理结束.........");
  if (isSucceed)
   return Action.SUCCESS;
  else
   return Action.ERROR;
 }
}
*************************************************************************

参考:http://www.opensymphony.com/webwork/wikidocs/Documentation.html

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