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标题: struts傻瓜式学习（一天篇） [打印本页]
作者: cuichangdashi    时间: 2006-02-10 15:13
标题: struts傻瓜式学习（一天篇）

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Struts/Hibernate

struts傻瓜式学习（一天篇）
作者:未知 时间:2005-07-24 21:22 出处:JR 责编:chinaitpower
              摘要：struts傻瓜式学习（一天篇）
作者：林佩雯
    或许有人觉得struts不容易学，似乎里面的一些概念让未接触过的人迷惑，M
VC
1、M
VC
2、模式……我写这篇文章是想让从来没有接触过struts的人，能有个简单的入门指引，当然，
系统
地学习struts是必要的，里面有很多让人心醉的东东，那是后话了。
    该案例包括首页，用户登陆、网站向导页面。就这么简单，没有深奥的struts概念，主要靠动手，然后用心体会~!@#$%^&
    WEB Server用tomcat4。到
http://jakarta.apache.org
下载struts1.1，把zip
文件
释放到c:\struts，拷贝C:\struts\webapps\struts-example.war到c:\tomcat4\webapps中，启动tomcat，war包被释放为struts-example
文件
夹，删除war包，把struts-example
文件
夹更名为test。
一、把WEB-INF\web.xml改成：
    
  
    action
    org.apache.struts.action.ActionServlet
   
      config
      /WEB-INF/struts-config.xml
   
    1
  
  
  
    action
    *.cool
  
   
  
    index.jsp
  
二、把test\WEB-INF\ struts-config.xml改成：
  
  
  
   
  
  
  
  
   
   
  
  
  
  
   
   
   
  
三、增加一个FormBean，类路径为test.UserForm，以下是这个类的内容：
  • package test;

  • import org.apache.struts.action.ActionForm;

  • public class UserForm extends ActionForm
  • {
  •   private
    [url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>java/lang/String.
    [url=]java[/url]
    .html]String[/url]
     name="lpw";//用户名
  •   private
    [url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>java/lang/String.
    [url=]java[/url]
    .html]String[/url]
     ps="1111";//密码
  •   public UserForm(){}
  •   public void setName(
    [url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>java/lang/String.
    [url=]java[/url]
    .html]String[/url]
     s) {name=s;}
  •   public
    [url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>java/lang/String.
    [url=]java[/url]
    .html]String[/url]
     getName() {return name;}
  •   public void setPs(
    [url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>java/lang/String.
    [url=]java[/url]
    .html]String[/url]
     s) {ps=s;}
  •   public
    [url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>java/lang/String.
    [url=]java[/url]
    .html]String[/url]
     getPs() {return ps;}
  • }
    四、增加一个Action的子类，类路径为test. RegistAction，以下是这个类的内容：
  • package test;
  • import
    java
    .lang.reflect.
    [url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>java/lang/reflect/InvocationTargetException.
    [url=]java[/url]
    .html]InvocationTargetException[/url]
    ;
  • import
    java
    .util.
    [url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>java/util/Locale.
    [url=]java[/url]
    .html]Locale[/url]
    ;
  • import
    java
    x.servlet.
    [url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>javax/servlet/ServletException.
    [url=]java[/url]
    .html]ServletException[/url]
    ;
  • import
    java
    x.servlet.http.
    [url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>javax/servlet/http/HttpServletRequest.
    [url=]java[/url]
    .html]HttpServletRequest[/url]
    ;
  • import
    java
    x.servlet.http.
    [url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>javax/servlet/http/HttpSession.
    [url=]java[/url]
    .html]HttpSession[/url]
    ;
  • import
    java
    x.servlet.http.
    [url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>javax/servlet/http/HttpServletResponse.
    [url=]java[/url]
    .html]HttpServletResponse[/url]
    ;
  • import org.apache.struts.action.Action;
  • import org.apache.struts.action.ActionError;
  • import org.apache.struts.action.ActionErrors;
  • import org.apache.struts.action.ActionForm;
  • import org.apache.struts.action.ActionForward;
  • import org.apache.struts.action.ActionMapping;
  • import org.apache.struts.util.MessageResources;
  • import test.UserForm;

  • public final class RegistAction extends Action
  • {
  •   public ActionForward execute(ActionMapping mapping,ActionForm form,
  •    
    [url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>javax/servlet/http/HttpServletRequest.
    [url=]java[/url]
    .html]HttpServletRequest[/url]
    request,                  
  •    
    [url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>javax/servlet/http/HttpServletResponse.
    [url=]java[/url]
    .html]HttpServletResponse[/url]
    response) throws
    [url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>java/lang/Exception.
    [url=]java[/url]
    .html]Exception[/url]
  •   {
  •    
    [url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>java/util/Locale.
    [url=]java[/url]
    .html]Locale[/url]
     locale = getLocale(request);
  •     MessageResources messages = getResources(request);
  •    
    [url= target=_blank http: www.chinaitpower.com Dev Programme Java index.html?>javax/servlet/http/HttpSession.
    [url=]java[/url]
    .html]HttpSession[/url]
    session = request.getSession();
  •     UserForm userform = (UserForm) form;
  •          //此处可以调用其他类来执行
    数据库
    写入或其他逻辑判断
  •          // 如果UserForm传来的参数name的值为默认的lpw，将forward到failed，
  •          // 该名称将到struts-config.xml的中寻找映射的url地址
  •          // （可以是绝对路径，也可以是相对路径），对于本例，是转到failed.cool，
  •          // 还记得吗？后缀为cool的请求全部到action-mappings中寻找
  •          // 对应的action处理，最终目录是wuwu.jsp*/
  •     if( "lpw".equals(userform.getName()) ) return (mapping.findForward("failed"));
  •     else return (mapping.findForward("regist"));
  •   }
  • }
    五、以下所有新增或修改的页面相当于struts的View部分，把首页index.jsp改成：
    站点导航

    用户:
    密码:
    六、增加hello.jsp，用于站点导航：
    site mapThe following is content filling by reader
    七、增加wuwu.jsp，当没有新用户登陆时，将转到这个页面：
    现有用户：
    密码：
    没有得到新的用户！55555～～～～～
    八、增加regist.jsp，当有新用户登陆时，将转到这个页面：
    新用户帐号：
    密码：
    九、启动tomcat4，浏览器中键入http://localhost:8080/test/index.jsp，操作一下，就可以看到结果，并初步理解struts的M、V、C各部分的协同工作原理，当然这是作者的良好意愿，如果读者看得一头雾水，欢迎指出错误在哪里  ：）
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