使用工具半自动化开发struts

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一 使用工具开发struts有两种方式
1 用工具引入struts包和配置文件,然后自己配置struts-config.xml,完成开发。或称半自动化。
2 完全依赖myeclipse提供的工具完成struts开发。或称全自动化。
 
二 实例——半自动化实现登录验证系统
1 使用工具建立web工程
 
2 导入struts开发包

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使用工具半自动化开发struts_第2张图片
 
自动引入struts开发包,自动生成struts-config.xml以及web.xml,并完成一些配置。
 
3 开发login.jsp页面
<%@  page  language = "java"  import = "java.util.*"  pageEncoding = "ISO-8859-1" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+ "://" +request.getServerName()+ ":" +request.getServerPort()+path+ "/" ;
%>
 
DOCTYPE  HTML  PUBLIC  "-//W3C//DTD HTML 4.01 Transitional//EN">
< html >
   < head >
     < base  href = " <%= basePath %> " >
   
     < title > My JSP 'login.jsp' starting page title >
   
         < meta  http-equiv = "pragma"  content = "no-cache" >
         < meta  http-equiv = "cache-control"  content = "no-cache" >
         < meta  http-equiv = "expires"  content = "0" >    
         < meta  http-equiv = "keywords"  content = "keyword1,keyword2,keyword3" >
         < meta  http-equiv = "description"  content = "This is my page" >
   head >
 
   < body >
     < form  action = "/strutstool1/login.do"  method = "post" >
        u: < input  type = "text"  name = "username" >< br />
        p: < input  type = "password"  name = "password" >< br />
         < input  type = "submit"  value = "login" >
     form >
   body >
html >
 
4 开发action和actionForm
LoginAction代码
package com.cakin.actions;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import com.cakin.forms.UserForm;
public class LoginAction extends Action {
    @Override
    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        //把form转成对应的UserForm对象
        UserForm userForm=(UserForm)form;
        
        if("123".equals(userForm.getPassword())){
            //把名字存放到request对象域
            //request.setAttribute("username", userForm.getUsername());
            return mapping.findForward("ok");
        }
        else{
            return mapping.findForward("err");
        }
    }
}
UserForm代码
package  com.cakin.forms;
 
import  org.apache.struts.action.ActionForm ;
 
public  class  UserForm  extends  ActionForm  {
         private  String  username ;
         private  String  password ;
         public  String getUsername() {
                 return  username ;
        }
         public  void  setUsername(String username) {
                System. out .println( "actionservlet调用,传入用户" +username);
                 this . username  = username;
        }
         public  String getPassword() {
                 return  password ;
        }
         public  void  setPassword(String password) {
                 this . password  = password;
        }
}
 
5 手动配置struts-config.xml文件
xml  version = "1.0"  encoding = "UTF-8" ?>
DOCTYPE  struts-config  PUBLIC  "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN"  " http://struts.apache.org/dtds/struts-config_1_3.dtd" ; >
 
< struts-config >
   < form-beans >
         < form-bean  name = "userForm"    type = "com.cakin.forms.UserForm" > form-bean >
   form-beans >
 
   < global-exceptions  />
   < global-forwards  />
   < action-mappings >
         < action  path = "/login"  name = "userForm"  type = "com.cakin.actions.LoginAction" >
                 < forward  name = "ok"  path = "/WEB-INF/ok.jsp" > forward >
                 < forward  name = "err"  path = "/WEB-INF/err.jsp" > forward >
         action >
   action-mappings >
   < message-resources  parameter = "com.cakin.struts.ApplicationResources"  />
struts-config >
 
6 开发ok.jsp和err.jsp
<%@  page  language = "java"  import = "java.util.*"  import = "com.cakin.forms.*"  pageEncoding = "utf-8" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+ "://" +request.getServerName()+ ":" +request.getServerPort()+path+ "/" ;
%>
 
DOCTYPE  HTML  PUBLIC  "-//W3C//DTD HTML 4.01 Transitional//EN">
< html >
   < head >
     < base  href = " <%= basePath %> " >
   
     < title > My JSP 'wel.jsp' starting page title >
   
         < meta  http-equiv = "pragma"  content = "no-cache" >
         < meta  http-equiv = "cache-control"  content = "no-cache" >
         < meta  http-equiv = "expires"  content = "0" >    
         < meta  http-equiv = "keywords"  content = "keyword1,keyword2,keyword3" >
         < meta  http-equiv = "description"  content = "This is my page" >
   head >
 
   < body >
    welcome  <%= ((UserForm)session.getAttribute( "userForm" )).getUsername()  %>  < br >
     < a  href = "/strutslogin/" > 返回重新登录 a >
   body >
html >
 
7 测试

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8 上面的开发过程,可以提高我们的开发效率
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