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

 

 

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

 

 

8 上面的开发过程，可以提高我们的开发效率

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