zoukankan      html  css  js  c++  java
  • 6.struts登陆页面的演示

      1.创建一个web project "Struts_1"    
        添加struts的jar包 --在项目文件右键->myeclipse->add struts...
            上面的步骤已经将web.xml中加入了struts的映射
      2.在src文文件下建2个包com.amaker.action,->LoginAction.java;com.amaker.form->LoginForm.java
        
    //LoginAction.java
    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.amaker.form.LoginForm;
    public class LoginAction extends Action{
     public ActionForward execute(ActionMapping mapping, ActionForm form,
       HttpServletRequest request, HttpServletResponse response)
       throws Exception {
      System.out.println("mapping.....");
    //	 String username=request.getParameter("username");
    //	 String password=request.getParameter("password");
      //上面2行需要表单的处理
      LoginForm login=(LoginForm)form;
      String username=login.getUsername();
      String password=login.getPassword();
     
      if(username!=null&&username.equals("lily"))
      {
    //	 request.getRequestDispatcher("/Success.html").forward(request, response);
       return mapping.findForward("success");
      }else{
    //	 request.getRequestDispatcher("/Failure.html").forward(request, response);
       return mapping.findForward("failure");
      }
      //上面的return需要调转页面的处理
    //	 return null;
     }
    }

      

    //LoginForm.java
    package com.amaker.form;
    import org.apache.struts.action.ActionForm;
    public class LoginForm extends ActionForm {
     private String username;
     private String password;
     public String getUsername() {
      return username;
     }
     public void setUsername(String username) {
      this.username = username;
     }
     public String getPassword() {
      return password;
     }
     public void setPassword(String password) {
      this.password = password;
     }
    }
    

      3.配置struts-config.xml

    <?xml version="1.0" encoding="UTF-8"?> 
    <!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd"> 
    
    <struts-config> 
    <data-sources /> 
    
    <form-beans> 
    <form-bean name="loginForm" type="com.amaker.form.LoginForm"></form-bean> 
    </form-beans> 
    //<form-beans>在.xml位置不能变不然会报错 //表格名字要与<action path="/login" //type="com.amaker.action.LoginAction" name="loginForm"> 相同 <global-exceptions /> <global-forwards /> <action-mappings> <action path="/login" type="com.amaker.action.LoginAction" name="loginForm"> <forward name="success" path="/Success.html"></forward> <forward name="failure" path="/Failure.html"></forward> </action> </action-mappings> <message-resources parameter="com.yourcompany.struts.ApplicationResources" /> </struts-config>

      4.index.jsp

    <%@ 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 'index.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">
     <!--
     <link rel="stylesheet" type="text/css" href="styles.css">
     -->
      </head>
     
      <body>
        <form name="f1" id="f1" action="<%=path%>/login.do" method="post">
          <table border="0">
            <tr>
              <td>Username:</td>
              <td><input type="text" name="username" ></td>
            </tr>
            <tr>
              <td>Password:</td>
              <td><input type="password" name="password" id="password"></td>
            </tr>
            <tr>
              <td colspan="2" align="center"><input type="submit" value="Login"></td>
            </tr>
          </table>
        </form>
      </body>
    </html>
    

      5.Failure.html  

    <!DOCTYPE html>
    <html>
      <head>
        <title>MyHtml.html</title>
     
        <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
        <meta http-equiv="description" content="this is my page">
        <meta http-equiv="content-type" content="text/html; charset=UTF-8">
       
        <!--<link rel="stylesheet" type="text/css" href="./styles.css">-->
    
      </head>
     
      <body>
    
      faliure!.....
      </body>
    </html>
    

      6.Success.html

    <!DOCTYPE html>
    <html>
      <head>
        <title>MyHtml.html</title>
     
        <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
        <meta http-equiv="description" content="this is my page">
        <meta http-equiv="content-type" content="text/html; charset=UTF-8">
       
        <!--<link rel="stylesheet" type="text/css" href="./styles.css">-->
    
      </head>
     
      <body>
      Success!........
      </body>
    </html>
    

      


    总结:
    表单与Java类通过xml文件配置联系在一起,使使用时的类的名字更好记,而且易于改动
    ------------------------------------------------------------------------------------------------------------------------------本娃的学习日记@lily园
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  • 原文地址:https://www.cnblogs.com/yanglicyfsdm/p/j2ee.html
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