登录的实现（第四天）
2017-07-06 本文已影响0人
setone
第四天；
总结：
1.了解领域对象的使用
2.储存Session
3.对@ @Autowired的使用
我们现在写登录页
相比于咋天，我们多了两个文件，已经用红框标出来了
onepage.jsp是登录成功的显示页
error.jsp是登录失败的显示页
上面两个页面内容简单，无须变动
这次index.jsp变动蛮大，贴代码
<%@ page language="java" import="java.util.*" 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 '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">
<style type="text/css">
#login {
width: 400px;
height: 250px;
background-color: #f2f2f2;
border:1px solid #DDDDDD;
padding: 5px;
}
#login fieldset {
border: none;
margin-top: 10px;
}
#login fieldset legend {
font-weight: bold;
}
#login fieldset p {
display: block;
height: 30px;
}
#login fieldset p label {
display: block;
float:left;
text-align: right;
font-size: 12px;
width: 90px;
height: 30px;
line-height: 30px;
}
#login fieldset p input {
display: block;
float:left;
border: 1px solid #999;
width: 250px;
height: 30px;
line-height: 30px;
}
#login fieldset p input.code {
width: 60px;
}
#login fieldset p img {
margin-left: 10px;
}
#login fieldset p a {
color: #057BD2;
font-size: 12px;
text-decoration: none;
margin: 10px;
}
#login fieldset p input.btn {
background: url("css/images/login.gif") no-repeat;
width: 98px;
height: 32px;
margin-left: 60px;
color: #ffffff;
}
#login fieldset p input.input_focus {
background-color: #BEE7FC;
}
</style>
</head>
<body>
<form action="answer/login.action">
<div align="center">
<div id="login" >
<fieldset>
<legend>用户登录</legend>
<p>
<label>用户名：</label>
<input name="userinfo.uame" type="text" value="zsf"/>
</p>
<p>
<label>密码：</label>
<input name="userinfo.upsw" type="password" value="zsf"/>
</p>
<p>
<label>验证码：</label>
<input name="code" type="text" class="code" />
<a href="#">换一张</a> </p>
<p>
<input name="" type="submit" class="btn" value="登录" />
<a href="answer/preRegister.action">注册</a><span>|</span><a href="#">忘记密码？</a>
</p>
</fieldset>
</div>
</div>
</form>
</body>
</html>
struts.xml
<package name="default" namespace="/answer" extends="struts-default">
<action name="login" class="userinfoAction" method="login">
<result name="success">/homepage/onepage.jsp</result>
<result name="error">/error.jsp</result>
</action>
</package>
在就是我们要在appliactionContext.xml里面添加一段代码
<!-- 该 BeanPostProcessor 将自动起作用，对标注 @Autowired 的 Bean 进行自动注入 -->
<bean class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor" />
以上是配置文件的变动部分
下面是java文件的变动地方
UserinfoAction.java
package com.jianshu.action;
import java.util.List;
import org.apache.struts2.ServletActionContext;
import org.springframework.beans.factory.annotation.Autowired;
import com.jianshu.bean.Userinfo;
import com.jianshu.service.UserinfoService;
public class UserinfoAction {
@Autowired
UserinfoService userinfoService;
Userinfo userinfo;
public Userinfo getUserinfo() {
return userinfo;
}
public void setUserinfo(Userinfo userinfo) {
this.userinfo = userinfo;
}
/**
* 登录检测
*
* @return
*/
public String login() {
List list = userinfoService.checkLongin(userinfo);
if (list.size() > 0) {
// 将登录人信息放入session
Userinfo userinfo = (Userinfo) list.get(0);// 登录人的信息
ServletActionContext.getRequest().getSession()
.setAttribute("userinfo", userinfo);// 把userinfo存入Session
return "success";
} else {
return "error";
}
}
}
UserinfoService
package com.jianshu.service;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import com.jianshu.bean.Userinfo;
import com.jianshu.dao.UserinfoDAO;
public class UserinfoService {
@Autowired
UserinfoDAO userinfoDAO;
/**
* 检查是否有对应用户
* @param userinfo
* @return
*/
public List checkLongin(Userinfo userinfo) {
return userinfoDAO.findByExample(userinfo);
}
}
