登陆、注销

最新推荐文章于 2023-05-30 19:29:17 发布

原创最新推荐文章于 2023-05-30 19:29:17 发布 · 1.4k 阅读

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#login #logout

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本文详细阐述了基于Struts框架的用户登录界面设计及后台验证逻辑，包括表单提交处理、用户信息验证、错误反馈及成功登录后的跳转流程。

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loginUI.jsp

<!-- 显示表单 -->
<s:form action="user_login" focusElement="loginNameInput">
    <div id="CenterAreaBg"> 
        <div id="CenterArea">
            <div id="LogoImg"><img border="0" src="${pageContext.request.contextPath}/style/blue/images/logo.png" /></div>
            <div id="LoginInfo">
                <table BORDER=0 CELLSPACING=0 CELLPADDING=0 width=100%>
                	<tr>
                		<td colspan="3"><!-- 显示错误 -->
							<font color="red"><s:fielderror/></font>
                		</td>
                	</tr>
                    <tr>
                        <td width=45 class="Subject"><img border="0" src="${pageContext.request.contextPath}/style/blue/images/login/userId.gif" /></td>
                        <td>
                        	<s:textfield name="loginName" size="20" tabindex="1" cssClass="TextField required" id="loginNameInput" />
                        </td>
                        <td rowspan="2" style="padding-left:10px;">
                        	<input type="image" tabindex="3" src="${pageContext.request.contextPath}/style/blue/images/login/userLogin_button.gif" />
                        </td>
                    </tr>
                    <tr>
                        <td class="Subject"><img border="0" src="${pageContext.request.contextPath}/style/blue/images/login/password.gif" /></td>
                        <td><s:password name="password" id="aa" size="20" tabindex="2" showPassword="false" cssClass="TextField required" /></td>
                    </tr>
                </table>
            </div>
            <div id="CopyRight"><a href="javascript:void(0)">© 2010 版权所有 </a></div>
        </div>
    </div>
    </s:form>

UserAction.java

    /**登陆*/
    public String login() throws Exception{
    	User user = userService.findByLoginNameAndPassword(model.getLoginName(),model.getPassword());
    	if(user == null){
    		addFieldError("login", "用户名或密码不正确");
    		return "loginUI" ;
    	}else{
    		//登陆用户
    		ActionContext.getContext().getSession().put("user", user);
    		return "toIndex" ;
    	}
    }
    
    /**注销*/
    public String logOut() throws Exception{  
    	ActionContext.getContext().getSession().remove("user");
    	return "logOut" ;
    }

UserServiceImpl.java

public User findByLoginNameAndPassword(String loginName, String password) {
		//使用密码的MD5摘要进行对比
		String md5Digest = DigestUtils.md5Hex(password);
		return (User) getSession().createQuery(//
				"FROM User u WHERE u.loginName=? AND u.password=?")//
				.setParameter(0, loginName)//
				.setParameter(1, md5Digest)//
				.uniqueResult();
	}

struts.xml


<!-- 用户管理 -->
        <action name="user_*" class="userAction" method="{1}">
        	<result name="list">/WEB-INF/jsp/userAction/list.jsp</result>
        	<result name="toList" type="redirectAction">user_list</result>
        	<result name="saveUI">/WEB-INF/jsp/userAction/saveUI.jsp</result>
        	
        	<result name="loginUI">/WEB-INF/jsp/userAction/loginUI.jsp</result>
        	<result name="logOut">/WEB-INF/jsp/userAction/logout.jsp</result>
        	<result name="toIndex" type="redirect">/index.jsp</result>
        </action>