ajax 验证用户与密码
登陆页面：<s:form method="post" action="../user/login.action" id="ctl00" theme="simple" namespace="/authorize"> <s:token></s:token> <tr> <td> <span>请输入Email地址：</span> <div> <s:textfield name="email" id="txtUsername" cssClass="textbox" ></s:textfield><br/> <span id="emailInfo" style="color:red"></span> </div> </td> <td> <span class="blank">密码：</span> <div> <s:password name="password" id="txtPassowrd" cssClass="textbox" ></s:password><br/> <span id="pwdInfo" style="color:red"></span> </div> </td> <td> <s:submit id="btnSignCheck" cssClass="button_enter"value="登 录"></s:submit> </td> </tr> <!-- <input type="hidden" name="uri" value="${uri}" /> --> </s:form>
var flag = {"login":false};$(function(){ var name=""; var pwd=""; $("#txtUsername").blur(function(){ flag.login=false; name = $("#txtUsername").val(); if(name==""){ $("#emailInfo").html("请输入邮箱地址!"); }else{ $("#txtPassowrd").blur(function(){ pwd=$("#txtPassowrd").val(); if(pwd==""){ $("#pwdInfo").html("请输入密码!"); }else{ $.post( "../user/testLogin.action?dt="+new Date().getTime(), {"loginName":name,"loginPwd":pwd}, function(data){ if(data.ok){ flag.login=true; }else{ alert(data); $("#pwdInfo").html("用户名或密码错误，请重新填写!"); } }, "json" ); } }); } }); //是否允许表单提交 $("#ctl00").submit(function(){ return flag.login; });}); 上面代码中ajax是使用jquery提供的$.post来发送的
$.post( "../user/testLogin.action?dt="+new Date().getTime(), {"loginName":name,"loginPwd":pwd}, function(data){ if(data.ok){ flag.login=true; }else{ alert(data); $("#pwdInfo").html("用户名或密码错误，请重新填写!"); } }, "json" ); 后台判断逻辑
public class testLoginAction { private boolean ok; public boolean isOk() { return ok; } public void setOk(boolean ok) { this.ok = ok; } public String execute(){ UserDAO userDao = DAOFactory.getUserDAO(); HttpServletRequest request=ServletActionContext.getRequest(); Map<String, Object> session = ActionContext.getContext().getSession(); String loginName=request.getParameter("loginName"); String pwd=request.getParameter("loginPwd"); String str=""; try { str = userDao.findByLogName(loginName); int index=str.lastIndexOf("/"); String password=str.substring(0,index); String pass = DegistUtil.md5(pwd); int index1=str.lastIndexOf("/")+1; String bb=str.substring(index1); String s=""; if(password.equals(pass)){ session.put("bb",bb); ok=true; }else{ ok=false; } } catch (DangException e) { e.printStackTrace(); } return "success"; }} struts2的配置文件如下：
<action name="testLogin" class="org.tarena.action.user.testLoginAction"> <result name="error">loginForm.jsp</result> <result name="success" type="json"></result></action>
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