使用jquery验证用户名称是否重复(jquery+sturts)
jsp页面为:<html><head><script src="js/jquery-1.2.js" type="text/javascript"></script> var flag="true"; //判断用户名称是否重复 function validatorloginName(){ var loginName=document.getElementById("loginName").value;$j.ajax({ type: "POST", url: "${pageContext.request.contextPath}/validatorLoginName.do", data: "loginName="+loginName, async: false , success: function(data){ if(data=="true"){ errormessage.innerHTML="用户名可用" flag=true; }else{ errormessage.innerHTML="用户名已存在"; flag=false; } } });}function mysubmit(){ if(flag=="true"){ alert("用户名已经存在或输入格式不正确");}else{ document.getElementById("myform").submit(); }}</head><body> <FORM id="myform" action="registerManager.do" method="post"> <INPUT class=text id="loginName" title=通行证用户名 size=18 name="loginName" > <SPAN id="errormessage"></SPAN> <INPUT id=confirm type="button" value=注册帐号 /> <FORM></body></html>
struts的action为：
public class ValidatorLoginNameAction extends org.springframework.web.struts.ActionSupport { /** Generated Methods*/ /** * Method execute* @param mapping* @param form* @param request* @param response* @return ActionForward*/ public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception{// TODO Auto-generated method stubSystem.out.println("-------");IRegisterManagerService registerManager = (IRegisterManagerService) this.getService("registerManagerServiceImpl"); String loginName=request.getParameter("loginName"); boolean bool=registerManager.validatorName(loginName);//通过Service验证该用户是否存在 if(bool==true){ response.getWriter().write("true");//此值jquery可以接收到}else{ response.getWriter().write("false");}return null; } /*** <p>* 获取业务服务对象；* </p>* * @param serviceKey* 服务对象ID；* @return*/ publicObject getService(String serviceKey) {return this.getWebApplicationContext().getBean(serviceKey); }protected static Logger getLog() {return Logger.getInstance(); }}
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