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" onblur="validatorloginName()">
<SPAN id="errormessage"></SPAN>
<INPUT id=confirm type="button" value=注册帐号 onclick="mysubmit()"/>
<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 stub
System.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
*/
public Object getService(String serviceKey) {
return this.getWebApplicationContext().getBean(serviceKey);
}
protected static Logger getLog() {
return Logger.getInstance();
}