First, the file import js:
jQuery-1.12.4.js
and test code:
<body>
<script type="text/javascript" src="js/jquery-1.12.4.js"></script>
<script>
$(function(){
$("#user").blur(function(){
var name=$("#user").val();
//拿到文章的值并且提交
$.ajax({
url:"IndexServlet", //提交的url
data:"name="+name, //提交的参数
datatype:"text", //返回类型
type:"GET", //提交方式
success:function(){ //提交成功执行的操作
alert(1);
},
error:function(){ //提交失败执行的操作
alert(2);
}
});
});
});
</script>
<form action="IndexServlet" method="post" enctype="">
用户名：<input type="text" name="user" οnblur="check()" id="user"/>
<input type="submit" value="提交"/>
</form>
</body>
IndexServlet code:
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setCharacterEncoding("utf-8");
System.out.println("进入IndexServlet");
/*String name=new String(request.getParameter("name").getBytes("iso-8859-1"),"utf-8");*/
String name=request.getParameter("name");
System.out.println(name);
//把数据发送到jsp里面
PrintWriter out= response.getWriter();
out.print(name);
Welcome to share your thoughts!
