1 <script>
2 $(function(){
3 $("#myform").validate(
4 {
5
6 rules: {
7 name:{required:true,rangelength:[6,20],
8 remote:{ //验证用户名是否存在
9 type:"POST",
10 url:"loginVerifyAction", //servlet
11 data:{
12 name:function(){return $("#name").val();}
13 }
14 }
15 },
16 password: {required:true,minlength:6},
17 repassword: {required:true,equalTo:"#password"},
18 veryCode: {required:true,
19 remote:{
20 type:"POST",
21 url:"valCodeAction",
22 data:{
23 veryCode:function(){return $("#veryCode").val();}
24 }
25 }
26 }
27 },
28 messages: {
29 name:{required:"用户名不能为空！",rangelength:jQuery.format("用户名位数必须在{0}到{1}字符之间！"),remote:jQuery.format("用户名已经被注册")},
30 password: {required:"密码不能为空！",minlength:jQuery.format("密码位数必须大于等于6个字符！")},
31 repassword: {required:"确认密码不能为空！",equalTo:"确认密码和密码不一致！"},
32 veryCode: {required:"请输入验证码",remote:jQuery.format("验证码错误")}
33 }
34 });
35 });
36
37 </script>
38
39
40
41 servlet代码：
42
43 //验证用户名是否存在
44
45 public class LoginVerifyAction extends HttpServlet {
46 public void service(HttpServletRequest request, HttpServletResponse response)
47 throws IOException, ServletException {
48
49 response.reset();
50 response.setContentType("text/html;charset=UTF-8");
51 //业务逻辑操作countByParams得到值并存储到num中
52 if(num!=0){
53 response.getWriter().print(false);
54 }
55 else{
56 response.getWriter().print(true);
57 }
58 }
59 }
60
61 //验证验证码
62
63 public class ValCodeAction extends HttpServlet {
64
65 public void service(HttpServletRequest request, HttpServletResponse response)
66 throws IOException, ServletException {
67 //得到验证码的操作请看另一篇文章 ：验证码
68 response.setContentType("text/html;charset=UTF-8");
69 String validateC = request.getSession().getAttribute("validateCode").toString().trim();
70 String veryCode = request.getParameter("veryCode").trim();
71 if(veryCode.equals(validateC)){
72 response.getWriter().print(true);
73 }else{
74 response.getWriter().print(false);
75 }
76 }
77
78 xml中的配置 ： 忽略。。。
