基于DWR的文本框验证

xml 代码

<
allow
>
    
<
convert
 
converter
=
"bean"
 
match
=
"ajax.dwr.validate.ValidateForm"
/>
    
<
create
 
creator
=
"new"
 
javascript
=
"ValidateAction"
>
    
<
param
 
name
=
"class"
 
value
=
"ajax.dwr.validate.ValidateAction"
/>
    
<
include
 
method
=
"validateUsername"
/>
    
<
include
 
method
=
"validatePassword"
/>
    
create
>
allow
>

 

java 代码

package
 ajax.dwr.validate;

public
 
class
 ValidateForm {
    
private
 String usename;

    
private
 String password;

    
public
 String getPassword() {
        
return
 password;
    }

    
public
 
void
 setPassword(String password) {
        
this
.password = password;
    }

    
public
 String getUsename() {
        
return
 usename;
    }

    
public
 
void
 setUsename(String usename) {
        
this
.usename = usename;
    }
}

java 代码

package
 ajax.dwr.validate;

public
 
class
 ValidateAction {
    
private
 String validate;

    
public
 String validateUsername(String username) {
        
if
 (username.equalsIgnoreCase(
"wangtong"
)  {
            validate = 
"用户名已存在！"
;
        }
        
return
 validate;
    }

    
public
 String validatePassword(String password) {
        
if
 (password.length() < 
6
) {
            validate = 
"您的密码太弱"
;
        }
        
return
 validate;
    }

}

js 代码

    <script type="text/javascript">
 
function
 append_user_validate(validate)
 {
   
if
 (validate != 
null
){
    
var
 div = $(
"username_validate"
);
    div.innerHTML=
""
;
    
var
 li = document.createElement(
"li"
);
    li.appendChild(document.createTextNode(validate));
    div.appendChild(li);
   }
 }

  
function
 append_password_validate(validate)
 {
    
var
 div = $(
"password_validate"
);
    div.innerHTML=
""
;
    
var
 li = document.createElement(
"li"
);
    li.appendChild(document.createTextNode(validate));
    div.appendChild(li);
 }


 
function
 validateName(username)
 {ValidateAction.validateUsername(username.value,append_user_validate);}
 
function
  validatePassword(password)
 {ValidateAction.validatePassword(password.value,append_password_validate);}

</body></html></script>