jquery validate 的remote用法

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jsp：

<script type="text/javascript">   $().ready(function() {   $("#modifyForm").validate({   rules: {   password:{          required: true,          minlength: 4,            remote: {                   url: "user_checkOldPassword.action",     //后台处理程序                   type: "post",               //数据发送方式                   // dataType: "json",           //接受数据格式                      data: {                     //要传递的其他数据                    loginName:$("#loginName").val()                        }                        }         },      newPassword: {       required: true,       minlength: 4      },      confirm_password: {       required: true,       minlength: 4,       equalTo: "#newPassword"      }},        messages: {        password: {            remote:"密码错误",            minlength: "不能小于4个字符"           },        newPassword: {            minlength: "不能小于4个字符"           },        confirm_password: {            minlength: "确认密码不能小于4个字符",            equalTo: "两次输入密码不一致"           }          }   });   });   </script>  <tr><td>登录名</td>                        <td><s:textfield id="loginName" name="loginName" cssClass="InputStyle2" value="%{#session.user.loginName}" disabled="true"/> *（登录不可以修改）</td>                    </tr>                    <tr><td>旧密码</td>                        <td><input id="password" name="password" type="password" class="InputStyle" /></td>                    </tr>                    <tr><td>新密码</td>                        <td><input id="newPassword" name="newPassword" type="password" class="InputStyle" /></td>                    </tr>                    <tr><td>新密码</td>                        <td><input id="confirm_password" name="confirm_password" type="password" class="InputStyle" /></td>                    </tr>

java:

private InputStream hint;//返回提示public String checkOldPassword() throws Exception{User user=userService.findByLoginNameAndPassword(model.getLoginName(), model.getPassword());Boolean isExist = false; if(user!=null){//如果用户不为空isExist=true;this.hint= new StringBufferInputStream(isExist.toString());return "checkOldPasswordHint";}this.hint= new StringBufferInputStream(isExist.toString());return "checkOldPasswordHint";}

struts.xml

<result name="checkOldPasswordHint" type="stream"><!-- 返回boolean类型 -->                  <param name="contentType">text/html</param>                  <param name="inputName">hint</param>            </result>

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