jquery struts 验证唯一标识(公用方法)

<script language="javascript1.2" src="<s:url value="/js/jquery.js" includeParams="false"/>"></script> 
<script language="javascript1.2" src="<s:url value="/js/dictionary.js" includeParams="false"/>"></script>

/** 
*↓↓↓↓↓↓↓↓↓↓ 
*作者：ZhuangZi 
*类名：公用方法初始化 
*功能：公用方法初始化 
*详细：公用方法初始化 
*版本：1.0 
*日期：2013-03-22 
*说明： 
*↑↑↑↑↑↑↑↑↑↑ 
*/ 
$(function(){ 
/*1.失去焦点验证↓↓↓*/ 
$("#code").blur(callback);//1.code就是你要验证的唯一标志的控件ID 2.你控件后面必须要有个接收错误信息的控件 
/*2.提交时候验证↓↓↓*/ 
$("#submit").click(callback);//你页面的提交按钮ID 
}); 
/** 
*↓↓↓↓↓↓↓↓↓↓ 
*作者：ZhuangZi 
*类名：验证唯一标识公用方法 
*功能：唯一验证 
*详细：唯一标识ID和提交按钮ID要和下面保持一致 
*版本：1.0 
*日期：2013-03-22 
*说明： 
*↑↑↑↑↑↑↑↑↑↑ 
*/ 
function callback() { 
var slef=$("#code"); 
var code=slef.val(); 
var submit=$("#submit"); 
var flag=$("#flag").val(); 
if(null==code||""==code){ 
slef.next().html("下载包标识不能为空!"); 
submit.attr("disabled",true); 
return; 
}else{ 
if(!code.match("^\\w+$")){ 
slef.next().html("标识由数字母或下划线组成!"); 
return ; 
} 
slef.next().html("*"); 
} 
$.ajax({ 
type:'post', 
url:'../dictionary/checkCodeOnly.do', 
data:'bean.code='+code+'&bean.flag='+flag, 
dataType:'json', 
success:function(json){ 
if(json>0){ 
slef.next().html("此标识已存在!"); 
submit.attr("disabled",true); 
return ; 
}else{ 
slef.next().html(""); 
if(code != null && code!=""){ 
submit.attr("disabled",false); 
}else{ 
submit.attr("disabled",true); 
return; 
} 
} 
}, 
error:function(){ 
alert('验证信息出错'); 
} 
}); 
}

<s:hidden id="flag" value="3"/> <!-flag 什么类型的标志-> 
<tr> 
                   <td width="40%" height="33" class="addtabletd1">下载标识：</td> 
                   <td width="60%" height="33" class="addtabletd2"><div align="left"> 
                   <s:textfield id="code" name="yhaoPortalsDownBean.downFlag" cssClass="textfrom" cssStyle="width:150px;"  maxlength="200"/> 
                  <font id="codeInfo" color="red">*</font> 
                   </div></td> 
                 </tr>

/** 
* 
* @author ZhuangZi 
* @class com.hzdracom.action.YhaoPortalsDictionaryAction 
* @method checkCodeOnly 
* @Directions 验证唯一标识公用方法 
* @date 2013-3-21上午10:09:04 void 
*/ 
public void checkCodeOnly(){ 
String json=""; 
try{ 
json = String.valueOf(yhaoDictionaryService.checkCodeOnly(bean)); 
json=JSON.toJSONString(json); 
System.out.println("json=="+json); 
HttpServletResponse response=ServletActionContext.getResponse(); 
response.setContentType("text/html"); 
response.setCharacterEncoding("utf-8"); 
PrintWriter out; 
out = response.getWriter(); 
out.println(json); 
out.flush(); 
out.close(); 
}catch(Exception e){ 
e.printStackTrace(); 
} 
}

<PRE class=java name="code"> public int checkCodeOnly(DictionaryBean bean)throws DataAccessException,Exception { 
Object[] sqlParams = new Object[4]; 
int index = 0; 
String sql=""; 
/* 验证页面标志是否唯一*/ 
if (bean.getFlag().equals("1")) { 
sql = "select count(1) from YHAO_PORTALS_PAGE where PAGE_FLAG = ? "; 
sqlParams[index]=bean.getCode(); 
index++; 
} 
/* 验证类型志标识是否唯一*/ 
if (bean.getFlag().equals("2")) { 
sql = "select count(1) from YHAO_PORTALS_DOWNTYPE where DOWNTYPE_FLAG = ? "; 
sqlParams[index]=bean.getCode(); 
index++; 
} 
/* 验证下载志标识是否唯一*/ 
if (bean.getFlag().equals("3")) { 
sql = "select count(1) from YHAO_PORTALS_DOWN where DOWN_FLAG = ? "; 
sqlParams[index]=bean.getCode(); 
index++; 
} 
if (bean.getFlag().equals("4")) { 
sql = "select count(1) from YHAO_PORTALS_KUAI where KUAI_FLAG = ? "; 
sqlParams[index]=bean.getCode(); 
index++; 
} 
Object[] sqlParamsEnd = new Object[index]; 
System.arraycopy(sqlParams, 0, sqlParamsEnd, 0, index); 
int count = this.queryForInt(sql,sqlParamsEnd); 
return count; 
}</PRE> 
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