验证名称是否唯一的JS代码(验证左侧右侧是否为空)

原创

警钟长鸣 2012-09-03 16:10:46 博主文章分类：工作总结 ©著作权

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    // 验证名称是否重复
    function saveFun() {
        var flag = true;
        var contentTypeId = $("#contentTypeId").val();
        var nameObj = $('#nameAttribute');
        if (nameObj.length > 0) {
            //验证名称的唯一性
            var name = nameObj.val();
            var nameTrim = $.trim(name);
            if(nameTrim == ''){
                flag = false;
                alert("名称不能为空");
            }else if(checkLeftIsNull(name)){
                flag = false;
                alert("请去掉名称左侧空格");
            }else if(checkRightIsNull(name)){
                flag = false;
                alert("请去掉名称右侧空格");
            }else{
                // 验证是否左侧有空格如果是的话则让去掉左侧空格   左侧空格右侧空格
                flag = checkNameIsChongFu(nameTrim,contentTypeId);
                if(!flag){
                    alert("名称重复,请修改");
                }
            }
        }


        if(flag){
            var msgs = $('span[name=validateMsg]:visible');
            if (msgs.length > 0) {
                alert('您有填写内容的格式不正确的信息！');
            }
            flag = (msgs.length == 0);
        }

        if(flag){
            $('#formID').submit();
        }

    }

    function checkLeftIsNull(data){
            var regexEmail = /^\s+/;
            if (data.match(regexEmail) == null) {
                return false;
            }
        return true;
    }
    function checkRightIsNull(data){
            var regexEmail = /\s+$/;
            if (data.match(regexEmail) == null) {
                return false;
            }
        return true;
    }
    // 验证知识的名称是否重复
    function checkNameIsChongFu(name,contentTypeId){
           var flag;
           $.ajax({
                url : '<c:url value="/contentmanage!checkName"/>',
                type : 'post',
                async: false,//使用同步的方式,true为异步方式
                data : {name:name,hidContentTypeId:contentTypeId},//这里使用json对象
                dataType : 'json',
                success : function(data){
                //code here...
                var obj = eval（data);
                if(obj.status == "1"){
                    flag = true;
                    }else{
                        flag = false;
                    }
                }
        });
        return flag;
    }

后台：

    public String checkName(){
        Map map = new HashMap();
        KnowledgeClient knowledgeClient = new KnowledgeClient();
        KnowledgeSelector selector = new KnowledgeSelector();
        selector.setType(Constants.ASSIST_QUERY_EXSIT);
        selector.setCatalogId(hidContentTypeId);
        selector.setAssistParam(new AssistParam(name));
        KnowledgeResponse response =knowledgeClient.getAssistInfo(selector);
        int status = response.getStatus();
        System.out.println(response.getStatus());
        if (status == Constants.SUCCESS){
            logger.info("知识名称name为： " + name + "不重复,可以使用");
            map.put("status", "1");
        }else if(status == Constants.NAME_IDENTIFY_EXSIT){
            logger.info("知识名称name为： " + name + "重复");
            map.put("status", "2");
        }else{
            logger.info("验证名称name为: "+ name + "是否重复失败，失败原因为：" + response.getDesc());
            map.put("status", "3");
        }
        JSONObject jsonObject = (JSONObject) JSONSerializer.toJSON(map);
        return ajaxJson(jsonObject.toString());

    }

// 根据字符串输出JSON，返回null
    public String ajaxJson(String jsonString) {
        return ajax(jsonString, "text/html");
    }

    // AJAX输出，返回null
    public String ajax(String content, String type) {
        try {
            HttpServletResponse response = ServletActionContext.getResponse();
            response.setContentType(type + ";charset=UTF-8");
            response.setHeader("Pragma", "No-cache");
            response.setHeader("Cache-Control", "no-cache");
            response.setDateHeader("Expires", 0);
            response.getWriter().write(content);
            response.getWriter().flush();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }