jsp自定义标签

1.controller中查出数据
Map<String, Object> custom = customersController.basic(custId);
model.put("customer", custom);

2.JSP中接收code值调用自定义标签
<div class="profile-info-name"> 居住城市:</div>
    <div class="profile-info-value">
        <span>${fns:getCity(customer.lifeCode)}</span>
    </div>

3.fns.tld自定义标签
<?xml version="1.0" encoding="UTF-8" ?>
<taglib xmlns="http://java.sun.com/xml/ns/j2ee"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-jsptaglibrary_2_0.xsd"
        version="2.0">
    <function>
        <description>根据城市编码获取城市</description>
        <name>getCity</name>
        <function-class>com.loan.admin.web.utils.RestApiUtil</function-class>
        <function-signature>java.lang.String getCity(java.lang.String)</function-signature>
        <example>${fns:getCity(object)}</example>
    </function>
</taglib>

4.调用【com.loan.admin.web.utils.RestApiUtil】下getCity方法
    public static String getCity(String code){
        try {
            String name = "";
            String cityName = "";
            List<String> list = new ArrayList();
            Map<String, Object> params = Maps.newLinkedHashMap();
            while(!"0".equals(code)&&!"".equals(code)&&code!=null){
                params.put("code", code);
                String resp = RestApiUtil.doPost("loan/user/findChinaRegion/", params);
                JSONObject jsonObject = JSONObject.parseObject(resp);
                if(null!=jsonObject.get("result")&&!"".equals(jsonObject.get("result"))){
                    code = jsonObject.getJSONObject("result").getString("parentCode");
                    name = jsonObject.getJSONObject("result").getString("name");
                    list.add(name);
                }else{
                    break;
                }
            }
            for(int i=0;i<list.size();i++){
                cityName = list.get(i).toString() + cityName;
            }
            return  cityName;
        }catch (Exception e){
            return "";
        }
    }