jsonArray和Java List对象互转，日期处理

List转jsonArray ：

// 格式化日期
JsonConfig jsonConfig = new JsonConfig();
DSHJsonDateValueProcessor dshJsonDateValueProcessor = new DSHJsonDateValueProcessor();
jsonConfig.registerJsonValueProcessor(Timestamp.class, dshJsonDateValueProcessor);
JSONArray jsonArray = JSONArray.fromObject(appUserGroupList, jsonConfig);

DSHJsonDateValueProcessor：

public class DSHJsonDateValueProcessor implements JsonValueProcessor {

    public Object processArrayValue(Object value, JsonConfig jsonConfig) {
        return process(value);
    }

    public Object processObjectValue(String key, Object value, JsonConfig jsonConfig) {
        return process(value);
    }

    private Object process(Object value){
        if(value instanceof Date){
            SimpleDateFormat sdf = new SimpleDateFormat(DSHUtils.DATEFORMAT_YYYY_MM_DD_24HH_MM_SS);
            return sdf.format(value);
        } else if (value instanceof Timestamp) {
            SimpleDateFormat sdf = new SimpleDateFormat(DSHUtils.DATEFORMAT_YYYY_MM_DD_24HH_MM_SS);
            return sdf.format(value);
        }
        return value == null ? "" : value.toString();
    }  

}

jsonArray转List：

JSONArray array = JSONArray.fromObject(appUserGroupListStr);
JSONUtils.getMorpherRegistry().registerMorpher(new DateMorpher(new String[] { "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss" }), true);
List<AppUserVO> appUserGroupList = (List<AppUserVO>) JSONArray.toList(array, new AppUserVO(), new JsonConfig());

注：VO对象里面日期属性不能用java.sql.Timestamp，得用java.util.Date