java后台后台解决 json-lib封装的时间

List<Dept> deptList = deptService.selectBypage(map);
int count = deptService.selectDept();
JSONArray ja = new JSONArray();
JsonConfig jf = new JsonConfig();
这种是时间戳Timestamp
jf.registerJsonValueProcessor(java.sql.Timestamp.class, new DateJsonValueProcessor("yyyy-MM-dd"));
还有一种是Date
jf.registerJsonValueProcessor(java.util.Date.class, new DateJsonValueProcessor("yyyy-MM-dd"));  
JSONObject jsonObject = new JSONObject();
jsonObject.put("count", count);
jsonObject.put("code", 0);
jsonObject.put("msg", "null");
jsonObject.put("data", ja.fromObject(deptList, jf));
注意：以上这种返回格式是使用layui所返回的json参数类型
DateJsonValueProcessor是实现了一个JsonValueProcessor接口
新建DateJsonValueProcessor实现json-lib中的sonValueProcessor接口
package com.siyuan.service.Impl;
import java.text.SimpleDateFormat;
import net.sf.json.JsonConfig;
import net.sf.json.processors.JsonValueProcessor;  
public class DateJsonValueProcessor implements JsonValueProcessor {
private String format;  
    public DateJsonValueProcessor(String format){  
        this.format = format;  
    }  
    public Object processArrayValue(Object value, JsonConfig jsonConfig)  
    {  
        return null;  
    }  
    public Object processObjectValue(String key, Object value, JsonConfig jsonConfig)  
    {  
        if(value == null)  
        {  
            return "";  
        }  
        if(value instanceof java.sql.Timestamp)  
        {  
            String str = new SimpleDateFormat(format).format((java.sql.Timestamp)value);  
            return str;  
        }  
        if (value instanceof java.util.Date)  
        {  
            String str = new SimpleDateFormat(format).format((java.util.Date) value);  
            return str;  
        }  
        return value.toString();  
    }  
}