带有Date数据的实体类在转为 JSON数据直接转会：

[{

"meaparam_id":1,"m_time":"2017-08",

"ts":{"nanos":0,"time":1501048842000,"minutes":0,"seconds":42,"hours":14,"month":6,"year":117,"timezoneOffset":-480,"day":3,"date":26},

"pk_id":15,"m_name":"ert","dr":0

}]

但我们希望

[{

"meaparam_id":1,"m_time":"2017-08","ts":"2017-07-26 14:00:42","pk_id":15,"m_name":"ert","dr":0

}]

可以使用下面方法：

public class JsonDateValueProcessor implements JsonValueProcessor {  
    private String format = "yyyy-MM-dd HH:mm:ss";     
    public Object processArrayValue(Object value, JsonConfig config) {  
        return process(value);   
    }  
    public Object processObjectValue(String arg0, Object value, JsonConfig config) {  
         return process(value);    
    }  
    private Object process(Object value){     
        //遇到类型为日期的，就自动转换成“yyyy-MM-dd HH:mm:ss”格式的字符串  
        if(value instanceof Date){     
            SimpleDateFormat sdf = new SimpleDateFormat(format,Locale.UK);     
            return sdf.format(value);     
        }
        return value == null ? "" : value.toString();     
    }
}  

JsonConfig jsonConfig = new JsonConfig();
jsonConfig.registerJsonValueProcessor(Date.class, new JsonDateValueProcessor());
JSONArray json = JSONArray.fromObject(pageResult.getData(),jsonConfig);
System.out.println(json);