原文：https://blog.csdn.net/u013628196/article/details/55518075

java里面时间类型转换成json数据就成这样了：

  "createTime":{"date":30,"day":3,"hours":15,"minutes":14,"month":3,"nanos":0,"seconds":38,"time":1209539678000,"timezoneOffset":-480,"year":108}

期望的结果：

将date转化成yyyy-MM-dd HH:mm:ss形式

下面开始操作

maven导入的包：

<dependency>
            <groupId>net.sf.json-lib</groupId>
            <artifactId>json-lib</artifactId>
            <version>2.4</version>
            <classifier>jdk15</classifier>
        </dependency>

新建DateJsonValueProcessor 类

import net.sf.json.JsonConfig;
import net.sf.json.processors.JsonValueProcessor;

import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.util.Date;

public class DateJsonValueProcessor implements JsonValueProcessor  {
 
    private String format = "yyyy-MM-dd HH:mm:ss";
 
    public DateJsonValueProcessor() {
    }
 
    public DateJsonValueProcessor(String format) {
        this.format = format;
    }
    
    @Override
    public Object processArrayValue(Object value, JsonConfig jsonConfig) {
        String[] obj = {};
        if (value instanceof Date[]) {
        SimpleDateFormat sf = new SimpleDateFormat(format);
        Date[] dates = (Date[]) value;
        obj = new String[dates.length];
        for (int i = 0; i < dates.length; i++) {
        obj[i] = sf.format(dates[i]);
        }
        }
        return obj;
    }
 
    @Override
    public Object processObjectValue(String key, Object value, JsonConfig jsonConfig) {
        if (value instanceof Date) {
            String str = new SimpleDateFormat(format).format((Date) value);
            return str;
        }
            return value.toString();
        }
 
    public String getFormat() {
        return format;
    }
    public void setFormat(String format) {
        this.format = format;
    }
 
}

使用方法：

JsonConfig jsonConfig = new JsonConfig();
jsonConfig.registerJsonValueProcessor(java.util.Date.class, new DateJsonValueProcessor("yyyy-MM-dd HH:mm:ss"));
JSONArray jarray = JSONArray.fromObject(list,jsonConfig);
temp = jarray.toString();

注意事项：

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import net.sf.json.JsonConfig;

结果：

"createTime":"2017-02-17 13:59:18"