JSONArray对日期类型的按指定格式转换的实现

1、DateJsonValueProcessor.java

package com.px.util;

import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import net.sf.json.JsonConfig;
import net.sf.json.processors.JsonValueProcessor;
import java.util.Date;

/**
 * JSONArray对日期类型的按指定格式转换的实现
 * 
 * @author liyulin lyl010991@126.com
 * @version 1.0 2015-03-17
 */
public class DateJsonValueProcessor implements JsonValueProcessor {

    private String formate;

    public DateJsonValueProcessor() {
        this.formate = "yyyy-MM-dd hh:mm:ss";
    }

    public DateJsonValueProcessor(String formate) {
        this.formate = formate;
    }

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

    public Object processObjectValue(String key, Object value, JsonConfig jsonConfig) {
        if (value instanceof Date || value instanceof Timestamp) {
            String str = new SimpleDateFormat(this.formate).format((Date) value);
            return str;
        } 
        return null;
    }

    public String getFormate() {
        return formate;
    }

    public void setFormate(String formate) {
        this.formate = formate;
    }

}

2、处理

JsonConfig jf = new JsonConfig();  
jf.registerJsonValueProcessor(java.sql.Timestamp.class, new DateJsonValueProcessor());  
jf.registerJsonValueProcessor(java.util.Date.class, new DateJsonValueProcessor()); 
JSONArray.fromObject(ssypList, jf).toString();