项目用到的Json字串到Json对象转换(一)

2014-11-24 08:36:40 · 作者: · 浏览: 4

如下代码:
[java]
StringBuilder sb = new StringBuilder("[");
sb.append("{");
sb.append("cremindTitle:\"小名\",");
sb.append("cremindDate:\"2012-06-05 19:20:22\",");
sb.append("cremindRemark:\"阿斯蒂芬\"");
sb.append("}");
sb.append("]");
List clist = JSONArray.toList(JSONArray.fromObject(sb.toString()),
Cremind.class);

在执行中会报错,原因是由于日期类型字串到日期类型Timestamp的转换,解决思路如下:
编写一个Morpher类继承自AbstractObjectMorpher
[java]
class TimeStampMorpher extends AbstractObjectMorpher{

private Logger LOG = Logger.getLogger(TimeStampMorpher.class);

private String format ="yyyy-MM-dd hh:mm:ss";
public void setFormat(String format) {
this.format = format;
}

public TimeStampMorpher() {
// TODO Auto-generated constructor stub
}

public TimeStampMorpher(String format) {
this.format = format;
}

@Override
public Object morph(Object dateStr) {
// TODO Auto-generated method stub

try {
java.util.Date date = new SimpleDateFormat(format).parse(dateStr.toString());
return new Timestamp(date.getTime());
} catch (ParseException e) {
// TODO Auto-generated catch block
if (LOG.isInfoEnabled())
LOG.info("日期格式可能无效,将采用系统当前日期");
e.printStackTrace();
}
return new java.sql.Timestamp(System.currentTimeMillis());//返回默认日期
}

@Override
public Class morphsTo() {
// TODO Auto-generated method stub
return Timestamp.class;
}
}

最终处理版本:
[java]
package com.defshare.foundation.global;

import java.sql.Timestamp;
import java.text.ParseException;
import java.text.SimpleDateFormat;

import java.util.List;

import org.apache.log4j.Logger;

import net.sf.ezmorph.object.AbstractObjectMorpher;
import net.sf.json.JSONArray;
import net.sf.json.util.JSONUtils;

class TimeStampMorpher extends AbstractObjectMorpher{

private Logger LOG = Logger.getLogger(TimeStampMorpher.class);

private String format ="yyyy-MM-dd hh:mm:ss";
public void setFormat(String format) {
this.format = format;
}

public TimeStampMorpher() {
// TODO Auto-generated constructor stub
}

public TimeStampMorpher(String format) {
this.format = format;
}

@Override
public Object morph(Object dateStr) {
// TODO Auto-generated method stub

try {
java.util.Date date = new SimpleDateFormat(format).parse(dateStr.toString());
return new Timestamp(date.getTime());
} catch (ParseException e) {
// TODO Auto-generated catch block
if (LOG.isInfoEnabled())
LOG.info("日期格式可能无效,将采用系统当前日期");
e.printStackTrace();
}
return new java.sql.Timestamp(System.currentTimeMillis());//返回默认日期
}

@Override
public Class morphsTo() {
// TODO Auto-generated method stub
return Timestamp.class;
}
}

public final class JsonUtil {

/**
* json数组字串到json数组对象

*

* StringBuilder sb = new StringBuilder("[");
* sb.append("{");
* sb.append("cremindTitle:\"xiaoqiang\",");
* sb.append("cremindDa