项目用到的Json字串到Json对象转换
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<Cremind> 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<br/>
* <pre>
* StringBuilder sb = new StringBuilder("[");
* sb.append("{");
* sb.append("cremindTitle:\"xiaoqiang\",");
* sb.append("cremindDate:\"2012-06-0519:20:22\",");
* sb.append("cremindRemark:\"xiaoqiangremark\"");
* sb.append("}");
* sb.append("]");
* </pre>
* @param jsonArray
* @param classzz
*/
public static final <T> List<T> jsonArrayToList(String jsonArray,Class classzz){
JSONUtils.getMorpherRegistry().registerMorpher(
补充:软件开发 , Java ,