date 转化成Json 字符串

工具类：

package com.hyzl.bpm.util;


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


/** * JSON 日期格式处理（java转化为JSON） */
public class JsonDateValueProcessor implements JsonValueProcessor {
private static JsonDateValueProcessor dateValueProcessor;
/**
* datePattern
*/
private String datePattern = "yyyy-MM-dd HH:mm:ss";


private JsonDateValueProcessor(){
}
public static JsonDateValueProcessor getInstance(){
if(dateValueProcessor==null){
dateValueProcessor = new JsonDateValueProcessor();
}
return dateValueProcessor;
}
public Object processArrayValue(Object value, JsonConfig jsonConfig) {
return process(value);
}


public Object processObjectValue(String key, Object value,
JsonConfig jsonConfig) {
return process(value);
}
// 用于格式化date类型的值
private Object process(Object value) {
try {
if (value instanceof Date) {
SimpleDateFormat sdf = new SimpleDateFormat(datePattern,
Locale.CHINESE);
return sdf.format((Date) value);
}
return value == null ? "" : value.toString();
} catch (Exception e) {
return "";
}
}
public static JsonConfig getJsonConfig(){
JsonConfig jcfg = new JsonConfig();
jcfg.registerJsonValueProcessor(Date.class,JsonDateValueProcessor.getInstance());
return jcfg;
}
}

把工具类放入工程，

页面用使用： JSONObject.fromObject(dataMap,JsonDateValueProcessor.getJsonConfig());