package sdcncsi.ict.site.web.xzsp;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import net.sf.json.JsonConfig;
import net.sf.json.processors.JsonValueProcessor;
import net.sf.json.xml.XMLSerializer;
public class JsonUtil {
/**
* 设置日期转换格式
*/
/*
* static { //注册器 MorpherRegistry mr = JSONUtils.getMorpherRegistry();
*
* //可转换的日期格式，即Json串中可以出现以下格式的日期与时间 DateMorpher dm = new DateMorpher(new
* String[] { Util.YYYY_MM_DD, Util.YYYY_MM_DD_HH_MM_ss, Util.HH_MM_ss,
* Util.YYYYMMDD, Util.YYYYMMDDHHMMSS, Util.HHMMss });
* mr.registerMorpher(dm); }
*/
/**
* 从json串转换成实体对象
*
* @param jsonObjStr
* e.g. {'name':'get','dateAttr':'2009-11-12'}
* @param clazz
* Person.class
* @return
*/
public static Object getDtoFromJsonObjStr(String jsonObjStr, Class clazz) {
return JSONObject.toBean(JSONObject.fromObject(jsonObjStr), clazz);
}
/**
* 从json串转换成实体对象，并且实体集合属性存有另外实体Bean
*
* @param jsonObjStr
* e.g. {'data':[{'name':'get'},{'name':'set'}]}
* @param clazz
* e.g. MyBean.class
* @param classMap
* e.g. classMap.put("data", Person.class)
* @return Object
*/
public static Object getDtoFromJsonObjStr(String jsonObjStr, Class clazz,
Map classMap) {
return JSONObject.toBean(JSONObject.fromObject(jsonObjStr), clazz,
classMap);
}
/**
* 把一个json数组串转换成普通数组
*
* @param jsonArrStr
* e.g. ['get',1,true,null]
* @return Object[]
*/
public static Object[] getArrFromJsonArrStr(String jsonArrStr) {
return JSONArray.fromObject(jsonArrStr).toArray();
}
/**
* 把一个json数组串转换成实体数组
*
* @param jsonArrStr
* e.g. [{'name':'get'},{'name':'set'}]
* @param clazz
* e.g. Person.class
* @return Object[]
*/
public static Object[] getDtoArrFromJsonArrStr(String jsonArrStr,
Class clazz) {
JSONArray jsonArr = JSONArray.fromObject(jsonArrStr);
Object[] objArr = new Object[jsonArr.size()];
for (int i = 0; i < jsonArr.size(); i++) {
objArr[i] = JSONObject.toBean(jsonArr.getJSONObject(i), clazz);
}
return objArr;
}
/**
* 把一个json数组串转换成实体数组，且数组元素的属性含有另外实例Bean
*
* @param jsonArrStr
* e.g. [{'data':[{'name':'get'}]},{'data':[{'name':'set'}]}]
* @param clazz
* e.g. MyBean.class
* @param classMap
* e.g. classMap.put("data", Person.class)
* @return Object[]
*/
public static Object[] getDtoArrFromJsonArrStr(String jsonArrStr,
Class clazz, Map classMap) {
JSONArray array = JSONArray.fromObject(jsonArrStr);
Object[] obj = new Object[array.size()];
for (int i = 0; i < array.size(); i++) {
JSONObject jsonObject = array.getJSONObject(i);
obj[i] = JSONObject.toBean(jsonObject, clazz, classMap);
}
return obj;
}
/**
* 把一个json数组串转换成存放普通类型元素的集合
*
* @param jsonArrStr
* e.g. ['get',1,true,null]
* @return List
*/
public static List getListFromJsonArrStr(String jsonArrStr) {
JSONArray jsonArr = JSONArray.fromObject(jsonArrStr);
List list = new ArrayList();
for (int i = 0; i < jsonArr.size(); i++) {
list.add(jsonArr.get(i));
}
return list;
}
/**
* 把一个json数组串转换成集合，且集合里存放的为实例Bean
*
* @param jsonArrStr
* e.g. [{'name':'get'},{'name':'set'}]
* @param clazz
* @return List
*/
public static List getListFromJsonArrStr(String jsonArrStr, Class clazz) {
JSONArray jsonArr = JSONArray.fromObject(jsonArrStr);
List list = new ArrayList();
for (int i = 0; i < jsonArr.size(); i++) {
list.add(JSONObject.toBean(jsonArr.getJSONObject(i), clazz));
}
return list;
}
/**
* 把一个json数组串转换成集合，且集合里的对象的属性含有另外实例Bean
*
* @param jsonArrStr
* e.g. [{'data':[{'name':'get'}]},{'data':[{'name':'set'}]}]
* @param clazz
* e.g. MyBean.class
* @param classMap
* e.g. classMap.put("data", Person.class)
* @return List
*/
public static List getListFromJsonArrStr(String jsonArrStr, Class clazz,
Map classMap) {
JSONArray jsonArr = JSONArray.fromObject(jsonArrStr);
List list = new ArrayList();
for (int i = 0; i < jsonArr.size(); i++) {
list.add(JSONObject.toBean(jsonArr.getJSONObject(i), clazz,
classMap));
}
return list;
}
/**
* 把json对象串转换成map对象
*
* @param jsonObjStr
* e.g. {'name':'get','int':1,'double',1.1,'null':null}
* @return Map
*/
public static Map getMapFromJsonObjStr(String jsonObjStr) {
JSONObject jsonObject = JSONObject.fromObject(jsonObjStr);
Map map = new HashMap();
for (Iterator iter = jsonObject.keys(); iter.hasNext();) {
String key = (String) iter.next();
map.put(key, jsonObject.get(key));
}
return map;
}
/**
* 把json对象串转换成map对象，且map对象里存放的为其他实体Bean
*
* @param jsonObjStr
* e.g. {'data1':{'name':'get'},'data2':{'name':'set'}}
* @param clazz
* e.g. Person.class
* @return Map
*/
public static Map getMapFromJsonObjStr(String jsonObjStr, Class clazz) {
JSONObject jsonObject = JSONObject.fromObject(jsonObjStr);
Map map = new HashMap();
for (Iterator iter = jsonObject.keys(); iter.hasNext();) {
String key = (String) iter.next();
map.put(key, JSONObject
.toBean(jsonObject.getJSONObject(key), clazz));
}
return map;
}
/**
* 把json对象串转换成map对象，且map对象里存放的其他实体Bean还含有另外实体Bean
*
* @param jsonObjStr
* e.g. {'mybean':{'data':[{'name':'get'}]}}
* @param clazz
* e.g. MyBean.class
* @param classMap
* e.g. classMap.put("data", Person.class)
* @return Map
*/
public static Map getMapFromJsonObjStr(String jsonObjStr, Class clazz,
Map classMap) {
JSONObject jsonObject = JSONObject.fromObject(jsonObjStr);
Map map = new HashMap();
for (Iterator iter = jsonObject.keys(); iter.hasNext();) {
String key = (String) iter.next();
map.put(key, JSONObject.toBean(jsonObject.getJSONObject(key),
clazz, classMap));
}
return map;
}
/**
* 把实体Bean、Map对象、数组、列表集合转换成Json串
*
* @param obj
* @return
* @throws Exception
* String
*/
public static String getJsonStr(Object obj) {
String jsonStr = null;
// Json配置
JsonConfig jsonCfg = new JsonConfig();
// 注册日期处理器
jsonCfg.registerJsonValueProcessor(java.util.Date.class,
// new JsonDateValueProcessor(Util.YYYY_MM_DD_HH_MM_ss));
new JsonDateValueProcessor("yyyy-MM-dd HH:mm:ss"));
if (obj == null) {
return "{}";
}
if (obj instanceof Collection || obj instanceof Object[]) {
jsonStr = JSONArray.fromObject(obj, jsonCfg).toString();
} else {
jsonStr = JSONObject.fromObject(obj, jsonCfg).toString();
}
return jsonStr;
}
/**
* 把json串、数组、集合(collection map)、实体Bean转换成XML XMLSerializer API：
* http://json-lib.sourceforge.net/apidocs/net/sf/json/xml/XMLSerializer.html
* 具体实例请参考：
* http://json-lib.sourceforge.net/xref-test/net/sf/json/xml/TestXMLSerializer_writes.html
* http://json-lib.sourceforge.net/xref-test/net/sf/json/xml/TestXMLSerializer_writes.html
*
* @param obj
* @return
* @throws Exception
* String
*/
public static String getXMLFromObj(Object obj) {
XMLSerializer xmlSerial = new XMLSerializer();
// Json配置
JsonConfig jsonCfg = new JsonConfig();
// 注册日期处理器
jsonCfg.registerJsonValueProcessor(java.util.Date.class,
// new JsonDateValueProcessor(Util.YYYY_MM_DD_HH_MM_ss));
new JsonDateValueProcessor("yyyy-MM-dd HH:mm:ss"));
if ((String.class.isInstance(obj) && String.valueOf(obj)
.startsWith("["))
|| obj.getClass().isArray() || Collection.class.isInstance(obj)) {
JSONArray jsonArr = JSONArray.fromObject(obj, jsonCfg);
return xmlSerial.write(jsonArr);
} else {
JSONObject jsonObj = JSONObject.fromObject(obj, jsonCfg);
return xmlSerial.write(jsonObj);
}
}
/**
* 从XML转json串
*
* @param xml
* @return String
*/
public static String getJsonStrFromXML(String xml) {
XMLSerializer xmlSerial = new XMLSerializer();
return String.valueOf(xmlSerial.read(xml));
}
}
/**
* json日期值处理器实现 (C) 2009-9-11, jzj
*/
class JsonDateValueProcessor implements JsonValueProcessor {
// private String format = Util.YYYY_MM_DD_HH_MM_ss;
private String format = "yyyy-MM-dd HH:mm:ss";
public JsonDateValueProcessor() {
}
public JsonDateValueProcessor(String format) {
this.format = format;
}
public Object processArrayValue(Object value, JsonConfig jsonConfig) {
return process(value, jsonConfig);
}
public Object processObjectValue(String key, Object value,
JsonConfig jsonConfig) {
return process(value, jsonConfig);
}
private Object process(Object value, JsonConfig jsonConfig) {
if (value instanceof Date) {
String str = new SimpleDateFormat(format).format((Date) value);
return str;
}
return value == null ? null : value.toString();
}
public String getFormat() {
return format;
}
public void setFormat(String format) {
this.format = format;
}
}
