📄 json数据与java数据的转换 - 两扇门 - javaeye技术网站.mht
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Date: Wed, 22 Oct 2008 17:47:12 +0800
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=BC=9A public class JsonUtil { =
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<P><SPAN style=3D"COLOR: #ff0000">1=E3=80=81DTO=EF=BC=9AData Transfer =
Object=EF=BC=8C=E6=95=B0=E6=8D=AE=E4=BC=A0=E9=80=81=E5=AF=B9=E8=B1=A1</SP=
AN></P>
<P><SPAN style=3D"COLOR: =
#ff0000">2=E3=80=81=E5=AF=B9=E4=BA=8E=E6=97=A5=E6=9C=9F=E6=A0=BC=E5=BC=8F=
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<P> </P>
<P>=E5=B7=A5=E5=85=B7=E7=B1=BBJsonUtil=E4=BB=A3=E7=A0=81=E5=A6=82=E4=B8=8B=
=EF=BC=9A</P>
<P> </P><PRE class=3Djava name=3D"code">public class JsonUtil {
=
/**=E9=A1=B5=E9=9D=A2=E4=BC=A0=E8=87=B3=E5=90=8E=E5=8F=B0=E6=97=B6=EF=BC=8C=
json=E6=95=B0=E6=8D=AE=E5=9C=A8request=E7=9A=84=E5=8F=82=E6=95=B0=E5=90=8D=
=E7=A7=B0*/
public final static String JSON_ATTRIBUTE =3D "json";
public final static String JSON_ATTRIBUTE1 =3D "json1";
public final static String JSON_ATTRIBUTE2 =3D "json2";
public final static String JSON_ATTRIBUTE3 =3D "json3";
public final static String JSON_ATTRIBUTE4 =3D "json4";
=09
/**
* =E4=BB=8E=E4=B8=80=E4=B8=AAJSON =
=E5=AF=B9=E8=B1=A1=E5=AD=97=E7=AC=A6=E6=A0=BC=E5=BC=8F=E4=B8=AD=E5=BE=97=E5=
=88=B0=E4=B8=80=E4=B8=AAjava=E5=AF=B9=E8=B1=A1=EF=BC=8C=E5=BD=A2=E5=A6=82=
=EF=BC=9A
* {"id" : idValue, "name" : nameValue, "aBean" : {"aBeanId" : =
aBeanIdValue, ...}}
* @param object
* @param clazz
* @return
*/
public static Object getDTO(String jsonString, Class clazz){
JSONObject jsonObject =3D null;
try{
setDataFormat2JAVA();=20
jsonObject =3D JSONObject.fromObject(jsonString);
}catch(Exception e){
e.printStackTrace();
}
return JSONObject.toBean(jsonObject, clazz);
}
=09
/**
* =E4=BB=8E=E4=B8=80=E4=B8=AAJSON =
=E5=AF=B9=E8=B1=A1=E5=AD=97=E7=AC=A6=E6=A0=BC=E5=BC=8F=E4=B8=AD=E5=BE=97=E5=
=88=B0=E4=B8=80=E4=B8=AAjava=E5=AF=B9=E8=B1=A1=EF=BC=8C=E5=85=B6=E4=B8=AD=
beansList=E6=98=AF=E4=B8=80=E7=B1=BB=E7=9A=84=E9=9B=86=E5=90=88=EF=BC=8C=E5=
=BD=A2=E5=A6=82=EF=BC=9A
* {"id" : idValue, "name" : nameValue, "aBean" : {"aBeanId" : =
aBeanIdValue, ...},
* beansList:[{}, {}, ...]}
* @param jsonString
* @param clazz
* @param map =
=E9=9B=86=E5=90=88=E5=B1=9E=E6=80=A7=E7=9A=84=E7=B1=BB=E5=9E=8B (key : =
=E9=9B=86=E5=90=88=E5=B1=9E=E6=80=A7=E5=90=8D, value : =
=E9=9B=86=E5=90=88=E5=B1=9E=E6=80=A7=E7=B1=BB=E5=9E=8Bclass) eg: =
("beansList" : Bean.class)
* @return
*/
public static Object getDTO(String jsonString, Class clazz, Map map){
JSONObject jsonObject =3D null;
try{
setDataFormat2JAVA();=20
jsonObject =3D JSONObject.fromObject(jsonString);
}catch(Exception e){
e.printStackTrace();
}
return JSONObject.toBean(jsonObject, clazz, map);
}
=09
/**
* =
=E4=BB=8E=E4=B8=80=E4=B8=AAJSON=E6=95=B0=E7=BB=84=E5=BE=97=E5=88=B0=E4=B8=
=80=E4=B8=AAjava=E5=AF=B9=E8=B1=A1=E6=95=B0=E7=BB=84=EF=BC=8C=E5=BD=A2=E5=
=A6=82=EF=BC=9A
* [{"id" : idValue, "name" : nameValue}, {"id" : idValue, "name" : =
nameValue}, ...]
* @param object
* @param clazz
* @return
*/
public static Object[] getDTOArray(String jsonString, Class clazz){
setDataFormat2JAVA();
JSONArray array =3D JSONArray.fromObject(jsonString);
Object[] obj =3D new Object[array.size()];
for(int i =3D 0; i < array.size(); i++){
JSONObject jsonObject =3D array.getJSONObject(i);
obj[i] =3D JSONObject.toBean(jsonObject, clazz);
}
return obj;
}
=09
/**
* =
=E4=BB=8E=E4=B8=80=E4=B8=AAJSON=E6=95=B0=E7=BB=84=E5=BE=97=E5=88=B0=E4=B8=
=80=E4=B8=AAjava=E5=AF=B9=E8=B1=A1=E6=95=B0=E7=BB=84=EF=BC=8C=E5=BD=A2=E5=
=A6=82=EF=BC=9A
* [{"id" : idValue, "name" : nameValue}, {"id" : idValue, "name" : =
nameValue}, ...]
* @param object
* @param clazz
* @param map
* @return
*/
public static Object[] getDTOArray(String jsonString, Class clazz, Map =
map){
setDataFormat2JAVA();
JSONArray array =3D JSONArray.fromObject(jsonString);
Object[] obj =3D new Object[array.size()];
for(int i =3D 0; i < array.size(); i++){
JSONObject jsonObject =3D array.getJSONObject(i);
obj[i] =3D JSONObject.toBean(jsonObject, clazz, map);
}
return obj;
}
=09
/**
* =
=E4=BB=8E=E4=B8=80=E4=B8=AAJSON=E6=95=B0=E7=BB=84=E5=BE=97=E5=88=B0=E4=B8=
=80=E4=B8=AAjava=E5=AF=B9=E8=B1=A1=E9=9B=86=E5=90=88
* @param object
* @param clazz
* @return
*/
public static List getDTOList(String jsonString, Class clazz){
setDataFormat2JAVA();
JSONArray array =3D JSONArray.fromObject(jsonString);
List list =3D new ArrayList();
for(Iterator iter =3D array.iterator(); iter.hasNext();){
JSONObject jsonObject =3D (JSONObject)iter.next();
list.add(JSONObject.toBean(jsonObject, clazz));
}
return list;
}
=09
/**
* =
=E4=BB=8E=E4=B8=80=E4=B8=AAJSON=E6=95=B0=E7=BB=84=E5=BE=97=E5=88=B0=E4=B8=
=80=E4=B8=AAjava=E5=AF=B9=E8=B1=A1=E9=9B=86=E5=90=88=EF=BC=8C=E5=85=B6=E4=
=B8=AD=E5=AF=B9=E8=B1=A1=E4=B8=AD=E5=8C=85=E5=90=AB=E6=9C=89=E9=9B=86=E5=90=
=88=E5=B1=9E=E6=80=A7
* @param object
* @param clazz
* @param map =
=E9=9B=86=E5=90=88=E5=B1=9E=E6=80=A7=E7=9A=84=E7=B1=BB=E5=9E=8B
* @return
*/
public static List getDTOList(String jsonString, Class clazz, Map map){
setDataFormat2JAVA();
JSONArray array =3D JSONArray.fromObject(jsonString);
List list =3D new ArrayList();
for(Iterator iter =3D array.iterator(); iter.hasNext();){
JSONObject jsonObject =3D (JSONObject)iter.next();
list.add(JSONObject.toBean(jsonObject, clazz, map));
}
return list;
}
=09
/**
* =E4=BB=8Ejson =
HASH=E8=A1=A8=E8=BE=BE=E5=BC=8F=E4=B8=AD=E8=8E=B7=E5=8F=96=E4=B8=80=E4=B8=
=AAmap=EF=BC=8C=E8=AF=A5map=E6=94=AF=E6=8C=81=E5=B5=8C=E5=A5=97=E5=8A=9F=E8=
=83=BD
* =E5=BD=A2=E5=A6=82=EF=BC=9A{"id" : "johncon", "name" : =
"=E5=B0=8F=E5=BC=BA"}
* =
=E6=B3=A8=E6=84=8Fcommons-collections=E7=89=88=E6=9C=AC=EF=BC=8C=E5=BF=85=
=E9=A1=BB=E5=8C=85=E5=90=ABorg.apache.commons.collections.map.MultiKeyMap=
* @param object
* @return
*/
public static Map getMapFromJson(String jsonString) {
setDataFormat2JAVA();
JSONObject jsonObject =3D JSONObject.fromObject(jsonString);
Map map =3D new HashMap();
for(Iterator iter =3D jsonObject.keys(); iter.hasNext();){
String key =3D (String)iter.next();
map.put(key, jsonObject.get(key));
}
return map;
}
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