正在做一個進(jìn)銷存的項目，為了JSON和JAVA的POJO之間轉(zhuǎn)換，很費勁啊，
上傳，以備以后有用！
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
/**
* JSON和JAVA的POJO的相互轉(zhuǎn)換
*
* @author ptah 2009-10-16 JSONUtil.java
*/
public final class JSONUtil {
// 將String轉(zhuǎn)換成JSON
public static String string2json(String key, String value) {
JSONObject object = new JSONObject();
object.put(key, value);
return object.toString();
}
// 將JSON轉(zhuǎn)換成數(shù)組,其中valueClz為數(shù)組中存放的對象的Class
public static Object json2Array(String json, Class valueClz) {
JSONArray jsonArray = JSONArray.fromObject(json);
return JSONArray.toArray(jsonArray, valueClz);
}
// 將Collection轉(zhuǎn)換成JSON
public static String collection2json(Object object) {
JSONArray jsonArray = JSONArray.fromObject(object);
return jsonArray.toString();
}
// 將JSON轉(zhuǎn)換成Collection,其中collectionClz為Collection具體子類的Class,
// valueClz為Collection中存放的對象的Class
public static Collection json2Collection(String json, Class collectionClz,
Class valueClz) {
JSONArray jsonArray = JSONArray.fromObject(json);
return JSONArray.toCollection(jsonArray, valueClz);
}
// 將數(shù)組轉(zhuǎn)換成JSON
public static String array2json(Object object) {
JSONArray jsonArray = JSONArray.fromObject(object);
return jsonArray.toString();
}
// 將Map轉(zhuǎn)換成JSON
public static String map2json(Object object) {
JSONObject jsonObject = JSONObject.fromObject(object);
return jsonObject.toString();
}
// 將JSON轉(zhuǎn)換成Map,其中valueClz為Map中value的Class,keyArray為Map的key
public static Map json2Map(Object[] keyArray, String json, Class valueClz) {
JSONObject jsonObject = JSONObject.fromObject(json);
Map classMap = new HashMap();
for (int i = 0; i < keyArray.length; i++) {
classMap.put(keyArray[i], valueClz);
}
return (Map) JSONObject.toBean(jsonObject, Map.class, classMap);
}
// 將POJO轉(zhuǎn)換成JSON
public static String bean2json(Object object) {
JSONObject jsonObject = JSONObject.fromObject(object);
return jsonObject.toString();
}
// 將JSON轉(zhuǎn)換成POJO,其中beanClz為POJO的Class
public static Object json2Object(String json, Class beanClz) {
return JSONObject.toBean(JSONObject.fromObject(json), beanClz);
}
// 將JSON轉(zhuǎn)換成String
public static String json2String(String json, String key) {
JSONObject jsonObject = JSONObject.fromObject(json);
return jsonObject.get(key).toString();
}
}
轉(zhuǎn)載：http://nweiren.javaeye.com/category/82599?show_full=true