package com.chinatech.common.utils;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
/**
* the tool class for change json to object
* @author wanggang
* Email: [email protected]
*
*/
public class Json2Bean {
private static final boolean DEBUG = true;
@SuppressWarnings("unchecked")
public static <T> T getBean(String content, Class<T> beanClass) {
if(DEBUG)Logger.i(content);
T bean = null;
try {
JSONObject jsonObject = new JSONObject(content);
Iterator<String> keys = jsonObject.keys();
bean = beanClass.newInstance();
while(keys.hasNext()) {
String key = keys.next();
if(DEBUG)Logger.i("the field is '"+key+"'");
Field field;
try {
field = beanClass.getDeclaredField(key);
field.setAccessible(true);
field.set(bean, jsonObject.get(key));
} catch (NoSuchFieldException e) {
Logger.e("NoSuchFieldException");
e.printStackTrace();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
} catch (InstantiationException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IllegalAccessException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return bean;
}
@SuppressWarnings("rawtypes")
public static <T> List getList(String content, Class<T> beanClass) {
List<T> list;
if(DEBUG)Logger.i(content);
JSONArray jsonArray=null;
try {
jsonArray = new JSONArray(content);
} catch (JSONException e) {
Logger.e("The wrong JSON data format");
return null;
}
list=new ArrayList<T>();
for(int i=0;i<jsonArray.length();i++){
JSONObject jsonObject = (JSONObject)jsonArray.opt(i);
if(jsonObject!=null){
list.add(getBean(jsonObject.toString(),beanClass));
}
}
return list;
}
@SuppressWarnings("rawtypes")
public static <T> LinkedList getLinkedList(String content, Class<T> beanClass) {
LinkedList<T> list;
if(DEBUG)Logger.i(content);
JSONArray jsonArray=null;
try {
jsonArray = new JSONArray(content);
} catch (JSONException e) {
Logger.e("The wrong JSON data format");
return null;
}
list=new LinkedList<T>();
for(int i=0;i<jsonArray.length();i++){
JSONObject jsonObject = (JSONObject)jsonArray.opt(i);
if(jsonObject!=null){
list.add(getBean(jsonObject.toString(),beanClass));
}
}
return list;
}
}