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安卓应用

Android-XML反序列化(XML解析)、JSON序列化与反序列化(JSON生成与解析)(含json smart类)

时间:2017-09-19 17:52:33   作者:江节胜   来源:胜行天下   阅读:513   评论:0
JSONHelper.java
package com.jiangjiesheng.utils;

import java.lang.reflect.Array;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.json.JSONStringer;

import android.util.Log;

/**
 * 类说明 :支持JSON 序列化和反序列化
 * 
 * @author 作者 江节胜 E-mail:jiangjsheng@qq.com
 * @version 创建时间:2016年7月23日 下午2:05:44
 * 
 */

public class JSONHelper {
	private static String TAG = "JSONHelper";

	/**
	 * 将对象转换成Json字符串
	 * 
	 * @param obj
	 * @return json类型字符串
	 */
	public static String toJSON(Object obj) {
		JSONStringer js = new JSONStringer();
		serialize(js, obj);
		return js.toString();
	}

	/**
	 * 序列化为JSON
	 * 
	 * @param js
	 *            json对象
	 * @param o
	 *            待需序列化的对象
	 */
	private static void serialize(JSONStringer js, Object o) {
		if (isNull(o)) {
			try {
				js.value(null);
			} catch (JSONException e) {
				e.printStackTrace();
			}
			return;
		}
		Class<?> clazz = o.getClass();
		if (isObject(clazz)) { // 对象
			serializeObject(js, o);
		} else if (isArray(clazz)) { // 数组
			serializeArray(js, o);
		} else if (isCollection(clazz)) { // 集合
			Collection<?> collection = (Collection<?>) o;
			serializeCollect(js, collection);
		} else if (isMap(clazz)) { // 集合
			HashMap<?, ?> collection = (HashMap<?, ?>) o;
			serializeMap(js, collection);
		} else { // 单个值
			try {
				js.value(o);
			} catch (JSONException e) {
				e.printStackTrace();
			}
		}
	}

	/**
	 * 序列化数组
	 * 
	 * @param js
	 *            json对象
	 * @param array
	 *            数组
	 */
	private static void serializeArray(JSONStringer js, Object array) {
		try {
			js.array();
			for (int i = 0; i < Array.getLength(array); ++i) {
				Object o = Array.get(array, i);
				serialize(js, o);
			}
			js.endArray();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * 序列化集合
	 * 
	 * @param js
	 *            json对象
	 * @param collection
	 *            集合
	 */
	private static void serializeCollect(JSONStringer js,
			Collection<?> collection) {
		try {
			js.array();
			for (Object o : collection) {
				serialize(js, o);
			}
			js.endArray();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * 序列化Map
	 * 
	 * @param js
	 *            json对象
	 * @param map
	 *            map对象
	 */
	private static void serializeMap(JSONStringer js, Map<?, ?> map) {
		try {
			js.object();
			@SuppressWarnings("unchecked")
			Map<String, Object> valueMap = (Map<String, Object>) map;
			Iterator<Map.Entry<String, Object>> it = valueMap.entrySet()
					.iterator();
			while (it.hasNext()) {
				Map.Entry<String, Object> entry = (Map.Entry<String, Object>) it
						.next();
				js.key(entry.getKey());
				serialize(js, entry.getValue());
			}
			js.endObject();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * 序列化对象
	 * 
	 * @param js
	 *            json对象
	 * @param obj
	 *            待序列化对象
	 */
	private static void serializeObject(JSONStringer js, Object obj) {
		try {
			js.object();
			Class<? extends Object> objClazz = obj.getClass();
			Method[] methods = objClazz.getDeclaredMethods();
			Field[] fields = objClazz.getDeclaredFields();
			for (Field field : fields) {
				try {
					String fieldType = field.getType().getSimpleName();
					String fieldGetName = parseMethodName(field.getName(),
							"get");
					if (!haveMethod(methods, fieldGetName)) {
						continue;
					}
					Method fieldGetMet = objClazz.getMethod(fieldGetName,
							new Class[] {});
					Object fieldVal = fieldGetMet.invoke(obj, new Object[] {});
					String result = null;
					if ("Date".equals(fieldType)) {
						SimpleDateFormat sdf = new SimpleDateFormat(
								"yyyy-MM-dd HH:mm:ss", Locale.US);
						result = sdf.format((Date) fieldVal);
					} else {
						if (null != fieldVal) {
							result = String.valueOf(fieldVal);
						}
					}
					js.key(field.getName());
					serialize(js, result);
				} catch (Exception e) {
					continue;
				}
			}
			js.endObject();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * 判断是否存在某属性的 get方法
	 * 
	 * @param methods
	 *            引用方法的数组
	 * @param fieldMethod
	 *            方法名称
	 * @return true或者false
	 */
	public static boolean haveMethod(Method[] methods, String fieldMethod) {
		for (Method met : methods) {
			if (fieldMethod.equals(met.getName())) {
				return true;
			}
		}
		return false;
	}

	/**
	 * 拼接某属性的 get或者set方法
	 * 
	 * @param fieldName
	 *            字段名称
	 * @param methodType
	 *            方法类型
	 * @return 方法名称
	 */
	public static String parseMethodName(String fieldName, String methodType) {
		if (null == fieldName || "".equals(fieldName)) {
			return null;
		}
		return methodType + fieldName.substring(0, 1).toUpperCase()
				+ fieldName.substring(1);
	}

	/**
	 * 给字段赋值
	 * 
	 * @param obj
	 *            实例对象
	 * @param valMap
	 *            值集合
	 */
	public static void setFieldValue(Object obj, Map<String, String> valMap) {
		Class<?> cls = obj.getClass();
		// 取出bean里的所有方法
		Method[] methods = cls.getDeclaredMethods();
		Field[] fields = cls.getDeclaredFields();
		for (Field field : fields) {
			try {
				String setMetodName = parseMethodName(field.getName(), "set");
				if (!haveMethod(methods, setMetodName)) {
					continue;
				}
				Method fieldMethod = cls.getMethod(setMetodName,
						field.getType());
				String value = valMap.get(field.getName());
				if (null != value && !"".equals(value)) {
					String fieldType = field.getType().getSimpleName();
					if ("String".equals(fieldType)) {
						fieldMethod.invoke(obj, value);
					} else if ("Date".equals(fieldType)) {
						SimpleDateFormat sdf = new SimpleDateFormat(
								"yyyy-MM-dd HH:mm:ss", Locale.US);
						Date temp = sdf.parse(value);
						fieldMethod.invoke(obj, temp);
					} else if ("Integer".equals(fieldType)
							|| "int".equals(fieldType)) {
						Integer intval = Integer.parseInt(value);
						fieldMethod.invoke(obj, intval);
					} else if ("Long".equalsIgnoreCase(fieldType)) {
						Long temp = Long.parseLong(value);
						fieldMethod.invoke(obj, temp);
					} else if ("Double".equalsIgnoreCase(fieldType)) {
						Double temp = Double.parseDouble(value);
						fieldMethod.invoke(obj, temp);
					} else if ("Boolean".equalsIgnoreCase(fieldType)) {
						Boolean temp = Boolean.parseBoolean(value);
						fieldMethod.invoke(obj, temp);
					} else {
						System.out.println("setFieldValue not supper type:"
								+ fieldType);
					}
				}
			} catch (Exception e) {
				continue;
			}
		}
	}

	/**
	 * bean对象转Map
	 * 
	 * @param obj
	 *            实例对象
	 * @return map集合
	 */
	public static Map<String, String> beanToMap(Object obj) {
		Class<?> cls = obj.getClass();
		Map<String, String> valueMap = new HashMap<String, String>();
		// 取出bean里的所有方法
		Method[] methods = cls.getDeclaredMethods();
		Field[] fields = cls.getDeclaredFields();
		for (Field field : fields) {
			try {
				String fieldType = field.getType().getSimpleName();
				String fieldGetName = parseMethodName(field.getName(), "get");
				if (!haveMethod(methods, fieldGetName)) {
					continue;
				}
				Method fieldGetMet = cls
						.getMethod(fieldGetName, new Class[] {});
				Object fieldVal = fieldGetMet.invoke(obj, new Object[] {});
				String result = null;
				if ("Date".equals(fieldType)) {
					SimpleDateFormat sdf = new SimpleDateFormat(
							"yyyy-MM-dd HH:mm:ss", Locale.CHINA);
					result = sdf.format((Date) fieldVal);
				} else {
					if (null != fieldVal) {
						result = String.valueOf(fieldVal);
					}
				}
				valueMap.put(field.getName(), result);
			} catch (Exception e) {
				continue;
			}
		}
		return valueMap;
	}

	/**
	 * 给对象的字段赋值
	 * 
	 * @param obj
	 *            类实例
	 * @param fieldSetMethod
	 *            字段方法
	 * @param fieldType
	 *            字段类型
	 * @param value
	 */
	public static void setFiedlValue(Object obj, Method fieldSetMethod,
			String fieldType, Object value) {
		try {
			if (null != value && !"".equals(value)) {
				if ("String".equals(fieldType)) {
					fieldSetMethod.invoke(obj, value.toString());
				} else if ("Date".equals(fieldType)) {
					SimpleDateFormat sdf = new SimpleDateFormat(
							"yyyy-MM-dd HH:mm:ss", Locale.CHINA);
					Date temp = sdf.parse(value.toString());
					fieldSetMethod.invoke(obj, temp);
				} else if ("Integer".equals(fieldType)
						|| "int".equals(fieldType)) {
					Integer intval = Integer.parseInt(value.toString());
					fieldSetMethod.invoke(obj, intval);
				} else if ("Long".equalsIgnoreCase(fieldType)) {
					Long temp = Long.parseLong(value.toString());
					fieldSetMethod.invoke(obj, temp);
				} else if ("Double".equalsIgnoreCase(fieldType)) {
					Double temp = Double.parseDouble(value.toString());
					fieldSetMethod.invoke(obj, temp);
				} else if ("Boolean".equalsIgnoreCase(fieldType)) {
					Boolean temp = Boolean.parseBoolean(value.toString());
					fieldSetMethod.invoke(obj, temp);
				} else {
					fieldSetMethod.invoke(obj, value);
					Log.e(TAG, TAG + ">>>>setFiedlValue -> not supper type"
							+ fieldType);
				}
			}
		} catch (Exception e) {
			// Log.e(TAG, TAG + ">>>>>>>>>>set value error.",e);
			e.printStackTrace();
		}
	}

 
	/**
	 * 方法说明:字符串转json对象(反序列化) 新增
	 * @author 江节胜 ,E-mail:dev@jiangjiesheng.cn
	 * @version 创建时间:2017-9-6 下午3:47:12 
	 *
	 * @param jsonStr
	 * @return
	 * @throws JSONException
	 */
	public static JSONObject parseJSONObject(String jsonStr)
			throws JSONException {
		JSONObject jo = null;
		jo = new JSONObject(jsonStr);
		if (isNull(jo)) {
			return null;
		}
		return jo;
	}

	/**
	 * 反序列化简单对象 
	 * 
	 * !!!注意使用parseJSONObject()处理字符串转json对象
	 * 
	 * @param jo
	 *            json对象
	 * @param clazz
	 *            实体类类型
	 * @return 反序列化后的实例
	 * @throws JSONException
	 */
	public static <T> T parseObject(JSONObject jo, Class<T> clazz)
			throws JSONException {
		if (clazz == null || isNull(jo)) {
			return null;
		}

		T obj = newInstance(clazz);

		if (obj == null) {
			return null;
		}
		if (isMap(clazz)) {
			setField(obj, jo);
		} else {
			// 取出bean里的所有方法
			Method[] methods = clazz.getDeclaredMethods();
			Field[] fields = clazz.getDeclaredFields();
			for (Field f : fields) {
				String setMetodName = parseMethodName(f.getName(), "set");
				if (!haveMethod(methods, setMetodName)) {
					continue;
				}
				try {
					Method fieldMethod = clazz.getMethod(setMetodName,
							f.getType());
					setField(obj, fieldMethod, f, jo);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		}
		return obj;
	}

	/**
	 * 反序列化简单对象
	 * 
	 * !!!使用parseJSONObject()处理字符串转json对象
	 * 
	 * @param jsonStr
	 *            json字符串
	 * @param clazz
	 *            实体类类型
	 * @return 反序列化后的实例
	 * @throws JSONException
	 */
	public static <T> T parseObject(String jsonStr, Class<T> clazz)
			throws JSONException {
		if (clazz == null || jsonStr == null || jsonStr.length() == 0) {
			return null;
		}
		JSONObject jo = null;
		jo = new JSONObject(jsonStr);
		if (isNull(jo)) {
			return null;
		}
		return parseObject(jo, clazz);
	}

	/**
	 * 反序列化数组对象
	 * 
	 * @param ja
	 *            json数组
	 * @param clazz
	 *            实体类类型
	 * @return 反序列化后的数组
	 */
	public static <T> T[] parseArray(JSONArray ja, Class<T> clazz) {
		if (clazz == null || isNull(ja)) {
			return null;
		}
		int len = ja.length();
		@SuppressWarnings("unchecked")
		T[] array = (T[]) Array.newInstance(clazz, len);
		for (int i = 0; i < len; ++i) {
			try {
				JSONObject jo = ja.getJSONObject(i);
				T o = parseObject(jo, clazz);
				array[i] = o;
			} catch (JSONException e) {
				e.printStackTrace();
			}
		}
		return array;
	}

	/**
	 * 反序列化数组对象
	 * 
	 * @param jsonStr
	 *            json字符串
	 * @param clazz
	 *            实体类类型
	 * @return 序列化后的数组
	 */
	public static <T> T[] parseArray(String jsonStr, Class<T> clazz) {
		if (clazz == null || jsonStr == null || jsonStr.length() == 0) {
			return null;
		}
		JSONArray jo = null;
		try {
			jo = new JSONArray(jsonStr);
		} catch (JSONException e) {
			e.printStackTrace();
		}
		if (isNull(jo)) {
			return null;
		}
		return parseArray(jo, clazz);
	}

	/**
	 * 反序列化泛型集合
	 * 
	 * @param ja
	 *            json数组
	 * @param collectionClazz
	 *            集合类型
	 * @param genericType
	 *            实体类类型
	 * @return
	 * @throws JSONException
	 */
	@SuppressWarnings("unchecked")
	public static <T> Collection<T> parseCollection(JSONArray ja,
			Class<?> collectionClazz, Class<T> genericType)
			throws JSONException {
		if (collectionClazz == null || genericType == null || isNull(ja)) {
			return null;
		}
		Collection<T> collection = (Collection<T>) newInstance(collectionClazz);
		for (int i = 0; i < ja.length(); ++i) {
			try {
				JSONObject jo = ja.getJSONObject(i);
				T o = parseObject(jo, genericType);
				collection.add(o);
			} catch (JSONException e) {
				e.printStackTrace();
			}
		}
		return collection;
	}

	/**
	 * 反序列化泛型集合
	 * 
	 * @param jsonStr
	 *            json字符串
	 * @param collectionClazz
	 *            集合类型
	 * @param genericType
	 *            实体类类型
	 * @return 反序列化后的数组
	 * @throws JSONException
	 */
	public static <T> Collection<T> parseCollection(String jsonStr,
			Class<?> collectionClazz, Class<T> genericType)
			throws JSONException {
		if (collectionClazz == null || genericType == null || jsonStr == null
				|| jsonStr.length() == 0) {
			return null;
		}
		JSONArray jo = null;
		try {
			// 如果为数组,则此处转化时,需要去掉前面的键,直接后面的[]中的值
			int index = jsonStr.indexOf("[");
			String arrayString = null;
			// 获取数组的字符串
			if (-1 != index) {
				arrayString = jsonStr.substring(index);
			}
			// 如果为数组,使用数组转化
			if (null != arrayString) {
				jo = new JSONArray(arrayString);
			} else {
				jo = new JSONArray(jsonStr);
			}
		} catch (JSONException e) {
			e.printStackTrace();
		}
		if (isNull(jo)) {
			return null;
		}
		return parseCollection(jo, collectionClazz, genericType);
	}

	/**
	 * 根据类型创建对象
	 * 
	 * @param clazz
	 *            待创建实例的类型
	 * @return 实例对象
	 * @throws JSONException
	 */
	@SuppressWarnings({ "unchecked", "rawtypes" })
	private static <T> T newInstance(Class<T> clazz) throws JSONException {
		if (clazz == null)
			return null;
		T obj = null;
		if (clazz.isInterface()) {
			if (clazz.equals(Map.class)) {
				obj = (T) new HashMap();
			} else if (clazz.equals(List.class)) {
				obj = (T) new ArrayList();
			} else if (clazz.equals(Set.class)) {
				obj = (T) new HashSet();
			} else {
				throw new JSONException("unknown interface: " + clazz);
			}
		} else {
			try {
				obj = clazz.newInstance();
			} catch (Exception e) {
				throw new JSONException("unknown class type: " + clazz);
			}
		}
		return obj;
	}

	/**
	 * 设定Map的值
	 * 
	 * @param obj
	 *            待赋值字段的对象
	 * @param jo
	 *            json实例
	 */
	private static void setField(Object obj, JSONObject jo) {
		try {
			@SuppressWarnings("unchecked")
			Iterator<String> keyIter = jo.keys();
			String key;
			Object value;
			@SuppressWarnings("unchecked")
			Map<String, Object> valueMap = (Map<String, Object>) obj;
			while (keyIter.hasNext()) {
				key = (String) keyIter.next();
				value = jo.get(key);
				valueMap.put(key, value);
			}
		} catch (JSONException e) {
			e.printStackTrace();
		}
	}

	/**
	 * 设定字段的值
	 * 
	 * @param obj
	 *            待赋值字段的对象
	 * @param fieldSetMethod
	 *            字段方法名
	 * @param field
	 *            字段
	 * @param jo
	 *            json实例
	 */
	private static void setField(Object obj, Method fieldSetMethod,
			Field field, JSONObject jo) {
		String name = field.getName();
		Class<?> clazz = field.getType();
		try {
			if (isArray(clazz)) { // 数组
				Class<?> c = clazz.getComponentType();
				JSONArray ja = jo.optJSONArray(name);
				if (!isNull(ja)) {
					Object array = parseArray(ja, c);
					setFiedlValue(obj, fieldSetMethod, clazz.getSimpleName(),
							array);
				}
			} else if (isCollection(clazz)) { // 泛型集合
				// 获取定义的泛型类型
				Class<?> c = null;
				Type gType = field.getGenericType();
				if (gType instanceof ParameterizedType) {
					ParameterizedType ptype = (ParameterizedType) gType;
					Type[] targs = ptype.getActualTypeArguments();
					if (targs != null && targs.length > 0) {
						Type t = targs[0];
						c = (Class<?>) t;
					}
				}
				JSONArray ja = jo.optJSONArray(name);
				if (!isNull(ja)) {
					Object o = parseCollection(ja, clazz, c);
					setFiedlValue(obj, fieldSetMethod, clazz.getSimpleName(), o);
				}
			} else if (isSingle(clazz)) { // 值类型
				Object o = jo.opt(name);
				if (o != null) {
					setFiedlValue(obj, fieldSetMethod, clazz.getSimpleName(), o);
				}
			} else if (isObject(clazz)) { // 对象
				JSONObject j = jo.optJSONObject(name);
				if (!isNull(j)) {
					Object o = parseObject(j, clazz);
					setFiedlValue(obj, fieldSetMethod, clazz.getSimpleName(), o);
				}
			} else if (isList(clazz)) { // 列表
				// JSONObject j = jo.optJSONObject(name);
				// if (!isNull(j)) {
				// Object o = parseObject(j, clazz);
				// f.set(obj, o);
				// }
			} else {
				throw new Exception("unknow type!");
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * 设定字段的值
	 * 
	 * @param obj
	 *            待赋值字段的对象
	 * @param field
	 *            字段
	 * @param jo
	 *            json实例
	 */
	@SuppressWarnings("unused")
	private static void setField(Object obj, Field field, JSONObject jo) {
		String name = field.getName();
		Class<?> clazz = field.getType();
		try {
			if (isArray(clazz)) { // 数组
				Class<?> c = clazz.getComponentType();
				JSONArray ja = jo.optJSONArray(name);
				if (!isNull(ja)) {
					Object array = parseArray(ja, c);
					field.set(obj, array);
				}
			} else if (isCollection(clazz)) { // 泛型集合
				// 获取定义的泛型类型
				Class<?> c = null;
				Type gType = field.getGenericType();
				if (gType instanceof ParameterizedType) {
					ParameterizedType ptype = (ParameterizedType) gType;
					Type[] targs = ptype.getActualTypeArguments();
					if (targs != null && targs.length > 0) {
						Type t = targs[0];
						c = (Class<?>) t;
					}
				}
				JSONArray ja = jo.optJSONArray(name);
				if (!isNull(ja)) {
					Object o = parseCollection(ja, clazz, c);
					field.set(obj, o);
				}
			} else if (isSingle(clazz)) { // 值类型
				Object o = jo.opt(name);
				if (o != null) {
					field.set(obj, o);
				}
			} else if (isObject(clazz)) { // 对象
				JSONObject j = jo.optJSONObject(name);
				if (!isNull(j)) {
					Object o = parseObject(j, clazz);
					field.set(obj, o);
				}
			} else if (isList(clazz)) { // 列表
				JSONObject j = jo.optJSONObject(name);
				if (!isNull(j)) {
					Object o = parseObject(j, clazz);
					field.set(obj, o);
				}
			} else {
				throw new Exception("unknow type!");
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * 判断对象是否为空
	 * 
	 * @param obj
	 *            实例
	 * @return
	 */
	private static boolean isNull(Object obj) {
		if (obj instanceof JSONObject) {
			return JSONObject.NULL.equals(obj);
		}
		return obj == null;
	}

	/**
	 * 判断是否是值类型
	 * 
	 * @param clazz
	 * @return
	 */
	private static boolean isSingle(Class<?> clazz) {
		return isBoolean(clazz) || isNumber(clazz) || isString(clazz);
	}

	/**
	 * 是否布尔值
	 * 
	 * @param clazz
	 * @return
	 */
	public static boolean isBoolean(Class<?> clazz) {
		return (clazz != null)
				&& ((Boolean.TYPE.isAssignableFrom(clazz)) || (Boolean.class
						.isAssignableFrom(clazz)));
	}

	/**
	 * 是否数值
	 * 
	 * @param clazz
	 * @return
	 */
	public static boolean isNumber(Class<?> clazz) {
		return (clazz != null)
				&& ((Byte.TYPE.isAssignableFrom(clazz))
						|| (Short.TYPE.isAssignableFrom(clazz))
						|| (Integer.TYPE.isAssignableFrom(clazz))
						|| (Long.TYPE.isAssignableFrom(clazz))
						|| (Float.TYPE.isAssignableFrom(clazz))
						|| (Double.TYPE.isAssignableFrom(clazz)) || (Number.class
							.isAssignableFrom(clazz)));
	}

	/**
	 * 判断是否是字符串
	 * 
	 * @param clazz
	 * @return
	 */
	public static boolean isString(Class<?> clazz) {
		return (clazz != null)
				&& ((String.class.isAssignableFrom(clazz))
						|| (Character.TYPE.isAssignableFrom(clazz)) || (Character.class
							.isAssignableFrom(clazz)));
	}

	/**
	 * 判断是否是对象
	 * 
	 * @param clazz
	 * @return
	 */
	private static boolean isObject(Class<?> clazz) {
		return clazz != null && !isSingle(clazz) && !isArray(clazz)
				&& !isCollection(clazz) && !isMap(clazz);
	}

	/**
	 * 判断是否是数组
	 * 
	 * @param clazz
	 * @return
	 */
	public static boolean isArray(Class<?> clazz) {
		return clazz != null && clazz.isArray();
	}

	/**
	 * 判断是否是集合
	 * 
	 * @param clazz
	 * @return
	 */
	public static boolean isCollection(Class<?> clazz) {
		return clazz != null && Collection.class.isAssignableFrom(clazz);
	}

	/**
	 * 判断是否是Map
	 * 
	 * @param clazz
	 * @return
	 */
	public static boolean isMap(Class<?> clazz) {
		return clazz != null && Map.class.isAssignableFrom(clazz);
	}

	/**
	 * 判断是否是列表
	 * 
	 * @param clazz
	 * @return
	 */
	public static boolean isList(Class<?> clazz) {
		return clazz != null && List.class.isAssignableFrom(clazz);
	}
}


XMLHelper.java
package com.jiangjiesheng.xmlutil;

import java.io.Closeable;
import java.io.StringReader;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.List;

import org.xmlpull.v1.XmlPullParser;

import android.content.ContentValues;
import android.util.Xml;


/**
 * 类说明 :解析XML实体(仅仅支持XML反序列化)
 * @author 作者 江节胜 E-mail:jiangjsheng@qq.com 
 * @version 创建时间:2016年7月23日 下午2:07:30 
 *
 */
@SuppressWarnings("unchecked")
public class XMLHelper {

 public static <T> T parseModel(final Object result,
 final Class<?> clazzModel) {
 final T model = (T) newInstance(clazzModel);
 parse(result + "", new OnXmlCallback() {
 @Override
 public boolean onTagStart(String tagName, XmlPullParser xmlParser) {
 xmlToModel(xmlParser, model, tagName);
 return false;
 }

 @Override
 public boolean onTagEnd(String tagName) {
 return false;
 }
 });
 return model;
 }

 /**
 * 方法说明: 解析List,文件名要和数据中的父节点一样,并加上Model 单个model不需要在文件名上加Model,应该是分割数据的标记.
 * 
 * @return
 */
 public static <T> List<T> parseList(final Object result,
 final Class<?> clazzModel) {
 final List<T> lstModels = new ArrayList<T>();
 final String modelName = clazzModel.getSimpleName()
 .replace("Model", "");// 注意这里

 parse(result + "", new OnXmlCallback() {
 private T itemModel;

 @Override
 public boolean onTagStart(String tagName, XmlPullParser xmlParser) {
 if (tagName.equalsIgnoreCase(modelName)) {
 try {
 itemModel = (T) clazzModel.newInstance();
 } catch (Exception e) {
 e.printStackTrace();
 return true;
 }
 } else {
 xmlToModel(xmlParser, itemModel, tagName);
 }
 return false;
 }

 @Override
 public boolean onTagEnd(String tagName) {
 if (tagName.equalsIgnoreCase(modelName) && itemModel != null) {
 lstModels.add(itemModel);
 }
 return false;
 }
 });
 return lstModels;
 }

 public static void parse(String xmlStr, OnXmlCallback onXmlCallback) {
 try {
 parseXml(xmlStr, onXmlCallback);
 } catch (Exception e) {
 e.printStackTrace();
 }
 }

 public static String valueString(XmlPullParser xmlParser,
 String... defaultValue) {
 try {
 return xmlParser.nextText();
 } catch (Exception e) {
 }
 return defaultValue.length > 0 ? defaultValue[0] : "";
 }

 public static boolean valueBoolean(XmlPullParser xmlParser,
 boolean... defaultValue) {
 try {
 return Boolean.parseBoolean(valueString(xmlParser));
 } catch (Exception e) {

 }
 return defaultValue.length > 0 ? defaultValue[0] : false;
 }

 public static int valueInt(XmlPullParser xmlParser, int... defaultValue) {
 try {
 return Integer.parseInt(valueString(xmlParser));
 } catch (Exception e) {

 }
 return defaultValue.length > 0 ? defaultValue[0] : 0;
 }

 public static long valueLong(XmlPullParser xmlParser, int... defaultValue) {
 try {
 return Long.parseLong(valueString(xmlParser));
 } catch (Exception e) {

 }
 return defaultValue.length > 0 ? defaultValue[0] : 0;
 }

 public static double valueDouble(XmlPullParser xmlParser,
 double... defaultValue) {
 try {
 return Double.parseDouble(valueString(xmlParser));
 } catch (Exception e) {

 }
 return defaultValue.length > 0 ? defaultValue[0] : 0;
 }

 public static void xmlToModel(XmlPullParser xmlParser, Object model,
 String fieldName) {
 try {
 Object value = null;
 Field field = model.getClass().getDeclaredField(fieldName);
 field.setAccessible(true);
 if (field.getType() == String.class) {
 value = XMLHelper.valueString(xmlParser);
 } else if (field.getType() == Integer.TYPE) {
 value = XMLHelper.valueInt(xmlParser);
 } else if (field.getType() == Long.TYPE) {
 value = XMLHelper.valueLong(xmlParser);
 } else if (field.getType() == Double.TYPE) {
 value = XMLHelper.valueDouble(xmlParser);
 } else if (field.getType() == Boolean.TYPE) {
 value = XMLHelper.valueBoolean(xmlParser);
 } else {
 throw new IllegalArgumentException("ModelToContentValues, key:"
 + fieldName + "'s value type is: " + field.getType());
 }
 field.set(model, value);
 } catch (Exception e) {
 // e.printStackTrace();
 }
 }

 public static void closeStream(Closeable stream) {
 try {
 if (stream != null) {
 stream.close();
 }
 } catch (Exception e) {

 }
 }

 public static Object newInstance(Class<?> clazz) {
 try {
 return clazz.newInstance();
 } catch (Exception e) {

 }
 return null;
 }

 /**
 * convert model to ContentValues <BR/>
 * <H1>NOTE: model's fields must be same with columns.</H1>
 * 
 * @param model
 * @param columns
 */
 public static ContentValues modelToContentValues(Object model,
 String[] columns) {
 ContentValues values = new ContentValues();
 Class<?> clazz = model.getClass();
 for (int i = 0; i < columns.length; i++) {
 String key = columns[i];
 try {
 Field field = clazz.getDeclaredField(key);
 field.setAccessible(true);
 Object value = field.get(model);

 if (field.getType() == String.class) {
 values.put(key, (String) value);
 } else if (field.getType() == Boolean.TYPE) {
 values.put(key, (Boolean) value);
 } else if (field.getType() == Integer.TYPE) {
 values.put(key, (Integer) value);
 } else if (field.getType() == Long.TYPE) {
 values.put(key, (Long) value);
 } else if (field.getType() == Double.TYPE) {
 values.put(key, (Double) value);
 } else if (field.getType() == Float.TYPE) {
 values.put(key, (Float) value);
 } else if (field.getType() == Short.TYPE) {
 values.put(key, (Short) value);
 } else if (field.getType() == Byte.TYPE) {
 values.put(key, (Byte) value);
 } else {
 throw new IllegalArgumentException(
 "ModelToContentValues, key:" + key
 + "'s value type is: " + field.getType());
 }
 } catch (Exception e) {
 throw new IllegalStateException("ModelToContentValues.error "
 + e.getMessage());
 }
 }
 return values;
 }

 public static void parseXml(String xmlStr, OnXmlCallback onXmlCallback)
 throws Exception {
 XmlPullParser xmlParser = Xml.newPullParser();
 xmlParser.setInput(new StringReader(xmlStr));
 int evtType = xmlParser.getEventType();
 while (evtType != XmlPullParser.END_DOCUMENT) {
 String tagName = xmlParser.getName();
 switch (evtType) {
 case XmlPullParser.START_TAG:
 if (onXmlCallback.onTagStart(tagName, xmlParser)) {
 return;
 }
 break;

 case XmlPullParser.END_TAG:
 if (onXmlCallback.onTagEnd(tagName)) {
 return;
 }
 break;
 default:
 break;
 }
 evtType = xmlParser.next();
 }
 }

 public static interface OnXmlCallback {
 /**
 * start tag
 * 
 * @param tagName
 * @param value
 * @return if true Then break; Or continue.
 */
 public boolean onTagStart(String tagName, XmlPullParser xmlParser);

 /**
 * end tag
 * 
 * @param tagName
 * @return if true Then break; Or continue.
 */
 public boolean onTagEnd(String tagName);
 }
}

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