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package com.platform.utils;
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import java.lang.reflect.Field;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.util.Iterator;
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import java.util.Map;
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import java.util.Map.Entry;
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public class UtilsHelper {
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/**
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*
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* @param clazz
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* @param req
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* @return
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*/
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public static Object newObjAndSetAttrsByClass(Class<?> clazz,
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Map<String, String> paramMap) {
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Object object = null;
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try {
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object = clazz.newInstance();
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Field[] fileds = clazz.getDeclaredFields();
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for (Field fs : fileds) {
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String fieldName = fs.getName();
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String fieldType = fs.getGenericType().toString()
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.replace("class ", ""); // 如果type是类类型，则前面包含"class "，后面跟类名
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if (paramMap.containsKey(fieldName)) {
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Method method = clazz.getDeclaredMethod(
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getAttributeSetName(fs), Class.forName(fieldType));
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String value = paramMap.get(fieldName);
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if ("java.lang.Integer".equals(fieldType)) {
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method.invoke(object, Integer.valueOf(value));
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} else {
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method.invoke(object, value);
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}
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}
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}
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} catch (InstantiationException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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} catch (IllegalAccessException e) {
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// TODO Auto-generated catch blockAQA
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e.printStackTrace();
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} catch (NoSuchMethodException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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} catch (SecurityException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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} catch (IllegalArgumentException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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} catch (InvocationTargetException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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} catch (ClassNotFoundException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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}
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return object;
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};
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/**
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*
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* @param object
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* @param req
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* @return
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*/
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public static Object newObjAndSetAttrsByInstance(Object object,
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Map<String, String> mapParam) {
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return newObjAndSetAttrsByClass(object.getClass(), mapParam);
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}
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/**
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* 生成属性{@fs}的set方法的名字
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*
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* @param fs
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* 属性对象
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* @return set方法的名字
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*/
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private static String getAttributeSetName(Field fs) {
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String fieldName = fs.getName();
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char[] cs = fieldName.toCharArray();
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cs[0] -= 32;
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return "set" + String.valueOf(cs);
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}
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public static <K, V> Map<K, V> updateMap(Map<K, V> map1, Map<K, V> map2) {
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if (null == map1 || map1.size() <= 0)
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return map2;
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Iterator<Entry<K, V>> iterator = map2.entrySet().iterator();
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while (iterator.hasNext()) {
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Map.Entry<K, V> entry = iterator.next();
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map1.put(entry.getKey(), entry.getValue());
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}
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return map1;
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}
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public static <K, V> boolean isSubMap(Map<K, V> map1, Map<K, V> map2) {
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boolean flag = true;
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if (null == map2 || map2.size() <= 0 || null == map1)
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return false;
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Iterator<Map.Entry<K, V>> iterator = map1.entrySet().iterator();
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while (iterator.hasNext()) {
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Map.Entry<K, V> entry = iterator.next();
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if (!map2.containsKey(entry.getKey())
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|| !map2.containsValue(entry.getValue()))
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return false;
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}
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return flag;
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}
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}
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