|
|
@@ -0,0 +1,132 @@
|
|
|
+package com.kede.common.utils;
|
|
|
+
|
|
|
+import java.beans.BeanInfo;
|
|
|
+import java.beans.Introspector;
|
|
|
+import java.beans.PropertyDescriptor;
|
|
|
+import java.lang.reflect.Method;
|
|
|
+import java.util.ArrayList;
|
|
|
+import java.util.HashMap;
|
|
|
+import java.util.List;
|
|
|
+import java.util.Map;
|
|
|
+
|
|
|
+
|
|
|
+/**
|
|
|
+ * Map工具类
|
|
|
+ *
|
|
|
+ */
|
|
|
+public class MapUtils {
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 从map集合中获取属性值
|
|
|
+ *
|
|
|
+ * @param <E>
|
|
|
+ * @param map map集合
|
|
|
+ * @param key 键对
|
|
|
+ * @param defaultValue 默认值
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ @SuppressWarnings({ "unchecked", "rawtypes" })
|
|
|
+ public final static <E> E get(Map map, Object key, E defaultValue) {
|
|
|
+ Object o = map.get(key);
|
|
|
+ if (o == null)
|
|
|
+ return defaultValue;
|
|
|
+ return (E) o;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Map集合对象转化成 JavaBean集合对象
|
|
|
+ *
|
|
|
+ * @param javaBean JavaBean实例对象
|
|
|
+ * @param mapList Map数据集对象
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ @SuppressWarnings({ "rawtypes" })
|
|
|
+ public static <T> List<T> map2Java(T javaBean, List<Map> mapList) {
|
|
|
+ if(mapList == null || mapList.isEmpty()){
|
|
|
+ return null;
|
|
|
+ }
|
|
|
+ List<T> objectList = new ArrayList<T>();
|
|
|
+
|
|
|
+ T object = null;
|
|
|
+ for(Map map : mapList){
|
|
|
+ if(map != null){
|
|
|
+ object = map2Java(javaBean, map);
|
|
|
+ objectList.add(object);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return objectList;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Map对象转化成 JavaBean对象
|
|
|
+ *
|
|
|
+ * @param javaBean JavaBean实例对象
|
|
|
+ * @param map Map对象
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ @SuppressWarnings({ "rawtypes","unchecked"})
|
|
|
+ public static <T> T map2Java(T javaBean, Map map) {
|
|
|
+ try {
|
|
|
+ // 获取javaBean属性
|
|
|
+ BeanInfo beanInfo = Introspector.getBeanInfo(javaBean.getClass());
|
|
|
+ // 创建 JavaBean 对象
|
|
|
+ Object obj = javaBean.getClass().newInstance();
|
|
|
+
|
|
|
+ PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();
|
|
|
+ if (propertyDescriptors != null && propertyDescriptors.length > 0) {
|
|
|
+ String propertyName = null; // javaBean属性名
|
|
|
+ Object propertyValue = null; // javaBean属性值
|
|
|
+ for (PropertyDescriptor pd : propertyDescriptors) {
|
|
|
+ propertyName = pd.getName();
|
|
|
+ if (map.containsKey(propertyName)) {
|
|
|
+ propertyValue = map.get(propertyName);
|
|
|
+ pd.getWriteMethod().invoke(obj, new Object[] { propertyValue });
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return (T) obj;
|
|
|
+ }
|
|
|
+ } catch (Exception e) {
|
|
|
+ e.printStackTrace();
|
|
|
+ }
|
|
|
+
|
|
|
+ return null;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * JavaBean对象转化成Map对象
|
|
|
+ *
|
|
|
+ * @param javaBean
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ @SuppressWarnings({ "rawtypes", "unchecked" })
|
|
|
+ public static Map java2Map(Object javaBean) {
|
|
|
+ Map map = new HashMap();
|
|
|
+
|
|
|
+ try {
|
|
|
+ // 获取javaBean属性
|
|
|
+ BeanInfo beanInfo = Introspector.getBeanInfo(javaBean.getClass());
|
|
|
+
|
|
|
+ PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();
|
|
|
+ if (propertyDescriptors != null && propertyDescriptors.length > 0) {
|
|
|
+ String propertyName = null; // javaBean属性名
|
|
|
+ Object propertyValue = null; // javaBean属性值
|
|
|
+ for (PropertyDescriptor pd : propertyDescriptors) {
|
|
|
+ propertyName = pd.getName();
|
|
|
+ if (!propertyName.equals("class")) {
|
|
|
+ Method readMethod = pd.getReadMethod();
|
|
|
+ propertyValue = readMethod.invoke(javaBean, new Object[0]);
|
|
|
+ map.put(propertyName, propertyValue);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ } catch (Exception e) {
|
|
|
+ e.printStackTrace();
|
|
|
+ }
|
|
|
+
|
|
|
+ return map;
|
|
|
+ }
|
|
|
+
|
|
|
+}
|