Java Map和Bean之前的轉換

標籤：map

// Map --> Bean 2: 利用org.apache.commons.beanutils 工具類實現 Map --> Bean      public static void transMap2Bean2(Map<String, Object> map, Object obj) {          if (map == null || obj == null) {              return;          }          try {              BeanUtils.populate(obj, map);          } catch (Exception e) {              System.out.println("transMap2Bean2 Error " + e);          }      }        // Map --> Bean 1: 利用Introspector,PropertyDescriptor實現 Map --> Bean      public static void transMap2Bean(Map<String, Object> map, Object obj) {            try {              BeanInfo beanInfo = Introspector.getBeanInfo(obj.getClass());              PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();                for (PropertyDescriptor property : propertyDescriptors) {                  String key = property.getName();                    if (map.containsKey(key)) {                      Object value = map.get(key);                      // 得到property對應的setter方法                      Method setter = property.getWriteMethod();                      setter.invoke(obj, value);                  }                }            } catch (Exception e) {              System.out.println("transMap2Bean Error " + e);          }            return;        }        // Bean --> Map 1: 利用Introspector和PropertyDescriptor 將Bean --> Map      public static Map<String, Object> transBean2Map(Object obj) {            if(obj == null){              return null;          }                  Map<String, Object> map = new HashMap<String, Object>();          try {              BeanInfo beanInfo = Introspector.getBeanInfo(obj.getClass());              PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();              for (PropertyDescriptor property : propertyDescriptors) {                  String key = property.getName();                    // 過濾class屬性                  if (!key.equals("class")) {                      // 得到property對應的getter方法                      Method getter = property.getReadMethod();                      Object value = getter.invoke(obj);                        map.put(key, value);                  }                }          } catch (Exception e) {              System.out.println("transBean2Map Error " + e);          }            return map;        }

本文出自 “阿凡達” 部落格，請務必保留此出處http://shamrock.blog.51cto.com/2079212/1686654

Java Map和Bean之前的轉換