【Java工具类】对象与Map相互转换工具类

我就是我 2022-11-17 05:09 241阅读 0赞

import java.lang.reflect.Field;
    import java.lang.reflect.Modifier;
    import java.util.LinkedHashMap;
    import java.util.Map;
    public class ObjectUtils { 
    
    
        /** * Object转Map * * @param obj * @return * @throws IllegalAccessException */
        public static Map<String, Object> objectToMap(Object obj) throws IllegalAccessException { 
            Map<String, Object> map = new LinkedHashMap<String, Object>();
            Class<?> clazz = obj.getClass();
    
            for (Field field : clazz.getDeclaredFields()) { 
                field.setAccessible(true);
                String fieldName = field.getName();
                Object value = field.get(obj);
                if (value == null) { 
                    value = "";
                }
                map.put(fieldName, value);
            }
            return map;
        }
    
        //
    
        /** * Map转Object * * @param map * @param beanClass * @return * @throws Exception */
        public static Object mapToObject(Map<Object, Object> map, Class<?> beanClass) throws Exception { 
            if (map == null)
                return null;
            Object obj = beanClass.newInstance();
            Field[] fields = obj.getClass().getDeclaredFields();
            for (Field field : fields) { 
                int mod = field.getModifiers();
                if (Modifier.isStatic(mod) || Modifier.isFinal(mod)) { 
                    continue;
                }
                field.setAccessible(true);
                if (map.containsKey(field.getName())) { 
                    field.set(obj, map.get(field.getName()));
                }
            }
            return obj;
        }
    }