【Java工具类】对象与Map相互转换工具类-蒲公英云

【Java工具类】对象与Map相互转换工具类

我就是我 2022-11-17 05:09 307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;
    }
}