Java编程之Map与Java bean之间的转换工具类

工具代码清单:

MapUtils.java:

import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;

public class MapUtils {
	/**
	 * javaBean 转 Map
	 * 
	 * @param object
	 *            需要转换的javabean
	 * @return 转换结果map
	 * @throws Exception
	 */
	public static Map<String, Object> beanToMap(Object object) throws Exception {
		Map<String, Object> map = new HashMap<String, Object>();
		@SuppressWarnings("rawtypes")
		Class cls = object.getClass();
		Field[] fields = cls.getDeclaredFields();
		for (Field field : fields) {
			field.setAccessible(true);
			map.put(field.getName(), field.get(object));
		}
		return map;
	}

	/**
	 *
	 * @param map
	 *            需要转换的map
	 * @param cls
	 *            目标javaBean的类对象
	 * @return 目标类object
	 * @throws Exception
	 */
	public static Object mapToBean(Map<String, Object> map, @SuppressWarnings("rawtypes") Class cls) throws Exception {
		Object object = cls.newInstance();
		for (String key : map.keySet()) {
			Field temFiels = cls.getDeclaredField(key);
			temFiels.setAccessible(true);
			temFiels.set(object, map.get(key));
		}
		return object;
	}
}

利用了Java语言的反射机制