已經知道物件的型別，以及屬性對應的值，且值儲存在map物件中，將該map轉換為已知型別的物件。

	/**
	 * 將Map物件通過反射機制轉換成Bean物件
	 * 
	 * @param map存放資料的map物件
	 * @param clazz待轉換的class
	 * @return 轉換後的Bean物件
	 * @throws Exception異常
	 */
	public static Object mapToBean(Map<String, Object> map, Class<?> clazz) throws Exception {
		Object object = clazz.newInstance();
		if (map != null && map.size() > 0) {
			for (Map.Entry<String, Object> entry : map.entrySet()) {
				String propertyName = entry.getKey(); // 屬性名
				Object value = entry.getValue();
				String setMethodName = "set" + propertyName.substring(0, 1).toUpperCase() + propertyName.substring(1);
				Field field = getClassField(clazz, propertyName);
				if (field == null)
					continue;
				Class<?> fieldTypeClass = field.getType();
				value = convertValType(value, fieldTypeClass);
				try {
					clazz.getMethod(setMethodName, field.getType()).invoke(object, value);
				} catch (NoSuchMethodException e) {
					e.printStackTrace();
				}
			}
		}
		return object;
	}

	/**
	 * 獲取指定欄位名稱查詢在class中的對應的Field物件(包括查詢父類)
	 * 
	 * @param clazz指定的class
	 * @param fieldName欄位名稱
	 * @return Field物件
	 */
	private static Field getClassField(Class<?> clazz, String fieldName) {
		if (Object.class.getName().equals(clazz.getName())) {
			return null;
		}
		Field[] declaredFields = clazz.getDeclaredFields();
		for (Field field : declaredFields) {
			if (field.getName().equals(fieldName)) {
				return field;
			}
		}

		Class<?> superClass = clazz.getSuperclass();
		if (superClass != null) {// 簡單的遞迴一下
			return getClassField(superClass, fieldName);
		}
		return null;
	}

	/**
	 * 將Object型別的值，轉換成bean物件屬性裡對應的型別值
	 * 
	 * @param value,Object物件值
	 * @param fieldTypeClass屬性的型別
	 * @return 轉換後的值
	 */
	private static Object convertValType(Object value, Class<?> fieldTypeClass) {
		Object retVal = null;
		if (Long.class.getName().equals(fieldTypeClass.getName())
				|| long.class.getName().equals(fieldTypeClass.getName())) {
			retVal = Long.parseLong(value.toString());
		} else if (Integer.class.getName().equals(fieldTypeClass.getName())
				|| int.class.getName().equals(fieldTypeClass.getName())) {
			retVal = Integer.parseInt(value.toString());
		} else if (Float.class.getName().equals(fieldTypeClass.getName())
				|| float.class.getName().equals(fieldTypeClass.getName())) {
			retVal = Float.parseFloat(value.toString());
		} else if (Double.class.getName().equals(fieldTypeClass.getName())
				|| double.class.getName().equals(fieldTypeClass.getName())) {
			retVal = Double.parseDouble(value.toString());
		} else {
			retVal = value;
		}
		return retVal;
	}
 

public class Student {
	private String name;
	private Integer age;
	private String hobbies;

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public Integer getAge() {
		return age;
	}

	public void setAge(Integer age) {
		this.age = age;
	}

	public String getHobbies() {
		return hobbies;
	}

	public void setHobbies(String hobbies) {
		this.hobbies = hobbies;
	}
 

Test

	Map<String, Object> map = new HashMap<String, Object>();
		map.put("name", "scofield");
		map.put("age", 20);
		map.put("hobbies", "music、riding");

		try {
			Student student = (Student) Util.mapToBean(map, Student.class);
			System.out.println(student.getName());
			System.out.println(student.getAge());
			System.out.println(student.getHobbies());
		} catch (Exception e) {
			e.printStackTrace();
		}