Java 对象转化

Java 对象转化为Map

方式1：借助FastJson把对象转化为Map

/**
     * 
     * @MethodName: getUserInfoDataByUserId
     * @Description: 根据useId查询用户信息，封装成map  key：属性名，value：属性值
     * home.php?mod=space&uid=952169 userId 用户userId
     * @return
     */
    public Map<String, String> getUserInfoDataByUserId(String userId) {
        Map<String, String> userMap = new HashMap<String, String>();
        BSysUser bSysUser = new BSysUser();
        if (StringUtils.isNoneBlank(userId)) {
            bSysUser = bSysUserService.selectByKey(userId);
            if (null != bSysUser) {
                //userMap = new BeanMap(bSysUser);
                userMap = JSON.parseObject(JSON.toJSONString(bSysUser), new TypeReference<Map<String, String>>() {
                });
            }
        }
        return userMap;
    }

方式2：利用反射进行转换

public class BeanMapUtilByReflect {

    /**
     * 对象转Map
     * @param object
     * @return
     * @throws IllegalAccessException
     */
    public static Map beanToMap(Object object) throws IllegalAccessException {
        Map<String, Object> map = new HashMap<String, Object>();
        Field[] fields = object.getClass().getDeclaredFields();
        for (Field field : fields) {
            field.setAccessible(true);
            map.put(field.getName(), field.get(object));
        }
        return map;
    }

    /**
     * map转对象
     * @param map
     * @param beanClass
     * @param <T>
     * @return
     * @throws Exception
     */
    public static <T> T mapToBean(Map map, Class<T> beanClass) throws Exception {
        T object = beanClass.newInstance();
        Field[] fields = object.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(object, map.get(field.getName()));
            }
        }
        return object;
    }
}