Nemo MVC中用到的，先写一下。

/**
 * 类型转换
 * @param value 需要转换的值
 * @param type  需要转换的类型
 * @param <T>
 * @return
 */
@SuppressWarnings("unchecked")
public static <T> T cast(Object value, Class<T> type) {
    if (value != null && !type.isAssignableFrom(value.getClass())) {
        if (is(type, int.class, Integer.class)) {
            value = Integer.parseInt(String.valueOf(value));
        } else if (is(type, long.class, Long.class)) {
            value = Long.parseLong(String.valueOf(value));
        } else if (is(type, float.class, Float.class)) {
            value = Float.parseFloat(String.valueOf(value));
        } else if (is(type, double.class, Double.class)) {
            value = Double.parseDouble(String.valueOf(value));
        } else if (is(type, boolean.class, Boolean.class)) {
            value = Boolean.parseBoolean(String.valueOf(value));
        } else if (is(type, String.class)) {
            value = String.valueOf(value);
        }
    }
    return (T) value;
}