java - 序列化:将对象作为 URL 参数传递并提取值

Question

我想通过 URL 参数传递对象，通过序列化将其转换为字符串，然后通过反序列化取回对象。

这是我所做的:

在 URL 参数创建期间:

SerializationUtils.getAsString(localMarketHomeDTO.getPointInTime()); //serializing it

在提取值期间:

SerializationUtils.getAsObject(paramValue.toString(),Class.forName("java.util.Date")); //deserializing it

此处 localMarketHomeDTO.getPointInTime() 的类型为 java.util.Date。

类SerializationUtils是:

public class SerializationUtils{

    private SerializationUtils(){

    }

    public static <T extends Serializable> String getAsString(T object) throws Exception {
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        ObjectOutputStream objectOutputStream = new ObjectOutputStream(byteArrayOutputStream);
        objectOutputStream.writeObject(object);
        objectOutputStream.flush();
        return byteArrayOutputStream.toString("UTF-8");
    }

    public static <T> T getAsObject(String string, Class<T> clazz) throws Exception {
        byte[] byteArray = string.getBytes("UTF-8");
        ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(byteArray);
        ObjectInputStream objectInputStream = new ObjectInputStream(byteArrayInputStream);
        T object = clazz.cast(objectInputStream.readObject());
        return object;
    }
}

但我有异常(exception):

'java.util.Date; local class incompatible: stream classdesc serialVersionUID = 7523895402267505689, local class serialVersionUID = 7523967970034938905' due to 'java.io.InvalidClassException: java.util.Date; local class incompatible: stream classdesc serialVersionUID = 7523895402267505689, local class serialVersionUID = 7523967970034938905'

如何解决这个问题？

Answer 1

使用base64将字节数组转换为字符串:java.util.Base64.getEncoder().encodeToString(byte[] src)java.util.Base64.getDecoder().decode(String src)