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invalid stream header: EFBFBDEF问题解决--ISO8859-1

残北 2022-02-04 阅读 117

问题简述:

Java序列化的demo通常都是写到本地文件中的。但是,如果想要在内存中进行序列化,就会遇到异常:java.io.StreamCorruptedException: invalid stream header: EFBFBDEF。

问题代码:

    @Nullable
    public static Object readObject(@NonNull String objectString) {
        final ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(objectString.getBytes());
        ObjectInputStream objectInputStream = null;
        try {
            objectInputStream = new ObjectInputStream(byteArrayInputStream);
            return objectInputStream.readObject();
        } catch (IOException | ClassNotFoundException e) {
            return null;
        } finally {
            if (objectInputStream != null) {
                try {
                    objectInputStream.close();
                } catch (IOException ignore) {
                }
            }
            try {
                byteArrayInputStream.close();
            } catch (IOException ignore) {
            }
        }
    }

    @Nullable
    public static String writeObject(@NonNull Object object) {
        final ByteArrayOutputStream bos = new ByteArrayOutputStream();
        ObjectOutputStream oos = null;
        try {
            oos = new ObjectOutputStream(bos);
            oos.writeObject(object);
            return bos.toString();
        } catch (IOException e) {
            return null;
        } finally {
            if (oos != null) {
                try {
                    oos.close();
                } catch (IOException ignore) {
                }
            }
        }
    }

解决方案:

    @Nullable
    public static Object readObject(@NonNull String objectString) {
        final ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(objectString.getBytes(StandardCharsets.ISO_8859_1));
        ObjectInputStream objectInputStream = null;
        try {
            objectInputStream = new ObjectInputStream(byteArrayInputStream);
            return objectInputStream.readObject();
        } catch (IOException | ClassNotFoundException e) {
            return null;
        } finally {
            if (objectInputStream != null) {
                try {
                    objectInputStream.close();
                } catch (IOException ignore) {
                }
            }
            try {
                byteArrayInputStream.close();
            } catch (IOException ignore) {
            }
        }
    }

    @Nullable
    public static String writeObject(@NonNull Object object) {
        final ByteArrayOutputStream bos = new ByteArrayOutputStream();
        ObjectOutputStream oos = null;
        try {
            oos = new ObjectOutputStream(bos);
            oos.writeObject(object);
            return bos.toString(StandardCharsets.ISO_8859_1.name());
        } catch (IOException e) {
            return null;
        } finally {
            if (oos != null) {
                try {
                    oos.close();
                } catch (IOException ignore) {
                }
            }
        }
    }

方案简述:

遇到这个问题时,我网上搜索了一下,主要分为两种解决方案。
方案一:多进行一次转换,可见博客:Java字节数组序列化读取时异常的有效解决方案 java.io.StreamCorruptedException: invalid stream header: EFBFBDEF
方案二:使用base64。方案一博客中的评论有写。
本方案最大的好处就是代码简单,效率最高。需要注意的是StandardCharsets.ISO_8859_1是Java 1.7才支持的。如果是Java 1.7以下,Java 1.4以上,可用Charset.forName("ISO-8859-1")替换之。Java 1.4以下就不考虑。

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