[BUG]byte[]无法正确反序列化 com.alibaba.fastjson2.JSONException: offset 106, character },

[lorna1]

问题描述

Caused by: com.alibaba.fastjson2.JSONException: offset 106, character }, line 6, column 3, fastjson-version 2.0.26
{
"success" : true,
"code" : "",
"message" : "",
"data" : "H4sIAAAAAAAAAIvOK83JiQUAs/s3MAYAAAA="
}
at com.alibaba.fastjson2.reader.ObjectReaderImplGenericArray.readObject(ObjectReaderImplGenericArray.java:94) ~[fastjson2-2.0.26.jar:?]
at com.alibaba.fastjson2.reader.ORG_1_4_DynamicDataResponse.readObject(Unknown Source) ~[?:?]
at com.alibaba.fastjson.JSON.parseObject(JSON.java:508) ~[fastjson-2.0.26.jar:?]

环境信息

请填写以下信息：

• OS信息： [e.g.：MAC OS 13.2 ]
• JDK信息： [e.g.：jdk 1.8.0_212]
• 版本信息：[e.g.：Fastjson2 2.0.26]

重现步骤

类：
DataResponse extends ResponseDTO<byte[]>
ResponseDTO implements Serializable {
private static final long serialVersionUID = -3007330743907543218L;
private boolean success;
private String code;
private String message;
private T data;
}

JSON.parseObject(result, DataResponse.class);

期待的正确结果

正确序列化

相关日志输出

Caused by: com.alibaba.fastjson2.JSONException: offset 106, character }, line 6, column 3, fastjson-version 2.0.26
{
"success" : true,
"code" : "",
"message" : "",
"data" : "H4sIAAAAAAAAAIvOK83JiQUAs/s3MAYAAAA="
}
at com.alibaba.fastjson2.reader.ObjectReaderImplGenericArray.readObject(ObjectReaderImplGenericArray.java:94) ~[fastjson2-2.0.26.jar:?]
at com.alibaba.fastjson2.reader.ORG_1_4_DynamicDataResponse.readObject(Unknown Source) ~[?:?]
at com.alibaba.fastjson.JSON.parseObject(JSON.java:508) ~[fastjson-2.0.26.jar:?]

附加信息

无

[wenshao]

要加上Base64StringAsByteArray，比如：

JSON.parseObject("..", Bean.class, JSONReader.Feature.Base64StringAsByteArray);

[Alex-hu]

如果基类是泛型，子类定义具体类型，在反序列化时，问题就重现了。 @wenshao

private static class Model<T> {
        public T value;
    }

    private static class Model2
            extends Model<byte[]> {
    }

    @Test
    public void test_01() throws Exception {
        Model2 model = new Model2();

        model.value = "ABCDEG".getBytes();

        String json = JSON.toJSONString(model, JSONWriter.Feature.WriteByteArrayAsBase64);

        assertEquals("{\"value\":\"QUJDREVH\"}", json);

        Model2 model1 = JSON.parseObject(json, Model2.class, JSONReader.Feature.Base64StringAsByteArray);
        assertArrayEquals(model.value, model1.value);
    }

错误日志：

com.alibaba.fastjson2.JSONException: offset 20, character }, line 1, column 21, fastjson-version 2.0.25 {"value":"QUJDREVH"}

	at com.alibaba.fastjson2.reader.ObjectReaderImplGenericArray.readObject(ObjectReaderImplGenericArray.java:94)
	at com.alibaba.fastjson2.reader.ORG_1_1_Model3.readObject(Unknown Source)
	at com.alibaba.fastjson2.JSON.parseObject(JSON.java:848)
。。。

[wenshao]

https://oss.sonatype.org/content/repositories/snapshots/com/alibaba/fastjson2/fastjson2/2.0.27-SNAPSHOT/

@Alex-hu 问题已修复，请帮忙用2.0.27-SNAPSHOT版本验证

[wenshao]

https://github.com/alibaba/fastjson2/releases/tag/2.0.27
问题已修复，请用新版本