fastjson2 怎么统一指定timestamp 转换格式

[Johnson-Jia]

问题描述

jdk 8
Dubbo

目前 A 系统使用的 java.util.Date 对象接收数据库里面的数据，拿到后发现是 java.sql.Timestamp
B 系统接口的入参为 java.util.Date ，当A 系统调用 B 系统的时候 出现无法转换问题。

Dubbo 中使用 fastjson2 能否统一 兼容支持 Timestamp 转 Date ？

[Johnson-Jia]

例如：

  Timestamp timestamp = new Timestamp(new Date().getTime());
        byte[] bytes = JSONB.toBytes(timestamp, JSONWriter.Feature.WriteClassName, JSONWriter.Feature.FieldBased,
            JSONWriter.Feature.ErrorOnNoneSerializable, JSONWriter.Feature.ReferenceDetection,
            JSONWriter.Feature.WriteNulls, JSONWriter.Feature.NotWriteDefaultValue,
            JSONWriter.Feature.NotWriteHashMapArrayListClassName, JSONWriter.Feature.WriteNameAsSymbol);

        Date result = JSONB.parseObject(bytes, Date.class, JSONReader.Feature.UseDefaultConstructorAsPossible,
            JSONReader.Feature.ErrorOnNoneSerializable, JSONReader.Feature.IgnoreAutoTypeNotMatch,
            JSONReader.Feature.UseNativeObject, JSONReader.Feature.FieldBased);
        System.out.println(result);

Exception in thread "main" java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.rt.execution.CommandLineWrapper.main(CommandLineWrapper.java:64)
Caused by: java.lang.UnsupportedOperationException
at com.alibaba.fastjson2.JSONReaderJSONB.getStringLength(JSONReaderJSONB.java:5159)
at com.alibaba.fastjson2.JSONReader.readMillisFromString(JSONReader.java:1628)
at com.alibaba.fastjson2.reader.ObjectReaderImplDate.readDate(ObjectReaderImplDate.java:175)
at com.alibaba.fastjson2.reader.ObjectReaderImplDate.readJSONBObject(ObjectReaderImplDate.java:54)
at com.alibaba.fastjson2.JSONB.parseObject(JSONB.java:748)

[wenshao]

https://oss.sonatype.org/content/repositories/snapshots/com/alibaba/fastjson2/fastjson2/2.0.49-SNAPSHOT/
问题已经修复，请帮忙用2.0.49-SNAPSHOT版本验证，2.0.49版本预计在4月底发布

[Johnson-Jia]

此问题本地验证已通过。

[wenshao]

https://github.com/alibaba/fastjson2/releases/tag/2.0.49
请用新版本