[BUG] Date 类型处理异常

[JiakunXu]

问题描述

对象中包含 Date 类型的属性，通过 @JSONField 指定格式化，当 Date 类型的属性值为 ""，parseObject 会报错；当 Date 类型的属性为 null，parseObject 正常

Fastjson 1.2.83 没有这个问题

环境信息

• 版本信息：[Fastjson2 2.0.7]

重现步骤

1. 使用 JSON.parseObject 方法
2. 输入 {"date":""} 数据
3. 出现 Text '' could not be parsed at index 0 错误

    @JSONField(format = "yyyy-MM-dd")
    private Date              date;

相关日志输出

Exception in thread "main" java.time.format.DateTimeParseException: Text '' could not be parsed at index 0
	at java.time.format.DateTimeFormatter.parseResolved0(DateTimeFormatter.java:1949)
	at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1851)
	at java.time.LocalDate.parse(LocalDate.java:400)
	at com.alibaba.fastjson2.reader.ObjectReaderImplDate.readDate(ObjectReaderImplDate.java:105)
	at com.alibaba.fastjson2.reader.ObjectReaderImplDate.readObject(ObjectReaderImplDate.java:71)
	at com.alibaba.fastjson2.reader.ObjectReader_1.readObject(Unknown Source)
	at com.alibaba.fastjson2.JSON.parseObject(JSON.java:421)

[wenshao]

https://oss.sonatype.org/content/repositories/snapshots/com/alibaba/fastjson2/fastjson2/2.0.8-SNAPSHOT/
问题已经修复，请用2.0.8-SNAPSHOT验证

[wenshao]

https://github.com/alibaba/fastjson2/releases/tag/2.0.8
问题已经修复，请用新版本