Seata json decode exception, Cannot construct instance of `java.time.LocalDateTime` 报错原因/解决方案最全汇总版

文章目录

  • 一、报错详情
    • 1、环境信息
    • 2、Seata undo_log日志表结构
    • 3、详细异常信息
  • 二、原因分析
  • 三、解决方案
    • 方案1、降低mysql-connector-java版本
    • 方案2、更换Seata的undo_log序列化方式
      • 1)Seata undo配置类
      • 2)自定义Seata undo_log序列化
    • 方案3、将数据库字段类型从datetime修改为timestamp
    • 方案4、使Jackson可以解析`java.time.LocalDateTime`类型

一、报错详情

1、环境信息

  • Spring Boot : 2.4.2
  • Spring Cloud:2020.0.1
  • Spring Cloud Alibaba:2021.1
  • Seata:1.3.0
  • mysql-connector-java:8.0.28
    和报错相关的是Seata 和 mysql-connector-java的版本信息

2、Seata undo_log日志表结构

Seata json decode exception, Cannot construct instance of `java.time.LocalDateTime` 报错原因/解决方案最全汇总版_第1张图片

其中 log_created、log_modified字段的类型是datetime。

3、详细异常信息

在分布式全局事务执行失败进行全局回滚时,需要通过Seata 的 undoLog回滚的服务会出现报错信息,如下:

2022-08-05 18:04:03.583 ERROR 16225 --- [h_RMROLE_1_8_16] i.s.r.d.u.parser.JacksonUndoLogParser    : json decode exception, Cannot construct instance of `java.time.LocalDateTime` (no Creators, like default constructor, exist): cannot deserialize from Object value (no delegate- or property-based Creator)
 at [Source: (byte[])"{"@class":"io.seata.rm.datasource.undo.BranchUndoLog","xid":"192.168.1.5:8091:298880381343518720","branchId":298880382744416257,"sqlUndoLogs":["java.util.ArrayList",[{"@class":"io.seata.rm.datasource.undo.SQLUndoLog","sqlType":"UPDATE","tableName":"stock_tbl","beforeImage":{"@class":"io.seata.rm.datasource.sql.struct.TableRecords","tableName":"stock_tbl","rows":["java.util.ArrayList",[{"@class":"io.seata.rm.datasource.sql.struct.Row","fields":["java.util.ArrayList",[{"@class":"io.seata.rm.dataso"[truncated 12232 bytes]; line: 1, column: 3987] (through reference chain: io.seata.rm.datasource.undo.BranchUndoLog["sqlUndoLogs"]->java.util.ArrayList[1]->io.seata.rm.datasource.undo.SQLUndoLog["afterImage"]->io.seata.rm.datasource.sql.struct.TableRecords["rows"]->java.util.ArrayList[0]->io.seata.rm.datasource.sql.struct.Row["fields"]->java.util.ArrayList[6]->io.seata.rm.datasource.sql.struct.Field["value"])

com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `java.time.LocalDateTime` (no Creators, like default constructor, exist): cannot deserialize from Object value (no delegate- or property-based Creator)
 at [Source: (byte[])"{"@class":"io.seata.rm.datasource.undo.BranchUndoLog","xid":"192.168.1.5:8091:298880381343518720","branchId":298880382744416257,"sqlUndoLogs":["java.util.ArrayList",[{"@class":"io.seata.rm.datasource.undo.SQLUndoLog","sqlType":"UPDATE","tableName":"stock_tbl","beforeImage":{"@class":"io.seata.rm.datasource.sql.struct.TableRecords","tableName":"stock_tbl","rows":["java.util.ArrayList",[{"@class":"io.seata.rm.datasource.sql.struct.Row","fields":["java.util.ArrayList",[{"@class":"io.seata.rm.dataso"[truncated 12232 bytes]; line: 1, column: 3987] (through reference chain: io.seata.rm.datasource.undo.BranchUndoLog["sqlUndoLogs"]->java.util.ArrayList[1]->io.seata.rm.datasource.undo.SQLUndoLog["afterImage"]->io.seata.rm.datasource.sql.struct.TableRecords["rows"]->java.util.ArrayList[0]->io.seata.rm.datasource.sql.struct.Row["fields"]->java.util.ArrayList[6]->io.seata.rm.datasource.sql.struct.Field["value"])
	at com.fasterxml.jackson.databind.exc.InvalidDefinitionException.from(InvalidDefinitionException.java:67) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.DeserializationContext.reportBadDefinition(DeserializationContext.java:1615) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.DatabindContext.reportBadDefinition(DatabindContext.java:400) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.DeserializationContext.handleMissingInstantiator(DeserializationContext.java:1077) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromObjectUsingNonDefault(BeanDeserializerBase.java:1332) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:331) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeOther(BeanDeserializer.java:199) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:166) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer._deserializeTypedForId(AsPropertyTypeDeserializer.java:132) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer.deserializeTypedFromObject(AsPropertyTypeDeserializer.java:99) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer.deserializeTypedFromAny(AsPropertyTypeDeserializer.java:195) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.std.UntypedObjectDeserializer$Vanilla.deserializeWithType(UntypedObjectDeserializer.java:710) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:138) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:293) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeOther(BeanDeserializer.java:194) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:166) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer._deserializeTypedForId(AsPropertyTypeDeserializer.java:132) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer.deserializeTypedFromObject(AsPropertyTypeDeserializer.java:99) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeWithType(BeanDeserializerBase.java:1209) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:292) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:249) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:26) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer._deserialize(AsArrayTypeDeserializer.java:120) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer.deserializeTypedFromArray(AsArrayTypeDeserializer.java:53) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserializeWithType(CollectionDeserializer.java:318) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:138) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:293) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeOther(BeanDeserializer.java:194) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:166) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer._deserializeTypedForId(AsPropertyTypeDeserializer.java:132) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer.deserializeTypedFromObject(AsPropertyTypeDeserializer.java:99) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeWithType(BeanDeserializerBase.java:1209) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:292) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:249) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:26) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer._deserialize(AsArrayTypeDeserializer.java:120) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer.deserializeTypedFromArray(AsArrayTypeDeserializer.java:53) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserializeWithType(CollectionDeserializer.java:318) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:138) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:293) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeOther(BeanDeserializer.java:194) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:166) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer._deserializeTypedForId(AsPropertyTypeDeserializer.java:132) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer.deserializeTypedFromObject(AsPropertyTypeDeserializer.java:99) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeWithType(BeanDeserializerBase.java:1209) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:138) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:293) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeOther(BeanDeserializer.java:194) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:166) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer._deserializeTypedForId(AsPropertyTypeDeserializer.java:132) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer.deserializeTypedFromObject(AsPropertyTypeDeserializer.java:99) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeWithType(BeanDeserializerBase.java:1209) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:292) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:249) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:26) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer._deserialize(AsArrayTypeDeserializer.java:120) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer.deserializeTypedFromArray(AsArrayTypeDeserializer.java:53) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserializeWithType(CollectionDeserializer.java:318) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:138) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:293) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeOther(BeanDeserializer.java:194) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:166) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer._deserializeTypedForId(AsPropertyTypeDeserializer.java:132) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer.deserializeTypedFromObject(AsPropertyTypeDeserializer.java:99) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeWithType(BeanDeserializerBase.java:1209) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.deser.impl.TypeWrappedDeserializer.deserialize(TypeWrappedDeserializer.java:68) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4526) ~[jackson-databind-2.11.4.jar:2.11.4]
	at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3529) ~[jackson-databind-2.11.4.jar:2.11.4]
	at io.seata.rm.datasource.undo.parser.JacksonUndoLogParser.decode(JacksonUndoLogParser.java:139) ~[seata-all-1.3.0.jar:1.3.0]
	at io.seata.rm.datasource.undo.AbstractUndoLogManager.undo(AbstractUndoLogManager.java:276) [seata-all-1.3.0.jar:1.3.0]
	at io.seata.rm.datasource.DataSourceManager.branchRollback(DataSourceManager.java:178) [seata-all-1.3.0.jar:1.3.0]
	at io.seata.rm.AbstractRMHandler.doBranchRollback(AbstractRMHandler.java:125) [seata-all-1.3.0.jar:1.3.0]
	at io.seata.rm.AbstractRMHandler$2.execute(AbstractRMHandler.java:67) [seata-all-1.3.0.jar:1.3.0]
	at io.seata.rm.AbstractRMHandler$2.execute(AbstractRMHandler.java:63) [seata-all-1.3.0.jar:1.3.0]
	at io.seata.core.exception.AbstractExceptionHandler.exceptionHandleTemplate(AbstractExceptionHandler.java:116) [seata-all-1.3.0.jar:1.3.0]
	at io.seata.rm.AbstractRMHandler.handle(AbstractRMHandler.java:63) [seata-all-1.3.0.jar:1.3.0]
	at io.seata.rm.DefaultRMHandler.handle(DefaultRMHandler.java:63) [seata-all-1.3.0.jar:1.3.0]
	at io.seata.core.protocol.transaction.BranchRollbackRequest.handle(BranchRollbackRequest.java:35) [seata-all-1.3.0.jar:1.3.0]
	at io.seata.rm.AbstractRMHandler.onRequest(AbstractRMHandler.java:150) [seata-all-1.3.0.jar:1.3.0]
	at io.seata.core.rpc.processor.client.RmBranchRollbackProcessor.handleBranchRollback(RmBranchRollbackProcessor.java:63) [seata-all-1.3.0.jar:1.3.0]
	at io.seata.core.rpc.processor.client.RmBranchRollbackProcessor.process(RmBranchRollbackProcessor.java:58) [seata-all-1.3.0.jar:1.3.0]
	at io.seata.core.rpc.netty.AbstractNettyRemoting.lambda$processMessage$2(AbstractNettyRemoting.java:265) [seata-all-1.3.0.jar:1.3.0]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_275]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[na:1.8.0_275]
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-all-4.1.58.Final.jar:4.1.58.Final]
	at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_275]

二、原因分析

全局事务进行回滚时,会去查询undo_log 表中的回滚信息,回滚信息中记录了当前数据操作前后的镜像。

Seata json decode exception, Cannot construct instance of `java.time.LocalDateTime` 报错原因/解决方案最全汇总版_第2张图片

Seata 默认采用的序列化方式是 jackson,报错信息显示jackson 反序列化失败,我们定位到JacksonUndoLogParser类的decode()方法:

Seata json decode exception, Cannot construct instance of `java.time.LocalDateTime` 报错原因/解决方案最全汇总版_第3张图片

在数据库中,undio_log的时间字段 log_createdlog_modified设置的是datetime 类型;

在这里插入图片描述

Seata 会自己去查询数据库字段的属性、值并缓存,在插入回滚信息时,将数据库的datetime 被解析为java.time.LocalDateTime。而Seata 在使用Jackson 序列化器时,没有对java.time.LocalDateTime类型序列化进行配置,导致报错。

三、解决方案

方案1、降低mysql-connector-java版本

调整mysql-connector-java版本 <= 8.0.22;

<dependency>
    <groupId>mysqlgroupId>
    <artifactId>mysql-connector-javaartifactId>
    <version>8.0.22version>
dependency>

在该版本下,数据库的datetime 被解析为java.sql.Timestamp,因此也就不存在java.time.LocalDateTime无法反序列化的问题了。

这种方案最简单、快速,推荐;

方案2、更换Seata的undo_log序列化方式

seata支持以下几种序列化方式:

  • FastjsonUndoLogParser:Fastjson序列化工具
  • FstUndoLogParser:Fst序列化工具(seata 1.4.x版本开始支持
  • JacksonUndoLogParser:Jackson序列化工具
  • KryoUndoLogParser:Kryo序列化工具
  • ProtostuffUndoLogParser:Protostuff序列化工具

Seata json decode exception, Cannot construct instance of `java.time.LocalDateTime` 报错原因/解决方案最全汇总版_第4张图片

有些序列化方式是不行的,实测结果如下:

  • 仅有ProtostuffKryoFst三种序列化方式是可行的;
  • FastjsonJackson均不支持;

此外,seata 1.5.x版本修复了 FastjsonUndoLogParser 中 LocalDataTime 类型无法回滚的问题,也就是说seata 1.5.x版本Fastjson序列化方式也是可行的。

1)Seata undo配置类

UndoProperties中包含四个配置项:

  • dataValidatioin:表示二阶段回滚镜像数据时是否进行校验,默认true开启;
  • logSerialization:undo序列化方法,默认是jackson;
  • logTable:undo表名,默认为undo_log
  • onlyCareUpdateColumns:是否只检验SQL更新的字段,默认true开启;
    Seata json decode exception, Cannot construct instance of `java.time.LocalDateTime` 报错原因/解决方案最全汇总版_第5张图片

相关常量:

public static final String SEATA_PREFIX = "seata";
public static final String CLIENT_PREFIX = SEATA_PREFIX + ".client";
public static final String UNDO_PREFIX = CLIENT_PREFIX + ".undo";

public static final boolean DEFAULT_TRANSACTION_UNDO_DATA_VALIDATION = true;
// 默认采用jsckson序列化协议
public static final String DEFAULT_TRANSACTION_UNDO_LOG_SERIALIZATION = "jackson";
public static final String DEFAULT_TRANSACTION_UNDO_LOG_TABLE = "undo_log";
public static final boolean DEFAULT_ONLY_CARE_UPDATE_COLUMNS = true;

2)自定义Seata undo_log序列化

修改log-serialization配置即可,默认使用的是jackson;如果需要修改为其他的,则需要在pom.xml中引入相关的序列化包依赖;一般不建议修改序列化方式,因为jackson是Sring Boot已集成的,无需再添加第三方包。

protostuff序列化为例;

1> application.yml文件:

seata:
  client:
    undo:
      # 指定undo的序列化协议为protostuff
      log-serialization: protostuff

如果seata使用的是file配置方式,也可以选择直接在file.conf中修改:

client {
  undo {
    dataValidation = true
    logSerialization = "protostuff"
    logTable = "undo_log"
  }
}

2> pom.xml中引入protostuff相关依赖包:

<dependency>
    <groupId>io.protostuffgroupId>
    <artifactId>protostuff-runtimeartifactId>
    <version>1.8.0version>
dependency>
<dependency>
    <groupId>io.protostuffgroupId>
    <artifactId>protostuff-coreartifactId>
    <version>1.8.0version>
dependency>

方案3、将数据库字段类型从datetime修改为timestamp

这种方式不推荐,尤其是对于正常业务表,如果业务已经上线,再修改数据类型就很难搞。

方案4、使Jackson可以解析java.time.LocalDateTime类型

从seata 1.4.2版本开始 ;JacksonUndoLogParser源码中增加了对LocalDateTime类的序列化和反序列化处理;
Seata json decode exception, Cannot construct instance of `java.time.LocalDateTime` 报错原因/解决方案最全汇总版_第6张图片
从代码逻辑来看,我们需要一个实现JacksonSerializer的类,其中负责处理LocalDateTime类型,具体操作步骤如下:

1> 自定义支持可以解析java.time.OffsetDateTime类型的解析类;例如:

public class JsonDateTimeSerializer implements JacksonSerializer<LocalDateTime> {
 
    private static final DateTimeFormatter DATETIME_FORMAT = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
 
    @Override
    public Class<LocalDateTime> type() {
        return LocalDateTime.class;
    }
 
    @Override
    public JsonSerializer<LocalDateTime> ser() {
        return new LocalDateTimeSerializer(DATETIME_FORMAT);
    }
 
    @Override
    public JsonDeserializer<? extends LocalDateTime> deser() {
        return new LocalDateTimeDeserializer(DATETIME_FORMAT);
    }
}

2>在 META-INF/services 目录中定义名称为io.seata.rm.datasource.undo.UndoLogParser的文件,内容为JacksonSerializer实现类的全路径名;

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