seata序列化日期类型出错
一、背景
最近在整合seata的过程中，发现如果业务表中存在 datetime 的数据类型，那么在分布式事务中，修改这个字段的值时，会出现如下错误。此处提供2种解决方案。
com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Type id handling not implemented for type java.lang.Object (by serializer of type com.fasterxml.jackson.databind.ser.impl.UnsupportedTypeSerializer) (through reference chain: io.seata.rm.datasource.undo.BranchUndoLog["sqlUndoLogs"]->java.util.ArrayList[0]->io.seata.rm.datasource.undo.SQLUndoLog["beforeImage"]->io.seata.rm.datasource.sql.struct.TableRecords["rows"]->java.util.ArrayList[0]->io.seata.rm.datasource.sql.struct.Row["fields"]->java.util.ArrayList[2]->io.seata.rm.datasource.sql.struct.Field["value"])
at com.fasterxml.jackson.databind.exc.InvalidDefinitionException.from(InvalidDefinitionException.java:77) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.SerializerProvider.reportBadDefinition(SerializerProvider.java:1276) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.DatabindContext.reportBadDefinition(DatabindContext.java:400) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.JsonSerializer.serializeWithType(JsonSerializer.java:160) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:730) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:770) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeWithType(BeanSerializerBase.java:655) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.std.CollectionSerializer.serializeContents(CollectionSerializer.java:147) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.std.CollectionSerializer.serializeContents(CollectionSerializer.java:25) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.std.AsArraySerializerBase.serializeWithType(AsArraySerializerBase.java:267) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:730) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:770) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeWithType(BeanSerializerBase.java:655) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.std.CollectionSerializer.serializeContents(CollectionSerializer.java:147) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.std.CollectionSerializer.serializeContents(CollectionSerializer.java:25) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.std.AsArraySerializerBase.serializeWithType(AsArraySerializerBase.java:267) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:730) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:770) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeWithType(BeanSerializerBase.java:655) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:730) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:770) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeWithType(BeanSerializerBase.java:655) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.std.CollectionSerializer.serializeContents(CollectionSerializer.java:147) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.std.CollectionSerializer.serializeContents(CollectionSerializer.java:25) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.std.AsArraySerializerBase.serializeWithType(AsArraySerializerBase.java:267) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:730) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:770) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeWithType(BeanSerializerBase.java:655) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.impl.TypeWrappedSerializer.serialize(TypeWrappedSerializer.java:32) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ObjectMapper._writeValueAndClose(ObjectMapper.java:4487) ~[jackson-databind-2.12.4.jar:2.12.4]
at com.fasterxml.jackson.databind.ObjectMapper.writeValueAsBytes(ObjectMapper.java:3765) ~[jackson-databind-2.12.4.jar:2.12.4]
at io.seata.rm.datasource.undo.parser.JacksonUndoLogParser.encode(JacksonUndoLogParser.java:152) ~[seata-all-1.4.2.jar:1.4.2]
at io.seata.rm.datasource.undo.AbstractUndoLogManager.flushUndoLogs(AbstractUndoLogManager.java:230) ~[seata-all-1.4.2.jar:1.4.2]
at io.seata.rm.datasource.ConnectionProxy.processGlobalTransactionCommit(ConnectionProxy.java:255) ~[seata-all-1.4.2.jar:1.4.2]
at io.seata.rm.datasource.ConnectionProxy.doCommit(ConnectionProxy.java:230) ~[seata-all-1.4.2.jar:1.4.2]
at io.seata.rm.datasource.ConnectionProxy.lambda$commit$0(ConnectionProxy.java:188) ~[seata-all-1.4.2.jar:1.4.2]
at io.seata.rm.datasource.ConnectionProxy$LockRetryPolicy.execute(ConnectionProxy.java:333) ~[seata-all-1.4.2.jar:1.4.2]
at io.seata.rm.datasource.ConnectionProxy.commit(ConnectionProxy.java:187) ~[seata-all-1.4.2.jar:1.4.2]
at org.springframework.jdbc.datasource.DataSourceTransactionManager.doCommit(DataSourceTransactionManager.java:333) ~[spring-jdbc-5.3.9.jar:5.3.9]
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:743) ~[spring-tx-5.3.9.jar:5.3.9]
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:711) ~[spring-tx-5.3.9.jar:5.3.9]
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:654) ~[spring-tx-5.3.9.jar:5.3.9]
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:407) ~[spring-tx-5.3.9.jar:5.3.9]
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) ~[spring-tx-5.3.9.jar:5.3.9]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.9.jar:5.3.9]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750) ~[spring-aop-5.3.9.jar:5.3.9]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:692) ~[spring-aop-5.3.9.jar:5.3.9]
at com.huan.seata.service.impl.AccountServiceImpl$$EnhancerBySpringCGLIB$$20806094.debit(<generated>) ~[classes/:na]
at com.huan.seata.controller.AccountController.debit(AccountController.java:28) ~[classes/:na]
at com.huan.seata.controller.AccountController$$FastClassBySpringCGLIB$$7c176670.invoke(<generated>) ~[classes/:na]
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.3.9.jar:5.3.9]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:779) ~[spring-aop-5.3.9.jar:5.3.9]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.3.9.jar:5.3.9]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750) ~[spring-aop-5.3.9.jar:5.3.9]
at io.seata.spring.annotation.GlobalTransactionalInterceptor$2.execute(GlobalTransactionalInterceptor.java:184) ~[seata-all-1.4.2.jar:1.4.2]
at io.seata.tm.api.TransactionalTemplate.execute(TransactionalTemplate.java:127) ~[seata-all-1.4.2.jar:1.4.2]
at io.seata.spring.annotation.GlobalTransactionalInterceptor.handleGlobalTransaction(GlobalTransactionalInterceptor.java:181) ~[seata-all-1.4.2.jar:1.4.2]
at io.seata.spring.annotation.GlobalTransactionalInterceptor.invoke(GlobalTransactionalInterceptor.java:150) ~[seata-all-1.4.2.jar:1.4.2]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.9.jar:5.3.9]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750) ~[spring-aop-5.3.9.jar:5.3.9]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:692) ~[spring-aop-5.3.9.jar:5.3.9]
at com.huan.seata.controller.AccountController$$EnhancerBySpringCGLIB$$b98db7f4.debit(<generated>) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_192]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_192]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_192]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_192]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:197) ~[spring-web-5.3.9.jar:5.3.9]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:141) ~[spring-web-5.3.9.jar:5.3.9]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106) ~[spring-webmvc-5.3.9.jar:5.3.9]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) ~[spring-webmvc-5.3.9.jar:5.3.9]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808) ~[spring-webmvc-5.3.9.jar:5.3.9]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.3.9.jar:5.3.9]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1064) ~[spring-webmvc-5.3.9.jar:5.3.9]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963) ~[spring-webmvc-5.3.9.jar:5.3.9]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.9.jar:5.3.9]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.9.jar:5.3.9]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:655) ~[tomcat-embed-core-9.0.52.jar:4.0.FR]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.9.jar:5.3.9]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.52.jar:4.0.FR]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.52.jar:9.0.52]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.9.jar:5.3.9]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.9.jar:5.3.9]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.9.jar:5.3.9]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.9.jar:5.3.9]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.9.jar:5.3.9]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.9.jar:5.3.9]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) [tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) [tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) [tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) [tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357) [tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382) [tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) [tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) [tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1726) [tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) [tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) [tomcat-embed-core-9.0.52.jar:9.0.52]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.52.jar:9.0.52]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_192]
此处使用的Seata的版本是1.4.2
二、解决方案
1、数据库中不使用 datetime 数据类型
经过测试，发现 datetime 类型会出现问题，那么如果我们不使用这个类型，使用timestamp类型代替，发现就可以解决问题。
2、修改undo_log默认的序列化方式
我们知道，undo_log 默认的序列化方式 jackson，在seata中使用jackson序列化方式会有问题，那么我们修改 kryo 序列化方式就可以解决这个问题。
1、配置文件中引入 kryo
<dependency>
<groupId>com.esotericsoftware</groupId>
<artifactId>kryo</artifactId>
<version>4.0.2</version>
</dependency>
<dependency>
<groupId>de.javakaffee</groupId>
<artifactId>kryo-serializers</artifactId>
<version>0.42</version>
</dependency>
2、seata server 配置中修改undolog的序列化方式
注意：
- 经过测试修改了在seata的配置中心中修改了
client.undo.logSerialization属性的值，业务程序需要重启，否则获取不到新的值。
到此就解决了undo_log中的日期序列化问题.
三、小知识点
1、undo_log的序列化方式是何时初始化的
package io.seata.rm.datasource.undo;
import io.seata.config.ConfigurationFactory;
import io.seata.core.constants.ConfigurationKeys;
import static io.seata.common.DefaultValues.DEFAULT_TRANSACTION_UNDO_LOG_SERIALIZATION;
public interface UndoLogConstants {
String SERIALIZER_KEY = "serializer";
# 此处从配置中心中获取undo_log的序列化方式
String DEFAULT_SERIALIZER = ConfigurationFactory.getInstance()
.getConfig(ConfigurationKeys.TRANSACTION_UNDO_LOG_SERIALIZATION, DEFAULT_TRANSACTION_UNDO_LOG_SERIALIZATION);
String COMPRESSOR_TYPE_KEY = "compressorType";
}
2、何时序列化undo_log
四、完整代码
1、seata server 配置
service.vgroupMapping.tx_account_service_group=default
store.mode=db
store.db.datasource=druid
store.db.dbType=mysql
store.db.driverClassName=com.mysql.jdbc.Driver
store.db.url=jdbc:mysql://10.1.206.128:3306/seata?useUnicode=true&rewriteBatchedStatements=true
store.db.user=root
store.db.password=root
store.db.minConn=5
store.db.maxConn=30
store.db.globalTable=global_table
store.db.branchTable=branch_table
store.db.distributedLockTable=distributed_lock
store.db.queryLimit=100
store.db.lockTable=lock_table
store.db.maxWait=5000
# 注意这个属性的值
client.undo.logSerialization=kryo
2、建表语句
注意： account_date 表中的 update_time是 datetime类型，数据修改时，会修改该字段的值。
create table account_date(
id int unsigned auto_increment primary key comment '主键',
name varchar(20) comment '用户名',
balance bigint comment '账户余额,单位分',
create_time datetime comment '创建时间',
update_time datetime comment '修改时间'
) engine=InnoDB comment '账户表';
insert into account_date(id,name,balance,create_time,update_time) values (1,'张三',100000,now(),now());
CREATE TABLE IF NOT EXISTS `undo_log`
(
`branch_id` BIGINT NOT NULL COMMENT 'branch transaction id',
`xid` VARCHAR(128) NOT NULL COMMENT 'global transaction id',
`context` VARCHAR(128) NOT NULL COMMENT 'undo_log context,such as serialization',
`rollback_info` LONGBLOB NOT NULL COMMENT 'rollback info',
`log_status` INT(11) NOT NULL COMMENT '0:normal status,1:defense status',
`log_created` DATETIME(6) NOT NULL COMMENT 'create datetime',
`log_modified` DATETIME(6) NOT NULL COMMENT 'modify datetime',
UNIQUE KEY `ux_undo_log` (`xid`, `branch_id`)
) ENGINE = InnoDB COMMENT ='AT transaction mode undo table';
3、java 代码
seata序列化日期类型出错的更多相关文章
- 使用JavaScriptSerializer进行序列化日期类型应该注意的问题
原文:使用JavaScriptSerializer进行序列化日期类型应该注意的问题 JavaScriptSerializer在序列化DateTime时,是用刻度来表示的,具体在Json体现为:\/Da ...
- Jackson序列化日期类型的属性
@JsonProperty("BankSettlementDate") @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = ...
- 接收的参数为日期类型、controller控制层进行数据保存、进行重定向跳转
目录 1.接收的参数为日期类型 2.controller控制层进行数据保存 3.controller层如何进行重定向跳转(因为默认是请求转发) 4.静态资源的映射 1.接收的参数为日期类型 WEB-I ...
- java mysql 日期类型
mysql(版本:5.1.50)的时间日期类型如下: datetime 8bytes xxxx-xx-xx xx:xx:xx 1000-01-01 00:00:00到9999-12-31 23:59: ...
- flex4 日期类型字符串转日期类型（string转Date）（转）
mysql数据库中存储的日期类型通过PHP返回到flex端为字符串类型,这样在flex中进行处理时就必须要将字符串转化为Date类型.如果仅仅是 "年/月/日" 的组合,而没有涉及 ...
- SpringMVC提交数据遭遇基础类型和日期类型报400错误解决方法
使用SpringMVC开发的时候,页面如果有日期格式的数据,后台接受也是java.util.Date,则报告400错误 .下面是解决方案的演示示例: 这个是实体类,里面createDate就是java ...
- SSM-SpringMVC-27：SpringMVC类型转换之日期类型初步
------------吾亦无他,唯手熟尔,谦卑若愚,好学若饥------------- 本案例是上面的异常和日期类型转换结合的一个小小的Demo 案例开始 1.自定义处理器和处理方法: packag ...
- 新版POI如何获取日期类型的cell的值
使用POI读取Excel值的同学,一定为日期类型抓狂过! POI对单元格日期处理很弱,没有针对的类型,日期类型取出来的也是一个double值,所以同样作为数值类型.即使使用cell.setCellTy ...
- java和mysql之间的时间日期类型传递
摘自:http://blog.csdn.net/weinianjie1/article/details/6310770 MySQL(版本:5.1.50)的时间日期类型如下: datetime 8byt ...
随机推荐
- 枚举类enum
一.枚举类 package com.xxx.xf.common.enums; import com.xxx.xf.workday.contant.HolidayContant; /** * @Auth ...
- vue.js框架图片上传组件
html: <div id="app"> <div class="hello"> <div class="upload& ...
- python3.x内置函数
函数 返回值类型 函数详情 abs(x) int|float 求绝对值,若是复数则返回复数的模 all(iterable) bool 若所有元素为真则返回True(非0,非空,非None) any(i ...
- clion结合vcpkg以及GTest的使用
目录 一.vcpkg简介.下载和使用 1. vcpkg是什么 2. vcpkg下载 3. 使用vcpkg下载第三方库 二.clion结合vcpkg 1. 方法一:使用环境变量 2. 方法二:添加cma ...
- lua中的sleep实现
这篇文章主要介绍了Lua中实现sleep函数功能的4种方法,本文讲解了在一个死循环中设置一个跳出条件方法.调用系统的sleep函数法.Windows下ping命令法.socket库中select函数法 ...
- 5-7接口测试工具之jmeter的使用
1.安装 免费的,安装jdk配好系统环境变量就能用了 2.jmeter测接口 获取用户信息,接口文档定义有2种请求方式 添加线程组-->添加http请求-->输入接口文档中说明的服务器名称 ...
- Jmeter系列（18）- 八大组件
说明 取样器(Sampler):不与其他元件发⽣交互的作⽤的元件 逻辑控制器(Logic Controller):只对其⼦节点的sampler有效,⽽其他元件需要与sampler等元件交互 前置处理器 ...
- 🤩全套Java教程_Java基础入门教程，零基础小白自学Java必备教程👻002 # 第二单元 常量，变量，数据类型 #
一.本单元知识点概述 二.本单元目标 (Ⅰ)重点知识目标 1.定义出各种数据类型的变量2.理解自动类型提升3.理解强制类型转换 (Ⅱ)能力目标 1.能够定义出所有类型的常量 2.理解Java中的基本数 ...
- javascript DOM 共同父节点
* 查找两个节点的最近的一个共同父节点,可以包括节点自身 input: oNode1 和 oNode2 在同一文档中,且不会为相同的节点 function commonParentNode(oNode ...
- python从网络摄像头获取rstp视频流并截取图片保存
import cv2 def get_img_from_camera_net(folder_path): cap = cv2.VideoCapture("rtsp://admin:a ...