mongodb java 事务_SpringDataMongoDB多文档事务的实现

一、安装MongoDB4.0.3(××)

1.1、官方安装文档

1.2、tar.gz包下载地址

1.3、复制集官方配置

二、SpringProject版本依赖(×)

Spring:5.1.1.RELEASE 以上

SpringDataMongoDB:2.1.1.RELEASE 以上

三、配置MongoTransactionManager(SpringBoot使用方式)

SpringBoot 集成非常简单,配置MongoTransastionManager,目前Spring-boot-starter-data-mongodb 版本较低不支持,因此暂未验证,SpringBoot配置复制集参考SpringBoot相关文档

@Configuration

static class Config extends AbstractMongoConfiguration {

@Bean

MongoTransactionManager transactionManager(MongoDbFactory dbFactory) {

return new MongoTransactionManager(dbFactory);

}

// ...

}

四、配置MongoTransactionManager(普通Spring项目)

file-encoding="utf-8" />

write-concern="SAFE"

read-preference="NEAREST"

threads-allowed-to-block-for-connection-multiplier="${mongo.threadsAllowedToBlockForConnectionMultiplier}"

connect-timeout="${mongo.connectTimeout}" max-wait-time="${mongo.maxWaitTime}"

socket-keep-alive="${mongo.socketKeepAlive}" socket-timeout="${mongo.socketTimeout}"

max-connection-idle-time="${mongo.maxConnectionIdleTime}"

max-connection-life-time="${mongo.maxConnectionLifeTime}"

heartbeat-socket-timeout="${mongo.heartbeatSocketTimeout}"

heartbeat-connect-timeout="${mongo.heartbeatConnectTimeout}"

min-heartbeat-frequency="${mongo.minHeartbeatFrequency}"

heartbeat-frequency="${mongo.heartbeatFrequency}" />

mongo-ref="mongoClient" />

class="org.springframework.data.mongodb.core.mapping.MongoMappingContext" />

class="org.springframework.data.mongodb.core.convert.DefaultMongoTypeMapper">

class="org.springframework.data.mongodb.core.convert.MappingMongoConverter">

五、使用事务(×)

@Service

public class StateService {

@Autowired

private MongoTemplate teplate;

@Transactional

void someBusinessFunction(Step step) {

template.insert(step);

log.debug(1/0);

};

});

六、Mongo.properties 配置

mongo.host=192.168.1.66

mongo.port=27017

mongo.replSet=192.168.1.66:2000,192.168.1.66:2001,192.168.1.66:2002

mongo.minConnectionsPerHost=10

mongo.threadsAllowedToBlockForConnectionMultiplier=4

mongo.connectTimeout=30000

mongo.maxWaitTime=3000

mongo.socketKeepAlive=false

mongo.socketTimeout=30000

mongo.maxConnectionIdleTime=0

mongo.maxConnectionLifeTime=0

mongo.heartbeatSocketTimeout=20000

mongo.heartbeatConnectTimeout=10000

mongo.minHeartbeatFrequency=3000

mongo.heartbeatFrequency=5000

mongo.database=labsta

七、最后是重点(×××××)

7.1、必须使用复制集,单节点不支持,mongodb4.2 会支持分片集事务,复制集安装请自行研究

7.2、使用事务之前(@Transaction),数据库和文档必须提前创建,如何解决呢?且看下篇

7.3、Spring版本和SpringDataMongodb版本必须遵循 @SpringProject版本依赖

7.4、注意,此处的复制集不是4.0版本之前的主从复制集群,4.0之后已废弃主从模式

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。

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