activiti7.0集成人大金仓数据库

说明

人大金仓数据库和mysql数据库比较相似，部分语法也类似。activiti中默认集成的是mysql数据源，而且并没有集成过人大金仓数据库。所以想要集成人大金仓数据库就要将该类的的数据源配置到其中去。这里的思路就是在流程引擎初始化数据库datasource的时候将配置文件重写。在工作流源码中我们不难看出：SpringProcessEngineConfiguration是处理工作流引擎的配置类，所以我们将AbstractProcessEngineAutoConfiguration中的ActivitiDatasourceProperties重写即可。

附录：传送门----人大金仓数据库和mysql的语法。

1、pom文件

<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency>
<!-- 工作流集成springboot基础包 --><dependency><groupId>org.activiti</groupId><artifactId>activiti-spring-boot-starter</artifactId><version>7.1.0.M4</version></dependency>
<!-- 工作流生成流程图片支持包 --><dependency><groupId>org.activiti</groupId><artifactId>activiti-image-generator</artifactId><version>7.1.0.M4</version></dependency>
<!-- 人大金仓驱动和数据库包 --><dependency><groupId>org.postgresql</groupId><artifactId>postgresql</artifactId><version>42.2.9</version></dependency><dependency><groupId>cn.com.kingbase</groupId><artifactId>kingbase8</artifactId><version>8.6.0</version></dependency><!-- 阿里 druid 数据源 --><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.2.3</version></dependency>
<!-- 配置文件支撑包 --><dependency><groupId>org.activiti</groupId><artifactId>activiti-spring-boot-starter-basic</artifactId><version>6.0.0</version></dependency>

2、application.yml

spring:datasource:url: jdbc:kingbase8://127.0.0.1:54321/activiti_test?characterEncoding=UTF-8&serverTimezone=GMT%2B8username: activitipassword: 123456driver-class-name: com.kingbase8.Drivertype: com.alibaba.druid.pool.DruidDataSourcedruid:driver-class-name: com.kingbase8.Drivertest-while-idle: falsevalidation-query: select 1
#重要配置activiti:database-type: postgresdatabase-schema: publicdatabase-schema-update: true   db-history-used: true  history-level: full   application:name: activiti_demomain:allow-bean-definition-overriding: true
#分页支持
pagehelper:helperDialect: postgresql
logging:level:org.activiti.engine.impl.persistence.entity: debug

3、配置类ActivitiConfig和ActivitiDatasourceProperties

@Configuration
@AutoConfigureAfter({DataSourceAutoConfiguration.class})
@AutoConfigureBefore({JpaProcessEngineAutoConfiguration.class})
public class ActivitiConfig {@Configuration@EnableConfigurationProperties({ActivitiProperties.class})public static class ActivitiConfiguration extends AbstractProcessEngineAutoConfiguration {private ActivitiDatasourceProperties activitiDatasourceProperties;public ActivitiDatasourceProperties getActivitiDatasourceProperties() {return activitiDatasourceProperties;}@Autowiredpublic void setActivitiDatasourceProperties(ActivitiDatasourceProperties activitiDatasourceProperties) {this.activitiDatasourceProperties = activitiDatasourceProperties;}@Bean@ConditionalOnMissingBeanpublic SpringProcessEngineConfiguration springProcessEngineConfiguration(DataSource dataSource,PlatformTransactionManager transactionManager, SpringAsyncExecutor springAsyncExecutor)throws IOException {SpringProcessEngineConfiguration config = baseSpringProcessEngineConfiguration(dataSource,transactionManager, springAsyncExecutor);return config;}//重新构造数据源private SpringProcessEngineConfiguration baseSpringProcessEngineConfiguration(DataSource dataSource, PlatformTransactionManager transactionManager, SpringAsyncExecutor springAsyncExecutor) {SpringProcessEngineConfiguration config = new SpringProcessEngineConfiguration();config.setDataSource(dataSource);config.setTransactionManager(transactionManager);config.setAsyncExecutor(springAsyncExecutor);config.setDatabaseType(this.activitiDatasourceProperties.getDatabaseType());config.setDatabaseSchemaUpdate("true");config.setAsyncExecutorActivate(false);config.setAsyncExecutorCorePoolSize(1);config.setAsyncExecutorMaxPoolSize(1);return config;}}}

@ConfigurationProperties(prefix = "spring.activiti")
@Component
public class ActivitiDatasourceProperties {private String databaseType;public String getDatabaseType() {return databaseType;}public void setDatabaseType(String databaseType) {this.databaseType = databaseType;}
}```