4. SpringBoot整合Activiti配置说明

SpringBoot整合Activiti的包activiti-spring-boot-starter-basic中，未提供对参数databaseType的设置，所以需要对配置方式进行扩展。

1. 在ActivitiDatasourceProperties.java中添加新增的配置参数：

package com.example.activiti.config;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

@ConfigurationProperties(prefix = "spring.activiti")
@Component
public class ActivitiDatasourceProperties {

    private String databaseType;

    public String getDatabaseType() {
        return databaseType;
    }

    public void setDatabaseType(String databaseType) {
        this.databaseType = databaseType;
    }

}

1. 新建一个类继承AbstractProcessEngineAutoConfiguration类， 实现springProcessEngineConfiguration方法，在SpringProcessEngineConfiguration对象上设置需要新增的配置参数：

package com.example.activiti.config;

import java.io.IOException;

import javax.sql.DataSource;

import org.activiti.spring.SpringAsyncExecutor;
import org.activiti.spring.SpringProcessEngineConfiguration;
import org.activiti.spring.boot.AbstractProcessEngineAutoConfiguration;
import org.activiti.spring.boot.ActivitiProperties;
import org.activiti.spring.boot.JpaProcessEngineAutoConfiguration;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.AutoConfigureBefore;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.PlatformTransactionManager;

@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;
        }

        @Autowired
        public void setActivitiDatasourceProperties(
                ActivitiDatasourceProperties activitiDatasourceProperties) {
            this.activitiDatasourceProperties = activitiDatasourceProperties;
        }

        @Bean
        @ConditionalOnMissingBean
        public SpringProcessEngineConfiguration springProcessEngineConfiguration(DataSource dataSource,
                PlatformTransactionManager transactionManager, SpringAsyncExecutor springAsyncExecutor)
                throws IOException {
            SpringProcessEngineConfiguration config = baseSpringProcessEngineConfiguration(dataSource,
                    transactionManager, springAsyncExecutor);
            config.setDatabaseType(this.activitiDatasourceProperties.getDatabaseType());
            return config;
        }
    }

}

1. 在SpringBoot的配置文件中，添加数据库类型的设置：

spring.activiti.database-type=postgres

注意

使用KingbaseES适配Activiti时，如果使用PG形态的驱动，直接使用即可。如果使用KES形态的驱动，需要配置databaseType为postgres：

<property name="databaseType" value="postgres"></property>