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SpringCloud整合Activiti踩坑 SpringCloud整合Activiti过程中的踩坑记录

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前言

最近需要用到工作流,选择了Activiti,刚开始配置起来并没有很顺利。记录一下希望对读者们有帮助。

先来看我这边项目的环境:主要为JDK1.8,SpringbBoot2.3.5,MyBatis-Plus3.3.2,

MySql8.0.21,Shiro1.5.3,idea 2019.3

<java.version>1.8</java.version>
<spring.cloud.version>Hoxton.SR9</spring.cloud.version>
<spring.boot.version>2.3.5.RELEASE</spring.boot.version>
<ali.cloud.version>2.2.1.RELEASE</ali.cloud.version>
<ali.druid.version>1.1.13</ali.druid.version>
<mybatis.plus.version>3.3.2</mybatis.plus.version>
<mysql.version>8.0.21</mysql.version>
<shiro.version>1.5.3</shiro.version>

关于Activiti的配置文件,在nacos中管理yml

数据库参数配置文件

spring:
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    druid:
      driver-class-name: com.mysql.cj.jdbc.Driver
      url: jdbc:mysql://locahost:3306/activiti_test?useUnicode=true&characterEncoding=UTF-8
      username: developer
      password: developer
      initial-size: 10
      max-active: 100
      min-idle: 10
      max-wait: 60000
      pool-prepared-statements: true
      max-pool-prepared-statement-per-connection-size: 20
      time-between-eviction-runs-millis: 60000
      min-evictable-idle-time-millis: 300000

activiti配置文件

spring:
  activiti:
    #1.flase: 默认值。activiti在启动时,会对比数据库表中保存的版本,如果没有表或者版本不匹配,将抛出异常
    #2.true: activiti会对数据库中所有表进行更新操作。如果表不存在,则自动创建
    #3.create_drop: 在activiti启动时创建表,在关闭时删除表(必须手动关闭引擎,才能删除表)
    #4.drop-create: 在activiti启动时删除原来的旧表,然后在创建新表(不需要手动关闭引擎)
    database-schema-update: true
    #检测历史表是否存在
    db-history-used: true
    #记录历史等级 可配置的历史级别有none, activity, audit, full
    history-level: full
    #校验流程文件,默认校验resources下的processes文件夹里的流程文件
    check-process-definitions: false

理想情况下,当启动项目后,会自动生成25张表。

错误一:shiro与serurity冲突

引用Activiti7.1.0.M6

<!-- https://mvnrepository.com/artifact/org.activiti/activiti-spring-boot-starter -->
<dependency>
    <groupId>org.activiti</groupId>
    <artifactId>activiti-spring-boot-starter</artifactId>
    <version>7.1.0.M6</version>
</dependency>

发现启动报错。报错信息如下:

Description:
 
The bean 'securityManager', defined in class path resource [org/activiti/core/common/spring/security/config/ActivitiSpringSecurityAutoConfiguration.class], could not be registered. A bean with that name has already been defined in class path resource [com/lidomtech/erp/admin/modules/security/config/ShiroConfig.class] and overriding is disabled.
 
Action:
 
Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true
 
Disconnected from the target VM, address: '127.0.0.1:5571', transport: 'socket'
 
Process finished with exit code 0

很明显,这里提示ActivitiSpringSecurityAutoConfiguration与ShiroConfig冲突了。小编项目里面运用的是Shiro,而Activiti默认引用了SpringSecurity。

处理:在启动类屏蔽SpringSecurity

@SpringBootApplication(exclude = {
 
    org.springframework.boot.actuate.autoconfigure.security.servlet.ManagementWebSecurityAutoConfiguration.class,
        org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration.class
})

小编心想,可以启动成功了吧!

再次运行,没成想,又报了同样的错误!!这回纳闷了,是不是版本太高了?经查阅,原来Activiti强引用了SpringSecurity里的内容,强引用UserDetailsService, 所以我们还需要把版本降到7.1.0.M4及以下。

处理:更换版本7.1.0.M4及以下

<!-- https://mvnrepository.com/artifact/org.activiti/activiti-spring-boot-starter -->
<dependency>
    <groupId>org.activiti</groupId>
    <artifactId>activiti-spring-boot-starter</artifactId>
    <version>7.1.0.M2</version>
</dependency>

这回可以了吧?!

再次运行

Description:
 
An attempt was made to call a method that does not exist. The attempt was made from the following location:
 
    com.baomidou.mybatisplus.core.MybatisMapperAnnotationBuilder.getLanguageDriver(MybatisMapperAnnotationBuilder.java:371)
 
The following method did not exist:
 
    com.baomidou.mybatisplus.core.MybatisConfiguration.getLanguageDriver(Ljava/lang/Class;)Lorg/apache/ibatis/scripting/LanguageDriver;

啊这,与mybatisplus冲突

错误二:与mybatis冲突

经查官网,activiti会有默认的MyBatis连接池设置,需要讲其依赖的MyBatis注释,才不会引项目中的MyBatis冲突

处理:注释包中的MyBatis

<dependency>
			<groupId>org.activiti</groupId>
			<artifactId>activiti-spring-boot-starter</artifactId>
			<exclusions>
				<exclusion>
					<groupId>org.mybatis</groupId>
					<artifactId>mybatis</artifactId>
				</exclusion>
			</exclusions>
			<version>7.1.0.M2</version>
		</dependency>

接着,再次启动,启动成功!

顺利生成25张表

 关于idea插件

idea里面的直接搜索,对2020.3版本不兼容(建议使用2019版本),可以在http://plugins.jetbrains.com/下载再引进idea

 下载好后,在idea的File---->Settings---->Plugins----> 

重启后,新增能看到这个说明安装成功

总结

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