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SpringCloud整合Activiti過(guò)程中的踩坑記錄

更新時(shí)間：2021年09月08日 14:51:33 作者：l去留無(wú)心

由于項(xiàng)目需要,最近開(kāi)始在項(xiàng)目Spring boot中集成工作流引擎Activiti，由于第一次集成,一路上步步都是坑,所以這篇文章主要給大家介紹了關(guān)于SpringCloud整合Activiti過(guò)程中所遇到的踩坑記錄,需要的朋友可以參考下

前言

最近需要用到工作流，選擇了Activiti，剛開(kāi)始配置起來(lái)并沒(méi)有很順利。記錄一下希望對(duì)讀者們有幫助。

先來(lái)看我這邊項(xiàng)目的環(huán)境：主要為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>

關(guān)于Activiti的配置文件，在nacos中管理yml

數(shù)據(jù)庫(kù)參數(shù)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： 默認(rèn)值。activiti在啟動(dòng)時(shí)，會(huì)對(duì)比數(shù)據(jù)庫(kù)表中保存的版本，如果沒(méi)有表或者版本不匹配，將拋出異常
    #2.true： activiti會(huì)對(duì)數(shù)據(jù)庫(kù)中所有表進(jìn)行更新操作。如果表不存在，則自動(dòng)創(chuàng)建
    #3.create_drop： 在activiti啟動(dòng)時(shí)創(chuàng)建表，在關(guān)閉時(shí)刪除表（必須手動(dòng)關(guān)閉引擎，才能刪除表）
    #4.drop-create： 在activiti啟動(dòng)時(shí)刪除原來(lái)的舊表，然后在創(chuàng)建新表（不需要手動(dòng)關(guān)閉引擎）
    database-schema-update: true
    #檢測(cè)歷史表是否存在
    db-history-used: true
    #記錄歷史等級(jí) 可配置的歷史級(jí)別有none, activity, audit, full
    history-level: full
    #校驗(yàn)流程文件，默認(rèn)校驗(yàn)resources下的processes文件夾里的流程文件
    check-process-definitions: false

理想情況下，當(dāng)啟動(dòng)項(xiàng)目后，會(huì)自動(dòng)生成25張表。

錯(cuò)誤一：shiro與serurity沖突

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>

發(fā)現(xiàn)啟動(dòng)報(bào)錯(cuò)。報(bào)錯(cuò)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

很明顯，這里提示ActivitiSpringSecurityAutoConfiguration與ShiroConfig沖突了。小編項(xiàng)目里面運(yùn)用的是Shiro，而Activiti默認(rèn)引用了SpringSecurity。

處理：在啟動(dòng)類(lèi)屏蔽SpringSecurity

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

小編心想，可以啟動(dòng)成功了吧！

再次運(yùn)行，沒(méi)成想，又報(bào)了同樣的錯(cuò)誤??！這回納悶了，是不是版本太高了？經(jīng)查閱，原來(lái)Activiti強(qiáng)引用了SpringSecurity里的內(nèi)容，強(qiáng)引用UserDetailsService，所以我們還需要把版本降到7.1.0.M4及以下。

處理：更換版本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>

這回可以了吧？！

再次運(yùn)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;

啊這，與mybatisplus沖突

錯(cuò)誤二：與mybatis沖突

經(jīng)查官網(wǎng)，activiti會(huì)有默認(rèn)的MyBatis連接池設(shè)置，需要講其依賴(lài)的MyBatis注釋?zhuān)挪粫?huì)引項(xiàng)目中的MyBatis沖突

處理：注釋包中的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>

接著，再次啟動(dòng)，啟動(dòng)成功！

順利生成25張表