SpringBoot+MyBatis（通用Mapper+PageHelper+Generator）+Activiti集成及问题解决
随便一说
因为需要搭建公司新的框架，使用了SpringBoot+MyBatis，加入了MyBatis的通用Mapper、分布插件PageHelper、MyBatis Generator，因为后面做的项目需要用到工作流，所以又需要把工作流（选用了Activiti）加进来。在没有加入Activiti之前，框架搭建的还算比较顺利，包括加入thymeleaf、lombok、swagger等，虽然遇到了问题，但解决起来都算比较顺利。但是，加入了工作流，则是遇到了大麻烦！！！
开发环境
这里假设已经有了一个框架，是由SpringBoot+MyBatis+druid+lombok+swagger+thymeleaf（这些集成会在后续的文章中进行说明），在这个框架的基础上集成Activiti。下面对开发环境及框架版本等信息进行说明：
- 开发工具：IDEA 2017.2
- JDK：1.8
- mysql：5.1.44
- SpringBoot：2.0.1
- MyBatis：3.4.5（Mapper：3.4.4，PageHelper：5.1.2，Generator对应的Maven插件：1.3.5）
- druid：1.0.19
- thymeleaf：同SpringBoot一致为2.0.1
- swagger：2.2.2
- lombok：1.16.8
- Activiti：5.22.0
集成Activiti
集成中遇到的问题，在文章的后面会给出解释说明，这里先说明怎么集成工作流。
- 添加Activiti的依赖；
- 生成Activiti的25张表。
添加依赖
xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0modelVersion>
<groupId>com.woxin.itsmgroupId>
<artifactId>itsmartifactId>
<version>0.0.1-SNAPSHOTversion>
<packaging>warpackaging>
<name>itsmname>
<description>itsm projectdescription>
<parent>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-parentartifactId>
<version>2.0.1.RELEASEversion>
<relativePath/>
parent>
<properties>
<project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8project.reporting.outputEncoding>
<java.version>1.8java.version>
<activiti.version>5.22.0activiti.version>
<spring.security.version>5.0.4.RELEASEspring.security.version>
properties>
<dependencies>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-webartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-thymeleafartifactId>
dependency>
<dependency>
<groupId>io.springfoxgroupId>
<artifactId>springfox-swagger2artifactId>
<version>2.2.2version>
dependency>
<dependency>
<groupId>io.springfoxgroupId>
<artifactId>springfox-swagger-uiartifactId>
<version>2.2.2version>
dependency>
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
<version>1.16.8version>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>druidartifactId>
<version>1.0.19version>
dependency>
<dependency>
<groupId>org.mybatis.spring.bootgroupId>
<artifactId>mybatis-spring-boot-starterartifactId>
<version>1.3.1version>
dependency>
<dependency>
<groupId>tk.mybatisgroupId>
<artifactId>mapper-spring-boot-starterartifactId>
<version>1.1.5version>
dependency>
<dependency>
<groupId>com.github.pagehelpergroupId>
<artifactId>pagehelper-spring-boot-starterartifactId>
<version>1.2.3version>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>fastjsonartifactId>
<version>1.2.16version>
dependency>
<dependency>
<groupId>org.activitigroupId>
<artifactId>activiti-springartifactId>
<version>${activiti.version}version>
<exclusions>
<exclusion>
<groupId>org.codehaus.jacksongroupId>
<artifactId>jackson-core-aslartifactId>
exclusion>
<exclusion>
<groupId>org.slf4jgroupId>
<artifactId>slf4j-log4j12artifactId>
exclusion>
<exclusion>
<artifactId>spring-contextartifactId>
<groupId>org.springframeworkgroupId>
exclusion>
<exclusion>
<artifactId>spring-jdbcartifactId>
<groupId>org.springframeworkgroupId>
exclusion>
<exclusion>
<artifactId>spring-txartifactId>
<groupId>org.springframeworkgroupId>
exclusion>
<exclusion>
<artifactId>spring-ormartifactId>
<groupId>org.springframeworkgroupId>
exclusion>
<exclusion>
<artifactId>spring-beansartifactId>
<groupId>org.springframeworkgroupId>
exclusion>
<exclusion>
<artifactId>mybatisartifactId>
<groupId>org.mybatisgroupId>
exclusion>
<exclusion>
<artifactId>activationartifactId>
<groupId>javax.activationgroupId>
exclusion>
exclusions>
dependency>
<dependency>
<groupId>org.activitigroupId>
<artifactId>activiti-modelerartifactId>
<version>${activiti.version}version>
<exclusions>
<exclusion>
<artifactId>spring-beansartifactId>
<groupId>org.springframeworkgroupId>
exclusion>
<exclusion>
<artifactId>spring-contextartifactId>
<groupId>org.springframeworkgroupId>
exclusion>
<exclusion>
<artifactId>spring-coreartifactId>
<groupId>org.springframeworkgroupId>
exclusion>
<exclusion>
<artifactId>spring-txartifactId>
<groupId>org.springframeworkgroupId>
exclusion>
<exclusion>
<artifactId>spring-webartifactId>
<groupId>org.springframeworkgroupId>
exclusion>
<exclusion>
<artifactId>spring-security-configartifactId>
<groupId>org.springframework.securitygroupId>
exclusion>
<exclusion>
<artifactId>spring-security-coreartifactId>
<groupId>org.springframework.securitygroupId>
exclusion>
<exclusion>
<artifactId>spring-security-cryptoartifactId>
<groupId>org.springframework.securitygroupId>
exclusion>
<exclusion>
<artifactId>spring-security-webartifactId>
<groupId>org.springframework.securitygroupId>
exclusion>
<exclusion>
<artifactId>spring-webmvcartifactId>
<groupId>org.springframeworkgroupId>
exclusion>
<exclusion>
<artifactId>activationartifactId>
<groupId>javax.activationgroupId>
exclusion>
<exclusion>
<artifactId>commons-ioartifactId>
<groupId>commons-iogroupId>
exclusion>
exclusions>
dependency>
<dependency>
<groupId>org.activitigroupId>
<artifactId>activiti-restartifactId>
<version>${activiti.version}version>
dependency>
<dependency>
<groupId>org.activitigroupId>
<artifactId>activiti-explorerartifactId>
<version>${activiti.version}version>
dependency>
<dependency>
<groupId>org.activitigroupId>
<artifactId>activiti-webapp-explorer2artifactId>
<version>${activiti.version}version>
dependency>
<dependency>
<groupId>org.activitigroupId>
<artifactId>activiti-diagram-restartifactId>
<version>${activiti.version}version>
dependency>
<dependency>
<groupId>org.activitigroupId>
<artifactId>activiti-simple-workflowartifactId>
<version>${activiti.version}version>
dependency>
<dependency>
<groupId>org.apache.shirogroupId>
<artifactId>shiro-springartifactId>
<version>1.4.0version>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-testartifactId>
<scope>testscope>
dependency>
dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-maven-pluginartifactId>
plugin>
<plugin>
<groupId>org.mybatis.generatorgroupId>
<artifactId>mybatis-generator-maven-pluginartifactId>
<version>1.3.5version> <dependencies>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>5.1.44version>
dependency>
<dependency>
<groupId>tk.mybatisgroupId>
<artifactId>mapperartifactId>
<version>3.4.0version>
dependency>
dependencies>
<executions>
<execution>
<id>Generate MyBatis Artifactsid>
<phase>packagephase>
<goals> <goal>generategoal>
goals>
execution>
executions>
<configuration>
<verbose>trueverbose>
<overwrite>trueoverwrite>
<configurationFile>src/main/resources/mybatis-generator-cfg.xmlconfigurationFile>
configuration>
plugin>
plugins>
build>
project>
通过测试方法生成表
在添加依赖后，在SpringBoot的测试类ApplicationTests中写一个方法，如下：
/**
* 测试生成Activiti的表结构
*/
@Test
public void createTable(){
//流程引擎配置
ProcessEngineConfiguration configuration = ProcessEngineConfiguration.createStandaloneProcessEngineConfiguration();
configuration.setJdbcDriver("com.mysql.jdbc.Driver");
configuration.setJdbcUrl("jdbc:mysql://localhost:3306/itsm?characterEncoding=UTF-8&useUnicode=true");
configuration.setJdbcUsername("root");
configuration.setJdbcPassword("root");
//DB_SCHEMA_UPDATE_FALSE = "false";//不能自动创建表，需要表存在
//DB_SCHEMA_UPDATE_CREATE_DROP = "create-drop";//先删除表再创建表
//DB_SCHEMA_UPDATE_TRUE = "true";//如果表不存在，自动创建表
configuration.setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_TRUE);
//根据引擎配置构建引擎
ProcessEngine engine = configuration.buildProcessEngine();
}运行此方法后会生成Activiti的25表，如下：
通过配置文件生成表
官网的配置文件如下：
官网的文档链接：Activiti5.x用户指导文档
在项目的resources目录下创建activiti.cfg.xml配置文件【Activiti默认配置文件的名称就是activiti.cfg.xml】，官网上给的配置示例中使用的是h2数据库，把数据库的连接信息改成自己项目的数据库信息，然后在测试类写一个方法，生成数据库表。activiti.cfg.xml文件如下：
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">
<property name="databaseType" value="mysql"/>
<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/itsm?characterEncoding=UTF-8&useUnicode=true" />
<property name="jdbcDriver" value="com.mysql.jdbc.Driver" />
<property name="jdbcUsername" value="root" />
<property name="jdbcPassword" value="root" />
<property name="databaseSchemaUpdate" value="true" />
<property name="history" value="full" />
<property name="jobExecutorActivate" value="false" />
<property name="dbIdentityUsed" value="false"/>
<property name="activityFontName" value="宋体"/>
<property name="labelFontName" value="宋体"/>
<property name="annotationFontName" value="宋体"/>
bean>
<bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean">
<property name="processEngineConfiguration" ref="processEngineConfiguration"/>
bean>
<bean id="repositoryService" factory-bean="processEngine" factory-method="getRepositoryService" />
<bean id="runtimeService" factory-bean="processEngine" factory-method="getRuntimeService" />
<bean id="taskService" factory-bean="processEngine" factory-method="getTaskService" />
<bean id="historyService" factory-bean="processEngine" factory-method="getHistoryService" />
<bean id="managementService" factory-bean="processEngine" factory-method="getManagementService" />
<bean id="IdentityService" factory-bean="processEngine" factory-method="getIdentityService" />
beans>测试方法代码：
/**
* 测试生成Activiti的表结构
*/
@Test
public void createTable(){
// //流程引擎配置
// ProcessEngineConfiguration configuration = ProcessEngineConfiguration.createStandaloneProcessEngineConfiguration();
//
// configuration.setJdbcDriver("com.mysql.jdbc.Driver");
// configuration.setJdbcUrl("jdbc:mysql://localhost:3306/itsm?characterEncoding=UTF-8&useUnicode=true");
// configuration.setJdbcUsername("root");
// configuration.setJdbcPassword("root");
//
// //DB_SCHEMA_UPDATE_FALSE = "false";//不能自动创建表，需要表存在
// //DB_SCHEMA_UPDATE_CREATE_DROP = "create-drop";//先删除表再创建表
// //DB_SCHEMA_UPDATE_TRUE = "true";//如果表不存在，自动创建表
// configuration.setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_CREATE_DROP);
// //根据引擎配置构建引擎
// ProcessEngine engine = configuration.buildProcessEngine();
ProcessEngineConfiguration configuration = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti.cfg.xml");
ProcessEngine engine = configuration.buildProcessEngine();
}集成中遇到的问题及解决
其实我在集成Activiti的时候，引入的依赖包和排除的依赖包比较包，原来是可以更简单的——引入activiti的starter，如下
org.activiti
activiti-spring-boot-starter-basic
${activiti.version}
但这样却引发了包冲突，排除冲突的架包之后，项目根本启动不了，很多异常，找了网上说的解决办法，比如在SpringBoot的应用入口类的注解@SpringBootApplication排除Activiti的一个安全配置类，还有在MyBatis及插件的依赖中排除特殊的架包，但依然启动不成功，没办法，只能是暂时换回这种比较原始的方法来集成。