博主使用为activiti5.22的版本。
1、创建maven工程。
2、在pom文件中引入所需要的包，如：activiti包、数据库包。
这是我引用的包：
<dependencies> <dependency> <groupId>org.activiti</groupId> <artifactId>activiti-spring</artifactId> <version>5.22.0</version> </dependency> <!-- <dependency> <groupId>commons-dbcp</groupId> <artifactId>commons-dbcp</artifactId> <version>1.4</version> </dependency> --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.2</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.34</version> </dependency> <dependency> <groupId>org.activiti</groupId> <artifactId>activiti-engine</artifactId> <version>5.22.0</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>4.3.8.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>4.3.8.RELEASE</version> </dependency> <dependency> <groupId>com.mchange</groupId> <artifactId>c3p0</artifactId> <version>0.9.5-pre10</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>4.3.8.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-expression</artifactId> <version>4.3.8.RELEASE</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>4.1.8.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>4.1.5.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>4.1.4.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>4.1.8.RELEASE</version> </dependency> <dependency> <groupId>com.googlecode.ehcache-spring-annotations</groupId> <artifactId>ehcache-spring-annotations</artifactId> <version>1.2.0</version> </dependency> <dependency> <groupId>javax.annotation</groupId> <artifactId>jsr250-api</artifactId> <version>1.0</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>4.1.5.RELEASE</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>3.0-alpha-1</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.11</version> <scope>test</scope> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.1</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.2.2</version> </dependency> </dependencies>
引入pom文件完毕之后，在maven的resources下新建activiti.cfg.xml文件，配置数据源及引擎类。后期与spring框架结合使用，记得把此xml文件引入到spring中。
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"> <property name="url" value="jdbc:mysql://localhost:3306/activiti"></property> <property name="driverClassName" value="com.mysql.jdbc.Driver"></property> <property name="username" value="root"></property> <property name="password" value="root"></property> </bean> <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration"> <property name="dataSource" ref="dataSource"></property> </bean>
下面是流程引擎配置类的几种创建方式，
@Test
public void createDataTable(){
ProcessEngineConfiguration processEngineConfiguration = ProcessEngineConfiguration.createStandaloneProcessEngineConfiguration();
processEngineConfiguration.setJdbcDriver("com.mysql.jdbc.Driver");
processEngineConfiguration.setJdbcUrl("jdbc:mysql://localhost:3306/activiti");
processEngineConfiguration.setJdbcUsername("root");
processEngineConfiguration.setJdbcPassword("root");
/**
* true：如果不存在表就创建，存在就直接使用。（默认使用该策略，真实项目不推荐使用，如果目前使用较低版本，贸然引入了更高的版本后，
* 上线之后，就会导致activiti数据库环境升级版本，可能造成线上部分表无法使用。顺便一提：activiti的版本只能向上升级，无法降级处理）
* false：流程引擎启动的时候，不会创建表，如果不存在就报错，存在就直接使用。（建议使用）
* create-drop：每次都是创建表，然后删除表，需要手动调用引擎类的close方法（更不建议使用）
*/
// processEngineConfiguration.setDatabaseSchemaUpdate("true");
// processEngineConfiguration.setDatabaseSchemaUpdate("false");
processEngineConfiguration.setDatabaseSchemaUpdate("create-drop");
ProcessEngine buildProcessEngine = processEngineConfiguration.buildProcessEngine();
// buildProcessEngine.close();
System.out.println(buildProcessEngine);
}
/**
* 配置文件的方式创建 (流方式一)
*/
@Test
public void createTabale1(){
InputStream inputStream=App.class.getClassLoader().getResourceAsStream("activiti.cfg.xml");
ProcessEngineConfiguration processEngineConfigurationFromInputStream = ProcessEngineConfiguration.
createProcessEngineConfigurationFromInputStream(inputStream);
ProcessEngine processEngine = processEngineConfigurationFromInputStream.buildProcessEngine();
System.out.println(processEngine);
}
/**
* 配置文件的方式创建 (流方式二)
* 第一种方式是调用第二种方式的源码
*/
@Test
public void createTabale2(){
InputStream inputStream=App.class.getClassLoader().getResourceAsStream("activiti.cfg.xml");
ProcessEngineConfiguration processEngineConfigurationFromInputStream = ProcessEngineConfiguration.createProcessEngineConfigurationFromInputStream(inputStream, "processEngineConfiguration");
ProcessEngine processEngine = processEngineConfigurationFromInputStream.buildProcessEngine();
System.out.println(processEngine);
}
/**
* 配置文件的方式创建 (资源方式一)
* 第一种方式是调用第二种方式的源码
*/
@Test
public void createTabale3(){
String resource="activiti.cfg.xml";
ProcessEngineConfiguration processEngineConfigurationFromResource = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource(resource);
ProcessEngine buildProcessEngine = processEngineConfigurationFromResource.buildProcessEngine();
System.out.println(buildProcessEngine);
}
/**
* 配置文件的方式创建 (资源方式二)
* 第一种方式是调用第二种方式的源码
*/
@Test
public void createTabale4(){
String resource="activiti.cfg.xml";
ProcessEngineConfiguration processEngineConfigurationFromResource = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource(resource,"processEngineConfiguration");
ProcessEngine buildProcessEngine = processEngineConfigurationFromResource.buildProcessEngine();
System.out.println(buildProcessEngine);
}
/**
* 默认的方式创建 (资源方式一)
* 通过文件的位置：activiti.cfg.xml。此处我的文件位置是在resources下
*/
@Test
public void createTabale5(){
ProcessEngineConfiguration processEngineConfigurationFromResource = ProcessEngineConfiguration.createProcessEngineConfigurationFromResourceDefault();
ProcessEngine buildProcessEngine = processEngineConfigurationFromResource.buildProcessEngine();
System.out.println(buildProcessEngine);
}
运行后大家会发现数据库多了二十几张表，都是activiti自己的表结构，没错吧。后期与实际业务结合的时候，可根据需求再自定义表与之结合即可。
后续会补上aciviti的表结构详解，尽请期待！
原文地址：https://www.cnblogs.com/shijianhenjinpo/p/8988267.html
时间： 2024-10-05 04:01:45