activiti基礎環境搭建創建數據庫表及策略

博主使用為activiti5.22的版本。

1、創建maven工程。

2、在pom文件中引入所需要的包，如：activiti包、數據庫包。

這是我引用的包：

<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文件完畢之后，在maven的resources下新建activiti.cfg.xml文件，配置數據源及引擎類。后期與spring框架結合使用，記得把此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類的幾種創建方式，            

　　@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：如果不存在表就創建，存在就直接使用。（默認使用該策略，真實項目不推薦使用，如果目前使用較低版本，貿然引入了更高的版本后，
         * 上線之后，就會導致activiti數據庫環境升級版本，可能造成線上部分表無法使用。順便一提：activiti的版本只能向上升級，無法降級處理）
         * false：流程引擎啟動的時候，不會創建表，如果不存在就報錯，存在就直接使用。（建議使用）
         * create-drop：每次都是創建表，然后刪除表，需要手動調用引擎類的close方法（更不建議使用）
         */
//        processEngineConfiguration.setDatabaseSchemaUpdate("true");
//        processEngineConfiguration.setDatabaseSchemaUpdate("false");
        processEngineConfiguration.setDatabaseSchemaUpdate("create-drop");
        ProcessEngine buildProcessEngine = processEngineConfiguration.buildProcessEngine();
//        buildProcessEngine.close();
        System.out.println(buildProcessEngine);
    }
/**
     * 配置文件的方式創建 (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);
    }
    
    /**
     * 配置文件的方式創建 (流方式二)
     * 第一種方式是調用第二種方式的源碼
     */
    @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);
    }
    /**
     * 配置文件的方式創建 (資源方式一)
     * 第一種方式是調用第二種方式的源碼
     */
    @Test
    public void createTabale3(){
        String resource="activiti.cfg.xml";
        ProcessEngineConfiguration processEngineConfigurationFromResource = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource(resource);
        ProcessEngine buildProcessEngine = processEngineConfigurationFromResource.buildProcessEngine();
        System.out.println(buildProcessEngine);
    }
    
    /**
     * 配置文件的方式創建 (資源方式二)
     * 第一種方式是調用第二種方式的源碼
     */
    @Test
    public void createTabale4(){
        String resource="activiti.cfg.xml";
        ProcessEngineConfiguration processEngineConfigurationFromResource = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource(resource,"processEngineConfiguration");
        ProcessEngine buildProcessEngine = processEngineConfigurationFromResource.buildProcessEngine();
        System.out.println(buildProcessEngine);
    }
    
    /**
     * 默認的方式創建 (資源方式一)
     * 通過文件的位置：activiti.cfg.xml。此處我的文件位置是在resources下
     */
    @Test
    public void createTabale5(){
        ProcessEngineConfiguration processEngineConfigurationFromResource = ProcessEngineConfiguration.createProcessEngineConfigurationFromResourceDefault();
        ProcessEngine buildProcessEngine = processEngineConfigurationFromResource.buildProcessEngine();
        System.out.println(buildProcessEngine);
    }

運行后大家會發現數據庫多了二十幾張表，都是activiti自己的表結構，沒錯吧。后期與實際業務結合的時候，可根據需求再自定義表與之結合即可。

后續會補上aciviti的表結構詳解，盡請期待！