4.初始化數據庫

方法一：

 1 @Test
 2 public void createTable() {
 3 //1.創建Activiti配置對象的實例
 4 ProcessEngineConfiguration configuration = ProcessEngineConfiguration.createStandaloneProcessEngineConfiguration();
 5 //2.設置數據庫連接信息
 6 // 設置數據庫地址
 7 configuration.setJdbcUrl("jdbc:mysql://localhost:3306/testactiviti?createDatabaseIfNotExist&useUnicode=true&characterEncoding=utf8");
 
 8 // 數據庫驅動
 9 configuration.setJdbcDriver("com.mysql.jdbc.Driver");
10 // 用戶名
11 configuration.setJdbcUsername("root");
12 // 密碼
13 configuration.setJdbcPassword("root");
14 // 設置數據庫建表策略
15 /**
16  * DB_SCHEMA_UPDATE_TRUE：如果不存在表就創建表，存在就直接使用
17  * DB_SCHEMA_UPDATE_FALSE：如果不存在表就拋出異常
18  * DB_SCHEMA_UPDATE_CREATE_DROP：每次都先刪除表，再創建新的表
 
19  */
20 configuration.setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_TRUE);
21 //3.使用配置對象創建流程引擎實例（檢查數據庫連接等環境信息是否正確）
22 ProcessEngine processEngine = configuration.buildProcessEngine();
23 System.out.println(processEngine);
24 }

方法二：執行sql腳本文件activiti-5.13\database\create\activiti.mysql.create.*.sql

方法三：在類路徑下創建Activiti.cfg.xml。

1 <beans xmlns="http://www.springframework.org/schema/beans" 
2 xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" 
3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
4 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd 
5 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd 
6 http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
7 </beans>

1 <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">
2     <!-- 數據庫連接配置 -->
3 <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/testactiviti?createDatabaseIfNotExist=true&amp;useUnicode=true&amp;characterEncoding=utf8"></property>
4 <property name="jdbcDriver" value="com.mysql.jdbc.Driver"></property>
5 <property name="jdbcUsername" value="root"></property>
6 <property name="jdbcPassword" value="root"></property>
7 <!-- 建表策略 -->
8 <property name="databaseSchemaUpdate" value="true"></property>
9 </bean>

1 @Test
2 public void testDBByProperties() throws Exception {
3 // 1。 加載classpath下名為activiti.cfg.xml文件，創建核心流程引擎對象
4 ProcessEngine processEngine = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti.cfg.xml").buildProcessEngine();
5 System.out.println(processEngine);
6 }

準備Activiti環境(2)