前面我们用代码实现了生成25张activiti表,今天我们用Activiti提供的activiti.cfg.xml配置文件来简化实现前面的功能;
官方文档参考地址:http://activiti.org/userguide/index.html#configuration
我们先在src/test/resources下创建一个xml文件 名字是:activiti.cfg.xml
然后我们从官方文档贴下参考的xml代码:
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< 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 = "jdbcUrl" value = "jdbc:h2:mem:activiti;DB_CLOSE_DELAY=1000" />
< property name = "jdbcDriver" value = "org.h2.Driver" />
< property name = "jdbcUsername" value = "sa" />
< property name = "jdbcPassword" value = "" />
< property name = "databaseSchemaUpdate" value = "true" />
< property name = "jobExecutorActivate" value = "false" />
< property name = "asyncExecutorEnabled" value = "true" />
< property name = "asyncExecutorActivate" value = "false" />
< property name = "mailServerHost" value = "mail.my-corp.com" />
< property name = "mailServerPort" value = "5025" />
</ bean >
</ beans >
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这里的话,我们要根据我们的项目 修改jdbcUrl jdbcDriver jdbcUsername jdbcPassword 当然还有下面的配置我们可以去掉一些 后面会降到这些配置的用途;
修改完后的xml如下:
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<? xml version = "1.0" encoding = "UTF-8" ?>
< 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 = "jdbcUrl" value = "jdbc:mysql://localhost:3306/db_activiti" />
< property name = "jdbcDriver" value = "com.mysql.jdbc.Driver" />
< property name = "jdbcUsername" value = "root" />
< property name = "jdbcPassword" value = "123456" />
< property name = "databaseSchemaUpdate" value = "true" />
</ bean >
</ beans >
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接下来我们就是要通过代码来读取配置文件,然后获取工作流引擎实例:
代码如下:
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/** * 使用xml配置 简化
*/
@Test public void testCreateTableWithXml(){
// 引擎配置
ProcessEngineConfiguration pec=ProcessEngineConfiguration.createProcessEngineConfigurationFromResource( "activiti.cfg.xml" );
// 获取流程引擎对象
ProcessEngine processEngine=pec.buildProcessEngine();
} |
然后我们测试的时候 先把前面db_activiti数据下的表 全部删除;
然后运行上面的测试类,我们会发现 表自动生成了:
表依然是前面的25张表;
我们会发现,使用xml配置会简化很多东西。。
完整代码打包下载:http://pan.baidu.com/s/1nuSJ3kd