安装流程设计器插件：

使用框架提供的方式创建23张表：

流程部署，定义，启动&查询，办理任务：

流程的部署，查询，删除 & 获取流程定义文件 & 流程实例的启动，查询，删除 & 查询，办理个人任务：

package cn.itcast.activiti;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.InputStream;import java.io.OutputStream;import java.util.List;import java.util.zip.ZipInputStream;import org.activiti.engine.ProcessEngine;import org.activiti.engine.ProcessEngines;import org.activiti.engine.repository.DeploymentBuilder;import org.activiti.engine.repository.ProcessDefinition;import org.activiti.engine.repository.ProcessDefinitionQuery;import org.activiti.engine.runtime.ProcessInstance;import org.activiti.engine.task.Task;import org.activiti.engine.task.TaskQuery;import org.apache.commons.io.FileUtils;import org.junit.Test;/** * 测试API * @author zhaoqx * */public class ActivitiAPITest {	ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();	//部署流程定义两种方式	@Test	public void test1() throws Exception{		DeploymentBuilder deploymentBuilder = processEngine.getRepositoryService().createDeployment();		//方式一：加载单个的流程定义文件		//deploymentBuilder.addClasspathResource("qjlc.bpmn");		//deploymentBuilder.addClasspathResource("qjlc.png");		//deploymentBuilder.deploy();				//方式二：加载zip压缩文件		ZipInputStream zipInputStream = new ZipInputStream(new FileInputStream(new File("d:\\Desktop.zip")));		deploymentBuilder.addZipInputStream(zipInputStream);		deploymentBuilder.deploy();	}		//查询最新版本的流程定义	@Test	public void test2() throws Exception{		//processEngine.getXXXService().createXXXQuery();		//processEngine.getRepositoryService().createDeploymentQuery().list();		//processEngine.getRuntimeService().createProcessInstanceQuery().list();		//processEngine.getTaskService().createTaskQuery().list();		//processEngine.getHistoryService().createHistoricActivityInstanceQuery().list();				ProcessDefinitionQuery query = processEngine.getRepositoryService().createProcessDefinitionQuery();		//添加过滤条件		//query.processDefinitionNameLike("请假%");		//添加过滤条件，查询最新的		//query.latestVersion();		//添加排序条件		query.orderByProcessDefinitionId().asc();		List
    
      list = query.listPage(0, 10);		for (ProcessDefinition processDefinition : list) {			System.out.println(processDefinition);		}	}		//删除流程定义	@Test	public void test3(){		String deploymentId = "101";//部署id		processEngine.getRepositoryService().deleteDeployment(deploymentId);	}		//查询流程定义文件(bpmn、png)名称和对应的输入流	@Test	public void test4() throws Exception{		String deploymentId = "901";//部署id		List
     
       list = processEngine.getRepositoryService().getDeploymentResourceNames(deploymentId);		for (String name : list) {			InputStream in = processEngine.getRepositoryService().getResourceAsStream(deploymentId, name);			System.out.println(name);			//通过一个输出流写			OutputStream out = new FileOutputStream(new File("d:\\"+name));			/*byte[] b = new byte[1024];//1KB			in.read(b);			out.write(b);			out.close();*/						FileUtils.copyInputStreamToFile(in, new File("d:\\"+name));						in.close();		}	}		//启动流程实例两种方式	@Test	public void test5(){		//方式一：根据流程定义的id启动流程实例		//String processDefinitionId;//流程定义id		//processEngine.getRuntimeService().startProcessInstanceById(processDefinitionId);				//方式二：根据流程定义key启动流程实例（建议使用）----自动选择最新版本的流程定义		String processDefinitionKey = "qjlc";//流程定义key		ProcessInstance processInstance = processEngine.getRuntimeService().startProcessInstanceByKey(processDefinitionKey);		System.out.println(processInstance.getId());	}		//查询流程实例	@Test	public void test6(){		List
      
        list = processEngine.getRuntimeService().createProcessInstanceQuery().list();		for (ProcessInstance processInstance : list) {			System.out.println(processInstance);		}	}		//删除流程实例	@Test	public void test7(){		String processInstanceId = "1301";//流程实例id		String deleteReason = "不请假了";//删除原因		processEngine.getRuntimeService().deleteProcessInstance(processInstanceId, deleteReason);	}		//查询个人任务	@Test	public void test8(){		//任务查询对象，可以查询act_ru_task		TaskQuery query = processEngine.getTaskService().createTaskQuery();		query.taskAssignee("张三");		//添加排序条件		query.orderByTaskCreateTime().desc();		//分页查询		List
       
         list = query.listPage(0, 5);		for (Task task : list) {			System.out.println(task);		}	}		//办理个人任务	@Test	public void test9(){		String taskId = "1504";//任务id		processEngine.getTaskService().complete(taskId);	}}
       
      
     
    

总结API

l         几个接口（和表有对应关系）

1、Deployment对应部署表act_re_deployment

2、ProcessDefinition对应流程定义表act_re_procdef

3、ProcessInstance对应流程实例表act_ru_execution

4、Task对应任务表act_ru_task

l         几个Query对象（查询对应的数据表）

1、DeploymentQuery对应部署表act_re_deployment

2、ProcessDefinitionQuery对应流程定义表act_re_procdef

3、ProcessInstanceQuery对应流程实例表act_ru_execution

4、TaskQuery对应任务表act_ru_task

l         几个Service对象

1、RepositoryService：操作流程定义相关信息的、部署流程定义、删除流程定义、查询流程定义、查询流程定义文件名称和输入流

2、RuntimeService：操作流程实例的

3、TaskService：操作任务的

框架提供的网页版流程设计器使用：