环境
  JDK 1.8
  MySQL 5.6
  Tomcat 7
  Eclipse-Luna
  activiti 6.0

一、Activiti数据查询
准备数据:

package com.wjy.act;

import org.activiti.engine.IdentityService;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.identity.Group; public class SaveGroup { public static void main(String[] args) {
ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
IdentityService is = engine.getIdentityService();
for(int i = 0; i < 10; i++) {
Group group = is.newGroup(String.valueOf(i));
group.setName("Group_" + i);
group.setType("TYPE_" + i);
is.saveGroup(group);//保存到表act_id_group
}
engine.close();
System.exit(0); } }

list 查询多条和count 数量统计:

package com.wjy.act;

import java.util.List;

import org.activiti.engine.IdentityService;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.identity.Group; public class TestList { public static void main(String[] args) {
ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
IdentityService is = engine.getIdentityService(); //测试list查询
List<Group> groups = is.createGroupQuery().list();
for(Group g : groups) {
System.out.println(g.getId() + "---" + g.getName() + "---" + g.getType());
}
//测试 count
long size = is.createGroupQuery().count();
System.out.println(size);
} }

listPage 分页查询:

package com.wjy.act;

import java.util.List;

import org.activiti.engine.IdentityService;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.identity.Group; public class TestListPage { public static void main(String[] args) {
ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
IdentityService is = engine.getIdentityService(); //分页查询 listPage
List<Group> groups = is.createGroupQuery().listPage(1, 5);
for(Group g : groups) {
System.out.println(g.getId() + "---" + g.getName() + "---" + g.getType());
}
} }

singleResult 查询单条

package com.wjy.act;

import org.activiti.engine.IdentityService;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.identity.Group; public class TestSingle { public static void main(String[] args) {
ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
IdentityService is = engine.getIdentityService();
//测试singleResult
Group g = is.createGroupQuery().groupName("Group_0").singleResult();
System.out.println(g.getId());
} }

asc 升序和desc 降序:

package com.wjy.act;

import java.util.List;

import org.activiti.engine.IdentityService;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.identity.Group; public class TestSort { public static void main(String[] args) {
ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
IdentityService is = engine.getIdentityService();
//测试降序 升序 需要根据字段orderby
//多字段排序 orderby之后都要跟上asc() 或desc()
//is.createGroupQuery().orderByGroupId().asc().orderByGroupName().asc().list();
List<Group> groups = is.createGroupQuery().orderByGroupId().desc().orderByGroupName().asc().list();
for(Group g : groups) {
System.out.println(g.getId());
}
} }

按照字段条件查询:

package com.wjy.act;

import java.util.List;

import org.activiti.engine.IdentityService;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.identity.Group; public class FieldQuery { public static void main(String[] args) {
ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
IdentityService is = engine.getIdentityService();
//按照字段条件查询
List<Group> groups = is.createGroupQuery().groupName("Group_1").groupType("TYPE_1").list();
for(Group g : groups) {
System.out.println(g.getId());
}
} }

支持原生sql查询:

package com.wjy.act;

import java.util.List;

import org.activiti.engine.IdentityService;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.identity.Group; public class NativeQuery { public static void main(String[] args) {
ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
IdentityService is = engine.getIdentityService(); //支持原生sql语句查询
List<Group> groups = is.createNativeGroupQuery()
.sql("SELECT * FROM ACT_ID_GROUP where NAME_ = #{name}")
.parameter("name", "Group_2").list();
for (Group g : groups) {
System.out.println(g.getId());
}
} }

二、流程文件部署
1、DeploymentBuilder对象
方法addClasspathResource:

package com.wjy.deploy;

import java.io.InputStream;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.repository.DeploymentBuilder; public class TextQuery { public static void main(String[] args) throws Exception {
ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
// 存储服务
RepositoryService rs = engine.getRepositoryService(); DeploymentBuilder builder = rs.createDeployment();
builder.addClasspathResource("my_text.txt");
Deployment dep = builder.deploy();
// 数据查询
InputStream is = rs.getResourceAsStream(dep.getId(), "my_text.txt");
int count = is.available();
byte[] contents = new byte[count];
is.read(contents);
String result = new String(contents);
//输入结果
System.out.println(result); } }

方法addInputStream:

package com.wjy.deploy;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream; import javax.imageio.ImageIO; import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.repository.ProcessDefinition; public class ImageQuery { public static void main(String[] args) throws Exception {
// 创建流程引擎
ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
// 得到流程存储服务对象
RepositoryService repositoryService = engine.getRepositoryService();
// 部署一份流程文件与相应的流程图文件
Deployment dep = repositoryService.createDeployment().addClasspathResource("gen.bpmn").deploy();
// 查询流程定义
ProcessDefinition def = repositoryService.createProcessDefinitionQuery().deploymentId(dep.getId()).singleResult();
// 查询资源文件
InputStream is = repositoryService.getProcessDiagram(def.getId());
// 将输入流转换为图片对象
BufferedImage image = ImageIO.read(is);
// 保存为图片文件
File file = new File("resource/result.png");
if (!file.exists()) file.createNewFile();
FileOutputStream fos = new FileOutputStream(file);
ImageIO.write(image, "png", fos);
fos.close();
is.close();
} }

方法addZipInputStream:

package com.wjy.deploy;

import java.io.File;
import java.io.FileInputStream;
import java.util.zip.ZipInputStream; import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.DeploymentBuilder; public class ZipTest { public static void main(String[] args) throws Exception {
ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
// 存储服务
RepositoryService rs = engine.getRepositoryService(); DeploymentBuilder builder = rs.createDeployment(); FileInputStream fis = new FileInputStream(new File("resource/datas.zip"));
ZipInputStream zis = new ZipInputStream(fis); builder.addZipInputStream(zis); builder.deploy();
} }

方法addBpmnModel:

package com.wjy.deploy;

import org.activiti.bpmn.model.BpmnModel;
import org.activiti.bpmn.model.EndEvent;
import org.activiti.bpmn.model.SequenceFlow;
import org.activiti.bpmn.model.StartEvent;
import org.activiti.bpmn.model.UserTask;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.DeploymentBuilder; public class BpmnTest { public static void main(String[] args) {
ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
// 存储服务
RepositoryService rs = engine.getRepositoryService(); DeploymentBuilder builder = rs.createDeployment();
builder.addBpmnModel("My Process", createProcessModel()); builder.deploy();
} private static BpmnModel createProcessModel() {
// 创建BPMN模型对象
BpmnModel model = new BpmnModel();
// 创建一个流程定义
org.activiti.bpmn.model.Process process = new org.activiti.bpmn.model.Process();
model.addProcess(process);
process.setId("myProcess");
process.setName("My Process");
// 开始事件
StartEvent startEvent = new StartEvent();
startEvent.setId("startEvent");
process.addFlowElement(startEvent);
// 用户任务
UserTask userTask = new UserTask();
userTask.setName("User Task");
userTask.setId("userTask");
process.addFlowElement(userTask);
// 结束事件
EndEvent endEvent = new EndEvent();
endEvent.setId("endEvent");
process.addFlowElement(endEvent);
// 添加流程顺序
process.addFlowElement(new SequenceFlow("startEvent", "userTask"));
process.addFlowElement(new SequenceFlow("userTask", "endEvent"));
return model;
} }

方法addString和addBytes:略

上面的方法是加载流程方法,另外方法deploy是将加载的流程实现部署,返回对象Deployment,部署记录记录到表表:act_re_deployment,流程则记录到表:act_ge_bytearray。

2、部署验证

默认会进行格式和流程定义验证

格式验证:

package com.wjy.deploy;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.DeploymentBuilder; public class SchemaError { public static void main(String[] args) {
ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
// 存储服务
RepositoryService rs = engine.getRepositoryService(); DeploymentBuilder builder = rs.createDeployment();
//schema_error.bpmn 格式有问题 比如说在里面加入了无效标签<abc>angus</abc>
builder.addClasspathResource("error/schema_error.bpmn");
//关闭格式验证 disableSchemaValidation
//builder.disableSchemaValidation();
builder.deploy();
} }

流程验证:

package com.wjy.deploy;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.DeploymentBuilder; public class BpmnError { public static void main(String[] args) {
ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
// 存储服务
RepositoryService rs = engine.getRepositoryService(); DeploymentBuilder builder = rs.createDeployment();
//bpmn_error.bpmn 流程有问题 比如说有两个开始节点
builder.addClasspathResource("error/bpmn_error.bpmn");
//关闭流程验证 disableBpmnValidation
//builder.disableBpmnValidation();
builder.deploy();
} }

3、查询部署资源

package com.wjy.deploy;

import java.io.InputStream;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.repository.ProcessDefinition; public class BpmnQuery { public static void main(String[] args) throws Exception {
// 创建流程引擎
ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
// 得到流程存储服务对象
RepositoryService repositoryService = engine.getRepositoryService();
// 部署一份流程文件
Deployment dep = repositoryService.createDeployment().addClasspathResource("gen.bpmn").deploy();
// 查询流程定义
//查询流程定义实体
ProcessDefinition def = repositoryService.createProcessDefinitionQuery().deploymentId(dep.getId()).singleResult();
// 查询资源文件
InputStream is = repositoryService.getProcessModel(def.getId()); // 读取输入流
int count = is.available();
byte[] contents = new byte[count];
is.read(contents);
String result = new String(contents);
//输入输出结果
System.out.println(result); } }

查询流程图参考上面方法addInputStream。

4、删除部署资源
repositoryService.deleteDeployment(String deploymentId, boolean cascade)
(1)不管是否指定级联,都会删除部署相关的身份数据(act_id*)、流程定义数据(act_re_procdef)、流程资源(act_ge_bytearray)与部署数据(act_re_deployment)。
(2)如果设置为级联删除,则会将运行的流程实例、流程任务以及流程实例的历史数据删除。
(3)如果不级联删除,但是存在运行时数据,例如还有流程实例(act_ru*),就会删除失败。

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