activiti7業務表示Businesskey

啟動流程實例時，指定的businesskey，就會在act_ru_execution #流程實例的執行表中存儲businesskey。

Businesskey：業務標識，通常為業務表的主鍵，業務標識和流程實例一一對應。業務標識來源於業

務系統。存儲業務標識就是根據業務標識來關聯查詢業務系統的數據。

比如：請假流程啟動一個流程實例，就可以將請假單的 id 作為業務標識存儲到 activiti 中，將來查詢

activiti 的流程實例信息就可以獲取請假單的 id 從而關聯查詢業務系統數據庫得到請假單信息。

代碼：

// 根據流程定義的key啟動一個流程實例

ProcessInstance processInstance = runtimeService

.startProcessInstanceByKey(processDefinitionKey,

businessKey);

package com.zcc.activiti02;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngineConfiguration;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.repository.ProcessDefinition;
import org.activiti.engine.repository.ProcessDefinitionQuery;
import org.activiti.engine.runtime.ProcessInstance;

import java.util.List;

/**
 * 啟動流程實例時添加businesskey
 */
public class BusinessKeyAdd {
    public static void main(String[] args) {
        //創建流程引擎配置類
        ProcessEngineConfiguration processEngineConfiguration=
                ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti.cfg.xml");
        //流程引擎對象
        ProcessEngine processEngine = processEngineConfiguration.buildProcessEngine();

        //得到runtimeservice
        RuntimeService runtimeService = processEngine.getRuntimeService();
        //啟動流程實例，同時還要指定業務標識businesskey,本身就是請假單的id
        //第一個參數流程實例的key,第二個參數：業務表示businesskey
        ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("myProcess", "1001");

        System.out.println("businesskey:"+processInstance.getBusinessKey());


    }

}