activiti7從act_ge_bytearray表中查詢資源文件並保存到桌面文件夾中

package com.zcc.activiti02;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngineConfiguration;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.ProcessDefinition;
import org.activiti.engine.repository.ProcessDefinitionQuery;
import org.apache.commons.io.IOUtils;

import java.io.*;

/**
 * 從act_ge_bytearray表中查詢資源文件並保存到桌面文件夾中
 *
 */
public class QueryBpmnFile {
    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();

        RepositoryService repositoryService = processEngine.getRepositoryService();
        //獲取查詢器
        ProcessDefinitionQuery processDefinitionQuery = repositoryService.createProcessDefinitionQuery();
        //設置查詢條件
        processDefinitionQuery.processDefinitionKey("myProcess");

        //執行查詢操作，得到想要流程定義信息
        ProcessDefinition processDefinition = processDefinitionQuery.singleResult();

        //通過流程定義信息得到部署id
        String deploymentId = processDefinition.getDeploymentId();

        //實現讀寫bpmn文件信息
        InputStream bpmnIs = repositoryService.getResourceAsStream(deploymentId, processDefinition.getResourceName());

        //構建輸出流
        FileOutputStream bpmnOs = null;
        try {
            bpmnOs = new FileOutputStream("C:\\Users\\Administrator\\Desktop\\新建文件夾\\"+processDefinition.getResourceName());
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }

        //輸入流，輸出流的轉換
        try {
            IOUtils.copy(bpmnIs,bpmnOs);
        } catch (IOException e) {
            e.printStackTrace();
        }


    }
}