Activiti7 获取资源信息及其查询流程历史信息

获取资源信息

/**

     * 获取资源信息

     *

     * @throws IOException

     */

    @Test

    public void getProcessResources() throws IOException {

        // 1:流程定义ID

        String processDefinitionId = "holiday:1:7504";

        // 2:获取RepositoryService

        RepositoryService repositoryService = defaultProcessEngine.getRepositoryService();

        // 3:创建查询对象

        ProcessDefinitionQuery processDefinitionQuery = repositoryService.createProcessDefinitionQuery();

        // 4:查询流程定义

        ProcessDefinition processDefinition = processDefinitionQuery.processDefinitionId(processDefinitionId).singleResult();

        // 5:获取资源名称

        String resourceName = processDefinition.getResourceName();

        System.out.println("bpmn名称:" + resourceName);

        // 6:获取图片名称

        String diagramResourceName = processDefinition.getDiagramResourceName();

        System.out.println("png名称:" + diagramResourceName);

        File bpmnFile = new File("E:\\dance\\activiti7\\src\\main\\resources\\cp\\holiday.bpmn");

        File pngFile = new File("E:\\dance\\activiti7\\src\\main\\resources\\cp\\holiday.png");

        // 7:根据部署ID和资源名称获取资源流

        InputStream resourceAsStream = repositoryService.getResourceAsStream(processDefinition.getDeploymentId(), resourceName);

        // 8:创建输出流

        FileOutputStream fileOutputStream = new FileOutputStream(bpmnFile);

        // 写文件

        writeByte(resourceAsStream, fileOutputStream);

        // 获取图片

        resourceAsStream = repositoryService.getResourceAsStream(processDefinition.getDeploymentId(), diagramResourceName);

        fileOutputStream = new FileOutputStream(pngFile);

        // 写文件

        writeByte(resourceAsStream, fileOutputStream);

        System.out.println("获取资源成功!");

    }

写出流方法

private void writeByte(InputStream resourceAsStream, OutputStream fileOutputStream) throws IOException {

        int i = -1;

        byte[] content = new byte[1024];

        while ((i = resourceAsStream.read(content)) != -1) {

            fileOutputStream.write(content, 0, i);

        }

        // 释放资源

        fileOutputStream.flush();

        fileOutputStream.close();

        resourceAsStream.close();

    }

查询流程历史信息

/**

     * 获取历史信息

     */

    @Test

    public void testHistoric01() {

        // 获取历史信息Service

        HistoryService historyService = defaultProcessEngine.getHistoryService();

        // 启动的流程实例的ID

        String processInstanceId = "10001";

        // 根据流程实例ID查询 历史记录

        List<HistoricActivityInstance> list = historyService.createHistoricActivityInstanceQuery().processInstanceId(processInstanceId).orderByHistoricActivityInstanceStartTime().asc().list();

        // 输出信息

        list.forEach(historicActivityInstance -> {

            System.out.println("---------------------------------------------------");

            System.out.println("当前激活ID:" + historicActivityInstance.getActivityId());

            System.out.println("当前激活名称:" + historicActivityInstance.getActivityName());

            System.out.println("流程定义ID:" + historicActivityInstance.getProcessDefinitionId());

            System.out.println("流程实例ID:" + historicActivityInstance.getProcessInstanceId());

            System.out.println("---------------------------------------------------");

        });

    }

作者：彼岸舞

时间：2020\08\31

内容关于：Activiti工作流

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