SpringBoot整合Flowable工作流-2（代码整合

发表于

  1. 前言

上一篇博客【SpringBoot整合Flowable工作流-1（画流程定义） 】介绍用 Flowable-ui 画了一个简单的流程图。

这篇博客将介绍代码整合部分，主要内容有：【发布流程定义】、【开启流程任务】、【获取用户任务】、【用户审批任务】、【添加审批意见】、【获取流程图】、【获取我的待办任务】、【获取我发起的流程】、【我审批过的流程】…

  1. 代码添加依赖

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xml复制代码<dependency>
    <groupId>org.flowable</groupId>
    <artifactId>flowable-spring-boot-starter</artifactId>
    <version>6.4.2</version>
</dependency>

  1. 创建数据库

创建数据库可以使用通过 Flowable 提供的 sql 实现，也可以通过程序自动创建数据库实现

3.1 Flowable 提供的 sql

下载文件 Flowable 相关的资源，进入 flowable.com/open-source…，然后点击 【Download Flowable v6.x.x】，下载下来是一个压缩包，解压后会看到如下目录结构

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python复制代码└─database                                   # 数据库文件
    └─create
        └─all
            └─flowable.mysql.all.create.sql

找到 $/database/create/database/create/flowable.mysql.all.create.sql 文件，导入mysql数据库即可

3.2 应用程序自动创建数据库（推荐）

需要在 jdbc 的 url 中添加一个参数值，nullCatalogMeansCurrent=true

如下：

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ini复制代码jdbc:mysql://127.0.0.1:3306/flowable?allowMultiQueries=true&useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai&useSSL=false&nullCatalogMeansCurrent=true

  1. 代码部分

4.1 常用的几个Service类

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java复制代码/** 运行时Service（用于运行时流程实例、流程变量、流程节点） */
@Autowired
private RuntimeService runtimeService;
/** 资源存储Service（用于模型、流程定义） */
@Autowired
private RepositoryService repositoryService;
/** 流程引擎Service */
@Qualifier("processEngine")
@Autowired
private ProcessEngine processEngine;
/** 任务Service（用于运行时的用户任务、审批日志） */
@Autowired
private TaskService taskService;
@Autowired
protected ManagementService managementService;
/** 历史Service（用于历史记录，可以找到历史的流程实例、流程节点） */
@Autowired
protected HistoryService historyService;

4.2 流程定义相关代码

4.2.1 发布流程定义

上一篇博客【SpringBoot整合Flowable工作流-1（画流程定义） 】画好了流程，然后下载下来是一个 “请假流程1.bpmn20.xml” 的xml文件，下载就可以通过代码把这个流程发布到流程定义中了。

代码如下

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java复制代码 @Override
public boolean importProcessDefinition(MultipartFile file) {
    try {
        Deployment deployment = repositoryService.createDeployment()
                // .key()
                // .name(name)
                // .category(category)
                // .tenantId()
                // 通过压缩包的形式一次行多个发布
                // .addZipInputStream()
                // 通过InputStream的形式发布
                .addInputStream(file.getOriginalFilename(), file.getInputStream())
                // 通过存放在classpath目录下的文件进行发布
                // .addClasspathResource("p1.bpmn20.xml")
                // 通过xml字符串的形式
                // .addString()
                .deploy();
        ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery().deploymentId(deployment.getId()).singleResult();
        if (processDefinition == null) {
            return false;
        }
    } catch (Exception e) {
        throw new BusinessException("导入流程定义失败：" + e.getMessage());
    }
    return true;
}

基于 SpringBoot 发布流程定义，还有一种巧妙的形式，那就是在 resources 目录下建立一个文件夹 processes ，然后把对应的流程文件发到这个文件夹下即可，启动 SpringBoot 项目的时候，通过观察日志就会发现该流程就自动发布了。（不推荐）

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css复制代码workflow-server
  └─src
     └─main
         ├─java
         └─resources
             ├─mapper
             └─processes
                 └─请假流程1.bpmn20.xml

4.2.2 查询流程定义

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java复制代码// 创建 ProcessDefinitionQuery 
ProcessDefinitionQuery processDefinitionQuery = repositoryService.createProcessDefinitionQuery();
// 根据流程定义ID
// processDefinitionQuery.processDefinitionId(requestDTO.getId());
// 根据流程定义Key
// processDefinitionQuery.processDefinitionKeyLike("%" + requestDTO.getKey().trim() + "%");
// 根据流程定义名称
// processDefinitionQuery.processDefinitionNameLike("%" + requestDTO.getName().trim() + "%");
//
// 获取总数
long count = processDefinitionQuery.count();
// 获取单个 
ProcessDefinition processDefinition = processDefinitionQuery.singleResult();
// 获取列表
List<ProcessDefinition> processDefinitions = processDefinitionQuery.list();
// 获取分页
List<ProcessDefinition> processDefinitions = processDefinitionQuery.listPage(0, 10)

4.2.3 获取流程定义xml

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java复制代码public String getXmlResource(String id) {
     ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery().processDefinitionId(id).singleResult();
     InputStream inputStream = repositoryService.getResourceAsStream(processDefinition.getDeploymentId(),
                                                                     processDefinition.getResourceName());
     try {
         return IOUtils.toString(inputStream, StandardCharsets.UTF_8);
     } catch (Exception e) {
         throw new BusinessException("获取资源失败：" + e.getMessage());
     } finally {
         try {
             IOUtils.close(inputStream, null);
         } catch (IOException ignored) {
         }
     }
}

4.2.4 获取流程定义图片

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java复制代码public String getDiagramImageResource(String id) {
    // 理论上我用这种形式也是行的，但是我获取出来会有乱码，我也比较奇怪，所以换了通过 bpmnModel 的方式
    // ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery().processDefinitionId(id).singleResult();
    // InputStream inputStream = repositoryService.getResourceAsStream(processDefinition.getDeploymentId(),
    //                                                                 processDefinition.getDiagramResourceName());
    // 获取bpmnModel对象
    BpmnModel bpmnModel = repositoryService.getBpmnModel(id);
    // 生成图片流
    ProcessEngineConfiguration configuration = processEngine.getProcessEngineConfiguration();
    ProcessDiagramGenerator diagramGenerator = configuration.getProcessDiagramGenerator();
    InputStream inputStream = diagramGenerator.generateDiagram(bpmnModel, "png", Collections.emptyList(),
                                                               Collections.emptyList(), "宋体", "宋体", "宋体",
                                                               this.getClass().getClassLoader(), 1.0, true);
    try {
        return "data:image/png;base64," + Base64.encode(inputStream);
    } catch (Exception e) {
        throw new BusinessException("获取资源失败：" + e.getMessage());
    } finally {
        try {
            IOUtils.close(inputStream, null);
        } catch (IOException ignored) {
        }
    }
}

4.2.5 删除流程定义

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java复制代码public void deleteByIds(List<String> ids) {
     List<ProcessDefinition> processDefinitions = repositoryService.createProcessDefinitionQuery().processDefinitionIds(new HashSet<>(ids)).list();
     // repositoryService.deleteDeployment(String deploymentId, boolean cascade)
     // 删除给定的部署和级联删除流程实例、历史流程实例和作业。
     processDefinitions.forEach(v -> repositoryService.deleteDeployment(v.getDeploymentId(), true));
 }

4.3 流程实例相关代码

4.3.1 添加流程实例审批意见

起到类似于记录流程的操作记录的作用，我这里是自己封装了一层，我封装了自己的业务用户ID、用户名、执行类型、意见内容…

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java复制代码@Data
@ApiModel("流程实例-审批意见请求参数")
public class ProcessInstanceCommentRequestDTO implements Serializable {

    @ApiModelProperty(value = "流程定义Key")
    private String processInstanceId;
    @ApiModelProperty(value = "任务ID（缺省）")
    private String taskId;
    @ApiModelProperty(value = "类型 CommentEntity: event/comment")
    private String type;

    @ApiModelProperty(value = "用户ID")
    private String userId;
    @ApiModelProperty(value = "用户昵称")
    private String nickname;
    @ApiModelProperty(value = "执行类型")
    private String executeType;
    @ApiModelProperty(value = "执行类型（参考ExecuteTypeEnum）SUBMIT-提交;YES-同意;NO-拒绝;STOP-流程终止;DELETE-流程删除")
    private String executeTypeValue;
    @ApiModelProperty(value = "内容")
    private String content;
    @ApiModelProperty(value = "额外携带的内容")
    private String ext;
}

添加流程实例审批意见

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java复制代码// 添加流程实例审批记录
public void addProcessInstanceComment(ProcessInstanceCommentRequestDTO requestDTO) {
    CommentWrapper wrapper = new CommentWrapper();
    wrapper.setUserId(requestDTO.getUserId());
    wrapper.setNickname(requestDTO.getNickname());
    wrapper.setExecuteType(requestDTO.getExecuteType());
    wrapper.setExecuteTypeValue(requestDTO.getExecuteTypeValue());
    wrapper.setContent(requestDTO.getContent());
    wrapper.setExt(requestDTO.getExt());
    String message = JSON.toJSONString(wrapper);
    // 使用 taskService 添加一条审批意见
    taskService.addComment(requestDTO.getTaskId(), requestDTO.getProcessInstanceId(), requestDTO.getType(), message);
}

4.3.2 启动流程实例

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java复制代码@Data
@ApiModel("流程实例-启动请求参数")
public class ProcessInstanceStartRequestDTO implements Serializable {

    @ApiModelProperty(value = "流程定义Key")
    @NotEmpty(message = "流程定义Key 不可以为空")
    private String processDefinitionKey;
    @ApiModelProperty(value = "流程实例名称")
    @NotEmpty(message = "流程实例名称 不可以为空")
    private String name;
    @ApiModelProperty(value = "项目ID")
    @NotEmpty(message = "项目ID 不可以为空")
    private String communityId;
    @ApiModelProperty(value = "全局变量")
    private Map<String, Object> variables;

}

启动流程实例

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java复制代码@Transactional(rollbackFor = Exception.class)
public ProcessInstanceStartResponseDTO startProcessInstance(ProcessInstanceStartRequestDTO requestDTO) {
    ValidatorUtils.validate(requestDTO);
    //
    ProcessDefinitionQuery processDefinitionQuery = repositoryService.createProcessDefinitionQuery();
    processDefinitionQuery.processDefinitionKey(requestDTO.getProcessDefinitionKey());
    ProcessDefinition processDefinition = processDefinitionQuery.latestVersion().singleResult();
    AssertUtils.notEmpty(processDefinition, "找不到流程定义");
    // 启动流程
    ProcessInstanceBuilder builder = runtimeService.createProcessInstanceBuilder();
    builder.processDefinitionKey(requestDTO.getProcessDefinitionKey());
    builder.name(requestDTO.getName());
    // variables("name", "value") 
    // 可以添加流程过程的变量，比如这里我添加了我不少业务变量进来，方面流程流转的时候处理业务
    builder.variables(requestDTO.getVariables());
    builder.variable(VAR_COMMUNITY_ID, VAR_COMMUNITY_ID_EQ + requestDTO.getCommunityId());
    builder.variable(VAR_PROCESS_INSTANCE_NAME, VAR_PROCESS_INSTANCE_NAME_EQ + requestDTO.getName());
    builder.variable(VAR_CREATE_USER_ID, VAR_CREATE_USER_ID_EQ + SecurityUser.getUserId());
    builder.variable(VAR_CREATE_USER_NICKNAME, VAR_CREATE_USER_NICKNAME_EQ + SecurityUser.get().getName());
    builder.variable(VAR_PROCESS_DEFINITION_NAME, VAR_PROCESS_DEFINITION_NAME_EQ + processDefinition.getName());
    builder.transientVariables(requestDTO.getTransientVariables());
    // builder.tenantId("101");
    ProcessInstance processInstance = builder.start();
    // 添加审批意见
    ProcessInstanceCommentRequestDTO commentRequestDTO = new ProcessInstanceCommentRequestDTO();
    commentRequestDTO.setProcessInstanceId(processInstance.getProcessInstanceId());
    commentRequestDTO.setTaskId(null);
    commentRequestDTO.setUserId(SecurityUser.getUserId());
    commentRequestDTO.setNickname(SecurityUser.get().getName());
    commentRequestDTO.setExecuteType(ExecuteTypeEnum.SUBMIT.name());
    commentRequestDTO.setExecuteTypeValue(ExecuteTypeEnum.SUBMIT.getValue());
    commentRequestDTO.setContent(requestDTO.getName() + " 提交流程");
    commentRequestDTO.setExt("");
    this.addProcessInstanceComment(commentRequestDTO);
    // 构建 ResponseDTO
    ProcessInstanceStartResponseDTO responseDTO = new ProcessInstanceStartResponseDTO();
    responseDTO.setProcessInstanceId(processInstance.getProcessInstanceId());
    responseDTO.setProcessDefinitionId(processInstance.getProcessDefinitionId());
    responseDTO.setProcessDefinitionKey(processInstance.getProcessDefinitionKey());
    responseDTO.setProcessDefinitionName(processInstance.getProcessDefinitionName());
    responseDTO.setName(processInstance.getName());
    responseDTO.setBusinessKey(processInstance.getBusinessKey());
    responseDTO.setDescription(processInstance.getDescription());
    //
    return responseDTO;
}

4.3.3 获取流程进度图片

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java复制代码public String getProcessImage(String processInstanceId) {
    // 1.获取当前的流程实例
    ProcessInstance processInstance = runtimeService.createProcessInstanceQuery().processInstanceId(processInstanceId).singleResult();
    String processDefinitionId;
    List<String> activeActivityIds = new ArrayList<>();
    List<String> highLightedFlows = new ArrayList<>();
    // 2.获取所有的历史轨迹线对象
    List<HistoricActivityInstance> historicActivityInstances = historyService.createHistoricActivityInstanceQuery()
            .processInstanceId(processInstanceId).activityType(BpmnXMLConstants.ELEMENT_SEQUENCE_FLOW).list();
    historicActivityInstances.forEach(historicActivityInstance -> highLightedFlows.add(historicActivityInstance.getActivityId()));
    // 3. 获取流程定义id和高亮的节点id
    if (processInstance != null) {
        // 3.1 正在运行的流程实例
        processDefinitionId = processInstance.getProcessDefinitionId();
        activeActivityIds = runtimeService.getActiveActivityIds(processInstanceId);
    } else {
        // 3.2 已经结束的流程实例
        HistoricProcessInstance historicProcessInstance = historyService.createHistoricProcessInstanceQuery()
                .processInstanceId(processInstanceId).singleResult();
        processDefinitionId = historicProcessInstance.getProcessDefinitionId();
        // 3.3 获取结束节点列表
        List<HistoricActivityInstance> historicEnds = historyService.createHistoricActivityInstanceQuery()
                .processInstanceId(processInstanceId).activityType(BpmnXMLConstants.ELEMENT_EVENT_END).list();
        List<String> finalActiveActivityIds = activeActivityIds;
        historicEnds.forEach(historicActivityInstance -> finalActiveActivityIds.add(historicActivityInstance.getActivityId()));
    }
    // 4. 获取bpmnModel对象
    BpmnModel bpmnModel = repositoryService.getBpmnModel(processDefinitionId);
    // 5. 生成图片流
    ProcessEngineConfiguration configuration = processEngine.getProcessEngineConfiguration();
    ProcessDiagramGenerator diagramGenerator = configuration.getProcessDiagramGenerator();
    InputStream inputStream = diagramGenerator.generateDiagram(bpmnModel, "png", activeActivityIds,
                                                               highLightedFlows, "宋体", "宋体", "宋体",
                                                               this.getClass().getClassLoader(), 1.0, true);
    // 6. 转化成Base64网络传输
    return "data:image/png;base64," + Base64.encode(inputStream);
}

4.3.4 获取流程审批意见

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java复制代码@Override
public List<ProcessInstanceCommentResponseDTO> findProcessInstanceCommentList(String processInstanceId) {
    List<Comment> processInstanceComments = taskService.getProcessInstanceComments(processInstanceId);
    List<ProcessInstanceCommentResponseDTO> list = processInstanceComments.stream()
            .map(this::convertComment)
            .filter(Objects::nonNull).collect(Collectors.toList());
    return list;
}

private ProcessInstanceCommentResponseDTO convertComment(Comment v) {
    String fullMessage = v.getFullMessage();
    if (StringUtils.startsWith(fullMessage, "{")) {
        CommentWrapper wrapper = JSON.parseObject(fullMessage, CommentWrapper.class);
        ProcessInstanceCommentResponseDTO responseDTO = new ProcessInstanceCommentResponseDTO();
        responseDTO.setProcessInstanceId(v.getProcessInstanceId());
        responseDTO.setType(v.getType());
        responseDTO.setTaskId(v.getTaskId());
        responseDTO.setTime(v.getTime());
        responseDTO.setUserId(wrapper.getUserId());
        responseDTO.setNickname(wrapper.getNickname());
        responseDTO.setExecuteType(wrapper.getExecuteType());
        responseDTO.setExecuteTypeValue(wrapper.getExecuteTypeValue());
        responseDTO.setContent(wrapper.getContent());
        responseDTO.setExt(wrapper.getExt());
        return responseDTO;
    }
    return null;
}

4.3.5 流程实例执行下一步

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java复制代码@Data
@ApiModel("流程实例-执行下一步请求参数")
public class ProcessInstanceExecuteNextStepRequestDTO implements Serializable {

    @ApiModelProperty(value = "流程实例ID")
    @NotEmpty(message = "流程实例ID 不可以为空")
    private String processInstanceId;
    @ApiModelProperty(value = "任务ID")
    private String taskId;
    @ApiModelProperty(value = "ExecuteTypeEnum 执行类型")
    @NotEmpty(message = "执行类型 不可以为空")
    private String executeType;
    @ApiModelProperty(value = "审批意见")
    @NotEmpty(message = "审批意见 不可以为空")
    private String commentContent;
    @ApiModelProperty(value = "变量参数")
    private HashMap<String, Object> variables;

}
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java复制代码@Transactional(rollbackFor = Exception.class)
public void executeNextStep(ProcessInstanceExecuteNextStepRequestDTO requestDTO) {
    ValidatorUtils.validate(requestDTO);
    //
    if (ExecuteTypeEnum.of(requestDTO.getExecuteType()).isNone()) {
        throw new BusinessException("未知执行状态");
    }
    TaskQuery taskQuery = taskService.createTaskQuery();
    taskQuery.taskId(requestDTO.getTaskId());
    Task task = taskQuery.singleResult();
    AssertUtils.notEmpty(task, "找不到任务");
    //
    // 添加审批意见
    ProcessInstanceCommentRequestDTO commentRequestDTO = new ProcessInstanceCommentRequestDTO();
    commentRequestDTO.setProcessInstanceId(task.getProcessInstanceId());
    commentRequestDTO.setTaskId(task.getId());
    // commentRequestDTO.setType("event");
    commentRequestDTO.setUserId(SecurityUser.getUserId());
    commentRequestDTO.setNickname(SecurityUser.get().getName());
    commentRequestDTO.setExecuteType(requestDTO.getExecuteType());
    commentRequestDTO.setExecuteTypeValue(ExecuteTypeEnum.of(requestDTO.getExecuteType()).getValue());
    commentRequestDTO.setContent(task.getName() + "：" + requestDTO.getCommentContent());
    commentRequestDTO.setExt("");
    //
    this.addProcessInstanceComment(commentRequestDTO);
    // 处理流程审批
    HashMap<String, Object> variables = requestDTO.getVariables();
    if (variables == null) {
        variables = new HashMap<>(8);
    }
    // 这里会put一个执行变量executeType,也就是流程定义xml中的那个变量名称，这个变量决定了流程再走向
    variables.put(WorkflowConstants.EXECUTE_TYPE, requestDTO.getExecuteType());
    // 添加执行人
    variables.put("_execute_user_id=" + SecurityUser.getUserId(), "_execute_user_id=" + SecurityUser.getUserId());
    taskService.complete(task.getId(), variables);
}

4.3.6 终止流程实例

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java复制代码@Data
@ApiModel("流程实例-分页请求参数")
public class ProcessInstanceStopRequestDTO implements Serializable {

    @ApiModelProperty(value = "流程实例ID")
    @NotEmpty(message = "流程实例ID 不可以为空")
    private String processInstanceId;
    @ApiModelProperty(value = "审批意见")
    @NotEmpty(message = "审批意见 不可以为空")
    private String commentContent;

}
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java复制代码public void stopProcessInstance(ProcessInstanceStopRequestDTO requestDTO) {
    ValidatorUtils.validate(requestDTO);
    // 修改流转执行状态
    runtimeService.setVariable(requestDTO.getProcessInstanceId(), WorkflowConstants.EXECUTE_TYPE, ExecuteTypeEnum.STOP.name());
    //
    ProcessInstance processInstance = runtimeService.createProcessInstanceQuery()
            .processInstanceId(requestDTO.getProcessInstanceId()).singleResult();
    // 添加一条审批记录
    ProcessInstanceCommentRequestDTO commentRequestDTO = new ProcessInstanceCommentRequestDTO();
    commentRequestDTO.setProcessInstanceId(processInstance.getProcessInstanceId());
    commentRequestDTO.setTaskId(null);
    commentRequestDTO.setUserId(SecurityUser.getUserId());
    commentRequestDTO.setNickname(SecurityUser.get().getName());
    commentRequestDTO.setExecuteType(ExecuteTypeEnum.STOP.name());
    commentRequestDTO.setExecuteTypeValue(ExecuteTypeEnum.STOP.getValue());
    commentRequestDTO.setContent(StringUtils.defaultString(requestDTO.getCommentContent(), "终止流程"));
    commentRequestDTO.setExt("");
    this.addProcessInstanceComment(commentRequestDTO);
    /// 执行终止
    List<Execution> executions = runtimeService.createExecutionQuery().parentId(requestDTO.getProcessInstanceId()).list();
    List<String> executionIds = executions.stream().map(v -> v.getId()).collect(Collectors.toList());
    // 获取流程结束点
    BpmnModel bpmnModel = repositoryService.getBpmnModel(processInstance.getProcessDefinitionId());
    Process process = bpmnModel.getMainProcess();
    List<EndEvent> endNodes = process.findFlowElementsOfType(EndEvent.class);
    String endId = endNodes.get(endNodes.size() - 1).getId();
    // 执行跳转
    runtimeService.createChangeActivityStateBuilder()
            .moveExecutionsToSingleActivityId(executionIds, endId)
            .changeState();
}

4.3.7 批量获取流程实例变量列表

这个方法是自定义实现的，因为 Flowable 没有对应的根据流程实例ID列表获取批量的流程变量

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java复制代码/**
 * 实例映射 Flowable 的 act_hi_varinst 表
 */
@Data
public class HistoryVariable implements Serializable {

    public static final HistoryVariable EMPTY = new HistoryVariable();

    private String id;
    private String rev;
    private String processInstanceId;
    private String executionId;
    private String taskId;
    private String name;
    private String varType;
    private String scopeId;
    private String subScopeId;
    private String scopeType;
    private String bytearrayId;
    private Double doubleValue;
    private Long longValue;
    private String text;
    private String text2;
    private Date createTime;
    private Date lastUpdatedTime;

    /*
    act_hi_varinst 字段列表：
    ID_
    REV_
    PROC_INST_ID_
    EXECUTION_ID_
    TASK_ID_
    NAME_
    VAR_TYPE_
    SCOPE_ID_
    SUB_SCOPE_ID_
    SCOPE_TYPE_
    BYTEARRAY_ID_
    DOUBLE_
    LONG_
    TEXT_
    TEXT2_
    CREATE_TIME_
    LAST_UPDATED_TIME_
     */
}

Service

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java复制代码@Override
public List<HistoryVariable> findHistoryVariableList(Collection<String> processInstanceIds) {
    if (CollectionUtils.isEmpty(processInstanceIds)) {
        return Collections.emptyList();
    }
    QueryWrapper<HistoryVariable> ew = new QueryWrapper<>();
    ew.in("t.PROC_INST_ID_", processInstanceIds);
    return this.baseMapper.findHistoryVariableList(ew);
}

Dao

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java复制代码List<HistoryVariable> findHistoryVariableList(@Param("ew") QueryWrapper<HistoryVariable> ew);

xml

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xml复制代码<select id="findHistoryVariableList" resultType="cn.leadersheep.xz.workflow.server.entity.flowable.HistoryVariable">
    SELECT
    t.ID_ AS id,
    t.REV_ AS rev,
    t.PROC_INST_ID_ AS process_instance_id,
    t.EXECUTION_ID_ AS execution_id,
    t.TASK_ID_ AS task_id,
    t.NAME_ AS name,
    t.VAR_TYPE_ AS var_type,
    t.SCOPE_ID_ AS scope_id,
    t.SUB_SCOPE_ID_ AS sub_scope_id,
    t.SCOPE_TYPE_ AS scope_type,
    t.BYTEARRAY_ID_ AS bytearray_id,
    t.DOUBLE_ AS double_value,
    t.LONG_ AS long_value,
    t.TEXT_ AS text,
    t.TEXT2_ AS text2,
    t.CREATE_TIME_ AS create_time,
    t.LAST_UPDATED_TIME_ AS last_update_time

    FROM act_hi_varinst t
    <where>
        ${ew.sqlSegment}
    </where>
</select>

4.3.8 获取流程实例分页

获取流程实例分页，因为这里涉及到数据权限过滤、以及待办、已办、历史记录、我发起等等，逻辑还是挺复杂的，因此简单通过Flowable的API可能不是一个很好的选择了，因此这里自定义实现，通过查找Flowable相关的数据库表找出符合记录

1.如果流程实例还在进行中数据是保存在 act_ru_* 这几张表中，如果流程实例结束了数据是保存在 act_hi_* 这几张表中，因此查询的时候需要根据不用场景查询不用的表；
2.流程定义图中定义的分配的用户组，保存在 act_ru_identitylink 表中；

流程实例-分页请求参数

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java复制代码@Data
@EqualsAndHashCode(callSuper = true)
@ApiModel("流程实例-分页请求参数")
public class ProcessInstancePageRequestDTO extends PageParamsEntity {

    @ApiModelProperty(value = "项目ID")
    private String communityId;
    @ApiModelProperty(value = "查找范围：MY_TODO-我的待办；MY_DONE-我的已办；MY_SCOPE-我的范围；MY_CREATE-我的创建；")
    private String searchScope;
    @ApiModelProperty(value = "任务名称")
    private String processInstanceName;

}

流程定义-分页响应结果

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java复制代码@Data
@ApiModel("流程定义-分页响应结果")
public class ProcessInstancePageResponseDTO implements Serializable {

    @ApiModelProperty(value = "项目ID")
    private String communityId;
    @ApiModelProperty(value = "项目名称")
    private String communityName;
    @ApiModelProperty(value = "流程实例ID")
    private String processInstanceId;
    @ApiModelProperty(value = "流程实例名称")
    private String processInstanceName;
    @ApiModelProperty(value = "流程定义ID")
    private String processDefinitionId;
    @ApiModelProperty(value = "流程定义名称")
    private String processDefinitionName;
    @ApiModelProperty(value = "任务ID")
    private String taskId;
    @ApiModelProperty(value = "任务名称")
    private String taskName;
    @ApiModelProperty(value = "开始时间")
    private Date startTime;
    @ApiModelProperty(value = "结束时间")
    private Date endTime;
    @ApiModelProperty(value = "持续时间")
    private String duration;
    @ApiModelProperty(value = "创建人ID")
    private String createId;
    @ApiModelProperty(value = "创建人名称")
    private String createName;

}

Service

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java复制代码public PageDTO<ProcessInstancePageResponseDTO> findPage(ProcessInstancePageRequestDTO requestDTO) {
    // 在这里实现数据过滤
    String filterSql = StringUtils.defaultString(processFilterSQL("TEXT_", requestDTO.getCommunityId(), true), "");
    filterSql = filterSql.replace("('", "('" + WorkflowConstants.VAR_COMMUNITY_ID_EQ);
    filterSql = filterSql.replace(", '", ", '" + WorkflowConstants.VAR_COMMUNITY_ID_EQ);
    // TEXT_ IN ('_community_id=1545645315843546', '_community_id=15456453158436521')
    // System.out.println("filterSQL = " + filterSQL);
    //
    PageDTO<ProcessInstancePageResponseDTO> page = this.buildPage(requestDTO);
    if ("MY_TODO".equals(requestDTO.getSearchScope())) {
        // 我的待办
        QueryWrapper<ProcessInstancePageResponseDTO> ew = buildEmptyQueryWrapper();
        ew.like(StringUtils.isNotEmpty(requestDTO.getProcessInstanceName()), "t4.NAME_", requestDTO.getProcessInstanceName());
        ew.eq("1", 1);
        ew.apply(CoreUtil.isNotEmpty(filterSql), "t3." + filterSql);
        ew.orderByDesc("t.CREATE_TIME_");
        ew.groupBy("t.PROC_INST_ID_");
        //
        if (!AuthHelper.isRoleSuperAdmin(SecurityUser.current().getRoleCodeSet())) {
            // 不是超级管理员,需要过滤
            ew.and(and -> and.in("t2.GROUP_ID_", SecurityUser.current().getRoleCodeSet()).or(or -> {
                or.eq("t2.USER_ID_", SecurityUser.getUserId());
            }));
        }
        page = this.baseMapper.findMyTodo(page, ew);
    } else if ("MY_DONE".equals(requestDTO.getSearchScope())) {
        // 我的已办
        QueryWrapper<ProcessInstancePageResponseDTO> ew = buildEmptyQueryWrapper();
        ew.like(StringUtils.isNotEmpty(requestDTO.getProcessInstanceName()), "t.NAME_", requestDTO.getProcessInstanceName());
        ew.eq("t2.TEXT_", "_execute_user_id=" + SecurityUser.getUserId());
        ew.apply(filterSql.length() > 0, "t3." + filterSql);
        ew.orderByDesc("t.START_TIME_");
        ew.groupBy("t.ID_");
        //
        page = this.baseMapper.findMyDonePage(page, ew);
    } else if ("MY_SCOPE".equals(requestDTO.getSearchScope())) {
        // 我的范围
        QueryWrapper<ProcessInstancePageResponseDTO> ew = buildEmptyQueryWrapper();
        ew.like(StringUtils.isNotEmpty(requestDTO.getProcessInstanceName()), "t.NAME_", requestDTO.getProcessInstanceName());
        ew.eq("1", 1);
        ew.apply(filterSql.length() > 0, "t4." + filterSql);
        ew.orderByDesc("t.START_TIME_");
        ew.groupBy("t.ID_");
        //
        if (!AuthHelper.isRoleSuperAdmin(SecurityUser.current().getRoleCodeSet())) {
            // 不是超级管理员,需要过滤
            ew.and(and -> and.in("t3.GROUP_ID_", SecurityUser.current().getRoleCodeSet()).or(or -> {
                or.eq("t3.USER_ID_", SecurityUser.getUserId());
            }));
        }
        page = this.baseMapper.findMyScopePage(page, ew);
    } else if ("MY_CREATE".equals(requestDTO.getSearchScope())) {
        // 我发起的
        QueryWrapper<ProcessInstancePageResponseDTO> ew = buildEmptyQueryWrapper();
        ew.like(StringUtils.isNotEmpty(requestDTO.getProcessInstanceName()), "t.NAME_", requestDTO.getProcessInstanceName());
        ew.eq("t2.TEXT_", "_create_user_id=" + SecurityUser.getUserId());
        ew.apply(filterSql.length() > 0, "t3." + filterSql);
        ew.orderByDesc("t.START_TIME_");
        ew.groupBy("t.ID_");
        //
        page = this.baseMapper.findMyDonePage(page, ew);
    }
    //
    if (CollectionUtils.isNotEmpty(page.getRecords())) {
	    // 填充其他属性
        List<String> processInstanceIds = page.getRecords().stream().map(v -> v.getProcessInstanceId()).distinct().collect(Collectors.toList());
        List<HistoryVariable> variableList = this.findHistoryVariableList(processInstanceIds);
        Map<String, HistoryVariable> variableMap = variableList.stream()
                .collect(Collectors.toMap(v -> v.getProcessInstanceId() + "_" + v.getName(), v -> v));
        page.getRecords().forEach(v -> {
            String prefix = v.getProcessInstanceId() + "_";
            //
            HistoryVariable variable = variableMap.getOrDefault(prefix + VAR_COMMUNITY_ID, HistoryVariable.EMPTY);
            String text = Optional.ofNullable(variable.getText()).map(t -> t.replace(VAR_COMMUNITY_ID_EQ, "")).orElse(null);
            v.setCommunityId(text);
            //
            // variable = variableMap.getOrDefault(prefix + VAR_PROCESS_INSTANCE_NAME, HistoryVariable.EMPTY);
            // text = Optional.ofNullable(variable.getText()).map(t -> t.replace(VAR_PROCESS_INSTANCE_NAME_EQ, "")).orElse(null);
            // v.setProcessInstanceName(text);
            //
            variable = variableMap.getOrDefault(prefix + VAR_CREATE_USER_ID, HistoryVariable.EMPTY);
            text = Optional.ofNullable(variable.getText()).map(t -> t.replace(VAR_CREATE_USER_ID_EQ, "")).orElse(null);
            v.setCreateId(text);
            //
            variable = variableMap.getOrDefault(prefix + VAR_CREATE_USER_NICKNAME, HistoryVariable.EMPTY);
            text = Optional.ofNullable(variable.getText()).map(t -> t.replace(VAR_CREATE_USER_NICKNAME_EQ, "")).orElse(null);
            v.setCreateName(text);
            //
            variable = variableMap.getOrDefault(prefix + VAR_PROCESS_DEFINITION_NAME, HistoryVariable.EMPTY);
            text = Optional.ofNullable(variable.getText()).map(t -> t.replace(VAR_PROCESS_DEFINITION_NAME_EQ, "")).orElse(null);
            v.setProcessDefinitionName(text);
        });
        sysOrganizationRemote.fillOrganization(page.getRecords(), v -> v.getCommunityId(), (v, c) -> v.setCommunityName(c.getName()));
    }
    return page;
}

Dao

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java复制代码/**
 * 获取我的待办任务
 *
 * @author houyu for.houyu@qq.com <br>
 * @param page 分页
 * @param ew 参数包装器
 * @return PageDTO<ProcessInstancePageResponseDTO>
 */
PageDTO<ProcessInstancePageResponseDTO> findMyTodo(@Param("page") PageDTO<ProcessInstancePageResponseDTO> page, @Param("ew") QueryWrapper<ProcessInstancePageResponseDTO> ew);

/**
 * 获取我的范围内的任务
 *
 * @author houyu for.houyu@qq.com <br>
 * @param page 分页
 * @param ew 参数包装器
 * @return PageDTO<ProcessInstancePageResponseDTO>
 */
PageDTO<ProcessInstancePageResponseDTO> findMyScopePage(@Param("page") PageDTO<ProcessInstancePageResponseDTO> page, @Param("ew") QueryWrapper<ProcessInstancePageResponseDTO> ew);

/**
 * 获取我的已办（我的发起 / 我审批的）
 *
 * @author houyu for.houyu@qq.com <br>
 * @param page 分页
 * @param ew 参数包装器
 * @return PageDTO<ProcessInstancePageResponseDTO>
 */
PageDTO<ProcessInstancePageResponseDTO> findMyDonePage(@Param("page") PageDTO<ProcessInstancePageResponseDTO> page, @Param("ew") QueryWrapper<ProcessInstancePageResponseDTO> ew);

Xml

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xml复制代码<select id="findMyTodo" resultType="cn.leadersheep.xz.workflow.client.dto.flowable.response.ProcessInstancePageResponseDTO">
    SELECT
    t.ID_ AS task_id,
    t.PROC_INST_ID_ AS process_instance_id,
    t4.NAME_ AS process_instance_name,
    t.NAME_ AS task_name,
    t.PROC_DEF_ID_ as process_definition_id,
    t.CREATE_TIME_ as start_time,
    NULL as end_time

    FROM act_ru_task t
    LEFT JOIN act_ru_identitylink t2 ON t2.TASK_ID_ = t.ID_
    LEFT JOIN act_ru_variable t3 ON t3.PROC_INST_ID_ = t.PROC_INST_ID_
    LEFT JOIN act_hi_procinst t4 ON t4.PROC_INST_ID_ = t.PROC_INST_ID_
    <where>
        ${ew.sqlSegment}
    </where>
</select>

<select id="findMyScopePage" resultType="cn.leadersheep.xz.workflow.client.dto.flowable.response.ProcessInstancePageResponseDTO">
    SELECT
    t.PROC_INST_ID_ AS process_instance_id,
    t.NAME_ AS process_instance_name,
    t.PROC_DEF_ID_ as process_definition_id,
    t.START_TIME_ as start_time,
    t.END_TIME_ as end_time

    FROM act_hi_procinst t
    LEFT JOIN act_hi_taskinst t2 ON t2.PROC_INST_ID_ = t.ID_
    LEFT JOIN act_hi_identitylink t3 ON t3.TASK_ID_ = t2.ID_
    LEFT JOIN act_hi_varinst t4 ON t4.PROC_INST_ID_ = t.ID_
    <where>
        ${ew.sqlSegment}
    </where>
</select>

<select id="findMyDonePage" resultType="cn.leadersheep.xz.workflow.client.dto.flowable.response.ProcessInstancePageResponseDTO">
    SELECT
    t.PROC_INST_ID_ AS process_instance_id,
    t.NAME_ AS process_instance_name,
    t.PROC_DEF_ID_ as process_definition_id,
    t.START_TIME_ as start_time,
    t.END_TIME_ as end_time

    FROM act_hi_procinst t
    LEFT JOIN act_hi_varinst t2 ON t2.PROC_INST_ID_ = t.ID_
    LEFT JOIN act_hi_varinst t3 ON t3.PROC_INST_ID_ = t.ID_
    <where>
        ${ew.sqlSegment}
    </where>
</select>

  1. Linux部署流程图文字乱码

简单描述一下我遇到的情况，我当时是在Windows上开发的，设置流程图的字体为宋体，没有出现乱码的情况，但是我部署到Linux服务器上查看流程图的时候文字出现了乱码，然后我大概能猜到是因为缺少字体的问题（因为之前有了解过activiti流程图乱码是缺少字体的问题），所以我这次也是按照相同套路给Linux添加宋体字体就解决了。

5.1 复制Windows上的字体

进入目录：C:\Windows\Fonts 复制 “宋体 常规”到桌面上备用

5.2 Linux找出 java 位置

执行命令

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我的是在 /var/lib/jdk/jdk1.8.0_211/bin/java

5.3 复制字体文件到 jre/lib/fonts

找出了java的位置，jre 的位置在 java 的前几级目录下

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/var/lib/jdk/jdk1.8.0_211/bin/java

jre 字体目录（复制到这里）：
/var/lib/jdk/jdk1.8.0_211/jre/lib/fonts

5.4 复制字体文件到系统字体目录中（/usr/share/fonts）

这个目录可能不存在，如果不存在则自己创建出来

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5.5 重启系统

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重启系统之后，启动应用程序，即不会出现乱码的情况了，祝你好运~

上一篇博客：SpringBoot整合Flowable工作流-1（画流程定义）

基于 flowable-spring-boot-starter 整合的代码基本完成，但是感觉还是少了一点东西，流程一步一步执行下去了，什么时候执行完？现在到什么环节了？貌似我们都不太清楚，执行完了业务要怎么操作，这就要介绍一下 flowable 全局事件监听器了，下一篇博客将介绍 flowable 全局事件监听器，结合监听器实现业务的通知业务。

程序员[ 后宇 ]，是一个关注编程，热爱技术的Java后端开发者，热衷于 [ Java后端 ]，[ 数据爬虫领域 ]。不定期分享 I T 技能和干货！！欢迎关注 “IT加载中”，一个只出 干货 和 实战 的公众号。

本文转载自: 掘金

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