08.flowable 流程实例的启动

项目地址：https://gitee.com/lwj/flowable.git 分支flowable-base
视频讲解地址
https://space.bilibili.com/485524575/channel/detail?cid=94579

1、演示

2、代码

public ReturnVo<ProcessInstance> startProcessInstanceByKey(StartProcessInstanceVo params) {
        ReturnVo<ProcessInstance> returnVo = new ReturnVo<>(ReturnCode.SUCCESS, "启动成功");
        if (StringUtils.isNotBlank(params.getProcessDefinitionKey())
                && StringUtils.isNotBlank(params.getBusinessKey())
                && StringUtils.isNotBlank(params.getSystemSn())) {
            ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery().processDefinitionKey(params.getProcessDefinitionKey())
                    .latestVersion().singleResult();
            if (processDefinition != null && processDefinition.isSuspended()) {
                returnVo = new ReturnVo<>(ReturnCode.FAIL, "此流程已经挂起,请联系系统管理员!");
                return returnVo;
            }
            /**
             * 1、设置变量
             * 1.1、设置提交人字段为空字符串让其自动跳过
             * 1.2、设置可以自动跳过
             * 1.3、汇报线的参数设置
             */
            //1.1、设置提交人字段为空字符串让其自动跳过
            params.getVariables().put(FlowConstant.FLOW_SUBMITTER_VAR, "");
            //1.2、设置可以自动跳过
            params.getVariables().put(FlowConstant.FLOWABLE_SKIP_EXPRESSION_ENABLED, true);
            // TODO 1.3、汇报线的参数设置
            //2、当我们流程创建人和发起人
            String creator = params.getCreator();
            if (StringUtils.isBlank(creator)) {
                creator = params.getCurrentUserCode();
                params.setCreator(creator);
            }
            //3.启动流程
            identityService.setAuthenticatedUserId(creator);
            ProcessInstance processInstance = runtimeService.createProcessInstanceBuilder()
                    .processDefinitionKey(params.getProcessDefinitionKey().trim())
                    .name(params.getFormName().trim())
                    .businessKey(params.getBusinessKey().trim())
                    .variables(params.getVariables())
                    .tenantId(params.getSystemSn().trim())
                    .start();
            returnVo.setData(processInstance);
            //4.添加审批记录
            this.addComment(params.getCurrentUserCode(), processInstance.getProcessInstanceId(),
                    CommentTypeEnum.TJ.toString(), params.getFormName() + "提交");
            //5.TODO 推送消息数据
        } else {
            returnVo = new ReturnVo<>(ReturnCode.FAIL, "请填写 这三个字段 ProcessDefinitionKey,BusinessKey,SystemSn");
        }
        return returnVo;
    }