Activiti6-FormService（学习笔记）重要

设置流程定义文件：

<?xml version="1.0" encoding="UTF-8"?>

<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:activiti="http://activiti.org/bpmn"
    xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC"
    xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema"
    expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/test">

    <process id="my-process">
        <!--startEvent/userTask都可以配置的表单项-->
        <!-- 1.activiti:formKey指定表单的key，也就是一个url，获取到这个值以后，
        后端可以设置一些算法，和逻辑，解析出所定义的模板 -->
        <startEvent id="start" activiti:formKey="/rest/process/form/start">
            <!--扩展属性，设置表单内容-->
            <extensionElements>
                <activiti:formProperty id="message" name="信息" type="string" required="true"/>
            </extensionElements>
        </startEvent>

        <sequenceFlow id="flow1" sourceRef="start" targetRef="someTask" />

        <userTask id="someTask" name="Activiti is awesome!"
                  activiti:formKey="/rest/process/form/userTask">
            <extensionElements>
                <activiti:formProperty id="yesORno" name="审批" type="string" required="true"/>
            </extensionElements>
        </userTask>
        <sequenceFlow id="flow2" sourceRef="someTask" targetRef="end" />

        <endEvent id="end" />

    </process>

</definitions>

编写测试类：

public class FormServiceTest {
    private static final Logger LOGGER =  LoggerFactory.getLogger(FormServiceTest.class);

    @Rule
    public ActivitiRule activitiRule = new ActivitiRule();

    @Test
    @Deployment(resources = {"my-process-form.bpmn20.xml"})//部署定义文件
    public void testFormService(){
        FormService formService = activitiRule.getFormService();
        //获取流程定义文件
        ProcessDefinition processDefinition = activitiRule.getRepositoryService().createProcessDefinitionQuery().singleResult();

        //用formService获取前面在流程定义文件里的内容
        //获取startFormKey
        String startFormKey = formService.getStartFormKey(processDefinition.getId());
        LOGGER.info("startFormKey = {}",startFormKey);
        //获取表单内容（区分start还是task表单）,要先获取FromData，然后从中解析出表单的数量跟列表
        StartFormData startFormData = formService.getStartFormData(processDefinition.getId());
        //通过startFormData获取表单集合、列表
        List<FormProperty> formProperties = startFormData.getFormProperties();
        for (FormProperty formProperty : formProperties) {
            LOGGER.info("formProperty = {}",ToStringBuilder.reflectionToString(formProperty,ToStringStyle.JSON_STYLE));
        }
        //获取task内容.这里用到的getTaskFormData()需要获取TaskID但是只有流程启
        // 动后运行到Task才会有TaskID，所以在这里需要启动流程
        //假装一个表单提交需要用到的内容
        Map<String,String> properties = Maps.newHashMap();
        properties.put("message","my test message");
        //用提交表单的方式 启动流程
        ProcessInstance processInstance = formService.submitStartFormData(processDefinition.getId(), properties);
        //Task就会生成了，接着获取Task
        Task task = activitiRule.getTaskService().createTaskQuery().singleResult();
        //接着就可以获取Task表单了
        TaskFormData taskFormData = formService.getTaskFormData(task.getId());
        List<FormProperty> taskFormDataFormProperties = taskFormData.getFormProperties();
        for (FormProperty property : taskFormDataFormProperties) {
            LOGGER.info("property = {}",ToStringBuilder.reflectionToString(property,ToStringStyle.JSON_STYLE));
        }
        //让表单继续执行
        // 这里Task里的yesORno设的是必填属性，所以必须给予其值
        HashMap<String,String> properties1 = Maps.newHashMap();
        properties1.put("yesORno","yes");
        formService.submitTaskFormData(task.getId(),properties1);
        //查询一下表单是否还存在
        Task task1 = activitiRule.getTaskService().createTaskQuery().taskId(task.getId()).singleResult();
        LOGGER.info("task1 = {}",task1);

    }

}

测试结果如下：

ProcessEngine default created
startFormKey = /rest/process/form/start
formProperty = {"id":"message","name":"\u4FE1\u606F","type":"org.activiti.engine.impl.form.StringFormType@352c308","isRequired":true,"isReadable":true,"isWritable":true,"value":null}
property = {"id":"yesORno","name":"\u5BA1\u6279","type":"org.activiti.engine.impl.form.StringFormType@352c308","isRequired":true,"isReadable":true,"isWritable":true,"value":null}
task1 = null