formService 表单组件

act_hi_detail:动态表单字段存储

1.获取
//通过流程定义ID获取表单字段集合
StartFormData startFormData = formService. getStartFormData(processDefinitionId);

TaskFormData taskFormData = formService. getTaskFormData(taskId);// 内置表单(直接在流程中定义)
Object renderedTaskForm = formService. getRenderedTaskForm(taskId);//这个方法是返回一个纯文本的( 外置表单(一个.form结尾的文件,),可以是一个div标签)
外置表单判断:
流程启动时:boolean hasStartFormKey = processDefinition.hasStartFormKey();
流程中:TaskFormData taskFormData = formService.getTaskFormData(taskId);
boolean key = taskFormData.getFormKey()


2.任务签收
taskService.claim(taskId, userId);

//数据展示
TaskFormData taskFormData = formService.getTaskFormData(taskId);// 内置表单(直接在流程中定义)
if (taskFormData.getFormKey() != null) {
Object renderedTaskForm = formService. getRenderedTaskForm(taskId);//这个方法是返回一个纯文本的( 外置表单(一个.form结尾的文件,),可以是一个div标签)
Task task = taskService.createTaskQuery().taskId(taskId).singleResult();
mav.addObject("task", task);
mav.addObject("taskFormData", renderedTaskForm);
mav.addObject("hasFormKey", true);
} else {
mav.addObject("taskFormData", taskFormData);
}

3.自定义表单引擎
/**
 * Javascript表单字段
 *
 * @author henryyan
 */
public class JavascriptFormType extends AbstractFormType {

    @Override
    public String getName() {
        return "javascript";
    }

    @Override
    public Object convertFormValueToModelValue(String propertyValue) {
        return propertyValue;
    }

    @Override
    public String convertModelValueToFormValue(Object modelValue) {
        return (String) modelValue;
    }
}


/**
 * 自定义表单引擎
 *
 * @author henryyan
 */
public class MyFormEngine implements FormEngine {

    @Override
    public String getName() {
        return "myformengine";
    }

    @Override
    public Object renderStartForm(StartFormData startForm) {
        javax.swing.JButton jButton = new javax.swing.JButton();
        jButton.setName("My Start Form Button");
        return jButton;
    }

    @Override
    public Object renderTaskForm(TaskFormData taskForm) {
        javax.swing.JButton jButton = new javax.swing.JButton();
        jButton.setName("My Task Form Button");
        return jButton;
    }

}




自定义表单引擎 : public class MyFormEngine implements FormEngine (供C/S架构使用,eg:Swing,AWT,SWT)
Javascript表单字段: public class JavascriptFormType extends AbstractFormType
class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">




5. 提交表单字段并启动一个新的流程实例
//从请求中获取表单数据,然后启动流程
Map formValues = new HashMap();
if (hasStartFormKey) { // formkey表单
Map parameterMap = request.getParameterMap();
Set> entrySet = parameterMap.entrySet();
for (Entry entry : entrySet) {
String key = entry.getKey();
formValues.put(key, entry.getValue()[0]);
}
} else { // 动态表单
// 先读取表单字段在根据表单字段的ID读取请求参数值
StartFormData formData = formService.getStartFormData(pdid);

// 从请求中获取表单字段的值
List formProperties = formData.getFormProperties();
for (FormProperty formProperty : formProperties) {
String value = request.getParameter(formProperty.getId());
formValues.put(formProperty.getId(), value);
}
}
ProcessInstance processInstance = formService. submitStartFormData(pdid, formValues);










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