增加 BpmUserTaskActivitiBehavior 自定义实现，为后续做自定义的任务分配机制做准备

yudao-admin-server/src/main/java/cn/iocoder/yudao/adminserver/modules/bpm/framework/activiti/BpmActivitiConfiguration.java

@@ -1,26 +0,0 @@
-package cn.iocoder.yudao.adminserver.modules.bpm.framework.activiti;
-
-import cn.iocoder.yudao.adminserver.modules.bpm.service.task.listener.BpmTackActivitiEventListener;
-import org.activiti.spring.SpringProcessEngineConfiguration;
-import org.activiti.spring.boot.ProcessEngineConfigurationConfigurer;
-import org.springframework.context.annotation.Configuration;
-
-import javax.annotation.Resource;
-import java.util.Collections;
-
-/**
- * BPM 模块的 Activiti 配置类
- */
-@Configuration
-public class BpmActivitiConfiguration implements ProcessEngineConfigurationConfigurer {
-
-    @Resource
-    private BpmTackActivitiEventListener taskActivitiEventListener;
-
-    @Override
-    public void configure(SpringProcessEngineConfiguration configuration) {
-        // 注册监听器，例如说 BpmActivitiEventListener
-        configuration.setEventListeners(Collections.singletonList(taskActivitiEventListener));
-    }
-
-}

yudao-admin-server/src/main/java/cn/iocoder/yudao/adminserver/modules/bpm/framework/activiti/config/BpmActivitiConfiguration.java

@@ -0,0 +1,51 @@
+package cn.iocoder.yudao.adminserver.modules.bpm.framework.activiti.config;
+
+import cn.iocoder.yudao.adminserver.modules.bpm.framework.activiti.core.behavior.BpmActivityBehaviorFactory;
+import cn.iocoder.yudao.adminserver.modules.bpm.framework.activiti.core.listener.BpmTackActivitiEventListener;
+import org.activiti.spring.boot.ProcessEngineConfigurationConfigurer;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import java.util.Collections;
+
+import static org.activiti.spring.boot.ProcessEngineAutoConfiguration.BEHAVIOR_FACTORY_MAPPING_CONFIGURER;
+
+/**
+ * BPM 模块的 Activiti 配置类
+ */
+@Configuration
+public class BpmActivitiConfiguration {
+
+    /**
+     * BPM 模块的 ProcessEngineConfigurationConfigurer 实现类，主要设置各种监听器
+     */
+    @Bean
+    public ProcessEngineConfigurationConfigurer bpmProcessEngineConfigurationConfigurer(
+            BpmTackActivitiEventListener taskActivitiEventListener) {
+        return configuration -> {
+            // 注册监听器，例如说 BpmActivitiEventListener
+            configuration.setEventListeners(Collections.singletonList(taskActivitiEventListener));
+        };
+    }
+
+    /**
+     * 用于设置自定义的 ActivityBehaviorFactory 实现的 ProcessEngineConfigurationConfigurer 实现类
+     *
+     * 目的：覆盖 {@link org.activiti.spring.boot.ProcessEngineAutoConfiguration} 的
+     *      defaultActivityBehaviorFactoryMappingConfigurer 方法创建的 Bean
+     */
+    @Bean(name = BEHAVIOR_FACTORY_MAPPING_CONFIGURER)
+    public ProcessEngineConfigurationConfigurer defaultActivityBehaviorFactoryMappingConfigurer(
+            BpmActivityBehaviorFactory bpmActivityBehaviorFactory) {
+        return configuration -> {
+            // 设置 ActivityBehaviorFactory 实现类，用于流程任务的审核人的自定义
+            configuration.setActivityBehaviorFactory(bpmActivityBehaviorFactory);
+        };
+    }
+
+    @Bean
+    public BpmActivityBehaviorFactory bpmActivityBehaviorFactory() {
+        return new BpmActivityBehaviorFactory();
+    }
+
+}

yudao-admin-server/src/main/java/cn/iocoder/yudao/adminserver/modules/bpm/framework/activiti/core/behavior/BpmActivityBehaviorFactory.java

@@ -0,0 +1,31 @@
+package cn.iocoder.yudao.adminserver.modules.bpm.framework.activiti.core.behavior;
+
+import cn.iocoder.yudao.adminserver.modules.bpm.framework.activiti.core.behavior.BpmUserTaskActivitiBehavior;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
+import org.activiti.bpmn.model.UserTask;
+import org.activiti.engine.impl.bpmn.behavior.UserTaskActivityBehavior;
+import org.activiti.engine.impl.bpmn.parser.factory.DefaultActivityBehaviorFactory;
+
+/**
+ * 自定义的 ActivityBehaviorFactory 实现类，目的如下：
+ * 1. 自定义 {@link #createUserTaskActivityBehavior(UserTask)}：实现自定义的流程任务的 assignee 负责人的分配
+ *
+ * @author 芋道源码
+ */
+@Data
+@EqualsAndHashCode(callSuper = true)
+@ToString(callSuper = true)
+public class BpmActivityBehaviorFactory extends DefaultActivityBehaviorFactory {
+
+    @Override
+    public UserTaskActivityBehavior createUserTaskActivityBehavior(UserTask userTask) {
+        return new BpmUserTaskActivitiBehavior(userTask);
+    }
+
+    // TODO 芋艿：并行任务 ParallelMultiInstanceBehavior
+
+    // TODO 芋艿：并行任务 SequentialMultiInstanceBehavior
+
+}

yudao-admin-server/src/main/java/cn/iocoder/yudao/adminserver/modules/bpm/framework/activiti/core/behavior/BpmUserTaskActivitiBehavior.java

@@ -0,0 +1,31 @@
+package cn.iocoder.yudao.adminserver.modules.bpm.framework.activiti.core.behavior;
+
+import org.activiti.bpmn.model.UserTask;
+import org.activiti.engine.delegate.DelegateExecution;
+import org.activiti.engine.impl.bpmn.behavior.UserTaskActivityBehavior;
+import org.activiti.engine.impl.el.ExpressionManager;
+import org.activiti.engine.impl.persistence.entity.TaskEntity;
+import org.activiti.engine.impl.persistence.entity.TaskEntityManager;
+
+import java.util.List;
+
+/**
+ * 自定义的流程任务的 assignee 负责人的分配
+ *
+ * @author 芋道源码
+ */
+public class BpmUserTaskActivitiBehavior extends UserTaskActivityBehavior {
+
+    public BpmUserTaskActivitiBehavior(UserTask userTask) {
+        super(userTask);
+    }
+
+    @Override
+    protected void handleAssignments(TaskEntityManager taskEntityManager,
+                                     String assignee, String owner, List<String> candidateUsers, List<String> candidateGroups,
+                                     TaskEntity task, ExpressionManager expressionManager, DelegateExecution execution) {
+        System.out.println("");
+        taskEntityManager.changeTaskAssignee(task, "1");
+    }
+
+}

yudao-admin-server/src/main/java/cn/iocoder/yudao/adminserver/modules/bpm/framework/activiti/core/listener/BpmProcessInstanceEventListener.java

@@ -1,4 +1,4 @@
-package cn.iocoder.yudao.adminserver.modules.bpm.service.task.listener;
+package cn.iocoder.yudao.adminserver.modules.bpm.framework.activiti.core.listener;
 
 import cn.iocoder.yudao.adminserver.modules.bpm.dal.dataobject.task.BpmProcessInstanceExtDO;
 import cn.iocoder.yudao.adminserver.modules.bpm.service.task.BpmProcessInstanceService;

yudao-admin-server/src/main/java/cn/iocoder/yudao/adminserver/modules/bpm/framework/activiti/core/listener/BpmTackActivitiEventListener.java

@@ -1,4 +1,4 @@
-package cn.iocoder.yudao.adminserver.modules.bpm.service.task.listener;
+package cn.iocoder.yudao.adminserver.modules.bpm.framework.activiti.core.listener;
 
 import cn.hutool.core.util.StrUtil;
 import cn.iocoder.yudao.adminserver.modules.bpm.service.definition.BpmProcessDefinitionService;

yudao-admin-server/src/main/java/cn/iocoder/yudao/adminserver/modules/bpm/framework/activiti/core/listener/BpmTaskEventListener.java

@@ -1,10 +1,14 @@
-package cn.iocoder.yudao.adminserver.modules.bpm.service.task.listener;
+package cn.iocoder.yudao.adminserver.modules.bpm.framework.activiti.core.listener;
 
 import cn.iocoder.yudao.adminserver.modules.bpm.dal.dataobject.task.BpmTaskExtDO;
 import cn.iocoder.yudao.adminserver.modules.bpm.service.task.BpmTaskService;
+import org.activiti.api.model.shared.event.RuntimeEvent;
+import org.activiti.api.process.model.ProcessInstance;
+import org.activiti.api.process.model.events.ProcessRuntimeEvent;
 import org.activiti.api.task.model.Task;
 import org.activiti.api.task.model.events.TaskRuntimeEvent;
 import org.activiti.api.task.runtime.events.listener.TaskEventListener;
+import org.activiti.api.task.runtime.events.listener.TaskRuntimeEventListener;
 import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Component;
 
@@ -16,15 +20,22 @@ import javax.annotation.Resource;
  * @author 芋道源码
  */
 @Component
-public class BpmTaskEventListener<T extends TaskRuntimeEvent<? extends Task>>
+public class BpmTaskEventListener<T extends RuntimeEvent<?, ?>>
-        implements TaskEventListener<T> {
+        implements TaskRuntimeEventListener<T> {
 
     @Resource
     @Lazy // 解决循环依赖
     private BpmTaskService taskService;
 
     @Override
-    public void onEvent(T event) {
+    @SuppressWarnings("unchecked")
+    public void onEvent(T rawEvent) {
+        // 由于 TaskRuntimeEventListener 无法保证只监听 TaskRuntimeEvent 事件，所以通过这样的方式
+        if (!(rawEvent instanceof TaskRuntimeEvent)) {
+            return;
+        }
+        TaskRuntimeEvent<Task> event = (TaskRuntimeEvent<Task>) rawEvent;
+
         // 创建时，插入拓展表
         if (event.getEventType() == TaskRuntimeEvent.TaskEvents.TASK_CREATED) {
             taskService.createTaskExt(event.getEntity());

yudao-admin-server/src/main/java/cn/iocoder/yudao/adminserver/modules/bpm/service/model/impl/BpmModelServiceImpl.java

@@ -15,8 +15,11 @@ import cn.iocoder.yudao.framework.common.util.json.JsonUtils;
 import cn.iocoder.yudao.framework.common.util.object.PageUtils;
 import cn.iocoder.yudao.framework.common.util.validation.ValidationUtils;
 import lombok.extern.slf4j.Slf4j;
+import org.activiti.bpmn.converter.BpmnXMLConverter;
+import org.activiti.bpmn.model.BpmnModel;
 import org.activiti.engine.RepositoryService;
 import org.activiti.engine.impl.persistence.entity.SuspensionState;
+import org.activiti.engine.impl.util.io.StringStreamSource;
 import org.activiti.engine.repository.Deployment;
 import org.activiti.engine.repository.Model;
 import org.activiti.engine.repository.ModelQuery;
@@ -27,6 +30,8 @@ import org.springframework.util.ObjectUtils;
 import org.springframework.validation.annotation.Validated;
 
 import javax.annotation.Resource;
+import javax.xml.stream.XMLInputFactory;
+import javax.xml.stream.XMLStreamReader;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
@@ -211,4 +216,11 @@ public class BpmModelServiceImpl implements BpmModelService {
         }
     }
 
+//    public static void main(String[] args) {
+//        // 创建转换对象
+//        BpmnXMLConverter converter = new BpmnXMLConverter();
+//        BpmnModel bpmnModel = converter.convertToBpmnModel(new StringStreamSource(""), true, true);
+//        bpmnModel.getProcesses()
+//    }
+
 }

yudao-admin-server/src/main/java/cn/iocoder/yudao/adminserver/modules/bpm/service/task/impl/BpmProcessInstanceServiceImpl.java

@@ -87,8 +87,8 @@ public class BpmProcessInstanceServiceImpl implements BpmProcessInstanceService
         runtimeService.setProcessInstanceName(instance.getId(), definition.getName());
 
         // TODO 芋艿：临时使用, 保证分配
-        List<Task> tasks = taskService.getTasksByProcessInstanceId(instance.getId());
+//        List<Task> tasks = taskService.getTasksByProcessInstanceId(instance.getId());
-        tasks.forEach(task -> taskService.updateTaskAssign(task.getId(), userId));
+//        tasks.forEach(task -> taskService.updateTaskAssign(task.getId(), userId));
 
         // 添加初始的评论 TODO 芋艿：在思考下
 //        Task task = taskService.createTaskQuery().processInstanceId(instance.getId()).singleResult();