流程引擎：简化DefaultFlowEngine、DefaultFlowListener

Author: zhongxunking

flow/src/main/java/org/bekit/flow/boot/FlowEngineConfiguration.java

@@ -27,18 +27,13 @@
 @Import({EventBusConfiguration.class,
         FlowsHolder.class,
         ProcessorsHolder.class,
-        FlowTxsHolder.class})
+        FlowTxsHolder.class,
+        DefaultFlowListener.class})
 public class FlowEngineConfiguration {
 
     // 流程引擎
     @Bean
-    public FlowEngine flowEngine() {
-        return new DefaultFlowEngine();
-    }
-
-    // 默认的流程监听器
-    @Bean
-    public DefaultFlowListener defaultFlowListener() {
-        return new DefaultFlowListener();
+    public FlowEngine flowEngine(FlowsHolder flowsHolder, FlowTxsHolder flowTxsHolder) {
+        return new DefaultFlowEngine(flowsHolder, flowTxsHolder);
     }
 }

flow/src/main/java/org/bekit/flow/engine/DefaultFlowEngine.java

@@ -14,7 +14,6 @@
 import org.bekit.flow.flow.FlowsHolder;
 import org.bekit.flow.transaction.FlowTxExecutor;
 import org.bekit.flow.transaction.FlowTxsHolder;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.util.ClassUtils;
 
 import java.util.Map;
@@ -23,11 +22,16 @@
  * 流程引擎默认实现类
  */
 public class DefaultFlowEngine implements FlowEngine {
-    @Autowired
+    // 流程持有器
     private FlowsHolder flowsHolder;
-    @Autowired
+    // 流程事务持有器
     private FlowTxsHolder flowTxsHolder;
 
+    public DefaultFlowEngine(FlowsHolder flowsHolder, FlowTxsHolder flowTxsHolder) {
+        this.flowsHolder = flowsHolder;
+        this.flowTxsHolder = flowTxsHolder;
+    }
+
     @Override
     public <T> T start(String flow, T target) {
         return start(flow, target, null);

flow/src/main/java/org/bekit/flow/listener/DefaultFlowListener.java

@@ -15,23 +15,17 @@
 import org.bekit.flow.annotation.listener.FlowListener;
 import org.bekit.flow.event.FlowExceptionEvent;
 import org.bekit.flow.event.NodeDecidedEvent;
-import org.springframework.beans.factory.annotation.Autowired;
-
-import javax.annotation.PostConstruct;
 
 /**
  * 默认的流程监听器
  * （流程引擎初始化时会初始化本监听器，其作用是监听所有流程发生的事件，然后将事件转发给对应流程的特定流程监听器（@TheFlowListener））
  */
 @FlowListener
 public class DefaultFlowListener {
-    @Autowired
-    private EventBusesHolder eventBusesHolder;
     // 特定流程事件发布器
     private EventPublisher eventPublisher;
 
-    @PostConstruct
-    public void init() {
+    public DefaultFlowListener(EventBusesHolder eventBusesHolder) {
         eventPublisher = new DefaultEventPublisher(eventBusesHolder.getEventBus(TheFlowListenerType.class));
     }