预检测

frontend/src/views/home/components/deviceConnectionPopup.vue

@@ -144,7 +144,29 @@ const handleConnect = (params: any) => {
     ElMessage.warning('只能从被检通道连接到标准通道')
     return
   }
+
+   // 过滤掉当前连接，检查是否还有重复的
+  const existingEdges = edges.value.filter(edge => 
+    edge.source === params.source || edge.target === params.target
+  );
   
+  // 如果同源或同目标的连接超过1个，说明有重复
+  if (existingEdges.length > 1) {
+    const duplicateSource = existingEdges.filter(edge => edge.source === params.source).length > 1;
+    const duplicateTarget = existingEdges.filter(edge => edge.target === params.target).length > 1;
+    
+    if (duplicateSource) {
+      removeEdge(params);
+      ElMessage.warning('该被检通道已经连接，不能重复连接');
+      return;
+    }
+    
+    if (duplicateTarget) {
+      removeEdge(params);
+      ElMessage.warning('该标准通道已经连接，不能重复连接');
+      return;
+    }
+  }
 }
 
 // 删除不合法连接