简介

从gns3的nodes和links接口可以分别获取到节点和连接状态

代码

package com;import cn.hutool.http.HttpResponse;
import cn.hutool.http.HttpUtil;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import org.jgrapht.Graph;
import org.jgrapht.alg.shortestpath.DijkstraShortestPath;
import org.jgrapht.graph.DefaultWeightedEdge;
import org.jgrapht.graph.SimpleWeightedGraph;
import java.util.HashMap;
import java.util.List;
import java.util.Map;/*** 使用GraphT库寻址*/
public class GraphTest {static String projectId = "133c2c67-9324-446b-acbb-9f75b0984fbe";static String nodeUrl = "http://192.168.XX.XX:3080/v2/projects/{PROJECT}/nodes";static String linkUrl = "http://192.168.XX.XX:3080/v2/projects/{PROJECT}/links";public static void main(String[] args) {Map<String, JSONArray> map = gns3Graph(projectId);JSONArray nodes = map.get("node");JSONArray links = map.get("link");// 创建图Graph<String, DefaultWeightedEdge> graph = new SimpleWeightedGraph<>(DefaultWeightedEdge.class);// 添加节点到图for (Object node : nodes) {JSONObject singleNode = JSONObject.parseObject(node.toString());String nodeId = singleNode.getString("node_id");graph.addVertex(nodeId);}// linkfor (Object link : links) {JSONObject singleLink = JSONObject.parseObject(link.toString());JSONArray nodesArray = singleLink.getJSONArray("nodes");String nodeId1 = JSONObject.parseObject(nodesArray.get(0).toString()).getString("node_id");String nodeId2 = JSONObject.parseObject(nodesArray.get(1).toString()).getString("node_id");DefaultWeightedEdge edge = graph.addEdge(nodeId1, nodeId2);graph.setEdgeWeight(edge, 1);}DijkstraShortestPath<String, DefaultWeightedEdge> dijkstraShortestPath = new DijkstraShortestPath<>(graph);// 查询两个节点，打印出最短路径List<String> shortestPath = dijkstraShortestPath.getPath("6ec43a5f-1792-43b1-8cbe-2d97d3035be9", "67da40dd-0a13-4fb8-9bf3-7b2f876fce5b").getVertexList();System.out.println(shortestPath);}private static Map<String, JSONArray> gns3Graph(String projectId) {HashMap<String, JSONArray> map = new HashMap<>();// 请求gns3，获取node和linkHttpResponse response = HttpUtil.createGet(nodeUrl.replace("{PROJECT}", projectId)).execute();String nodes = response.body();map.put("node", JSONArray.parseArray(nodes));response = HttpUtil.createGet(linkUrl.replace("{PROJECT}", projectId)).execute();String links = response.body();map.put("link", JSONArray.parseArray(links));return map;}
}