first commit

Author: island99

backend/all.js

@@ -0,0 +1,19 @@
+var username = neo4j;
+var password = 000000;
+
+function allnodesPromise(query) {
+    return new Promise((resolve, reject) => {
+        // console.log(resolve);
+        var neo4j = require('node-neo4j');
+        db = new neo4j(`http://${username}:${password}@localhost:7474`);
+        db.cypherQuery(query, function(err, result) {
+            if (err) {
+                reject(err);
+            }
+
+            resolve(result);
+        });
+    });
+}
+module.exports.allnodesPromise = allnodesPromise
+    // module.exports.allnodes=allnodes	localhost:7687

backend/index.js

@@ -0,0 +1,74 @@
+const Koa = require('koa');
+const router = require('koa-router')();
+const app = new Koa();
+const all = require('./all');
+
+const os = require('os');
+
+var cors = require('koa2-cors'); // CORS是一个W3C标准，全称是"跨域资源共享"
+app.use(cors());
+
+var myHost = '';
+
+function getIPAdd() {
+    var ifaces = os.networkInterfaces();
+    for (var dev in ifaces) {
+        //将'WLAN'替换为系统所处网络
+        if (dev.includes('WLAN')) {
+            break;
+        }
+    }
+    ifaces[dev].forEach(function(details) {
+        if (details.family == 'IPv4') {
+            var adr = details.address
+                // console.log(adr)
+            myHost = adr;
+            return adr;
+
+        }
+    });
+}
+getIPAdd();
+
+router.get('/all', (ctx, next) => {
+    // console.log(myHost);
+    var client_list = new Set();
+    var clientHost = ctx.req.connection.remoteAddress.slice(7, );
+    // console.log(ctx.req.connection.remoteAddress.slice(7, ));
+
+    // console.log(client_list);
+    // console.log(ctx.req.headers.origin);
+    // 从主页访问的情况
+    if (ctx.req.headers.origin) {
+        if (client_list.has(clientHost) == false) {
+            client_list.add(clientHost);
+        }
+        query = ctx.query;
+        // console.log(ctx.query);
+    }
+    // 本机访问3000
+    else if (clientHost.includes(myHost) | clientHost == '::1') {
+        console.log(clientHost + '正在访问3000端口并请求');
+        query = ctx.query;
+
+    } else {
+        console.log(clientHost + '正在访问3000端口并请求，已返回空');
+        query = { query: 'MATCH (n:Error) RETURN n' };
+    }
+
+    // console.log(query);
+    return all.allnodesPromise(query.query).then(nodes => {
+        ctx.body = nodes
+    })
+});
+app.use(async(ctx, next) => {
+    try {
+        await next();
+    } catch (e) {
+        console.log(e)
+    }
+});
+
+app.use(router.routes());
+app.use(router.allowedMethods());
+app.listen(3000, getIPAdd());

favicon.ico

@@ -0,0 +1,88 @@
+function random(l, u) {
+    return Math.floor(Math.random() * (u - l + 1)) + l
+}
+
+function nodesFoldToD3(d) {
+    let data;
+    // console.log('nodesFoldToD3_2,data',d.data)
+    data = d.data;
+
+    var nodes = [];
+    var relationships = [];
+    var nodeset = new Set();
+    var relset = new Set();
+    // console.log(data);
+    for (let name in data) {
+        var project = data[name];
+        console.log(project);
+        var nodenums = [0, 4, 8]
+        nodenums.forEach(n => {
+            if (project[n] == null || nodeset.has(project[n]['_id'])) {} else {
+                nodeset.add(project[n]['_id']);
+                // console.log(nodeset)
+                var node = {};
+                node['id'] = project[n]['_id'].toString();
+                project[n + 1] = project[n + 1].filter((x) => x !== '');
+                // console.log('project[n+1]',project[n+1]);
+                if (project[n + 1][0] == 'Person')
+                    node['label'] = project[n]['name']
+                else if (project[n + 1][0] == 'Movie') {
+                    node['label'] = project[n]['title']
+                }
+
+
+                // console.log(node);
+                var proper = {};
+                proper['type'] = project[n + 1][0];
+                // console.log(proper['type']);
+                for (let pro in project[n]) {
+                    {
+                        proper[pro] = project[n][pro];
+                    }
+
+                    node['properties'] = proper;
+                }
+
+                nodes.push(node);
+            }
+        })
+
+
+
+        if (project[2] == null || relset.has(project[2]['_id'])) {} else {
+            var relation = {}
+            relset.add(project[2]['_id']);
+            // relation['id']=project[2]['_id'].toString();
+            relation['label'] = project[3];
+            relation['source'] = project[0]['_id'].toString();
+            relation['target'] = project[4]['_id'].toString();
+            // relation['linknum']=1;
+            relationships.push(relation);
+        };
+        if (project[6] == null || relset.has(project[6]['_id'])) {
+            // console.log(relset)
+        } else {
+            var relation = {}
+            relset.add(project[6]['_id']);
+            // relation['id']=project[6]['_id'].toString();
+            relation['label'] = project[7];
+            relation['source'] = project[4]['_id'].toString();
+            relation['target'] = project[8]['_id'].toString();
+            // relation['linknum']=1;
+            relationships.push(relation);
+        }
+    }
+    // console.log('nodes',nodes.length)
+    if (nodes.length == 0) {
+        var alert = 1;
+        return alert;
+    }
+    var content = {
+
+            'nodes': nodes,
+            'edges': relationships
+
+        }
+        // console.log(content)
+    return JSON.stringify(content)
+}