调整目录结构

bin/router.js

@@ -0,0 +1,37 @@
+const fs = require("fs")
+function addMapping(router, mapping) {
+    for (var url in mapping) {
+        if (url.startsWith('GET ')) {
+            var path = url.substring(4);
+            router.get(path, mapping[url]);
+            console.log(`register URL mapping: GET ${path}`);
+        } else if (url.startsWith('POST ')) {
+            var path = url.substring(5);
+            router.post(path, mapping[url]);
+            console.log(`register URL mapping: POST ${path}`);
+        } else {
+            console.log(`invalid URL: ${url}`);
+        }
+    }
+}
+
+function addControllers(router,controllers_dir) {
+    var files = fs.readdirSync(__dirname +"/"+ controllers_dir);
+    var js_files = files.filter((f) => {
+        return f.endsWith('.js');
+    });
+
+    for (var f of js_files) {
+        console.log(`process controller: ${f}...`);
+        let mapping = require(__dirname + `/${controllers_dir}/` + f);
+        addMapping(router, mapping);
+    }
+}
+module.exports = function (dir) {
+    let
+        controllers_dir = dir || 'controllers', // 如果不传参数，扫描目录默认为'controllers'
+        router = require('koa-router')();
+    addControllers(router, controllers_dir);
+    return router.routes();
+    // return 1;
+};