Sails 风格路由实现：拆分控制器名与方法名动态调用

尽管所有控制器方法都能通过 controllers 对象获取，但我们无法用单个字符串动态调用它们。我们需要分别提取控制器名称和方法名称。为此，可以用点（.）字符来拆分路由定义的值。 let location = routes[route]; location = location.split("."); let controllerLocation = location[0]; let methodLocation = location[1]; 现在控制器名称和方法名称已经分开了。我们可以用它们从 controllers 对象中访问对应的控制器和方法。 let controller = controllers[controllerLocation]; let method = controller[methodLocation]; 把所有内容整合到 app.js 文件中。 const express = require("express"); const app = express(); const controllers = require("require-all")({ dirname: __dirname + "/controllers", filter: /(.+Controller).js$/, }); const routes = require("./routes"); for (let route in routes) { const verbExpr = /^(get|post|put|delete)\s+/i; const match = route.match(verbExpr); const verb = match ? match[1].toLowerCase() : null; let path = route; path = path.replace(verbExpr, ""); let location = routes[route]; location = location.split("."); let controllerLocation = location[0]; let methodLocation = location[1]; let controller = controllers[controllerLocation]; let method = controller[methodLocation]; app.listen(3000, () => { console.log("Application is up and running on port 3000"); }); 经过这些改动，我们现在有了要调用的 HTTP 方法、路由路径和控制器方法。 向 Express 注册路由只需一行代码： app[verb](path, method); 它会动态访问对应的 Express 方法，例如 app.get() 或 app.post()，并将路由路径和控制器方法作为参数传入。 把这行代码加到 app.js 文件中，就完成了可运行的 Express 应用。 const express = require("express"); const app = express(); const controllers = require("require-all")({ dirname: __dirname + "/controllers", filter: /(.+Controller).js$/, }); const routes = require("./routes"); for (let route in routes) { const verbExpr = /^(get|post|put|delete)\s+/i; const match = route.match(verbExpr); const verb = match ? match[1].toLowerCase() : null; let path = route; path = path.replace(verbExpr, ""); let location = routes[route]; location = location.split("."); let controllerLocation = location[0]; let methodLocation = location[1]; let controller = controllers[controllerLocation]; let method = controller[methodLocation]; app[verb](path, method); app.listen(3000, () => { console.log("Application is up and running on port 3000"); }); 继续重启应用。在浏览器和/或 Insomnia 中再次测试这三个路由。你应该会看到与之前相同的输出。