Express-annotator

installation

run command npm install express-annotator

javascript

create file server.js and write to it:

const Routes = require("express-annotator");
const app    = Routes.initApp({port: 3000});

@Routes.Handler()
class Greeting {
    @Routes.Get()
    onGreet(@Params.response() res, 
            @Params.query("name") userSurname = "World") {
        res.send("Hello " + userSurname);
    }
}
Routes.startApp()

run command node server.js

Visit localhost:3000 and you should see text Hello World.

Visit localhost:3000/?name=Pinocchio and you should see text Hello Pinocchio.

Typescript

create file server.ts and write to it:

import { Routes, Params } from "express-annotator";
import * as express from "express";

const app: express.Application = Routes.initApp({port: 3000});

@Routes.Handler()
class Greeting {
    @Routes.Get()
    public onGreet(@Params.response() res: express.Response, 
                   @Params.query("name") userSurname = "World"): void {
        res.send("Hello " + userSurname);
    }
}

run command tsc server.ts

run command node server.js

Visit localhost:3000 and you should see text Hello World.

Visit localhost:3000/?name=Pinocchio and you should see text Hello Pinocchio.

Route methods

Route

Basic method to create handler for specific route and method

Get

Annotation create simple get handler for route given as parameter

parameters

• path - path to handler relative to parent paths. Default value is /

Post

Annotation create simple post handler for route given as parameter

parameters

• path - path to handler relative to parent paths. Default value is /

Put

Annotation create simple put handler for route given as parameter

parameters

• path - path to handler relative to parent paths. Default value is /

Delete

Annotation create simple delete handler for route given as parameter

parameters

• path - path to handler relative to parent paths. Default value is /

SendFile

Method create handler which send content of specific file to client as response

parameters

• fileName - name of file to send

Auth

Method turn on/off authentication for specific route. This method can also set authentication method.

parameters

• authentication - set what method could be used for authentication. Default value is true
  • true - for authentication use global authentication settings
  • false - authentication for this method is switched off
  • (request: express.Request) => boolean - method that returns true if user has valid access rights otherwise returns false

Cookie

Method set cookie to client

parameters

• key - cookie name
• value - cookie value
• options - advanced options for cookie
  • maxAge - maximal time for cookie
  • path - path where cookie will be stored

Redirect

Method redirect each request send to this route to path given as parameter.

parameters

• destination - url to which the user is redirected
• onlyRedirect - if true then ends after redirect otherwise continue to execute method. Default value is true

DownloadFile

Method send file for download to client

parameters

• filePath - path to file on server
• fileName - default filename used by system visible in download window

Parameter methods

query

To this parameter will contains value from query parameter. For example Params.query("name") will have after visit localhost:3000/?name=Pinocchio value Pinocchio

parameters

• name - name of the query variable to be associated with the parameter variable

pathVariable

Path variables are stored in url just after the colon. For example Params.pathVariable("userName") will have after visit localhost:3000/userDetail/Pinocchio (route /userDetail:userName) value Pinocchio

parameters

• name - name of the variable to be associated with the parameter variable

cookie

To parameter annotated by this method will have value of corresponding cookie.

parameters

• name - name of the cookie to be associated with the variable

header

To parameter annotated by this method will have value of corresponding header.

parameters

• name - name of the header to be associated with the variable

body

This annotation put in the following parameter request body

parameters

• format - optional parameter use for parsing body. Allowed formats are JSON, XML, HTML, SVG

request

Annotate following parameter as express.Request object

response

Annotate following parameter as express.Response object