TypeScript multer类代码示例

function getBodyParser(config: JsonBodyOptions | FileBodyOptions): RequestHandler {
    if (!config) return DEFAULT_JSON_PARSER;

    if (config.type === 'json') {
        return bodyParser.json(config);
    }
    else if (config.type == 'files') {
        const fConfig = config as FileBodyOptions;

        // validate config object
        if (typeof fConfig.field !== 'string') throw new TypeError(`'field' is undefined in file body options`);
        if (!fConfig.limits) throw new TypeError(`'limits' are undefined in file body options`);
        if (typeof fConfig.limits.size !== 'number' || typeof fConfig.limits.count !== 'number')
            throw new TypeError(`'limits' are invalid in file body options`);

        // build middleware
        const uploader = multer({
            storage: fConfig.storage || multer.memoryStorage(),
            limits: {
                files   : fConfig.limits.count,
                fileSize: fConfig.limits.size
            }
        }).array(fConfig.field);

        return function(request, response, next) {
            uploader(request, response, function (error) {
                if (error) {
                    const code: string = (error as any).code;
                    if (typeof code === 'string' && code.startsWith('LIMIT')) {
                        error = new Exception({ message: 'Upload failed', cause: error, status: HttpStatusCode.InvalidInputs });
                    }
                }
                next(error);
            });
        };
    }
    else if (config.type === 'multipart') {
        const bConfig = config as MultipartBodyOptions;

        const uploader = multer({
            storage : bConfig.storage || multer.memoryStorage(),
            limits  : bConfig.limits
        }).any();

        return function(request, response, next) {
            uploader(request, response, function (error) {
                if (error) {
                    const code: string = (error as any).code;
                    if (typeof code === 'string' && code.startsWith('LIMIT')) {
                        error = new Exception({ message: 'Request failed', cause: error, status: HttpStatusCode.InvalidInputs });
                    }
                }
                next(error);
            });
        };
    }
    else {
        throw new TypeError(`Body type '${config.type}' is not supported`);
    }
}

endpoints.forEach(endpoint =>
	endpoint.withFile ?
		app.post('/' + endpoint.name,
			endpoint.withFile ? multer({ dest: 'uploads/' }).single('file') : null,
			require('./api-handler').default.bind(null, endpoint)) :
		app.post('/' + endpoint.name,
			require('./api-handler').default.bind(null, endpoint))

  start() {
    let app: express.Express = express();
    app.use('/', express.static('public'));
    var upload: multer.Instance = multer(); // for parsing multipart/form-data

    //Server Middlewares configuration part
    app.use(allowCrossDomain);
    app.use(cookieParser()); // read cookies (needed for auth)
    app.use(bodyParser.json()); // for parsing application/json
    app.use(bodyParser.urlencoded({ extended: true })); // for parsing application/x-www-form-urlencoded
    app.use(expressSession({secret: 'swcmi'}));

    

    //To use passport 
    app.use(passport.initialize());
    app.use(passport.session()); // persistent login sessions

    //start router
    this.apiRouter.init(app);


    //port
    app.listen(10000, function () {
      console.log('SuWon church API Server listening on port 10000!')
    });

  }

 private registerParsers() {
     // configure app to use bodyParser()
     // this will let us get the data from a POST
     this.app.use(bodyParser.urlencoded({ extended: true }));  // for parsing application/x-www-form-urlencoded
     this.app.use(bodyParser.json()); // for parsing application/json
     this.app.use(multer().any()); // for parsing multipart/form-data
 }

function createReqFiles (
  fieldNames: string[],
  mimeTypes: { [ id: string ]: string },
  destinations: { [ fieldName: string ]: string }
) {
  const storage = multer.diskStorage({
    destination: (req, file, cb) => {
      cb(null, destinations[file.fieldname])
    },

    filename: async (req, file, cb) => {
      const extension = mimeTypes[file.mimetype]
      let randomString = ''

      try {
        randomString = await generateRandomString(16)
      } catch (err) {
        logger.error('Cannot generate random string for file name.', err)
        randomString = 'fake-random-string'
      }

      cb(null, randomString + extension)
    }
  })

  const fields = []
  for (const fieldName of fieldNames) {
    fields.push({
      name: fieldName,
      maxCount: 1
    })
  }

  return multer({ storage }).fields(fields)
}

describe("Laod simple service rest", function() {

  let app = express();
  app.use(bodyParser.urlencoded({extended : false}));
  app.use(multer().array());  
  ServiceLoader.loadService(app, new serviceTest());

  it("should return a get", function(done) {

    request(app)
    .get("/one/1")
    .expect('{"id":"1","method":"get"}', done);
  });

  it("should return a post", function(done) {

    request(app)
    .post("/one")
    .field("id", 11)
    .expect('{"id":"11","method":"post"}', done);
  });

  it("should return a delete", function(done) {

    request(app)
    .delete("/one/2")
    .expect('{"id":"2","method":"delete"}', done);
  });

  it("should return a put", function(done) {

    request(app)
    .put("/one/3")
    .expect('{"id":"3","method":"put"}', done);
  });

  it("should return a patch", function(done) {

    request(app)
    .patch("/one/4")
    .expect('{"id":"4","method":"patch"}', done);
  });
});

/// <reference path="tsd.d.ts" />

import * as express from 'express'
import * as multer from 'multer'
import * as path from 'path';
import * as fs from 'fs';
import * as db from 'db';
import * as bodyParser from 'body-parser'
import {config} from 'config';
import {api as dapi} from 'discourse'
var upload = multer({ dest: config.uploadPath })

var app = express()
app.use(bodyParser.urlencoded({ extended: false }))
app.use(express.static('public'));


app.post('/postImg', upload.single('img'), function (req, res, next) {
    var tmpFile = path.join(__dirname, req.file.path);
    fs.rename(tmpFile, tmpFile + '.jpg', function () {
        res.json({ url: config.webAccessUploadURI + req.file.filename + '.jpg' });
    })
})

app.post('/post', function (req, res, next) {
    console.log(req.body);
    var doc = req.body;
    db.posts.loadDatabase();

    db.posts.insert(doc, function (err, newDoc) {   // Callback is optional
        if (err) {

                  not_submitted: responses[1]
                });
              });
            });
        });
    });
});

const upload = multer({
  limits: {
    fileSize: 1000000
  },
  storage: multerS3({
    acl: "public-read",
    bucket: "famjam",
    contentType: (req, file, cb) => {
      cb(null, "image/jpeg");
    },
    key: (req, file, cb) => {
      cb(null, uuid.v4());
    },
    s3: s3
  })
});

api.post("/topics/:id", authorizeToken, upload.single("photo"), (req, res) => {
  new Image({
    _creator: (req.authenticatedUser as IUser)._id,
    _topic: req.params["id"],
    description: req.body["description"],
    url: (req.file as any).location
  }).save((err, image: IImage) => {

import * as express from 'express'
import * as bodyParser from 'body-parser'
import * as multer from 'multer'
import * as path from 'path'
import route from '../route'
import reqRoute from './reqRoute'

const port: number = 8989

const app: any = express()
const upload: any = multer()

const server = app.listen(port, ():void=> {
  console.log(`http://localhost:${port}`)
})

const filePath = (fileName: string): string => {
  return path.join(__dirname + '/../data/' + fileName)
}

app.use(bodyParser.json({ limit: '50mb' }))
app.use(bodyParser.urlencoded({ extended: true }))
app.use(express.static('./dist'))

app.get('*', async (req: any,res: any) => {
  let data: any = await route(req)
  if( data.type === 'data'){
    res.send(data.data)
  } else {
    res.sendFile(filePath(await reqRoute(req.path)))
    // res.sendFile(filePath(data))

// MONGO CONFIG
const MongoClient = mongodb.MongoClient;
const ObjectId = mongodb.ObjectID;
const dbUrl = (config.dbUser && config.dbPwd) ? ('mongodb://' + config.dbUser + ':' + config.dbPwd + '@' + config.dbUrl) : ('mongodb://' + config.dbUrl);

// BCRYPT CONFIG
const saltRounds:number = 8;

// MULTER CONFIG
// AVATARS
const avtrUpload = multer({
  storage: multer.diskStorage({
    destination: (req, file, cb) => {
      cb(null, config.avtrPath)
    },
    filename: (req, file, cb) => {
      let ext = path.extname(file.originalname);
      cb(null, `${Math.random().toString(36).substring(7)}${ext}`);
    }
  })
});
// IMAGES
const imgUpload = multer({
  storage: multer.diskStorage({
    destination: (req, file, cb) => {
      cb(null, config.imgPath)
    },
    filename: (req, file, cb) => {
      let ext = path.extname(file.originalname);
      cb(null, `${Math.random().toString(36).substring(7)}${ext}`);
    }