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《Koa与Node.js开发实战》第1-8章代码

Home Page: https://www.ikcamp.cn

HTML 24.18% JavaScript 49.87% CSS 25.96%

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视频地址失效

这本书里面的视频链接失效了吗，还是怎么，打不开，链接如 https://camp.qianduan.group/koa2/2/1/6

[BUG] 第7章 7.4.1有错

错误的地方

 nock('http://test.com')
            .get('/test1')

request.post('test.com/test1')

正确的地方

 nock('http://test.com')
            .post('/test1')

request.post('http://test.com/test1')

错误的代码

const should = require('chai').should();
const nock = require('nock');
//const request = require('request');
const request = require('superagent');

const foo = 'bar';
describe('request', () => {
    beforeEach(() => {
        // Nock代码
        nock('http://test.com')
            .get('/test1')
            .delay(200)
            .reply(200, { foo: 'bar' });
    }),
        it('core', (done) => {
            request.post('test.com/test1').end((err, res) => {
                res.text.should.equal('{"foo":"bar"}');
                res.body.foo.should.equal('bar');
                done();
            });
        })
});

正确的代码

const should = require('chai').should();
const nock = require('nock');
//const request = require('request');
const request = require('superagent');

const foo = 'bar';
describe('request', () => {
    beforeEach(() => {
        // Nock代码
        nock('http://www.test.com')
            .post('/test1')
            .delay(200)
            .reply(200, { foo: 'bar' });
    });
    it('core', (done) => {
        request.post(`http://www.test.com/test1`).end((err, res) => {
            res.text.should.equal('{"foo":"bar"}');
            res.body.foo.should.equal('bar');
            done(); // 显式调用这个函数,通知 Mocha 测试结束.
        });
    });
});

[BUG] 第6章/6.2.3/app.js 的const customer = ctx.body 有错

ctx.body 有错
错误代码

router.post('/customer', async (ctx, err) => {
    const customer = ctx.body
    await createCustomer(customer)
    ctx.type = jsonMIME
    ctx.body = {
        status: 0
    }
})

正确代码

router.post('/customer', async (ctx, err) => {
    const customer = ctx.request.body
    await createCustomer(customer)
    ctx.type = jsonMIME
    ctx.body = {
        status: 0
    }
})

发送数据的代码

curl --data-ascii "id=12434&name='yaoming'&sex='man'&address='Shanghai Road'&email='[email protected]'&phone='12323132123'&country='China'&city='Shanghai'" http://127.0.0.1:3000/customer

就知道了.

[BUG] 6.2.2 的define.js 代码中timestamps: false导致query.js中Product的createdAt会失败

https://github.com/ikcamp/Koa-Node.js-Web-FE-Development/blob/master/%E7%AC%AC6%E7%AB%A0/6.2.2/define.js

https://github.com/ikcamp/Koa-Node.js-Web-FE-Development/blob/master/%E7%AC%AC6%E7%AB%A0/6.2.2/query.js

示例代码书写有误

model/custom.js

1、26行fullAddress的get方法中是应该是：getDataValue 而不是 getDateValue
2、40行 sequelize.STRING 写法有误应该是：Sequelize.STRING
如上代码会导致同步数据的时候出现：Error: Unrecognized data type for field city

3、另外db/index.js中的第6行 fulladdress 和model定义中的 fullAddress 写的不一致

[BUG] 第二章第三个例子跑不通

const koa = require('koa');
const app = new koa();
const hostname = '127.0.0.1';
const port = 3000;
app.use(async ctx=>{
    await asyncFunction1(params);
    await asyncFunction2(params);
    await asyncFunction3(params);
    ctx.body='Hello World!';
});
app.listen(port);
console.log(`Server(Koa2) running at http://${hostname}:${port}/`);

访问 http://127.0.0.1:3000/ 报错

ReferenceError: asyncFunction1 is not defined
      at app.use (d:\Code\nodejs_test\koa2_002\index_koa2.js:6:5)
      at dispatch (d:\Code\nodejs_test\koa2_002\node_modules\koa-compose\index.js:42:32)
      at d:\Code\nodejs_test\koa2_002\node_modules\koa-compose\index.js:34:12
      at Application.handleRequest (d:\Code\nodejs_test\koa2_002\node_modules\koa\lib\application.js:151:12)
      at Server.handleRequest (d:\Code\nodejs_test\koa2_002\node_modules\koa\lib\application.js:133:19)
      at Server.emit (events.js:193:13)
      at parserOnIncoming (_http_server.js:680:12)
      at HTTPParser.parserOnHeadersComplete (_http_common.js:113:17)
application.js:190
  ReferenceError: asyncFunction1 is not defined
      at app.use (d:\Code\nodejs_test\koa2_002\index_koa2.js:6:5)
      at dispatch (d:\Code\nodejs_test\koa2_002\node_modules\koa-compose\index.js:42:32)
      at d:\Code\nodejs_test\koa2_002\node_modules\koa-compose\index.js:34:12
      at Application.handleRequest (d:\Code\nodejs_test\koa2_002\node_modules\koa\lib\application.js:151:12)
      at Server.handleRequest (d:\Code\nodejs_test\koa2_002\node_modules\koa\lib\application.js:133:19)
      at Server.emit (events.js:193:13)
      at parserOnIncoming (_http_server.js:680:12)
      at HTTPParser.parserOnHeadersComplete (_http_common.js:113:17)

[BUG] 第二章第二个例子跑不通

var koa= require('koa');
var app = new koa();
var hostname = '127.0.0.1';
var port = 3000;
app.use(function*(){
    yield asyncFunction1(params);
    yield asyncFunction2(params);
    yield asyncFunction3(params);
    this.body='Hello World!'    
});
var server = app.listen(port);
console.log(`Server(Koa) running at http://${hostname}:${port}/`);

运行后访问 http://127.0.0.1:3000/ 报错报错

ReferenceError: asyncFunction1 is not defined
      at Object.<anonymous> (d:\Code\nodejs_test\koa2_002\index_koa.js:6:5)
      at Generator.next (<anonymous>)
      at onFulfilled (d:\Code\nodejs_test\koa2_002\node_modules\co\index.js:65:19)
      at d:\Code\nodejs_test\koa2_002\node_modules\co\index.js:54:5
      at new Promise (<anonymous>)
      at Object.co (d:\Code\nodejs_test\koa2_002\node_modules\co\index.js:50:10)
      at converted (d:\Code\nodejs_test\koa2_002\node_modules\koa-convert\index.js:17:15)
      at dispatch (d:\Code\nodejs_test\koa2_002\node_modules\koa-compose\index.js:42:32)
      at d:\Code\nodejs_test\koa2_002\node_modules\koa-compose\index.js:34:12
      at Application.handleRequest (d:\Code\nodejs_test\koa2_002\node_modules\koa\lib\application.js:151:12)
application.js:190

[BUG] 第3章，最后一个例子的post方式的curl命令不对

错误的curl POST命令:

curl http://127.0.0.1:3000/api/login\?username\=test

正确的curl POST命令:

curl --data "username=test" "http://127.0.0.1:3000/api/login"

[BUG] 第6章 6.3.3有错

用户名连接数据库,弄了很久才解决
书中代码有问题

async function connect() {
    await mongoose.connect('mongodb://localhost/course', {
        user: 'adminUser',
        pass: 'adminPass'
    });
}

报错1

(node:812) DeprecationWarning: current URL string parser is deprecated, and will be removed in a future version. To use the new parser, pass option { useNewUrlParser: true } to MongoClient.connect.

MongoDB报错2

2019-06-15T22:41:24.853+0800 I ACCESS   [conn3] SASL SCRAM-SHA-1 authentication failed for adminUser on course from client 127.0.0.1:53152 ; UserNotFound: Could not find user adminUser@course

改成

async function connect() {
    await mongoose.connect('mongodb://localhost/course?authSource=admin', {
        useNewUrlParser: true,
        user: 'adminUser',
        pass: 'adminPass'
    });
}

就可以了.

关于6.3.3节的建议

《koa 与 nodejs》一书中第六章数据库6.3.3节代码不全，看得云里雾里的，上github才发现原来漏掉了代码中重要的部分。
1.文件的开头应该说明这个是哪个文件。现在的只能靠猜。。。
2.该节model/course.js书上的源码少了一大块。最后courseSchema连导出的对象中weekday字段都被省略掉了。导致下文中index.js难以读懂。

感谢ikcamp编写此书。

[BUG] 第6章/6.3.3/app.js 的const customer = ctx.body 有错

错误代码

router.post('/course', async context => {
    context.request.type = JSON_MIME;
    await addCourse(context.body);
    context.type = JSON_MIME;
    context.body = { status: 0 };
});

正确代码

router.post('/course', async context => {
    context.request.type = JSON_MIME;
    await addCourse(context.request.body);
    context.type = JSON_MIME;
    context.body = { status: 0 };
});

curl命令post数据的代码

curl --data "name='CV001'&weekday=1&startTime.time=10&startTime.hour=11&startTime.minute=20&endTime.time=11&endTime.hour=12&endTime.minute=30" "http://127.0.0.1:3000/course"

[BUG] 6.2.2 的define.js 代码中id: Sequelize.UUID, title: Sequelize.STRING, 有问题

Ref https://github.com/ikcamp/Koa-Node.js-Web-FE-Development/blob/master/%E7%AC%AC6%E7%AB%A0/6.2.2/define.js

应该把
id: Sequelize.UUID,
改成
    id: {
        type: Sequelize.UUID,
        primaryKey: true
    }

把
title: Sequelize.STRING,
改成
type: Sequelize.STRING,

请问你们的第二章的完整代码在哪呢？找了半天都没找到

[BUG] 第二章第一个例子跑不通

var express = require('express');
var app=express();
var hostname = '127.0.0.1';
var port = 3000;
app.get('/',function(req,res){
    asyncFunction1(params, function(){
        asyncFunction2(params, function(){
            asyncFunction3(params, function(){
                res.send('Hello World!');
            });
        });
    });
});
var server = app.listen(3000);
console.log(`Server running at http://${hostname}:${port}/`);

运行后，访问 http://127.0.0.1:3000/ 报错

C:\Program Files\nodejs\node.exe' --nolazy --debug-brk=49936 index_express.js
Debugger listening on [::]:49936
Server running at http://127.0.0.1:3000/
ReferenceError: asyncFunction1 is not defined
    at d:\Code\nodejs_test\koa2_002\index_express.js:6:5
    at Layer.handle [as handle_request] (d:\Code\nodejs_test\koa2_002\node_modules\express\lib\router\layer.js:95:5)
    at next (d:\Code\nodejs_test\koa2_002\node_modules\express\lib\router\route.js:137:13)
    at Route.dispatch (d:\Code\nodejs_test\koa2_002\node_modules\express\lib\router\route.js:112:3)
    at Layer.handle [as handle_request] (d:\Code\nodejs_test\koa2_002\node_modules\express\lib\router\layer.js:95:5)
    at d:\Code\nodejs_test\koa2_002\node_modules\express\lib\router\index.js:281:22
    at Function.process_params (d:\Code\nodejs_test\koa2_002\node_modules\express\lib\router\index.js:335:12)
    at next (d:\Code\nodejs_test\koa2_002\node_modules\express\lib\router\index.js:275:10)
    at expressInit (d:\Code\nodejs_test\koa2_002\node_modules\express\lib\middleware\init.js:40:5)
    at Layer.handle [as handle_request] (d:\Code\nodejs_test\koa2_002\node_modules\express\lib\router\layer.js:95:5)

[BUG] 书中97页有错

97页

重写controller/home.js中的login方法,代码如下:
    login: async(ctx, next) => {
        await ctx.render('home/login', {
            btnName: 'GoGoGo'
        })
    }

应该改成

重写controller/home.js中的user方法,代码如下:
    user: async(ctx, next) => {
        await ctx.render('home/login', {
            btnName: 'GoGoGo'
        })
    }

书中和前面的例子是用user啊。
或者应该改书前面的代码，用login，这样要合理点。

[BUG] 第二章最后一个例子跑不通,差文件

差static,views下的文件啊,例子能给一个么？

const koa = require('koa');
const app = new koa();
const views = require('koa-views');
const path = require('path');
const static = require('koa-static');
const bodyParser = require('koa-bodyparser');
const Router = require('koa-router');
const router = new Router();
const process = require('process');
const hostname = '127.0.0.1';
const port = 3000;

app.use(views(__dirname + '/views', { // 加载模板引擎
    map: { html: 'ejs' }
}));

app.use(staic(path.join(__dirname, '/static')));
router.get('/', (ctx, next) => {
    await ctx.render('index');
});

router.post('/', (ctx, next) => {
    // 当POST请求时,中间件koa-bodyparser解析POST表单里的数据
    let postData = ctx.request.body;
    ctx.body = postData;
})
app.use(bodyParser())  // 加载koa-bodyparser中间件
    .use(router.routes())  // 加载koa-router中间件
    .use(router.allowedMethods()); //对异常状态码的处理

app.listen(port, () => {
    console.log(`Version: ${process.version}`);
    console.log(
        `Server(Koa2)(koa-static,koa-views) running at http://${hostname}:${port}`
    );
});

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