一文搞懂EMAS Serverless小程序开发｜电子书免费下载

// app.jsimportMPServerlessfrom'@alicloud/mpserverless-sdk'constmpserverless=newMPServerless(my, {
appId: '小程序 AppID',
spaceId: '服务空间 SpaceId',
clientSecret: '服务空间 Secret',
endpoint: '服务空间 API Endpoint'});
App({
mpserverless: mpserverless,
onLaunch() {
mpserverless.init(
authorType: 'anonymous'        );
    },
});

// 云函数入口定义在 index.js 中module.exports=asyncctx=> {
// do somethingreturnresult}

// index.jsmodule.exports=asyncctx=> {
const { action, x, y } =ctx.args;
letresult=0switch (action) {
case'+': result=x+y; break;
case'-': result=x-y; break;
case'*': result=x*y; break;
case'/':
if (y===0) {
thrownewError('cannot divide by 0')
            }
result=x/y; break;
default:
thrownewError('not support action '+action)
    }
return { result }
}

mpserverless.db.collection('user').findOne( { name: '张三' } )

{
"id": 5573,
"name": "Egg T恤",
"desc": {
"short": "限量版 Egg T恤，穿上它你离极客也不远了",
"long": "这是一段非常长的描述",
"category": {
"_id": "48bf43a..29e90bc",
"name": "上衣"    }
  },
"attributes": [
    {
"id": 1151,
"name": "尺寸",
"values": [
        {
"id": 3871,
"value": "S"        },
        {
"id": 3874,
"value": "M"        },
        {
"id": 3875,
"value": "L"        }
      ]
    },
    {
"id": 1152,
"name": "性别",
"values": [
        {
"id": 3872,
"value": "男"        },
        {
"id": 3873,
"value": "女"        }
      ]
    }
  ],
"sku": [
    {
"id": 1153,
"stock": 30,
"attributeIds": [
3871,
3872      ],
"attributes": [
        {
"key": "尺寸",
"value": "S"        },
        {
"key": "性别",
"value": "女"        }
      ]
    }
  ]
}

mpserverless.db.collection('users').insertOne( { 
name: '张三',
age: 18} )

mpserverless.db.collection('users').insertOne( [ 
    { name: '张三', age: 18 },
    { name: '李四', age: 17 }
] )

mpserverless.db.collection('users').deleteOne( { 
name: '张三'} )

mpserverless.db.collection('users').deleteMany( { 
age: { $lt: 18 }
} )

mpserverless.db.collection('users').findOne( { 
age: { $gt: 18 }
} )

mpserverless.db.collection('users').find( {
age: { $gt: 18 }
}, {
projection: { name: 1 },
sort: { age: 1 }
} )

mpserverless.db.collection('users').findOneAndDelete( {
age: { $lt: 18 }
}, {
sort: { age: -1 }
} )

mpserverless.db.collection('users').findOneAndReplace( {
name: "张三"}, {
name: "张三三",
age: 20}, {
upsert: true// 如果不存在则插入} )

mpserverless.db.collection('users').findOneAndUpdate( {
name: "张三"}, {
$set: {
name: "张三三",
age: 20    }
}, {
upsert: true// 如果不存在则插入} )

mpserverless.db.collection('users').updateOne( {
name: "张三"}, {
$set: {
age: 22    }
} )

mpserverless.db.collection('users').updateMany( {
name: "张三"}, {
$set: {
age: 22    }
} )

mpserverless.db.collection('users').replaceOne( {
name: "张三"}, {
$set: {
name: '张阿三',
age: 22    }
}, {
upsert: true// 如果不存在则插入，为 flase 时代表不存在则不做任何操作} )

mpserverless.db.collection('users').distinct(
'name', 
    { age: { $gt: 18 }
)

mpserverless.db.collection('users').count( {
age: { $gt: 18 }
} )

my.chooseImage({
chooseImage: 1,
success: res=> {
constpath=res.apFilePaths[0];
constoptions= {
filePath: path,
        };
mpserverless.file.uploadFile(options)
        .then(res=> { 
console.log(res);  
        })
        .catch(err=> {  
console.log(err);
        });
    },
});

{
"fileUrl": "https://mp-…storage/2e7acad6-2212-4863-aaa7-4e89d7d8df4c.png", 
"filePath": "cloudstorage/2e7acad6-2212-4863-aaa7-4e89d7d8df4c.png"}

constfileURL='https://mp...bspapp.com/xxx-xx/4b82ded0-0118-4de4-9f50-ab13110a1ffb.jpg';
mpserverless.file.deleteFile(fileURL)