1.全域性安裝json-server【可能需要管理員許可權】

npm i -g json-server

2.建立資料夾jsonerver,初始化package.json檔案
npm init

3.區域性安裝json-server
npm i json-server --save

4.修改package.json檔案,配置啟動方式
"scripts":{
"json:server":"json-server --watch db.json"
}

5.建立db.json檔案

{
	"users":[
		{
			"name":"zs",
			"phone":"123",
			"email":"
 
[email protected]",
			"id":1,
			"age":12,
			"companyid":1
		},
		{
			"name":"ls",
			"phone":"234",
			"email":"[email protected]",
			"id":2,
			"age":13,
			"companyid":2
		},
		{
			"name":"ww",
			"phone":"345",
			"email":"[email protected]",
			"id":3,
			"age":14,
			"companyid":3
		},
		{
			"name":"cl",
			"phone":"456",
			"email":"
 
[email protected]",
			"id":4,
			"age":15,
			"companyid":3
		}
	],
	"companies":[
		{
			"id":1,
			"name":"Apple",
			"des":"apple is good"
		},
		{
			"id":2,
			"name":"ms",
			"des":"ms is good"
		},
		{
			"id":3,
			"name":"gg",
			"des":"gg is good"
		}
	]
}

6.執行
npm run json:server

localhost:3000/xxx
只能執行一個3000的埠，如果含有另一個3000埠，會執行不成功