json-server implements back-end data simulation-JS Tutorial-php.cn

json-server implements back-end data simulation

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Release： 2018-04-28 13:33:36

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This time I will bring you json-server to implement back-end data simulation. What are the precautions for json-server to implement back-end data simulation. The following is a practical case, let’s take a look.

During the development process, the front-end and back-end are separated or not separated. The interface is mostly developed with the page later, so it is very necessary to establish a rest APL interface to provide virtual data to the front-end, so here I use json- As a tool, server supports CORS and JSONP cross-domain requests, supports GET, POST, PUT, PATCH and DELETE methods, and also provides a series of query methods, such as limit, order, etc. , Next, I wrote my own usage intentions into documents

Installation

First of all, there must be a node environment (all use json-server There must be a node environment) and then install json-server globally

npm install json-server -g

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After the installation is completed, check whether the global installation is successful

G:\demo\JavaScript\Vue\Vue one\project\my-project\Vue_two\my-project>json-server -h
index.js [options] <source>
Options:
 --config, -c        Path to config file  [default: "json-server.json"]
 --port, -p         Set port              [default: 3000]
 --host, -H         Set host            [default: "0.0.0.0"]
 --watch, -w        Watch file(s)               [boolean]
 --routes, -r        Path to routes file
 --middlewares, -m     Paths to middleware files          [array]
 --static, -s        Set static files directory
 --read-only, --ro     Allow only GET requests          [boolean]
 --no-cors, --nc      Disable Cross-Origin Resource Sharing   [boolean]
 --no-gzip, --ng      Disable GZIP Content-Encoding       [boolean]
 --snapshots, -S      Set snapshots directory       [default: "."]
 --delay, -d        Add delay to responses (ms)
 --id, -i          Set database id property (e.g. _id) [default: "id"]
 --foreignKeySuffix, --fks Set foreign key suffix (e.g. _id as in post_id)
                                 [default: "Id"]
 --quiet, -q        Suppress log messages from output     [boolean]
 --help, -h         Show help                 [boolean]
 --version, -v       Show version number            [boolean]
Examples:
 index.js db.json
 index.js file.js
 index.js http://example.com/db.json
https://github.com/typicode/json-server

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Create a db.json directory in the project root directory, and then write it Information

{
 "api": [
  {
   "text": "数据统计",
   "link": "#",
   "hot": true
  },
  {
   "text": "数据检测",
   "link": "#",
   "hot": true
  },
  {
   "text": "流量分析",
   "link": "#",
   "hot": true
  },
  {
   "text": "广告发布",
   "link": "#",
   "hot": false
  }
 ]
}

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Add a line of commands to the scripts in package.json

  "json": "json-server db.json --port 3003"

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Execute the command in the project directory

npm run json

You will see such an interface in bash

> vue@1.0.0 json g:\demo\JavaScript\Vue\Vue one\project\my-project\Vue_two\my-project
> json-server db.json --port 3003
 \{^_^}/ hi!
 Loading db.json
 Done
 Resources
 http://localhost:3003/api
 Home
 http://localhost:3003
 Type s + enter at any time to create a snapshot of the database

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Congratulations on the successful startup!

Enter the web page for access at this time

You can access it at this time

http://localhost:3003/api

You can see the json string written before

The json-server is now started.

The calling code is as follows After initializing the

this.$http.get('http://localhost:3003/api')
   .then((data) => {
    console.log(data.body)
   }, () => {
    console.log('这里是用了vue-source,后端没有接口')
   })

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page, you can see that the data is completed

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the PHP Chinese website!