node 后端项目.zip

<p align="center"> <a href="https://nodemon.io/"><img src="https://user-images.githubusercontent.com/13700/35731649-652807e8-080e-11e8-88fd-1b2f6d553b2d.png" alt="Nodemon Logo"></a> </p> # nodemon nodemon is a tool that helps develop Node.js based applications by automatically restarting the node application when file changes in the directory are detected. nodemon does **not** require *any* additional changes to your code or method of development. nodemon is a replacement wrapper for `node`. To use `nodemon`, replace the word `node` on the command line when executing your script. [](https://npmjs.org/package/nodemon) [](https://travis-ci.org/remy/nodemon) [](#backers) [](#sponsors) # Installation Either through cloning with git or by using [npm](http://npmjs.org) (the recommended way): ```bash npm install -g nodemon # or using yarn: yarn global add nodemon ``` And nodemon will be installed globally to your system path. You can also install nodemon as a development dependency: ```bash npm install --save-dev nodemon # or using yarn: yarn add nodemon -D ``` With a local installation, nodemon will not be available in your system path or you can't use it directly from the command line. Instead, the local installation of nodemon can be run by calling it from within an npm script (such as `npm start`) or using `npx nodemon`. # Usage nodemon wraps your application, so you can pass all the arguments you would normally pass to your app: ```bash nodemon [your node app] ``` For CLI options, use the `-h` (or `--help`) argument: ```bash nodemon -h ``` Using nodemon is simple, if my application accepted a host and port as the arguments, I would start it as so: ```bash nodemon ./server.js localhost 8080 ``` Any output from this script is prefixed with `[nodemon]`, otherwise all output from your application, errors included, will be echoed out as expected. You can also pass the `inspect` flag to node through the command line as you would normally: ```bash nodemon --inspect ./server.js 80 ``` If you have a `package.json` file for your app, you can omit the main script entirely and nodemon will read the `package.json` for the `main` property and use that value as the app ([ref](https://github.com/remy/nodemon/issues/14)). nodemon will also search for the `scripts.start` property in `package.json` (as of nodemon 1.1.x). Also check out the [FAQ](https://github.com/remy/nodemon/blob/master/faq.md) or [issues](https://github.com/remy/nodemon/issues) for nodemon. ## Automatic re-running nodemon was originally written to restart hanging processes such as web servers, but now supports apps that cleanly exit. If your script exits cleanly, nodemon will continue to monitor the directory (or directories) and restart the script if there are any changes. ## Manual restarting Whilst nodemon is running, if you need to manually restart your application, instead of stopping and restart nodemon, you can type `rs` with a carriage return, and nodemon will restart your process. ## Config files nodemon supports local and global configuration files. These are usually named `nodemon.json` and can be located in the current working directory or in your home directory. An alternative local configuration file can be specified with the `--config <file>` option. The specificity is as follows, so that a command line argument will always override the config file settings: - command line arguments - local config - global config A config file can take any of the command line arguments as JSON key values, for example: ```json { "verbose": true, "ignore": ["*.test.js", "**/fixtures/**"], "execMap": { "rb": "ruby", "pde": "processing --sketch={{pwd}} --run" } } ``` The above `nodemon.json` file might be my global config so that I have support for ruby files and processing files, and I can run `nodemon demo.pde` and nodemon will automatically know how to run the script even though out of the box support for processing scripts. A further example of options can be seen in [sample-nodemon.md](https://github.com/remy/nodemon/blob/master/doc/sample-nodemon.md) ### package.json If you want to keep all your package configurations in one place, nodemon supports using `package.json` for configuration. Specify the config in the same format as you would for a config file but under `nodemonConfig` in the `package.json` file, for example, take the following `package.json`: ```json { "name": "nodemon", "homepage": "http://nodemon.io", "...": "... other standard package.json values", "nodemonConfig": { "ignore": ["**/test/**", "**/docs/**"], "delay": 2500 } } ``` Note that if you specify a `--config` file or provide a local `nodemon.json` any `package.json` config is ignored. *This section needs better documentation, but for now you can also see `nodemon --help config` ([also here](https://github.com/remy/nodemon/blob/master/doc/cli/config.txt))*. ## Using nodemon as a module Please see [doc/requireable.md](doc/requireable.md) ## Using nodemon as child process Please see [doc/events.md](doc/events.md#Using_nodemon_as_child_process) ## Running non-node scripts nodemon can also be used to execute and monitor other programs. nodemon will read the file extension of the script being run and monitor that extension instead of `.js` if there's no `nodemon.json`: ```bash nodemon --exec "python -v" ./app.py ``` Now nodemon will run `app.py` with python in verbose mode (note that if you're not passing args to the exec program, you don't need the quotes), and look for new or modified files with the `.py` extension. ### Default executables Using the `nodemon.json` config file, you can define your own default executables using the `execMap` property. This is particularly useful if you're working with a language that isn't supported by default by nodemon. To add support for nodemon to know about the `.pl` extension (for Perl), the `nodemon.json` file would add: ```json { "execMap": { "pl": "perl" } } ``` Now running the following, nodemon will know to use `perl` as the executable: ```bash nodemon script.pl ``` It's generally recommended to use the global `nodemon.json` to add your own `execMap` options. However, if there's a common default that's missing, this can be merged in to the project so that nodemon supports it by default, by changing [default.js](https://github.com/remy/nodemon/blob/master/lib/config/defaults.js) and sending a pull request. ## Monitoring multiple directories By default nodemon monitors the current working directory. If you want to take control of that option, use the `--watch` option to add specific paths: ```bash nodemon --watch app --watch libs app/server.js ``` Now nodemon will only restart if there are changes in the `./app` or `./libs` directory. By default nodemon will traverse sub-directories, so there's no need in explicitly including sub-directories. Nodemon also supports unix globbing, e.g `--watch './lib/*'`. The globbing pattern must be quoted. ## Specifying extension watch list By default, nodemon looks for files with the `.js`, `.mjs`, `.coffee`, `.litcoffee`, and `.json` extensions. If you use the `--exec` option and monitor `app.py` nodemon will monitor files with the extension of `.py`. However, you can specify your own list with the `-e` (or `--ext`) switch like so: ```bash nodemon -e js,pug ``` Now nodemon will restart on any changes to files in the directory (or subdirectories) with the extensions `.js`, `.pug`. ## Ignoring files By default, nodemon will only restart when a `.js` JavaScript file changes. In some cases you will want to ignore some specific files, directories or file patterns, to p