前言
根据上一篇文章，我们已经吧 dingo/api给安装并且调试好了，那么下一步，就是来完善咱们的API了。
最首要的步骤一定是要先把注册的功能给完善了，好了，那就给第一条正式API起个名字吧——
http://localhost/register
首先先对这条API进行分析。这是一个用户注册的API，新用户通过访问它来注册账号，之后才能有权限进行其他的操作，享受其它的APP服务。那么我们在访问的时候，就应当把正确的信息输入进去，因为客户端是APP，所以要输入的字段应该是这些——（手机号）phone、（密码）password。
那么在一切准备就绪以后，当服务器处理完操作以后，我们又该获得什么callback呢？
接下来就是我自己作为一个新手小白的个人理解了。当注册成功以后，我们应该立即返回确认用户登录的token值，并且作为APP的config变量给储存起来，直到退出时删除，或者超出时间后删除。
分析完毕，开始实践
在开始之前呢，我们要在项目里安装 JWT（JSON WEB TOKEN），这是一种API的验证方式，详细的部分可以去看文档，它的主要作用就是在客户端的用户发出注册和登录的请求之后，返回一串token值，在之后成功登录以后以这个token值作为凭证来验证是否有获取资源的权限。
如何安装请看这个 JWT
确定安装好 JWT以后，首先就来创建路由吧。
首先打开routes.php，修改路由
Route::post('/register', 'Auth\AuthenticateController@register'); 然后创建一个控制器，在laravel项目下运行
php artisan make:controller Auth/AuthenticateController
接下来，我们直接用纯html页面当做APP，去测试API，创建新的test文件夹，结构如下
test/├── css/│ └── bootstrap.min.css├── js/│ ├── jquery.min.js│ └── bootstrap.min.js├── fonts/│ ├── glyphicons-halflings-regular.eot│ ├── glyphicons-halflings-regular.svg│ ├── glyphicons-halflings-regular.ttf│ ├── glyphicons-halflings-regular.woff│ └── glyphicons-halflings-regular.woff2└── register.html
在register.html文件里添加内容
<!DOCTYPE html><html lang="zh-CN"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>注册</title> <link href="css/bootstrap.min.css" rel="stylesheet"> </head> <body> <nav class="navbar navbar-default"> <div class="container"> <div class="navbar-header"> <!-- Collapsed Hamburger --> <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#spark-navbar-collapse"> <span class="sr-only">切换导航</span> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> <!-- Branding Image --> <a class="navbar-brand" href="#"> <b>i ·</b> APP </a> </div> <div class="collapse navbar-collapse" id="spark-navbar-collapse"> <!-- Left Side Of Navbar --> <ul class="nav navbar-nav"> <li><a href="#">登录</a></li> </ul> <!-- Right Side Of Navbar --> <ul class="nav navbar-nav navbar-right"> <!-- Authentication Links --> </ul> </div> </div> </nav> <div class="container"> <div class="row"> <div class="col-md-8 col-md-offset-2"> <div class="panel panel-default"> <div class="panel-heading">注册</div> <div class="panel-body"> <form id="register" class="form-horizontal"> <div class="form-group"> <label class="col-md-4 control-label">用户名</label> <div class="col-md-6"> <input type="text" class="form-control" name="name"> </div> </div> <div class="form-group"> <label class="col-md-4 control-label">手机号</label> <div class="col-md-6"> <input type="text" class="form-control" name="phone"> </div> </div> <div class="form-group"> <label class="col-md-4 control-label">密码</label> <div class="col-md-6"> <input type="password" class="form-control" name="password"> </div> </div> <!-- <div class="form-group"> <label class="col-md-4 control-label">密码确认</label> <div class="col-md-6"> <input type="password" class="form-control" name="password_confirmation"> </div> </div> --> <div class="form-group"> <div class="col-md-6 col-md-offset-4"> <button type="submit" class="btn btn-primary"> <i class="fa fa-btn fa-user"></i>立即注册 </button> </div> </div> </form> </div> </div> </div> </div> </div> <script src="js/jquery.min.js"></script> <script src="js/bootstrap.min.js"></script> <script type="text/javascript"> var $registerForm = $('#register'); var response; $registerForm.submit(function(){ $.ajax({ type: "post", url: "http://localhost/register", data: $(this).serialize(), async: false, dataType:'json', success: function(data){ alert(JSON.stringify(data)); }, // complete: function(){ // alert('ok'); // }, // error: function(XMLHttpRequest, textStatus, errorThrown) { // alert(XMLHttpRequest.status); // alert(XMLHttpRequest.readyState); // alert(textStatus); // } }); }); </script> </body></html> 在 AuthenticateController里添加如下函数
<?phpnamespace App\Http\Controllers\Auth;use Illuminate\Http\Request;use App\Http\Requests;use App\Http\Controllers\Controller;use JWTAuth;use Tymon\JWTAuth\Exceptions\JWTException;use App\User;class AuthenticateController extends Controller{ public function authenticate(Request $request) { // grab credentials from the request $credentials = $request->only('email', 'password'); try { // attempt to verify the credentials and create a token for the user if (! $token = JWTAuth::attempt($credentials)) { return response()->json(['error' => 'invalid_credentials'], 401); } } catch (JWTException $e) { // something went wrong whilst attempting to encode the token return response()->json(['error' => 'could_not_create_token'], 500); } // all good so return the token return response()->json(compact('token')); } public function register(Request $request) { $newUser = [ 'name' => $request->get('name'), 'phone' => $request->get('phone'), 'password' => bcrypt($request->get('password')), ]; $user = User::create($newUser); $token = JWTAuth::fromUser($user); return response()->json(compact('token')); }} 例子很简单，就是储存请求的数据然后返回 token值。
这里就不得不来说说我遇到的一个大坑
其实按照以上的代码完全可以将新用户写入数据库的。但是！
token值不能被返回！这就让人很头大了。于是我又看了看文章，发现以上的那些操作叫做跨域请求。在laravel文档里也有提及，对，就是那个叫 jsonp的东东。于是又看了些文章，把ajax方法修改成了这个样子
$.ajax({ type: "get", url: "http://localhost/register", data: $(this).serialize(), async: false, dataType:'jsonp', jsonp: 'callback' success: function(data){ alert(JSON.stringify(data)); }, complete: function(){ alert('ok'); }, error: function(XMLHttpRequest, textStatus, errorThrown) { alert(XMLHttpRequest.status); alert(XMLHttpRequest.readyState); alert(textStatus); }});
这下又可以写进去了，但是呢！还是没有 token值的出现。。。
而且呢，请求方式也被换成了get，这是为什么呢？后来才知道这是因为 jsonp和 post根本不可能实现，或者说实现起来太难，所以我也就不为难自己了。我到那时就完全的跑偏了。。。又把 ajax的方法改了回去，打开控制台，再试一遍，才发现，原来想要实现跨域，要在请求的 header中加入 Access-Control-Allow-Origin属性。
这下子感觉有希望了，于是立即创建一个 http中间件吧。
php artisan make:middleware AccessMiddleware
在里面写上
<?phpnamespace App\Http\Middleware;use Closure;class AccessMiddleware{ public function handle($request, Closure $next) { header('Access-Control-Allow-Origin: *'); header('Access-Control-Allow-Methods: GET, POST, OPTIONS'); header('Access-Control-Allow-Headers: Origin, Content-Type, Accept, Authorization, X-Request-With'); header('Access-Control-Allow-Credentials: true'); return $next($request); }} 记得在kernel.php文件中注册中间件哟，在 $routeMiddleware里添加
'access' => \App\Http\Middleware\AccessMiddleware::class,
接下来再来修改路由
Route::group(['middleware' => 'access'], function () { Route::post('/register','Auth\AuthenticateController@register');}); 然后再来测试一下，输入表单，点立即注册，之后 bingo，token值出来了。
用户信息也被正常写入，之后就可以欢快的扩展注册机制啦。
在这里先规划一下吧。首先在控制器内添加表单验证，然后返回不同的 json数据给客户端。但是毕竟我不是专业的，我只是爱好这个才去写这些东西的，关于应该返回什么数据现在脑子里还是一片混乱。 如果有大神偶然间看到了我的这篇文章，希望可以给我一点指导和建议，十分的感谢!
最后
上面的例子完全是我自己看文档+原创给整出来的，如果有错请及时告诉我哟~
上面的例子到最后虽然都实现了，但是我仍然觉得很 low，毕竟个人的智慧还是有限的。如果大家有对这个十分感兴趣，可以联系我，咱们可以一起边学边做，共同进步！我的邮箱： lwx12525@qq.com如果恰巧大神路过，请务必给我一些指导，小白将万分的感谢 O(∩_∩)O~~
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