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D:\phpStudy\PHPTutorial\WWW\tp5\application\index\controller\Index.php:
<?php namespace app\index\controller; class Index { public function index() { return "萌面人资料铺"; } public function demo1($lession) { return "学习课程:".$lession; } public function demo2() { return "学习课程:".$lession; } }
执行:
1.继承基类,使用$this->request->param(‘lession’);获取请求变量
<?php namespace app\index\controller; use think\Controller; class Index extends Controller { public function index() { return "萌面人资料铺"; } public function demo1() { return "学习课程:".$this->request->param('lession'); } public function demo2() { return "学习课程:".$this->request->param('lession'); } }
执行:
2.直接使用请求类Request
<?php namespace app\index\controller; use think\Request; class Index { public function index() { return "萌面人资料铺"; } public function demo1() { return "学习课程:".Request::instance()->param('lession'); } public function demo2() { return "学习课程:".Request::instance()->param('lession'); } }
执行:
3.依赖注入
<?php namespace app\index\controller; use think\Request; class Index { public function index() { return "萌面人资料铺"; } public function demo1(Request $request) { return "学习课程:".$request->param('lession'); } public function demo2() { return "学习课程:".$request->param('lession'); } }
执行:
由上可知:并没有实现数据共享
解决方法:将Request对象使用依赖注入,注入到构造方法中
<?php namespace app\index\controller; use think\Request; class Index { protected $request; public function __construct(Request $request) { $this->request=Request::instance(); } public function demo1() { return "学习课程:".$this->request->param('lession'); } public function demo2() { return "学习课程:".$this->request->param('lession'); } }
执行:
此时实现了依赖注入的对象在所有操作中的共享
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