227 lines
8.4 KiB
PHP
Executable File
227 lines
8.4 KiB
PHP
Executable File
<?php
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namespace App\Core;
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class Router {
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private array $routes = [];
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private array $dependencies = [];
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private function handle404() {
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$controller = new BaseController();
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$controller->show404();
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}
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/**
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* 添加路由
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* @param string $method 请求方法 GET/POST 等
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* @param string $path 路径，必须以 / 开头，尾部无 /
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* @param callable|string $callback 处理器，格式：Controller@method 或回调函数
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*/
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public function add($method, $path, $callback) {
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$methods = explode('|', strtoupper($method)); // 支持多方法
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$normalizedPath = $this->normalizePath($path);
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foreach ($methods as $m) {
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$this->routes[$m][$normalizedPath] = $callback;
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}
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}
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public function get($path, $callback) {
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$this->add('GET', $path, $callback);
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}
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public function post($path, $callback) {
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$this->add('POST', $path, $callback);
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}
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public function hasRoute($method, $path): bool {
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$method = strtoupper($method);
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$normalizedPath = $this->normalizePath($path);
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return isset($this->routes[$method][$normalizedPath]);
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}
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public function setDependencies(array $deps) {
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$this->dependencies = $deps;
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}
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/**
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* 路由分发
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* @param string $method 请求方法
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* @param string $uri 请求路径
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* @param array $dependencies 依赖注入数组，键为类名，值为实例（可选）
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*/
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public function dispatch($method, $uri, $dependencies = []) {
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$dependencies = array_merge($this->dependencies, $dependencies);
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$method = strtoupper($method);
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$normalizedPath = $this->normalizePath($uri);
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if (!isset($this->routes[$method])) {
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header("HTTP/1.1 404 Not Found");
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echo "请求方法 [$method] 无任何注册路由。";
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return;
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}
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// 精确匹配
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if (isset($this->routes[$method][$normalizedPath])) {
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$this->callHandler($this->routes[$method][$normalizedPath], [], $dependencies);
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return;
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}
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// 模糊匹配带参数路由
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foreach ($this->routes[$method] as $routePath => $callback) {
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$pattern = $this->convertToRegex($routePath);
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if (preg_match($pattern, $normalizedPath, $matches)) {
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array_shift($matches); // 去掉完整匹配
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$this->callHandler($callback, $matches, $dependencies);
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return;
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}
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}
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// 404
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$this->handle404();
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}
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public function group(string $prefixUri, string $controllerNamespace, array $routes)
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{
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foreach ($routes as $route) {
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if (count($route) < 3) {
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throw new \InvalidArgumentException("每个子路由必须包含 method、uri、handler");
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}
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[$method, $subUri, $handler] = $route;
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// 构造完整 URI
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$uri = rtrim($prefixUri, '/') . '/' . ltrim($subUri, '/');
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// 构造完整处理器（加命名空间）
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if (strpos($handler, '@') !== false) {
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[$controller, $action] = explode('@', $handler);
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$fullHandler = $controllerNamespace . '\\' . $controller . '@' . $action;
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} else {
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$fullHandler = $controllerNamespace . '\\' . $handler;
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}
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$this->add($method, $uri, $fullHandler);
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}
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}
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/**
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* 调用处理器，支持构造函数依赖注入
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* @param callable|string $callback
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* @param array $params 传给方法的参数
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* @param array $dependencies 依赖注入映射，key: 类名，value: 实例
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*/
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private function callHandler($callback, $params = [], $dependencies = []) {
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$requestMethod = $_SERVER['REQUEST_METHOD'] ?? '未知请求方法';
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$requestUri = $_SERVER['REQUEST_URI'] ?? '未知请求路径';
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if (is_string($callback) && strpos($callback, '@') !== false) {
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list($class, $method) = explode('@', $callback);
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if (class_exists($class) && method_exists($class, $method)) {
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try {
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$reflection = new \ReflectionClass($class);
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$instance = null;
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$constructor = $reflection->getConstructor();
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if ($constructor) {
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$ctorParams = $constructor->getParameters();
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$args = [];
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foreach ($ctorParams as $param) {
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$paramType = $param->getType();
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if ($paramType && !$paramType->isBuiltin()) {
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$paramClassName = $paramType->getName();
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if (isset($dependencies[$paramClassName])) {
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$args[] = $dependencies[$paramClassName];
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} elseif ($param->isDefaultValueAvailable()) {
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$args[] = $param->getDefaultValue();
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} else {
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throw new \Exception("依赖注入失败：未提供 {$paramClassName} 实例");
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}
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} else {
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$args[] = $param->isDefaultValueAvailable() ? $param->getDefaultValue() : null;
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}
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}
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$instance = $reflection->newInstanceArgs($args);
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} else {
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$instance = new $class();
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}
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// ⚠️ 此处加入详细异常捕获
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try {
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call_user_func_array([$instance, $method], $params);
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} catch (\Throwable $e) {
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http_response_code(500);
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echo "处理错误：<br>";
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echo "<strong>" . htmlspecialchars($e->getMessage()) . "</strong><br>";
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echo "文件：" . $e->getFile() . " 第 " . $e->getLine() . " 行<br>";
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echo "<pre>" . $e->getTraceAsString() . "</pre>";
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exit;
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}
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return;
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} catch (\Throwable $e) {
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http_response_code(500);
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echo "控制器初始化错误：<br>";
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echo "<strong>" . htmlspecialchars($e->getMessage()) . "</strong><br>";
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echo "文件：" . $e->getFile() . " 第 " . $e->getLine() . " 行<br>";
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echo "<pre>" . $e->getTraceAsString() . "</pre>";
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exit;
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}
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}
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http_response_code(500);
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echo "处理错误：类 <strong>" . htmlspecialchars($class) . "</strong> 或方法 <strong>" . htmlspecialchars($method) . "</strong> 未找到。<br>";
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echo "请求方法：<strong>{$requestMethod}</strong><br>";
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echo "请求路径：<strong>{$requestUri}</strong><br>";
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return;
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}
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if (is_callable($callback)) {
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try {
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call_user_func_array($callback, $params);
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} catch (\Throwable $e) {
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http_response_code(500);
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echo "回调执行错误：<br>";
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echo "<strong>" . htmlspecialchars($e->getMessage()) . "</strong><br>";
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echo "文件：" . $e->getFile() . " 第 " . $e->getLine() . " 行<br>";
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echo "<pre>" . $e->getTraceAsString() . "</pre>";
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exit;
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}
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return;
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}
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http_response_code(500);
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echo "无效的路由处理器。<br>";
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echo "请求方法：<strong>{$requestMethod}</strong><br>";
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echo "请求路径：<strong>{$requestUri}</strong><br>";
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}
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/**
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* 规范化路径，保证统一格式：
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* - 开头带 /
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* - 尾部无 /
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* - 根路径保持 /
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*/
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private function normalizePath($path) {
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$path = trim($path);
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if ($path === '' || $path === '/') {
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return '/';
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}
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return '/' . trim($path, '/');
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}
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/**
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* 将路由路径转为正则表达式，支持 {param} 动态参数
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* @param string $routePath
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* @return string 正则表达式
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*/
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private function convertToRegex($routePath) {
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$pattern = preg_replace('/\{[a-zA-Z0-9_]+\}/', '([^/]+)', $routePath);
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return '/^' . str_replace('/', '\/', $pattern) . '$/';
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}
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}
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