✨(middleware): 将前端发送过来的请求参数驼峰转下划线，后端响应参数下划线转驼峰

src/Middleware/ApiCaseConverter.php

@@ -0,0 +1,122 @@
+<?php
+
+namespace JoyceZ\LaravelLib\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+use Illuminate\Support\Str;
+use Symfony\Component\HttpFoundation\ParameterBag;
+
+/**
+ * 1、将前端发送过来的请求参数驼峰转下划线
+ * 2、后端响应参数下划线转驼峰
+ * Class ApiCaseConverter
+ * @package App\Http\Middleware
+ */
+class ApiCaseConverter
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param \Illuminate\Http\Request $request
+     * @param \Closure(\Illuminate\Http\Request): (\Illuminate\Http\Response|\Illuminate\Http\RedirectResponse)  $next
+     * @return \Illuminate\Http\Response|\Illuminate\Http\RedirectResponse
+     */
+    public function handle(Request $request, Closure $next)
+    {
+        $this->convertRequestNameCase($request);
+        $response = $next($request);
+        $this->convertResponseNameCase($response);
+        return $response;
+    }
+
+    /**
+     * 请求数据驼峰转下划线
+     * @param $request
+     */
+    private function convertRequestNameCase($request)
+    {
+        $this->convertParameterNameCase($request->request);;
+        $this->convertParameterNameCase($request->query);;
+        $this->convertParameterNameCase($request->files);;
+        $this->convertParameterNameCase($request->cookies);;
+    }
+
+    /**
+     * 将驼峰命名转下划线命名
+     * @param ParameterBag $parameterBag
+     */
+    private function convertParameterNameCase($parameterBag)
+    {
+        $parameters = $parameterBag->all();
+        $parameterBag->replace($this->recursiveConvertParameterNameCase($parameters));
+    }
+
+    /**
+     * 循环迭代将数组键驼峰转下划线
+     * @param $arr
+     * @return array
+     */
+    private function recursiveConvertParameterNameCase($arr)
+    {
+        if (!is_array($arr)) {
+            return $arr;
+        }
+        $params = [];
+        foreach ($arr as $key => $value) {
+            if (!is_int($key)) {
+                if (is_array($value)) {
+                    $params[Str::snake($key)] = $this->recursiveConvertParameterNameCase($value);
+                } else {
+                    $params[Str::snake($key)] = $value;
+                }
+            } elseif (is_array($value)) {
+                $params[$key] = $this->recursiveConvertParameterNameCase($value);
+            } else {
+                $params[Str::snake($key)] = $value;
+            }
+        }
+        return $params;
+    }
+
+    /**
+     * 响应数据下划线转驼峰
+     * @param $response
+     */
+    private function convertResponseNameCase($response)
+    {
+        $content = $response->getContent();
+        $json = json_decode($content, true);
+        if (is_array($json)) {
+            $json = $this->recursiveConvertNameCaseToCamel($json);
+            $response->setContent(json_encode($json));
+        }
+    }
+
+    /**
+     * 循环迭代将数组键转换位驼峰
+     * @param $arr
+     * @return array
+     */
+    private function recursiveConvertNameCaseToCamel($arr)
+    {
+        if (!is_array($arr)) {
+            return $arr;
+        }
+        $outArray = [];
+        foreach ($arr as $key => $value) {
+            if (!is_int($key)) {
+                if (is_array($value)) {
+                    $outArray[Str::camel($key)] = $this->recursiveConvertNameCaseToCamel($value);
+                } else {
+                    $outArray[Str::camel($key)] = $value;
+                }
+            } elseif (is_array($value)) {
+                $outArray[$key] = $this->recursiveConvertNameCaseToCamel($value);
+            } else {
+                $outArray[Str::camel($key)] = $value;
+            }
+        }
+        return $outArray;
+    }
+}