Laravel文件上传图片验证：MIME类型与image规则的深度解析

'photo' => 'image|mimes:jpeg|min:1|max:2000',

'photo' => 'image|mimes:jpeg|min:1|max:2000',

'photo' => 'mimes:jpeg|min:1|max:2000',

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Validator;
use Exception; // 确保引入Exception

public function compute(Request $request)
{
    // 定义验证规则
    $rules = [
        'vessel' => 'required',
        'date' => 'required',
        // ... 其他必填字段
        'photo' => 'mimes:jpeg|min:1|max:2000', // 修正后的图片验证规则
    ];

    // 执行验证
    $validator = Validator::make($request->all(), $rules);

    if ($validator->fails()) {
        return redirect()->back()
            ->withInput()
            ->withErrors($validator);
    }

    // 验证通过，处理数据
    $data = $request->all();
    // ... 其他数据处理逻辑

    try {
        $report = new insertQualityReport();
        // ... 为报告对象赋值

        // 处理图片上传
        if ($request->hasFile('photo') && $request->file('photo')->isValid()) {
            // 假设您有一个存储图片的方法，例如使用 Laravel 的 storage 门面
            // $path = $request->file('photo')->store('photos', 'public');
            // $report->photo = $path;
            // 注意：原始代码直接 $report->photo = $data["photo"]; 这是不正确的
            // $data["photo"] 此时是一个 UploadedFile 实例，而不是路径或文件名
            // 您需要先将文件存储到服务器，然后将存储路径保存到数据库
            // 示例：
            $imageFile = $request->file('photo');
            $imageName = time() . '.' . $imageFile->getClientOriginalExtension();
            $imageFile->move(public_path('uploads/photos'), $imageName); // 移动到 public/uploads/photos 目录
            $report->photo = 'uploads/photos/' . $imageName; // 保存相对路径
        } else {
            $report->photo = null;
        }

        if (!$report->save()) {
            return redirect()->back()
                ->withInput()
                ->withErrors(["errors" => ["保存报告时出现问题"]]);
        }

        return redirect()->back()
            ->withInput()
            ->with('comments', $data['comments']);

    } catch (Exception $e) {
        return redirect()->back()
            ->withInput()
            ->withErrors(["errors" => [$e->getMessage()]]);
    }
}

<form id="form" action="{{ url('/addqualityreport') }}" onsubmit="return validate(event)" method="POST" enctype="multipart/form-data" name="form">
    @csrf <!-- Laravel CSRF 保护 -->
    <!-- ... 其他输入字段 -->

    <div class="row ms-3 mt-2 mb-2 imput-group">
        <label for="photo" class="col-2 me-5">上传照片</label>
        <span class="input-group-text col-1 photo" style="min-width:min-content;">仅限JPEG</span>
        <input type="file" name="photo" id="photo" class="form-control col-7" style="text-align:left;width:33.5%;height:100%;" accept="image/jpeg"/>
    </div>

    <div class="row justify-content-center m-2">
        <input type="reset" id="reset" value="取消" class="col-1 m-3" style="width:auto;" />
        <input type="submit" value="提交" class="col-1 m-3" style="width:auto;" />
    </div>
</form>